技术领域Technical field
本申请涉及电力电子技术领域，特别是涉及一种通信串扰抑制方法、管理模块、光伏设备及光伏系统。This application relates to the field of power electronics technology, and in particular to a communication crosstalk suppression method, management module, photovoltaic equipment and photovoltaic system.
背景技术Background technique
在光伏发电系统中，光伏设备的应用越来越普遍。光伏设备与光伏直流电源连接，可以实现功率优化、监控、快速关断等功能。通常情况下，多个光伏设备并联或串联形成一个光伏设备组接入汇流设备，汇流设备可以是交流汇流箱、直流汇流箱或组串逆变器。这些汇流设备可能集中放置在便于维护的场地，通常离光伏阵列存在一定的距离，光伏设备组的输出线缆一般会共用一个桥架走线到相应的汇流设备。In photovoltaic power generation systems, the application of photovoltaic equipment is becoming more and more common. Photovoltaic equipment is connected to the photovoltaic DC power supply to achieve functions such as power optimization, monitoring, and quick shutdown. Usually, multiple photovoltaic devices are connected in parallel or in series to form a photovoltaic device group connected to a converging device. The converging device can be an AC combiner box, a DC combiner box or a string inverter. These converging devices may be centrally placed in a site that is convenient for maintenance, usually at a certain distance from the photovoltaic array. The output cables of the photovoltaic equipment group will generally share a bridge and be routed to the corresponding converging device.
桥架中的多个光伏设备组的回路由于距离很近，光伏设备组中的PLC（Power LineCommunication，电力线载波通信）信号存在较强的容性/感性耦合，也称为信号串扰，互相成为彼此通信信道（一个汇流设备对应的管理模块和其互感耦合的光伏设备构成一个通信信道）的噪声，导致通信的失败。并且由于同一光伏发电系统中各光伏设备组回路长度存在差异，且设备的现场安装难以保证各光伏设备组的寄生参数一致，因此各光伏设备组中的串扰强度也存在差异，难以通过光伏设备的统一出厂设置解决该问题。Due to the close distance between the loops of multiple photovoltaic equipment groups in the bridge, the PLC (Power Line Communication) signals in the photovoltaic equipment group have strong capacitive/inductive coupling, also known as signal crosstalk, and they become mutual communication. The noise in the channel (the management module corresponding to a confluence device and its mutually coupled photovoltaic equipment constitute a communication channel) causes communication failure. And because the loop lengths of each photovoltaic equipment group in the same photovoltaic power generation system are different, and the on-site installation of the equipment is difficult to ensure that the parasitic parameters of each photovoltaic equipment group are consistent, the crosstalk intensity in each photovoltaic equipment group is also different, and it is difficult to pass the photovoltaic equipment. Unifying factory settings solves this problem.
发明内容Contents of the invention
在本实施例中提供了一种通信串扰抑制方法、管理模块、光伏设备及光伏系统，以解决相关技术中存在的光伏设备通信的信号串扰的问题。In this embodiment, a communication crosstalk suppression method, a management module, a photovoltaic device, and a photovoltaic system are provided to solve the problem of signal crosstalk in photovoltaic device communication that exists in related technologies.
第一个方面，在本实施例中提供了一种通信串扰抑制方法，应用于光伏系统中的管理模块，所述光伏系统还包括多个光伏设备组和多个汇流设备，所述光伏设备组包括多个光伏设备，至少一个所述光伏设备组连接至对应的所述汇流设备，每个所述汇流设备对应一个所述管理模块，所述方法包括：In the first aspect, this embodiment provides a communication crosstalk suppression method, which is applied to a management module in a photovoltaic system. The photovoltaic system also includes multiple photovoltaic equipment groups and multiple confluence devices. The photovoltaic equipment groups It includes multiple photovoltaic devices, at least one of the photovoltaic device groups is connected to the corresponding confluence device, and each of the confluence devices corresponds to one of the management modules. The method includes:
接收上位机发送的信号发送指令，所述信号发送指令中包括目标频率；Receive a signal transmission instruction sent by the host computer, where the signal transmission instruction includes the target frequency;
基于所述信号发送指令向所述多个光伏设备发送频率修改信号，所述频率修改信号用于所述光伏设备基于接收的多个所述频率修改信号的信号强度和所述频率修改信号中的目标频率调整所述光伏设备的通信频率；所述多个频率修改信号包含的目标频率互不相同；以及Based on the signal sending instruction, a frequency modification signal is sent to the plurality of photovoltaic devices. The frequency modification signal is used by the photovoltaic device based on the signal strength of the received plurality of frequency modification signals and the frequency modification signal. The target frequency adjusts the communication frequency of the photovoltaic device; the target frequencies included in the plurality of frequency modification signals are different from each other; and
基于所述目标频率，调整所述管理模块的通信频率。Based on the target frequency, the communication frequency of the management module is adjusted.
在其中的一些实施例中，所述光伏设备基于接收的多个所述频率修改信号的信号强度，确定信号强度最大的频率修改信号为目标频率修改信号，并基于所述目标频率修改信号中的目标频率调整其通信频率。In some embodiments, the photovoltaic device determines the frequency modification signal with the largest signal strength as the target frequency modification signal based on the signal strength of the multiple frequency modification signals received, and based on the target frequency modification signal, The target frequency adjusts its communication frequency.
在其中的一些实施例中，所述频率修改信号中还包括频率修改指令，所述频率修改指令用于指示所述光伏设备基于所述目标频率修改信号中的目标频率调整其通信频率。In some embodiments, the frequency modification signal further includes a frequency modification instruction, and the frequency modification instruction is used to instruct the photovoltaic device to adjust its communication frequency based on the target frequency in the target frequency modification signal.
在其中的一些实施例中，在向所述多个光伏设备发送频率修改信号后，向所述光伏设备发送频率修改指令，所述频率修改指令用于指示所述光伏设备基于所述目标频率修改信号中的目标频率调整其通信频率。In some embodiments, after sending frequency modification signals to the plurality of photovoltaic devices, a frequency modification instruction is sent to the photovoltaic device, and the frequency modification instruction is used to instruct the photovoltaic device to modify based on the target frequency. The target frequency in the signal adjusts its communication frequency.
在其中的一些实施例中，所述频率修改信号还包括分组标识，所述分组标识用于标识对应的管理模块，用于所述光伏设备基于接收的多个所述频率修改信号的信号强度和所述频率修改信号中的分组标识生成分组信息。In some embodiments, the frequency modification signal further includes a group identifier, and the group identifier is used to identify a corresponding management module, which is used by the photovoltaic device based on the signal strength and sum of the received multiple frequency modification signals. The grouping identifier in the frequency modification signal generates grouping information.
在其中的一些实施例中，所述方法还包括：In some embodiments, the method further includes:
向对应的所述多个光伏设备发送分组标识，用于所述光伏设备基于所述分组标识生成分组信息，所述分组标识用于标识对应的管理模块。A grouping identifier is sent to the corresponding plurality of photovoltaic devices for the photovoltaic device to generate grouping information based on the grouping identifier, and the grouping identifier is used to identify the corresponding management module.
在其中的一些实施例中，所述方法还包括：In some embodiments, the method further includes:
接收对应的所述多个光伏设备发送的设备信息；Receive device information sent by the corresponding plurality of photovoltaic devices;
基于所述设备信息，对所述多个光伏设备组网。Based on the device information, the plurality of photovoltaic devices are networked.
第二个方面，在本实施例中提供了一种通信串扰抑制方法，应用于光伏系统中的光伏设备，所述光伏系统包括多个光伏设备组、多个汇流设备和对应的多个管理模块，所述光伏设备组包括多个光伏设备，至少一个所述光伏设备组连接至对应的所述汇流设备，每个所述汇流设备对应一个所述管理模块，所述方法包括：In the second aspect, this embodiment provides a communication crosstalk suppression method, which is applied to photovoltaic equipment in a photovoltaic system. The photovoltaic system includes multiple photovoltaic equipment groups, multiple confluence devices and corresponding multiple management modules. , the photovoltaic equipment group includes multiple photovoltaic equipment, at least one of the photovoltaic equipment groups is connected to the corresponding confluence device, each of the confluence devices corresponds to one of the management modules, and the method includes:
接收多个管理模块依次发送的多个频率修改信号，所述多个频率修改信号包含的目标频率互不相同；Receive multiple frequency modification signals sent in sequence by multiple management modules, where the target frequencies contained in the multiple frequency modification signals are different from each other;
基于接收的所述多个频率修改信号的信号强度和所述频率修改信号中的目标频率，调整所述光伏设备的通信频率。A communication frequency of the photovoltaic device is adjusted based on the received signal strength of the plurality of frequency modification signals and a target frequency in the frequency modification signals.
在其中的一些实施例中，所述基于接收的所述多个频率修改信号的信号强度和所述频率修改信号中的目标频率，调整所述光伏设备的通信频率，包括：In some embodiments, adjusting the communication frequency of the photovoltaic device based on the received signal strength of the plurality of frequency modification signals and the target frequency in the frequency modification signal includes:
基于接收的所述多个频率修改信号的信号强度，确定信号强度最大的频率修改信号为目标频率修改信号；Based on the received signal strengths of the plurality of frequency modification signals, determine the frequency modification signal with the largest signal strength as the target frequency modification signal;
基于所述目标频率修改信号中的目标频率，调整所述光伏设备的通信频率。The communication frequency of the photovoltaic device is adjusted based on the target frequency in the target frequency modification signal.
在其中的一些实施例中，所述基于所述目标频率修改信号的目标频率，调整所述光伏设备的通信频率，包括：In some embodiments, adjusting the communication frequency of the photovoltaic device based on the target frequency of the target frequency modification signal includes:
基于所述目标频率修改信号中的目标频率，自动调整所述光伏设备的通信频率。Automatically adjust the communication frequency of the photovoltaic device based on the target frequency in the target frequency modification signal.
在其中的一些实施例中，所述基于所述目标频率修改信号的目标频率，调整所述光伏设备的通信频率，包括：In some embodiments, adjusting the communication frequency of the photovoltaic device based on the target frequency of the target frequency modification signal includes:
基于频率修改指令和所述目标频率修改信号中的目标频率调整所述光伏设备的通信频率，其中所述频率修改指令包含在所述频率修改信号中，或者，所述频率修改指令由各所述管理模块在发送所述频率修改信号后发送。The communication frequency of the photovoltaic device is adjusted based on a frequency modification instruction and a target frequency in the target frequency modification signal, wherein the frequency modification instruction is included in the frequency modification signal, or the frequency modification instruction is provided by each of the The management module sends the frequency modification signal after sending it.
在其中的一些实施例中，所述方法还包括：In some embodiments, the method further includes:
基于所述频率修改信号的信号强度和分组标识，生成分组信息；其中所述分组标识包含在所述频率修改信号中，所述分组标识用于标识对应的管理模块。Grouping information is generated based on the signal strength and grouping identification of the frequency modification signal; wherein the grouping identification is included in the frequency modification signal, and the grouping identification is used to identify the corresponding management module.
在其中的一些实施例中，所述方法还包括：In some embodiments, the method further includes:
与对应的所述管理模块通信，上报所述光伏设备的设备信息以实现所述光伏设备的组网。Communicate with the corresponding management module and report the device information of the photovoltaic equipment to implement networking of the photovoltaic equipment.
第三个方面，在本实施例中提供了一种通信串扰抑制方法，应用于光伏系统，所述光伏系统包括多个光伏设备组、多个汇流设备和对应的多个管理模块，所述光伏设备组包括多个光伏设备，至少一个所述光伏设备组连接至对应的所述汇流设备，每个所述汇流设备对应一个所述管理模块，所述方法包括：In the third aspect, this embodiment provides a communication crosstalk suppression method, which is applied to a photovoltaic system. The photovoltaic system includes multiple photovoltaic equipment groups, multiple confluence devices and corresponding multiple management modules. The photovoltaic system The equipment group includes multiple photovoltaic equipment, at least one of the photovoltaic equipment groups is connected to the corresponding confluence device, and each of the confluence devices corresponds to one of the management modules. The method includes:
所述多个管理模块接收上位机发送的信号发送指令，所述信号发送指令中包括目标频率；The plurality of management modules receive signal transmission instructions sent by the host computer, and the signal transmission instructions include the target frequency;
所述多个管理模块基于所述信号发送指令，依次向所述多个光伏设备发送频率修改信号，多个频率修改信号包含的目标频率互不相同；The plurality of management modules send frequency modification signals to the plurality of photovoltaic devices in sequence based on the signal sending instructions, and the target frequencies contained in the plurality of frequency modification signals are different from each other;
所述光伏设备基于接收的所述多个频率修改信号的信号强度和所述频率修改信号中的目标频率，调整所述光伏设备的通信频率；The photovoltaic device adjusts the communication frequency of the photovoltaic device based on the received signal strength of the plurality of frequency modification signals and the target frequency in the frequency modification signal;
所述多个管理模块基于所述目标频率，调整所述管理模块的通信频率。The plurality of management modules adjust the communication frequency of the management module based on the target frequency.
第四个方面，在本实施例中提供了一种管理模块，所述管理模块应用于光伏系统，所述光伏系统还包括多个光伏设备组和多个汇流设备，所述光伏设备组包括多个光伏设备，至少一个所述光伏设备组连接至对应的所述汇流设备，每个所述汇流设备对应一个所述管理模块，所述管理模块包括：In the fourth aspect, this embodiment provides a management module, which is applied to a photovoltaic system. The photovoltaic system also includes multiple photovoltaic equipment groups and multiple converging devices. The photovoltaic equipment group includes multiple photovoltaic equipment, at least one of the photovoltaic equipment groups is connected to the corresponding confluence device, each of the confluence devices corresponds to one of the management modules, and the management module includes:
第一接收模块，用于接收上位机发送的信号发送指令，所述信号发送指令中包括目标频率；The first receiving module is used to receive the signal transmission instruction sent by the host computer, where the signal transmission instruction includes the target frequency;
发送模块，用于基于所述信号发送指令向所述多个光伏设备发送频率修改信号，所述频率修改信号用于所述光伏设备基于接收的多个所述频率修改信号的信号强度和所述频率修改信号中的目标频率调整其通信频率；所述多个频率修改信号包含的目标频率互不相同；A sending module, configured to send a frequency modification signal to the plurality of photovoltaic devices based on the signal sending instruction, the frequency modification signal being used by the photovoltaic device based on the signal strength of the received plurality of frequency modification signals and the The target frequency in the frequency modification signal adjusts its communication frequency; the target frequencies contained in the plurality of frequency modification signals are different from each other;
第一调整模块，用于基于所述目标频率，调整所述管理模块的通信频率。The first adjustment module is configured to adjust the communication frequency of the management module based on the target frequency.
第五个方面，在本实施例中提供了一种光伏设备，所述光伏设备应用于光伏系统，所述光伏系统包括多个光伏设备组、多个汇流设备和对应的多个管理模块，所述光伏设备组包括多个光伏设备，至少一个所述光伏设备组连接至对应的所述汇流设备，每个所述汇流设备对应一个所述管理模块，所述光伏设备包括：In the fifth aspect, this embodiment provides a photovoltaic equipment, the photovoltaic equipment is applied to a photovoltaic system, the photovoltaic system includes multiple photovoltaic equipment groups, multiple confluence devices and corresponding multiple management modules, so The photovoltaic equipment group includes a plurality of photovoltaic equipment, at least one of the photovoltaic equipment groups is connected to the corresponding confluence device, each of the confluence devices corresponds to one of the management modules, and the photovoltaic equipment includes:
第二接收模块，用于接收多个管理模块依次发送的多个频率修改信号，所述多个频率修改信号包含的目标频率互不相同；The second receiving module is configured to receive multiple frequency modification signals sent in sequence by multiple management modules, where the target frequencies contained in the multiple frequency modification signals are different from each other;
第二调整模块，用于基于接收的所述多个频率修改信号的信号强度和所述频率修改信号中的目标频率，调整所述光伏设备的通信频率。The second adjustment module is configured to adjust the communication frequency of the photovoltaic device based on the received signal strength of the plurality of frequency modification signals and the target frequency in the frequency modification signal.
第六个方面，在本实施例中提供了一种光伏系统，所述光伏系统包括多个光伏设备组、多个汇流设备和对应的多个如第四个方面所述的管理模块，所述光伏设备组包括多个如第五个方面所述的光伏设备，至少一个所述光伏设备组连接至对应的所述汇流设备，每个所述汇流设备对应一个所述管理模块。In a sixth aspect, this embodiment provides a photovoltaic system, which includes a plurality of photovoltaic equipment groups, a plurality of converging devices, and a corresponding plurality of management modules as described in the fourth aspect, wherein The photovoltaic equipment group includes a plurality of photovoltaic equipment as described in the fifth aspect, at least one of the photovoltaic equipment groups is connected to the corresponding confluence device, and each of the confluence devices corresponds to one of the management modules.
与相关技术相比，在本实施例中提供的通信串扰抑制方法，管理模块接收上位机发送的信号发送指令，信号发送指令用于控制管理模块向光伏设备发送频率修改信号和对应的目标频率；多个管理模块基于信号发送指令依次向多个光伏设备发送频率修改信号，以便光伏设备基于接收的多个频率修改信号的信号强度和频率修改信号中的目标频率调整光伏设备的通信频率，使各光伏设备的通信频率互不相同；并基于目标频率，调整管理模块的通信频率，通过自适应频率修改机制实现了光伏设备的通信频率修改以及管理模块的通信频率修改，在无需增加额外设备或额外进行参数设置的情况下，通过给不同信道分配不同通信频率为后续的系统长期运行解决了信号串扰问题，保证了系统的稳定运行。Compared with related technologies, in the communication crosstalk suppression method provided in this embodiment, the management module receives the signal sending instruction sent by the host computer, and the signal sending instruction is used to control the management module to send the frequency modification signal and the corresponding target frequency to the photovoltaic equipment; Multiple management modules sequentially send frequency modification signals to multiple photovoltaic devices based on signal sending instructions, so that the photovoltaic devices adjust the communication frequency of the photovoltaic devices based on the signal strength of the received multiple frequency modification signals and the target frequency in the frequency modification signal, so that each The communication frequencies of photovoltaic equipment are different from each other; and based on the target frequency, the communication frequency of the management module is adjusted. Through the adaptive frequency modification mechanism, the communication frequency modification of the photovoltaic equipment and the communication frequency modification of the management module are realized without adding additional equipment or additional In the case of parameter setting, by allocating different communication frequencies to different channels, the problem of signal crosstalk is solved for the long-term operation of the subsequent system and the stable operation of the system is ensured.
本申请的一个或多个实施例的细节在以下附图和描述中提出，以使本申请的其他特征、目的和优点更加简明易懂。The details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more concise and understandable.
附图说明Description of the drawings
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：The drawings described here are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the attached picture:
图1是本申请一些实施例的光伏系统的结构示意图；Figure 1 is a schematic structural diagram of a photovoltaic system according to some embodiments of the present application;
图2是本申请另一些实施例的光伏系统的结构示意图；Figure 2 is a schematic structural diagram of a photovoltaic system according to other embodiments of the present application;
图3是本申请一些实施例的管理模块的通信串扰抑制方法的流程图；Figure 3 is a flow chart of the communication crosstalk suppression method of the management module in some embodiments of the present application;
图4是本申请一些实施例的光伏系统的通信网络拓扑示意图；Figure 4 is a schematic diagram of the communication network topology of the photovoltaic system according to some embodiments of the present application;
图5是本申请一些实施例的管理模块对光伏设备组网的流程图；Figure 5 is a flow chart of photovoltaic equipment networking by the management module in some embodiments of the present application;
图6是本申请一些实施例的光伏设备的通信串扰抑制方法的流程图；Figure 6 is a flow chart of a communication crosstalk suppression method for photovoltaic equipment according to some embodiments of the present application;
图7是本申请一些实施例的光伏系统的通信串扰抑制方法的流程图；Figure 7 is a flow chart of a communication crosstalk suppression method for a photovoltaic system according to some embodiments of the present application;
图8是本申请一些实施例的管理模块的结构框图；Figure 8 is a structural block diagram of a management module in some embodiments of the present application;
图9是本申请一些实施例的光伏设备的结构框图。Figure 9 is a structural block diagram of photovoltaic equipment according to some embodiments of the present application.
具体实施方式Detailed ways
为更清楚地理解本申请的目的、技术方案和优点，下面结合附图和实施例，对本申请进行了描述和说明。应当理解，此处描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。In order to understand the purpose, technical solutions and advantages of the present application more clearly, the present application is described and illustrated below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.
除另作定义外，本申请所涉及的技术术语或者科学术语应具有本申请所属技术领域具备一般技能的人所理解的一般含义。在本申请中的“一”、“一个”、“一种”、“该”、“这些”等类似的词并不表示数量上的限制，它们可以是单数或者复数。在本申请中所涉及的术语“包括”、“包含”、“具有”及其任何变体，其目的是涵盖不排他的包含；例如，包含一系列步骤或模块（单元）的过程、方法和系统、产品或设备并未限定于列出的步骤或模块（单元），而可包括未列出的步骤或模块（单元），或者可包括这些过程、方法、产品或设备固有的其他步骤或模块（单元）。在本申请中所涉及的“连接”、“相连”、“耦接”等类似的词语并不限定于物理的或机械连接，而可以包括电气连接，无论是直接连接还是间接连接。在本申请中所涉及的“多个”是指两个或两个以上。“和/或”描述关联对象的关联关系，表示可以存在三种关系，例如，“A和/或B”可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。通常情况下，字符“/”表示前后关联的对象是一种“或”的关系。在本申请中所涉及的术语“第一”、“第二”、“第三”等，只是对相似对象进行区分，并不代表针对对象的特定排序。Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the general meaning understood by a person with ordinary skills in the technical field to which this application belongs. In this application, "a", "an", "an", "the", "these" and other similar words do not indicate a quantitative limitation, and they may be singular or plural. The terms "comprising", "comprising", "having" and any variations thereof, as used in this application, are intended to cover a non-exclusive inclusion; for example, processes, methods and Systems, products, or devices are not limited to the steps or modules (units) listed, but may include steps or modules (units) not listed, or may include other steps or modules inherent to such processes, methods, products, or devices (unit). Words such as "connected", "connected", "coupled" and the like mentioned in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" mentioned in this application means two or more. "And/or" describes the relationship between related objects, indicating that three relationships can exist. For example, "A and/or B" can mean: A alone exists, A and B exist simultaneously, and B exists alone. Normally, the character "/" indicates that the related objects are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application only distinguish similar objects and do not represent a specific ordering of the objects.
图1为本发明一实施例提供的光伏系统的结构示意图，该光伏系统包括多个光伏设备组10（图1中示出2个）、多个汇流设备30（图1中示出1个）和对应的多个管理模块20，光伏设备组10包括多个光伏设备101（即图1中的C1~Cm和C1~Cn），至少一个光伏设备组10连接至对应的汇流设备30，每个汇流设备30对应一个管理模块20。光伏设备101与光伏直流电源40对应连接。本领域技术人员可以理解，光伏系统可以包括两个或两个以上的汇流设备30，汇流设备30可以具有一个或多个输入端口，每个光伏设备组10可以分别对应连接至一个汇流设备30的一个输入端口。Figure 1 is a schematic structural diagram of a photovoltaic system provided by an embodiment of the present invention. The photovoltaic system includes multiple photovoltaic equipment groups 10 (two are shown in Figure 1) and multiple confluence devices 30 (one is shown in Figure 1). and corresponding multiple management modules 20. The photovoltaic equipment group 10 includes multiple photovoltaic equipment 101 (ie, C1~Cm and C1~Cn in Figure 1). At least one photovoltaic equipment group 10 is connected to the corresponding converging device 30, each The confluence device 30 corresponds to a management module 20 . The photovoltaic equipment 101 is connected correspondingly to the photovoltaic DC power supply 40 . Those skilled in the art can understand that the photovoltaic system may include two or more bus devices 30 , the bus device 30 may have one or more input ports, and each photovoltaic device group 10 may be connected to a bus device 30 . an input port.
其中，管理模块20与各光伏设备101通信，用于对各光伏设备进行分组管理。Among them, the management module 20 communicates with each photovoltaic equipment 101 for group management of each photovoltaic equipment.
其中，光伏设备101可以是关断器、优化器、微型逆变器以及监控器等。Among them, the photovoltaic device 101 can be a shutdown device, an optimizer, a micro-inverter, a monitor, etc.
其中，光伏直流电源40可以是单个光伏组件，也可以是串联和/或并联连接的多个光伏组件，也可以是串联和/或并联连接的多个光伏电池子串。The photovoltaic DC power supply 40 may be a single photovoltaic module, multiple photovoltaic modules connected in series and/or parallel, or multiple photovoltaic cell sub-strings connected in series and/or parallel.
其中，汇流设备30可以是逆变器，用于将光伏设备组10提供的直流电逆变为交流电并输出；汇流设备30也可以是直流汇流箱或交流汇流箱，用于将各光伏设备组10输出的直流电或交流电进行汇流。Among them, the converging device 30 can be an inverter, used to invert the DC power provided by the photovoltaic equipment group 10 into AC power and output it; the converging device 30 can also be a DC combiner box or an AC combiner box, used to convert each photovoltaic equipment group 10 The output DC or AC power is merged.
在一些实施例中，管理模块20可以集成在汇流设备30中。In some embodiments, the management module 20 may be integrated into the convergence device 30 .
图2为本发明另一实施例提供的光伏系统的结构示意图。同一光伏设备组10内的多个光伏设备101可以如图1所示串联连接，也可以如图2所示并联连接。图2中的光伏设备组10、管理模块20、汇流设备30以及光伏直流电源40的具体功能可以与图1相同，在此不再赘述。Figure 2 is a schematic structural diagram of a photovoltaic system provided by another embodiment of the present invention. Multiple photovoltaic devices 101 in the same photovoltaic device group 10 may be connected in series as shown in FIG. 1 or in parallel as shown in FIG. 2 . The specific functions of the photovoltaic equipment group 10, the management module 20, the converging device 30 and the photovoltaic DC power supply 40 in Figure 2 can be the same as those in Figure 1 and will not be described again here.
在一实施例中，提供了一种通信串扰抑制方法，图3是本申请一些实施例的通信串扰抑制方法的流程图，如图3所示，以该方法应用于图1或图2中的光伏系统中的管理模块为例进行说明，包括以下步骤：In one embodiment, a communication crosstalk suppression method is provided. Figure 3 is a flow chart of a communication crosstalk suppression method in some embodiments of the present application. As shown in Figure 3, this method is applied to the communication crosstalk suppression method in Figure 1 or Figure 2. The management module in the photovoltaic system is taken as an example to illustrate, including the following steps:
步骤S301，接收上位机发送的信号发送指令，该信号发送指令中包括目标频率。Step S301: Receive a signal transmission instruction sent by the host computer. The signal transmission instruction includes the target frequency.
上位机是指用于向管理模块发送指令并获取管理模块运行状态的计算机或其他运算设备。本实施例中上位机可以为网关设备。进一步地，上位机还可以与监控云平台通信连接。图4是本申请一些实施例的光伏系统的通信网络拓扑示意图，如图4所示，光伏发电系统包括多个管理模块20，每个管理模块20对应于一个汇流设备，每个汇流设备对应至少一个光伏设备组10（图4中示出一个），管理模块20与汇流设备连接的各光伏设备通信，例如可以通过电流互感器与汇流设备连接的各光伏设备组10耦合，与各光伏设备101例如通过电力线载波通信，但不限于此。The host computer refers to a computer or other computing device used to send instructions to the management module and obtain the operating status of the management module. In this embodiment, the host computer may be a gateway device. Furthermore, the host computer can also communicate with the monitoring cloud platform. Figure 4 is a schematic diagram of the communication network topology of the photovoltaic system according to some embodiments of the present application. As shown in Figure 4, the photovoltaic power generation system includes multiple management modules 20. Each management module 20 corresponds to a confluence device, and each confluence device corresponds to at least A photovoltaic equipment group 10 (one is shown in Figure 4), the management module 20 communicates with each photovoltaic equipment connected to the bus equipment, for example, can be coupled to each photovoltaic equipment group 10 connected to the bus equipment through a current transformer, and each photovoltaic equipment 101 For example, but not limited to, power line carrier communication.
光伏发电系统还包括至少一个网关设备50和监控云平台60。网关设备50可同时兼容多种不同数据传输方式，能够与其对应的各个管理模块20进行通信，并能与监控云平台60和/或APP等进行数据传输。The photovoltaic power generation system also includes at least one gateway device 50 and a monitoring cloud platform 60 . The gateway device 50 can be compatible with a variety of different data transmission methods at the same time, can communicate with its corresponding management modules 20, and can perform data transmission with the monitoring cloud platform 60 and/or APP, etc.
网关设备50依次给各个汇流设备对应的管理模块20发送信号发送指令，该信号发送指令中包括目标频率，用于控制各个管理模块20向多个光伏设备101发送频率修改信号，且各个管理模块对应的目标频率互不相同。The gateway device 50 sequentially sends signal sending instructions to the management modules 20 corresponding to each confluence device. The signal sending instructions include the target frequency and are used to control each management module 20 to send frequency modification signals to multiple photovoltaic devices 101, and each management module corresponds to The target frequencies are different from each other.
步骤S302，基于信号发送指令向多个光伏设备发送频率修改信号，该频率修改信号用于光伏设备基于接收的多个频率修改信号的信号强度和频率修改信号中的目标频率调整光伏设备的通信频率；多个频率修改信号包含的目标频率互不相同。Step S302: Send frequency modification signals to multiple photovoltaic devices based on the signal sending instructions. The frequency modification signals are used by the photovoltaic devices to adjust the communication frequency of the photovoltaic devices based on the signal strength of the received multiple frequency modification signals and the target frequency in the frequency modification signals. ; Multiple frequency modification signals contain different target frequencies.
各个管理模块20接收到网关设备50发送的信号发送指令后，以初始通信频率依次给光伏设备101发送频率修改信号。各个管理模块20发送的频率修改信号的初始信号强度可以一致。各个管理模块20发送的频率修改信号中包括对应的目标频率。各个管理模块20发送的频率修改信号中包括的目标频率不同。优选的，各个目标频率正交。After receiving the signal transmission instruction sent by the gateway device 50, each management module 20 sequentially sends frequency modification signals to the photovoltaic device 101 at the initial communication frequency. The initial signal strengths of the frequency modification signals sent by each management module 20 may be consistent. The frequency modification signal sent by each management module 20 includes the corresponding target frequency. The target frequencies included in the frequency modification signals sent by each management module 20 are different. Preferably, the target frequencies are orthogonal.
各个光伏设备101接收到管理模块20发送的频率修改信号后，基于接收到的频率修改信号的信号强度以及频率修改信号中包括的目标频率z1调整光伏设备的通信频率。各个光伏设备101的初始通信频率出厂设置可以一致。After receiving the frequency modification signal sent by the management module 20, each photovoltaic device 101 adjusts the communication frequency of the photovoltaic device based on the signal strength of the received frequency modification signal and the target frequency z1 included in the frequency modification signal. The factory setting of the initial communication frequency of each photovoltaic device 101 may be consistent.
步骤S303，基于该目标频率，调整管理模块的通信频率。Step S303: Adjust the communication frequency of the management module based on the target frequency.
光伏设备101完成通信频率调整后，各个管理模块20将本机对应的通信频率也调整为目标频率z1。After the photovoltaic equipment 101 completes the communication frequency adjustment, each management module 20 also adjusts the corresponding communication frequency of the device to the target frequency z1 .
本实施例的通信串扰抑制方法，管理模块接收上位机发送的信号发送指令，用于控制管理模块向光伏设备发送频率修改信号和对应的目标频率；多个管理模块基于信号发送指令依次向多个光伏设备发送频率修改信号，以便光伏设备基于接收的多个频率修改信号的信号强度和频率修改信号中的目标频率调整光伏设备的通信频率，使各光伏设备的通信频率互不相同；并基于目标频率，调整管理模块的通信频率，通过自适应频率修改机制实现了光伏设备的通信频率修改以及管理模块的通信频率修改，在无需增加额外设备或额外进行参数设置的情况下，通过给不同信道分配不同通信频率为后续的系统长期运行解决了信号串扰问题，保证了系统的稳定运行。In the communication crosstalk suppression method of this embodiment, the management module receives the signal sending instruction sent by the host computer to control the management module to send the frequency modification signal and the corresponding target frequency to the photovoltaic equipment; multiple management modules sequentially send signals to multiple The photovoltaic device sends a frequency modification signal, so that the photovoltaic device adjusts the communication frequency of the photovoltaic device based on the signal strength of the received multiple frequency modification signals and the target frequency in the frequency modification signal, so that the communication frequencies of each photovoltaic device are different from each other; and based on the target Frequency, adjust the communication frequency of the management module. Through the adaptive frequency modification mechanism, the communication frequency modification of the photovoltaic equipment and the communication frequency modification of the management module are realized. Without adding additional equipment or additional parameter settings, by allocating different channels Different communication frequencies solve the problem of signal crosstalk for the long-term operation of the subsequent system and ensure the stable operation of the system.
在其中的一些实施例中，光伏设备基于接收的多个频率修改信号的信号强度，确定信号强度最大的频率修改信号为目标频率修改信号，并基于目标频率修改信号中的目标频率调整其通信频率。In some embodiments, the photovoltaic device determines the frequency modification signal with the largest signal strength as the target frequency modification signal based on the signal strength of the received multiple frequency modification signals, and adjusts its communication frequency based on the target frequency in the target frequency modification signal. .
具体的，各光伏设备将所接收的多个频率修改信号的信号强度进行比较，确定信号强度最大的频率修改信号，并基于该频率修改信号中包括的目标频率z1调整其通信频率。Specifically, each photovoltaic device compares the signal strengths of multiple received frequency modification signals, determines the frequency modification signal with the largest signal strength, and adjusts its communication frequency based on the target frequency z1 included in the frequency modification signal.
在一实施例中，光伏设备在确定目标频率修改信号之后，可以主动将光伏设备的通信频率设置为目标频率修改信号中包括的目标频率z1。In an embodiment, after determining the target frequency modification signal, the photovoltaic device may actively set the communication frequency of the photovoltaic device to the target frequency z1 included in the target frequency modification signal.
在另一实施例中，频率修改信号中还包括频率修改指令，该频率修改指令用于指示光伏设备基于目标频率修改信号中的目标频率调整其通信频率。光伏设备在确定目标频率修改信号之后，基于目标频率修改信号中的频率修改指令将光伏设备的通信频率设置为目标频率z1。In another embodiment, the frequency modification signal also includes a frequency modification instruction, which is used to instruct the photovoltaic device to adjust its communication frequency based on the target frequency in the target frequency modification signal. After determining the target frequency modification signal, the photovoltaic equipment sets the communication frequency of the photovoltaic equipment to the target frequency z1 based on the frequency modification instruction in the target frequency modification signal.
在又一实施例中，在管理模块向多个光伏设备发送频率修改信号后，各个管理模块再依次向光伏设备发送频率修改指令，该频率修改指令用于指示光伏设备基于目标频率修改信号中的目标频率调整其通信频率。光伏设备接收到频率修改指令后将光伏设备的通信频率设置为目标频率z1。In another embodiment, after the management module sends frequency modification signals to multiple photovoltaic devices, each management module sends frequency modification instructions to the photovoltaic devices in sequence. The frequency modification instructions are used to instruct the photovoltaic devices to modify the frequency based on the target frequency in the signal. The target frequency adjusts its communication frequency. After receiving the frequency modification instruction, the photovoltaic equipment sets the communication frequency of the photovoltaic equipment to the target frequency z1 .
上述实施例中的通信串扰抑制方法，其整体机制是利用串扰信号强度明显低于通信信号强度的特点，通过自适应频率修改机制实现了光伏设备的通信频率修改以及管理模块的通信频率修改，通过给不同信道分配不同通信频率为后续的系统长期运行解决了信号串扰问题，保证了系统的稳定运行。The overall mechanism of the communication crosstalk suppression method in the above embodiment is to take advantage of the fact that the crosstalk signal strength is significantly lower than the communication signal strength, and realize the communication frequency modification of the photovoltaic equipment and the communication frequency modification of the management module through the adaptive frequency modification mechanism. Assigning different communication frequencies to different channels solves the problem of signal crosstalk for the long-term operation of the subsequent system and ensures stable operation of the system.
进一步地，在一些实施例中，管理模块可在发送频率修改信号的同时进行光伏设备的分组。其中，频率修改信号还包括分组标识，该分组标识用于标识对应的管理模块，用于各光伏设备基于接收的多个频率修改信号的信号强度和频率修改信号中的分组标识生成分组信息。分组标识例如为管理模块的ID。Further, in some embodiments, the management module may perform grouping of photovoltaic devices while sending the frequency modification signal. The frequency modification signal also includes a grouping identifier, which is used to identify the corresponding management module and is used for each photovoltaic device to generate grouping information based on the signal strength of the multiple frequency modification signals received and the grouping identifier in the frequency modification signal. The group identifier is, for example, the ID of the management module.
例如，在一实施例中，各光伏设备可以将所接收的多个频率修改信号的信号强度进行比较，确定信号强度最大的频率修改信号，并基于该频率修改信号中的分组标识确定分组信息。For example, in one embodiment, each photovoltaic device can compare the signal strengths of multiple received frequency modification signals, determine the frequency modification signal with the largest signal strength, and determine the grouping information based on the grouping identifier in the frequency modification signal.
在另一些实施例中，还可以在不同信道分配不同的通信频率之后，再进行光伏设备的分组。在不同信道分配不同的通信频率之后，同一信道的管理模块和光伏设备的通信频率相同，且通信不会受到其它信道中的信号干扰。该方法包括：In other embodiments, photovoltaic devices can be grouped after different communication frequencies are allocated to different channels. After different channels are assigned different communication frequencies, the communication frequencies of the management module and photovoltaic equipment on the same channel are the same, and the communication will not be interfered by signals in other channels. The method includes:
向对应的多个光伏设备发送分组标识，用于光伏设备基于该分组标识生成分组信息，该分组标识用于标识对应的管理模块。The grouping identification is sent to the corresponding plurality of photovoltaic devices, so that the photovoltaic equipment generates grouping information based on the grouping identification, and the grouping identification is used to identify the corresponding management module.
例如，在一实施例中，各个管理模块向对应的光伏设备发送分组指令，分组指令包括分组标识，分组标识例如为管理模块的ID。For example, in one embodiment, each management module sends a grouping instruction to the corresponding photovoltaic device. The grouping instruction includes a grouping identifier, and the grouping identifier is, for example, the ID of the management module.
各个光伏设备接收到对应的管理模块发送的分组指令后，基于分组指令中的分组标识生成光伏设备的分组信息。After each photovoltaic device receives the grouping instruction sent by the corresponding management module, it generates grouping information of the photovoltaic device based on the grouping identifier in the grouping instruction.
进一步地，在一些实施例中，管理模块还可以在不同信道分配不同的通信频率之后，对光伏设备进行组网。在不同信道分配不同的通信频率之后，同一信道的管理模块和光伏设备的通信频率相同，且通信不会受到其它信道中的信号干扰。图5是本申请一些实施例的管理模块对光伏设备组网的流程图，如图5所示，该流程包括以下步骤：Furthermore, in some embodiments, the management module can also network the photovoltaic equipment after allocating different communication frequencies to different channels. After different channels are assigned different communication frequencies, the communication frequencies of the management module and photovoltaic equipment on the same channel are the same, and the communication will not be interfered by signals in other channels. Figure 5 is a flow chart of photovoltaic equipment networking by the management module in some embodiments of the present application. As shown in Figure 5, the process includes the following steps:
步骤S501，接收对应的多个光伏设备发送的设备信息。Step S501: Receive device information sent by corresponding multiple photovoltaic devices.
在一实施例中，各个光伏设备主动向对应的管理模块发送上报信号，上报信号包括光伏设备的设备信息。In one embodiment, each photovoltaic device actively sends a reporting signal to the corresponding management module, and the reporting signal includes the device information of the photovoltaic device.
在另一实施例中，各个管理模块发送设备信息上报指令，设备信息上报指令指示本信道所有光伏设备上报设备信息。In another embodiment, each management module sends a device information reporting instruction, and the device information reporting instruction instructs all photovoltaic devices in this channel to report device information.
步骤S502，基于该设备信息，对该多个光伏设备组网。Step S502: Network the multiple photovoltaic devices based on the device information.
各个管理模块可以根据对应的光伏设备所上报的设备信息，获取本信道所有光伏设备的设备信息，从而进行组网。各个管理模块获取到对应汇流设备所连接的所有光伏设备的设备信息，然后管理模块向对应的各光伏设备发送包括设备信息和逻辑地址的信号指令，以实现组网。Each management module can obtain the equipment information of all photovoltaic equipment in this channel based on the equipment information reported by the corresponding photovoltaic equipment, thereby forming a network. Each management module obtains the device information of all photovoltaic devices connected to the corresponding confluence device, and then the management module sends signal instructions including device information and logical addresses to the corresponding photovoltaic devices to implement networking.
本实施例的通信串扰抑制方法，通过接收对应的多个光伏设备发送的设备信息，获取本信道中对应的光伏设备的设备信息；通过基于该设备信息，对该多个光伏设备组网，提高了同一信道的管理模块和光伏设备的通信效率。The communication crosstalk suppression method of this embodiment obtains the device information of the corresponding photovoltaic devices in this channel by receiving device information sent by the corresponding multiple photovoltaic devices; by networking the multiple photovoltaic devices based on the device information, it improves Improves the communication efficiency between the management module and photovoltaic equipment on the same channel.
在一实施例中，还提供了一种通信串扰抑制方法，图6是本申请一些实施例的通信串扰抑制方法的流程图，如图6所示，以该方法应用于图1或图2中的光伏系统中的光伏设备为例进行说明，包括以下步骤：In one embodiment, a communication crosstalk suppression method is also provided. Figure 6 is a flow chart of a communication crosstalk suppression method in some embodiments of the present application. As shown in Figure 6, this method is applied to Figure 1 or Figure 2. The photovoltaic equipment in the photovoltaic system is taken as an example, including the following steps:
步骤S601，接收多个管理模块依次发送的多个频率修改信号，该多个频率修改信号包含的目标频率互不相同。Step S601: Receive multiple frequency modification signals sent sequentially by multiple management modules. The multiple frequency modification signals contain different target frequencies.
各个光伏设备接收多个管理模块依次发送的频率修改信号，各个管理模块发送的频率修改信号中包括的目标频率不同。优选的，各个目标频率正交。Each photovoltaic device receives frequency modification signals sent by multiple management modules in sequence, and the frequency modification signals sent by each management module include different target frequencies. Preferably, the target frequencies are orthogonal.
步骤S602，基于接收的多个频率修改信号的信号强度和频率修改信号中的目标频率，调整光伏设备的通信频率。Step S602: Adjust the communication frequency of the photovoltaic device based on the signal strength of the received multiple frequency modification signals and the target frequency in the frequency modification signal.
光伏设备基于接收到的频率修改信号的信号强度以及频率修改信号中包括的目标频率调整光伏设备的通信频率。各个光伏设备的初始通信频率出厂设置可以一致。The photovoltaic device adjusts the communication frequency of the photovoltaic device based on the signal strength of the received frequency modification signal and the target frequency included in the frequency modification signal. The factory setting of the initial communication frequency of each photovoltaic device can be consistent.
本实施例的通信串扰抑制方法，光伏设备通过接收多个管理模块依次发送的多个频率修改信号，并基于接收的多个频率修改信号的信号强度和频率修改信号中的目标频率，调整光伏设备的通信频率，通过自适应频率修改机制实现了光伏设备的通信频率修改，在无需增加额外设备或额外进行参数设置的情况下，通过给不同信道分配不同通信频率为后续的系统长期运行解决了信号串扰问题，保证了系统的稳定运行。In the communication crosstalk suppression method of this embodiment, the photovoltaic equipment receives multiple frequency modification signals sent sequentially by multiple management modules, and adjusts the photovoltaic equipment based on the signal strength of the multiple frequency modification signals received and the target frequency in the frequency modification signal. The communication frequency of photovoltaic equipment is modified through the adaptive frequency modification mechanism. Without adding additional equipment or additional parameter settings, by allocating different communication frequencies to different channels, the signal is solved for the long-term operation of the subsequent system. Crosstalk problem ensures the stable operation of the system.
在一实施例中，基于接收的多个频率修改信号的信号强度和频率修改信号中的目标频率，调整光伏设备的通信频率，包括：In one embodiment, adjusting the communication frequency of the photovoltaic device based on the signal strength of the received multiple frequency modification signals and the target frequency in the frequency modification signal includes:
基于接收的多个频率修改信号的信号强度，确定信号强度最大的频率修改信号为目标频率修改信号；Based on the signal strengths of multiple received frequency modification signals, determine the frequency modification signal with the largest signal strength as the target frequency modification signal;
基于目标频率修改信号中的目标频率，调整光伏设备的通信频率。Modify the target frequency in the signal based on the target frequency to adjust the communication frequency of the photovoltaic device.
在一实施例中，基于目标频率修改信号的目标频率，调整光伏设备的通信频率，包括：In one embodiment, adjusting the communication frequency of the photovoltaic device based on the target frequency of the target frequency modification signal includes:
基于目标频率修改信号中的目标频率，自动调整光伏设备的通信频率。Modify the target frequency in the signal based on the target frequency to automatically adjust the communication frequency of the photovoltaic equipment.
在一实施例中，基于目标频率修改信号的目标频率，调整光伏设备的通信频率，包括：In one embodiment, adjusting the communication frequency of the photovoltaic device based on the target frequency of the target frequency modification signal includes:
基于频率修改指令和目标频率修改信号中的目标频率调整光伏设备的通信频率，其中频率修改指令包含在频率修改信号中，或者，频率修改指令由各管理模块在发送频率修改信号后发送。The communication frequency of the photovoltaic equipment is adjusted based on the frequency modification instruction and the target frequency in the target frequency modification signal, where the frequency modification instruction is included in the frequency modification signal, or the frequency modification instruction is sent by each management module after sending the frequency modification signal.
在一实施例中，所述方法还包括：In one embodiment, the method further includes:
基于频率修改信号的信号强度和分组标识，生成分组信息；其中分组标识包含在频率修改信号中，分组标识用于标识对应的管理模块。Grouping information is generated based on the signal strength and grouping identification of the frequency modification signal; the grouping identification is included in the frequency modification signal, and the grouping identification is used to identify the corresponding management module.
在一实施例中，所述方法还包括：In one embodiment, the method further includes:
与对应的管理模块通信，上报光伏设备的设备信息以实现光伏设备的组网。Communicate with the corresponding management module and report the equipment information of photovoltaic equipment to realize the networking of photovoltaic equipment.
需要说明的是，在光伏设备对应的实施例中的具体示例可以参考管理模块对应的实施例及可选实施方式中所描述的示例，在光伏设备实施例中不再赘述。It should be noted that for specific examples in the embodiments corresponding to the photovoltaic equipment, reference may be made to the embodiments corresponding to the management module and the examples described in optional implementations, which will not be described again in the embodiments of the photovoltaic equipment.
在一实施例中，还提供了一种通信串扰抑制方法，图7是本申请一些实施例的通信串扰抑制方法的流程图，如图7所示，以该方法应用于图1或图2中的光伏系统为例进行说明，包括以下步骤：In one embodiment, a communication crosstalk suppression method is also provided. Figure 7 is a flow chart of a communication crosstalk suppression method in some embodiments of the present application. As shown in Figure 7, this method is applied to Figure 1 or Figure 2. The photovoltaic system is taken as an example, including the following steps:
步骤S701，多个管理模块接收上位机发送的信号发送指令，该信号发送指令中包括目标频率。Step S701: Multiple management modules receive signal transmission instructions sent by the host computer, and the signal transmission instructions include the target frequency.
上位机依次给各个汇流设备对应的管理模块发送信号发送指令，该信号发送指令中包括目标频率，用于控制各个管理模块向多个光伏设备发送频率修改信号，且各个管理模块对应的目标频率互不相同。The host computer sequentially sends signal sending instructions to the management modules corresponding to each confluence device. The signal sending instructions include the target frequency, which is used to control each management module to send frequency modification signals to multiple photovoltaic devices, and the target frequencies corresponding to each management module are mutually exclusive. Are not the same.
步骤S702，多个管理模块基于该信号发送指令，依次向多个光伏设备发送频率修改信号，多个频率修改信号包含的目标频率互不相同。Step S702: Multiple management modules send instructions based on the signal to sequentially send frequency modification signals to multiple photovoltaic devices. The target frequencies contained in the multiple frequency modification signals are different from each other.
各个管理模块接收到上位机发送的信号发送指令后，以初始通信频率依次给光伏设备发送频率修改信号。各个管理模块发送的频率修改信号的初始信号强度可以一致。各个管理模块发送的频率修改信号中包括对应的目标频率。各个管理模块发送的频率修改信号中包括的目标频率不同。优选的，各个目标频率正交。After receiving the signal sending instructions from the host computer, each management module sends frequency modification signals to the photovoltaic equipment in sequence at the initial communication frequency. The initial signal strength of the frequency modification signal sent by each management module can be consistent. The frequency modification signal sent by each management module includes the corresponding target frequency. The target frequencies included in the frequency modification signals sent by each management module are different. Preferably, the target frequencies are orthogonal.
步骤S703，光伏设备基于接收的多个频率修改信号的信号强度和频率修改信号中的目标频率，调整光伏设备的通信频率。Step S703: The photovoltaic device adjusts the communication frequency of the photovoltaic device based on the signal strength of the received multiple frequency modification signals and the target frequency in the frequency modification signal.
各个光伏设备接收到管理模块发送的频率修改信号后，基于接收到的频率修改信号的信号强度以及频率修改信号中包括的目标频率调整光伏设备的通信频率。各个光伏设备的初始通信频率出厂设置可以一致。After receiving the frequency modification signal sent by the management module, each photovoltaic device adjusts the communication frequency of the photovoltaic device based on the signal strength of the received frequency modification signal and the target frequency included in the frequency modification signal. The factory setting of the initial communication frequency of each photovoltaic device can be consistent.
步骤S704，多个管理模块基于目标频率，调整管理模块的通信频率。Step S704: Multiple management modules adjust the communication frequency of the management module based on the target frequency.
光伏设备完成通信频率的调整后，各个管理模块将本机对应的通信频率也调整为目标频率。After the photovoltaic equipment completes the adjustment of the communication frequency, each management module also adjusts the corresponding communication frequency of the machine to the target frequency.
本实施例的通信串扰抑制方法，通过多个管理模块接收上位机发送的信号发送指令，用于控制管理模块向光伏设备发送频率修改信号和对应的目标频率；通过多个管理模块基于信号发送指令依次向多个光伏设备发送频率修改信号，以便光伏设备接收到多个管理模块对应的频率修改信号；通过光伏设备基于接收的多个频率修改信号的信号强度和频率修改信号中的目标频率调整光伏设备的通信频率，使各光伏设备的通信频率互不相同，避免信号串扰；通过多个管理模块基于目标频率，调整管理模块的通信频率，通过自适应频率修改机制实现了光伏设备的通信频率修改以及管理模块的通信频率修改，在无需增加额外设备或额外进行参数设置的情况下，通过给不同信道分配不同通信频率为后续的系统长期运行解决了信号串扰问题，保证了系统的稳定运行。The communication crosstalk suppression method of this embodiment receives signal sending instructions sent by the host computer through multiple management modules, and is used to control the management module to send frequency modification signals and corresponding target frequencies to the photovoltaic equipment; sends instructions based on the signals through multiple management modules Frequency modification signals are sent to multiple photovoltaic devices in sequence, so that the photovoltaic device receives frequency modification signals corresponding to multiple management modules; the photovoltaic device adjusts the photovoltaic based on the signal strength of the multiple frequency modification signals received and the target frequency in the frequency modification signal. The communication frequency of the equipment makes the communication frequencies of each photovoltaic equipment different from each other to avoid signal crosstalk; through multiple management modules, the communication frequency of the management module is adjusted based on the target frequency, and the communication frequency modification of the photovoltaic equipment is realized through the adaptive frequency modification mechanism. As well as the communication frequency modification of the management module, without adding additional equipment or additional parameter settings, by allocating different communication frequencies to different channels, the problem of signal crosstalk is solved for the long-term operation of the subsequent system, ensuring the stable operation of the system.
在一实施例中，还提供了一种管理模块，应用于图1或图2所示的光伏系统，图8是本申请一些实施例的管理模块的结构框图，如图8所示，该管理模块包括：In one embodiment, a management module is also provided, which is applied to the photovoltaic system shown in Figure 1 or Figure 2. Figure 8 is a structural block diagram of the management module in some embodiments of the present application. As shown in Figure 8, the management module Modules include:
第一接收模块801，用于接收上位机发送的信号发送指令，该信号发送指令中包括目标频率；The first receiving module 801 is used to receive the signal transmission instruction sent by the host computer, where the signal transmission instruction includes the target frequency;
发送模块802，用于基于信号发送指令向多个光伏设备发送频率修改信号，该频率修改信号用于光伏设备基于接收的多个频率修改信号的信号强度和频率修改信号中的目标频率调整其通信频率；多个频率修改信号包含的目标频率互不相同；A sending module 802, configured to send a frequency modification signal to multiple photovoltaic devices based on a signal sending instruction. The frequency modification signal is used by the photovoltaic device to adjust its communication based on the signal strength of the multiple frequency modification signals received and the target frequency in the frequency modification signal. Frequency; multiple frequency modification signals contain different target frequencies;
第一调整模块803，用于基于目标频率，调整管理模块的通信频率。The first adjustment module 803 is used to adjust the communication frequency of the management module based on the target frequency.
在一实施例中，所述光伏设备基于接收的多个所述频率修改信号的信号强度，确定信号强度最大的频率修改信号为目标频率修改信号，并基于目标频率修改信号中的目标频率调整其通信频率。In one embodiment, the photovoltaic device determines the frequency modification signal with the largest signal strength as the target frequency modification signal based on the signal strength of the multiple frequency modification signals received, and adjusts the frequency modification signal based on the target frequency in the target frequency modification signal. Communication frequency.
在一实施例中，所述频率修改信号中还包括频率修改指令，该频率修改指令用于指示光伏设备基于目标频率修改信号中的目标频率调整其通信频率。In one embodiment, the frequency modification signal further includes a frequency modification instruction, which is used to instruct the photovoltaic device to adjust its communication frequency based on the target frequency in the target frequency modification signal.
在一实施例中，所述发送模块还用于：In one embodiment, the sending module is also used to:
在向多个光伏设备发送频率修改信号后，向光伏设备发送频率修改指令，该频率修改指令用于指示光伏设备基于目标频率修改信号中的目标频率调整其通信频率。After frequency modification signals are sent to multiple photovoltaic devices, a frequency modification instruction is sent to the photovoltaic devices. The frequency modification instruction is used to instruct the photovoltaic devices to adjust their communication frequencies based on the target frequency in the target frequency modification signal.
在一实施例中，所述频率修改信号还包括分组标识，该分组标识用于标识对应的管理模块，用于光伏设备基于接收的多个频率修改信号的信号强度和频率修改信号中的分组标识生成分组信息。In one embodiment, the frequency modification signal also includes a group identification, which is used to identify the corresponding management module and is used by the photovoltaic device based on the signal strength of the multiple frequency modification signals received and the group identification in the frequency modification signal. Generate grouping information.
在一实施例中，管理模块还包括：In one embodiment, the management module further includes:
第二发送模块，用于向对应的多个光伏设备发送分组标识，其中光伏设备基于分组标识生成分组信息，分组标识用于标识对应的管理模块。The second sending module is configured to send grouping identifiers to corresponding multiple photovoltaic devices, where the photovoltaic devices generate grouping information based on the grouping identifiers, and the grouping identifiers are used to identify corresponding management modules.
在一实施例中，管理模块还包括：In one embodiment, the management module further includes:
第三接收模块，用于接收对应的多个光伏设备发送的设备信息；The third receiving module is used to receive device information sent by corresponding multiple photovoltaic devices;
组网模块，用于基于该设备信息，对多个光伏设备组网。The networking module is used to network multiple photovoltaic devices based on the device information.
在一实施例中，还提供了一种光伏设备，应用于图1或图2所示的光伏系统，图9是本申请一些实施例的光伏设备的结构框图，如图9所示，该光伏设备包括：In one embodiment, a photovoltaic device is also provided, which is applied to the photovoltaic system shown in Figure 1 or Figure 2. Figure 9 is a structural block diagram of a photovoltaic device according to some embodiments of the present application. As shown in Figure 9, the photovoltaic system Equipment includes:
第二接收模块901，用于接收多个管理模块依次发送的多个频率修改信号，该多个频率修改信号包含的目标频率互不相同；The second receiving module 901 is configured to receive multiple frequency modification signals sent in sequence by multiple management modules, where the target frequencies contained in the multiple frequency modification signals are different from each other;
第二调整模块902，用于基于接收的多个频率修改信号的信号强度和频率修改信号中的目标频率，调整光伏设备的通信频率。The second adjustment module 902 is configured to adjust the communication frequency of the photovoltaic device based on the signal strength of the received multiple frequency modification signals and the target frequency in the frequency modification signal.
在一实施例中，所述调整模块具体用于：In one embodiment, the adjustment module is specifically used to:
基于接收的多个频率修改信号的信号强度，确定信号强度最大的频率修改信号为目标频率修改信号；Based on the signal strengths of multiple received frequency modification signals, determine the frequency modification signal with the largest signal strength as the target frequency modification signal;
基于目标频率修改信号中的目标频率，调整光伏设备的通信频率。Modify the target frequency in the signal based on the target frequency to adjust the communication frequency of the photovoltaic device.
在一实施例中，所述调整模块具体用于：In one embodiment, the adjustment module is specifically used to:
基于目标频率修改信号中的目标频率，自动调整光伏设备的通信频率。Modify the target frequency in the signal based on the target frequency to automatically adjust the communication frequency of the photovoltaic equipment.
在一实施例中，所述调整模块具体用于：In one embodiment, the adjustment module is specifically used to:
基于频率修改指令和目标频率修改信号中的目标频率调整光伏设备的通信频率，其中频率修改指令包含在频率修改信号中，或者，频率修改指令由各管理模块在发送频率修改信号后发送。The communication frequency of the photovoltaic equipment is adjusted based on the frequency modification instruction and the target frequency in the target frequency modification signal, where the frequency modification instruction is included in the frequency modification signal, or the frequency modification instruction is sent by each management module after sending the frequency modification signal.
在一实施例中，光伏设备还包括：In one embodiment, the photovoltaic device further includes:
生成模块，用于基于频率修改信号的信号强度和分组标识，生成分组信息；其中分组标识包含在频率修改信号中，分组标识用于标识对应的管理模块。The generation module is used to generate grouping information based on the signal strength and grouping identification of the frequency modification signal; the grouping identification is included in the frequency modification signal, and the grouping identification is used to identify the corresponding management module.
在一实施例中，光伏设备还包括：In one embodiment, the photovoltaic device further includes:
通信模块，用于与对应的管理模块通信，上报光伏设备的设备信息以实现光伏设备的组网。The communication module is used to communicate with the corresponding management module and report the equipment information of the photovoltaic equipment to realize the networking of the photovoltaic equipment.
关于管理模块和光伏设备的具体限定可以参见上文中对于通信串扰抑制方法的限定，在此不再赘述。上述管理模块和光伏设备中的各个模块可全部或部分通过软件、硬件及其组合来实现。上述各模块可以硬件形式内嵌于或独立于计算机设备中的处理器中，也可以以软件形式存储于计算机设备中的存储器中，以便于处理器调用执行以上各个模块对应的操作。For specific limitations on the management module and photovoltaic equipment, please refer to the limitations on communication crosstalk suppression methods mentioned above, which will not be described again here. The above-mentioned management module and each module in the photovoltaic equipment can be implemented in whole or in part through software, hardware and combinations thereof. Each of the above modules may be embedded in or independent of the processor of the computer device in the form of hardware, or may be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.
需要说明的是，在本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，在本实施例中不再赘述。It should be noted that for specific examples in this embodiment, reference may be made to the examples described in the above-mentioned embodiments and optional implementations, and details will not be described again in this embodiment.
应该明白的是，这里描述的具体实施例只是用来解释这个应用，而不是用来对它进行限定。根据本申请提供的实施例，本领域普通技术人员在不进行创造性劳动的情况下得到的所有其它实施例，均属本申请保护范围。It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit it. According to the embodiments provided in this application, all other embodiments obtained by those of ordinary skill in the art without performing creative work fall within the protection scope of this application.
显然，附图只是本申请的一些例子或实施例，对本领域的普通技术人员来说，也可以根据这些附图将本申请适用于其他类似情况，但无需付出创造性劳动。另外，可以理解的是，尽管在此开发过程中所做的工作可能是复杂和漫长的，但是，对于本领域的普通技术人员来说，根据本申请披露的技术内容进行的某些设计、制造或生产等更改仅是常规的技术手段，不应被视为本申请公开的内容不足。Obviously, the accompanying drawings are only some examples or embodiments of the present application. For those of ordinary skill in the art, the present application can also be applied to other similar situations based on these drawings, but no creative effort is required. In addition, it can be understood that although the work done in this development process may be complex and lengthy, for those of ordinary skill in the art, certain designs and manufacturing based on the technical content disclosed in this application Or production and other changes are only routine technical means and should not be regarded as insufficient content disclosed in this application.
“实施例”一词在本申请中指的是结合实施例描述的具体特征、结构或特性可以包括在本申请的至少一个实施例中。该短语出现在说明书中的各个位置并不一定意味着相同的实施例，也不意味着与其它实施例相互排斥而具有独立性或可供选择。本领域的普通技术人员能够清楚或隐含地理解的是，本申请中描述的实施例在没有冲突的情况下，可以与其它实施例结合。The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily intended to be identical embodiments, nor are they meant to be mutually exclusive, independent, or alternative to other embodiments. Those of ordinary skill in the art will understand, explicitly or implicitly, that the embodiments described in this application may be combined with other embodiments without conflict.
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对专利保护范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请的保护范围应以所附权利要求为准。The above-mentioned embodiments only express several implementation modes of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of patent protection. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the protection scope of the present application. Therefore, the scope of protection of this application should be determined by the appended claims.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311815296.8ACN117478170B (en) | 2023-12-26 | 2023-12-26 | Communication crosstalk suppression method, management module, photovoltaic equipment and photovoltaic system |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311815296.8ACN117478170B (en) | 2023-12-26 | 2023-12-26 | Communication crosstalk suppression method, management module, photovoltaic equipment and photovoltaic system |
| Publication Number | Publication Date |
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| CN117478170Atrue CN117478170A (en) | 2024-01-30 |
| CN117478170B CN117478170B (en) | 2024-08-06 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311815296.8AActiveCN117478170B (en) | 2023-12-26 | 2023-12-26 | Communication crosstalk suppression method, management module, photovoltaic equipment and photovoltaic system |
| Country | Link |
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| CN (1) | CN117478170B (en) |
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