技术领域technical field
本发明涉及一种LCC型直流输电仿真系统和一种现场层设备的模拟装置，属于LCC型直流输电的仿真领域。The invention relates to an LCC type direct current transmission simulation system and a field layer equipment simulation device, belonging to the simulation field of LCC type direct current transmission.
背景技术Background technique
国内的LCC型直流输电实时仿真系统通常采用RealTimeDigitalSimulator(RTDS)来模拟交直流一次系统，并与直流控制保护系统组成闭环系统，RTDS的全实时特性为研究直流输电系统的电磁暂态现象提供了有效途径。Domestic LCC-type DC transmission real-time simulation systems usually use RealTimeDigitalSimulator (RTDS) to simulate the AC-DC primary system, and form a closed-loop system with the DC control and protection system. way.
在LCC型直流输电系统中，LCC型直流输电系统的控制保护设备在运往实际现场前，都需在生产厂内预先进行系统仿真试验，使用现场层设备与该控制保护设备连接来检测控制保护设备的性能。由于LCC型直流输电系统技术密集，现场层设备太多，所以现场层设备无法参与厂内试验，但为了考查整个直流输电系统控制保护设备的性能，保持试验程序与现场实际运行程序的一致性，又需要模拟现场层设备的功能。此外，目前电网公司在试验室针对各实际LCC型直流输电工程都建有其试验仿真系统，同样由于直流现场层设备太多，不可能在仿真系统中以实物形成出现，为保持直流控制保护程序的完整性和一致性，只能通过模拟的方法来实现。In the LCC type direct current transmission system, before the control and protection equipment of the LCC type direct current transmission system is shipped to the actual site, the system simulation test must be carried out in advance in the production plant, and the field layer equipment is used to connect with the control and protection equipment to detect the control and protection equipment performance. Due to the intensive technology of the LCC DC transmission system and too many field-level equipment, the field-level equipment cannot participate in the in-plant test. However, in order to examine the performance of the control and protection equipment of the entire DC transmission system and maintain the consistency between the test program and the actual operation program on site, It is also necessary to simulate the functions of field level devices. In addition, at present, the power grid company has built its test simulation system for each actual LCC type DC transmission project in the laboratory. Also because there are too many DC field layer devices, it is impossible to appear in the simulation system in kind. In order to maintain the DC control protection program Integrity and consistency can only be achieved by means of simulation.
目前，现有技术研究中对于LCC型直流输电现场层设备的模拟方法和模拟系统并没有涉及，现有技术中仅对特定的直流输电工程有部分应用，且存在众多不足，在线调试极不方便，大大限制了LCC型直流输电技术的发展。At present, the simulation method and simulation system of the LCC type DC transmission field level equipment are not involved in the existing technology research. The existing technology is only partially applied to a specific DC transmission project, and there are many deficiencies, and online debugging is extremely inconvenient. , which greatly limits the development of LCC DC transmission technology.
发明内容Contents of the invention
本发明的目的是提供一种LCC型直流输电仿真系统，用以解决现有技术中并没有一种有效的LCC型直流输电现场层设备的模拟系统的问题。本发明同时提供一种现场层设备的模拟装置。The object of the present invention is to provide an LCC type direct current transmission simulation system to solve the problem that there is no effective simulation system for LCC type direct current transmission field level equipment in the prior art. The invention also provides a simulation device for field layer equipment.
为实现上述目的，本发明的方案包括一种LCC型直流输电仿真系统，包括现场层设备模拟装置和用于模拟交直流一次系统的实时数字仿真器，所述现场层设备模拟装置包括工控机、内插在工控机上的用于与待检控制保护设备进行信息交互的现场总线卡和用于与实时数字仿真器进行信息交互的数据采集卡，所述现场总线卡通过现场总线与待检控制保护设备相连，所述数据采集卡通信连接所述实时数字仿真器，所述现场总线卡与所述数据采集卡通过PCI总线连接。In order to achieve the above object, the solution of the present invention includes a kind of LCC type direct current transmission simulation system, including field layer equipment simulation device and a real-time digital simulator for simulating AC-DC primary system, said field layer equipment simulation device includes industrial computer, A field bus card inserted in the industrial computer for information interaction with the control and protection equipment to be checked and a data acquisition card for information interaction with the real-time digital simulator, the field bus card communicates with the control and protection equipment to be checked through the field bus The devices are connected, the data acquisition card is connected to the real-time digital simulator by communication, and the field bus card is connected to the data acquisition card through a PCI bus.
所述工控机内部运行有现场层设备数字模型，所述现场层设备数字模型用于模拟对应的现场层设备，提供对应现场层设备的模拟参数。The digital model of the field layer equipment runs inside the industrial computer, and the digital model of the field layer equipment is used to simulate the corresponding field layer equipment and provide simulation parameters of the corresponding field layer equipment.
所述工控机利用图形化引擎编程软件，以堆积木的形式来开发设计现场层模拟装置的应用程序，现场层设备数字模型输出的模拟参数通过该图形化引擎编程软件来设置、调试和在线监视。The industrial computer uses the graphical engine programming software to develop and design the application program of the field layer simulation device in the form of building blocks, and the simulation parameters output by the digital model of the field layer equipment are set, debugged and monitored online through the graphical engine programming software .
所述仿真系统中包括若干个所述现场层模拟装置，所述现场层模拟装置之间通过局域网进行连接。The simulation system includes several field layer simulation devices, and the field layer simulation devices are connected through a local area network.
现场总线卡接收控制保护设备下发的开关分合闸命令，对应的所述数字模型根据接收的开关分合闸命令进行相应倒闸模拟操作，现场层设备模拟装置把所述开刀闸状态连同数据采集卡采集到的各种模拟量、数字量打包成现场总线报文，上传给控制保护设备；数据采集卡采集交直流系统中的交流电流、电压、直流电流、电压信号及某些开关刀闸状态信息，同时把从现场总线接收到的开关刀闸分合命令发给所述实时数字仿真器。The field bus card receives the switch opening and closing command issued by the control and protection equipment, and the corresponding digital model performs the corresponding switching simulation operation according to the received switch opening and closing command. The various analog and digital quantities collected by the acquisition card are packaged into fieldbus messages and uploaded to the control and protection equipment; the data acquisition card collects AC current, voltage, DC current, voltage signals and some switch switches state information, and at the same time send the switch switch opening and closing command received from the field bus to the real-time digital simulator.
所述实时数字仿真器为RTDS实时仿真仪。The real-time digital simulator is an RTDS real-time simulator.
一种现场层设备模拟装置，包括工控机、内插在工控机上的用于与待检控制保护设备进行信息交互的现场总线卡和用于与实时数字仿真器进行信息交互的数据采集卡，所述现场总线卡与所述数据采集卡通过PCI总线连接。A device simulation device at the field level, including an industrial computer, a field bus card inserted in the industrial computer for information interaction with the control and protection equipment to be inspected, and a data acquisition card for information interaction with a real-time digital simulator. The field bus card is connected with the data acquisition card through the PCI bus.
所述工控机内部运行有现场层设备数字模型，所述现场层设备数字模型用于模拟对应的现场层设备，提供对应现场层设备的模拟参数。The digital model of the field layer equipment runs inside the industrial computer, and the digital model of the field layer equipment is used to simulate the corresponding field layer equipment and provide simulation parameters of the corresponding field layer equipment.
所述工控机利用图形化引擎编程软件，以堆积木的形式来开发设计现场层模拟装置的应用程序，现场层设备数字模型输出的模拟参数通过该图形化引擎编程软件来设置、调试和在线监视。The industrial computer uses the graphical engine programming software to develop and design the application program of the field layer simulation device in the form of building blocks, and the simulation parameters output by the digital model of the field layer equipment are set, debugged and monitored online through the graphical engine programming software .
现场总线卡接收控制保护设备下发的开关分合闸命令，对应的所述数字模型根据接收的开关分合闸命令进行相应倒闸模拟操作，现场层设备模拟装置把所述开刀闸状态连同数据采集卡采集到的各种模拟量、数字量打包成现场总线报文，上传给控制保护设备；数据采集卡采集交直流系统中的交流电流、电压、直流电流、电压信号及某些开关刀闸状态信息，同时把从现场总线接收到的开关刀闸分合命令发给所述实时数字仿真器。The field bus card receives the switch opening and closing command issued by the control and protection equipment, and the corresponding digital model performs the corresponding switching simulation operation according to the received switch opening and closing command. The various analog and digital quantities collected by the acquisition card are packaged into fieldbus messages and uploaded to the control and protection equipment; the data acquisition card collects AC current, voltage, DC current, voltage signals and some switch switches state information, and at the same time send the switch switch opening and closing command received from the field bus to the real-time digital simulator.
对于LCC型换流器数量庞大的就地现场层测量控制设备，可采用本发明提供的仿真系统以及现场层设备模拟装置来减少仿真设备的数量、保持直流控制保护软件的完整性和一致性。For the on-site field layer measurement and control equipment with a large number of LCC type converters, the simulation system and field layer equipment simulation device provided by the present invention can be used to reduce the number of simulation equipment and maintain the integrity and consistency of the DC control and protection software.
以通用工控机和PCI板卡为硬件平台，涵盖多种数据通信方式，增加了系统的柔性，可以实现不同厂家、不同技术路线的LCC型直流输电现场层设备的模拟，实现了对现场层设备的准确模拟，更全面地检测LCC型直流输电系统的性能。With the general industrial computer and PCI board as the hardware platform, it covers a variety of data communication methods, increases the flexibility of the system, and can realize the simulation of LCC-type direct current transmission field-level equipment of different manufacturers and different technical routes, and realizes the field-level equipment Accurate simulation of LCC-type direct current transmission system performance more comprehensively.
附图说明Description of drawings
图1是LCC型直流输电仿真系统结构示意图；Figure 1 is a schematic diagram of the structure of the LCC type DC transmission simulation system;
图2是现场层设备模拟装置结构示意图；Fig. 2 is a schematic diagram of the structure of the field layer equipment simulation device;
图3是现场层设备模拟装置的具体实施流程图；Fig. 3 is a specific implementation flow chart of the field layer equipment simulation device;
图4是现场层设备模拟装置中的模拟程序的工作流程图。Fig. 4 is a work flow chart of the simulation program in the field layer equipment simulation device.
具体实施方式detailed description
下面结合附图对本发明做进一步详细的说明。The present invention will be described in further detail below in conjunction with the accompanying drawings.
LCC型直流输电仿真系统实施例Embodiment of LCC type direct current transmission simulation system
如图1所示，LCC型直流输电仿真系统包括运行人员控制层设备、控制层设备(控制保护设备)、现场层设备模拟装置和RTDS实时仿真仪，RTDS实时仿真仪用于模拟交直流一次系统。As shown in Figure 1, the LCC type DC transmission simulation system includes the operator control layer equipment, control layer equipment (control protection equipment), field layer equipment simulation device and RTDS real-time simulator. The RTDS real-time simulator is used to simulate the AC-DC primary system .
直流输电系统中的直流现场层的测控设备通过现场层设备模拟装置来模拟，具体为：在现场层设备模拟装置中设置有专门开发的数字模型，以此模型来对应模拟真实的现场层测控设备，一个数字模型对应着一个现场层设备。另外，在需要模拟多个现场层测控设备的情况下，现场层设备模拟装置可以设置多个。在本实施例中，各个现场层设备模拟装置按照功能分区，并通过局域网连接在一起。工作人员可以通过远程登陆或就地进行控制和监视。The measurement and control equipment of the DC field layer in the DC transmission system is simulated by the field layer equipment simulation device, specifically: a specially developed digital model is set in the field layer equipment simulation device, and this model is used to simulate the real field layer measurement and control equipment , a digital model corresponds to a field layer device. In addition, in the case of needing to simulate multiple on-site layer measurement and control equipment, multiple on-site layer equipment simulation devices can be set. In this embodiment, each field layer device simulation device is partitioned according to function and connected together through a local area network. The staff can control and monitor through remote login or on-site.
任意一个现场层设备模拟装置中，如图2所示，包括一个通用工控机，该工控机含有PCI插槽，在插槽内插有PCI板卡，PCI板卡根据不同的LCC型直流输电控制保护平台路线和数据通讯协议进行选配。一个工控机上的PCI板卡分为现场总线卡和数据采集卡，现场总线卡用于与控制保护设备进行信息交互，数据采集卡用于与RTDS实时仿真仪进行信息交互，RTDS实时仿真仪用于模拟交直流一次系统。一个工控机中的现场总线卡和数据采集卡通过工控机内部的PCI总线进行信息交互。现场总线卡通过现场总线(如CAN、Profibus、TDM等)与控制保护设备进行通信，数据采集卡通过硬接线与RTDS实时仿真仪进行通信。Any field-level equipment simulation device, as shown in Figure 2, includes a general-purpose industrial computer, which contains a PCI slot, and a PCI board is inserted in the slot. The PCI board is controlled according to different LCC-type DC transmission The protection platform route and data communication protocol are selected. The PCI board on an industrial computer is divided into a field bus card and a data acquisition card. The field bus card is used for information interaction with the control and protection equipment, the data acquisition card is used for information interaction with the RTDS real-time simulator, and the RTDS real-time simulator is used for Simulate AC and DC primary systems. The field bus card and the data acquisition card in an industrial computer exchange information through the PCI bus inside the industrial computer. The field bus card communicates with the control and protection equipment through the field bus (such as CAN, Profibus, TDM, etc.), and the data acquisition card communicates with the RTDS real-time simulator through hard wiring.
由于LCC型直流控制层设备(控制保护设备)与现场层设备通信协议的不同，可以选择不同的现场总线卡，而数据采集卡与RTDS实时仿真仪之间交互的信息主要是一些开入、开出及模拟量输入、输出信号。Due to the difference in communication protocol between the LCC type DC control layer equipment (control protection equipment) and the field layer equipment, different field bus cards can be selected, and the information exchanged between the data acquisition card and the RTDS real-time simulator is mainly some open input, open output and analog input and output signals.
工控机中设置有对应的现场层设备的模拟程序，模拟程序通过专用的图形化引擎编程软件来编写、调试及在线监视。现场总线卡的主要工作过程是接收上层控制保护设备下发的开关分合闸命令，模拟程序中的开关断路器等数字模型根据接收的命令进行相应倒闸操作模拟，并返回最后的开关断路器状态，最后现场层设备模拟装置把这些开刀闸状态连同通过数据采集卡采集到的各种模拟量、数字量打包成标准的现场总线报文，上传给上层的控制保护设备。The simulation program of the corresponding field layer equipment is set in the industrial computer, and the simulation program is written, debugged and monitored online through the special graphical engine programming software. The main working process of the field bus card is to receive the switch opening and closing commands issued by the upper control and protection equipment, and the digital models such as switch circuit breakers in the simulation program perform corresponding switching operation simulations according to the received commands, and return to the final switch circuit breaker Finally, the equipment simulation device at the field layer packs these opening statuses together with various analog and digital quantities collected through the data acquisition card into standard fieldbus messages and uploads them to the upper-level control and protection equipment.
现场层设备模拟装置向下以硬接线方式与RTDS实时仿真仪通信，主要工作过程是通过数据采集卡(模拟量输入/输出，数字量输入/输出卡)采集交直流场必要的一些交流电流、电压，直流电流、电压信号及关键的开关刀闸状态信息，同时还负责把从现场总线接收到的开关刀闸分合命令以开出的方式发给RTDS实时仿真仪。The equipment simulation device at the field layer communicates with the RTDS real-time simulator in a hard-wired manner downwards. The main working process is to collect some necessary AC currents, Voltage, DC current, voltage signal and key switch switch status information, and is also responsible for sending the switch switch switch command received from the field bus to the RTDS real-time simulator in the form of output.
上述已对LCC型直流输电实时仿真系统中现场层设备模拟装置中的硬件结构进行了描述，而支持该仿真系统的功能运行的软件程序则使用自主研发的专业系统集成开发环境进行开发，该元件程序设置在工控机中，通过工控机实现其功能。专业系统集成开发环境是利用C#编程语言来开发实现的，C#编程语言是面向对象的程序设计语言，利用其继承和多态等特性，采用事件驱动的广式，大大降低程序的开发难度。图3是LCC型直流输电实时仿真系统中现场层设备模拟装置的具体实施流程图，其中，图形化集成开发环境的具体实施方法如下如述：The above has described the hardware structure of the field layer equipment simulation device in the LCC type direct current transmission real-time simulation system, and the software program supporting the function operation of the simulation system is developed using the self-developed professional system integrated development environment. The program is set in the industrial computer, and its functions are realized through the industrial computer. The professional system integrated development environment is developed by using the C# programming language. The C# programming language is an object-oriented programming language. By using its characteristics of inheritance and polymorphism, it adopts an event-driven wide-ranging method, which greatly reduces the difficulty of program development. Fig. 3 is a specific implementation flowchart of the field layer equipment simulation device in the LCC type direct current transmission real-time simulation system, wherein the specific implementation method of the graphical integrated development environment is as follows:
1、根据现场层模拟装置要完成的功能，对图形化引擎的编程软件提出详细的可行性分析及需求分析。1. According to the functions to be completed by the field-level simulation device, a detailed feasibility analysis and demand analysis are put forward for the programming software of the graphical engine.
2、根据可行性及需求分析，进行类设计，对数据进行封装。主要设计的数据类型有应用程序类、页面程序类、底层驱动功能块类、输入引脚类、输出引脚类。2. Based on feasibility and demand analysis, class design is carried out and data is encapsulated. The data types mainly designed include application program class, page program class, underlying driver function block class, input pin class, and output pin class.
3、设计一套规则用来记录各底层驱动功能块的输入输出连接关系。3. Design a set of rules to record the input-output connection relationship of each underlying driver function block.
4、设计一套底层驱动功能块的排序规则及应用程序代码生成原则。4. Design a set of ordering rules for underlying driver function blocks and principles for generating application code.
5、添加纠错排错、在线调试、在线监视等功能。5. Add functions such as error correction and troubleshooting, online debugging, online monitoring, etc.
6、设计底层驱动功能块的外观及其对应的实际源程序代码。6. Design the appearance of the underlying driver function block and its corresponding actual source program code.
7、应用设计好的底层驱动功能块进行现场层模拟器的应用程序的开发设计。7. Use the designed underlying driver function blocks to develop and design the application program of the field layer simulator.
根据已开发好的现场层设备数字模型和底层驱动控制功能块，利用上述图形化引擎编程软件，以堆积木的形式来开发设计现场层模拟装置的应用程序。According to the digital model of field layer equipment and the underlying drive control function blocks that have been developed, use the above-mentioned graphical engine programming software to develop and design the application program of the field layer simulation device in the form of building blocks.
图4是现场层设备模拟装置中的模拟程序的流程图，它是一个周期性中断服务程序，中断时间可根据实际现场层设备的运行参数来设置。现场层模拟装置的应用程序满足要求后，投入仿真应用。Fig. 4 is a flow chart of the simulation program in the field layer equipment simulation device, which is a periodic interrupt service program, and the interruption time can be set according to the actual operating parameters of the field layer equipment. After the application program of the field layer simulation device meets the requirements, it will be put into simulation application.
上述实施例中，实时数字仿真器以RTDS实时仿真仪为例，但是本发明并不局限于该仿真仪，作为其他的实施例，实时数字仿真器还可以使用RT-LAB实时仿真装置。In the above embodiment, the real-time digital simulator is RTDS real-time simulator as an example, but the present invention is not limited to this simulator, as other embodiments, the real-time digital simulator can also use RT-LAB real-time simulation device.
现场层设备模拟装置实施例Embodiment of field layer equipment simulation device
该现场层设备模拟装置在上述LCC型直流输电仿真系统实施例中已经给出了具体描述，这里不再赘述。The device simulation device at the field layer has been specifically described in the above-mentioned embodiment of the LCC type direct current transmission simulation system, and will not be repeated here.
以上给出了具体的实施方式，但本发明不局限于所描述的实施方式。本发明的基本思路在于上述基本方案，对本领域普通技术人员而言，根据本发明的教导，设计出各种变形的模型、公式、参数并不需要花费创造性劳动。在不脱离本发明的原理和精神的情况下对实施方式进行的变化、修改、替换和变型仍落入本发明的保护范围内。Specific embodiments have been given above, but the present invention is not limited to the described embodiments. The basic idea of the present invention lies in the above-mentioned basic scheme. For those of ordinary skill in the art, according to the teaching of the present invention, it does not need to spend creative labor to design various deformation models, formulas, and parameters. Changes, modifications, substitutions and variations to the implementation without departing from the principle and spirit of the present invention still fall within the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510867356.XACN105446165A (en) | 2015-12-01 | 2015-12-01 | LCC direct current power transmission simulation system and field layer equipment simulation device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510867356.XACN105446165A (en) | 2015-12-01 | 2015-12-01 | LCC direct current power transmission simulation system and field layer equipment simulation device |
| Publication Number | Publication Date |
|---|---|
| CN105446165Atrue CN105446165A (en) | 2016-03-30 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510867356.XAPendingCN105446165A (en) | 2015-12-01 | 2015-12-01 | LCC direct current power transmission simulation system and field layer equipment simulation device |
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| Date | Code | Title | Description |
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| RJ01 | Rejection of invention patent application after publication | Application publication date:20160330 | |
| RJ01 | Rejection of invention patent application after publication |