CN101847865A - Electric network relay protection and fault analysis system - Google Patents
Electric network relay protection and fault analysis systemDownload PDFInfo
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Abstract
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Description
Translated fromChinese技术领域technical field
本发明涉及电网继电保护及故障分析系统。The invention relates to a power grid relay protection and fault analysis system.
背景技术Background technique
随着电网规模的不断扩大，运行方式越来越复杂，继电保护的运行及动作情况对系统安全的影响也随之增加。另一方面随着继电保护装置数字化程度的提高，在电网运行及发生故障时保护信息的传输量大大增加，由此而带来的电网调度运行人员及保护专业人员所需关注处理的信息量也成倍增长，客观上增加了电网运行人员判断事故性质、处理事故的难度；恢复系统运行所需要的时间加长。对于电网调度而言，在电力系统发生故障尤其是较大范围内的故障时，电网调度运行人员对系统故障的处理过程和系统恢复的过程将在相当大的程度上取决于当时所掌握电网的拓扑结构、系统电压和频率及系统的潮流分布情况、开关的动作情况及保护装置的动作行为等信息的判断和分析。因此，在电网发生事故时，有效地及时的掌握故障的信息，是进行事故判断、处理和恢复系统的重要技术难题，这一技术难题迄今未能得到很好的解决。As the scale of the power grid continues to expand, the operation mode becomes more and more complex, and the influence of the operation and action of relay protection on system security also increases. On the other hand, with the improvement of the digitalization of relay protection devices, the amount of transmission of protection information during power grid operation and failures has greatly increased, resulting in the amount of information that power grid dispatching operators and protection professionals need to pay attention to. It also increases exponentially, which objectively increases the difficulty for power grid operators to judge the nature of the accident and deal with the accident; the time required to restore the system operation is lengthened. For power grid dispatching, when a fault occurs in the power system, especially a large-scale fault, the process of handling the system fault and the process of system recovery by the power grid dispatching operator will depend to a considerable extent on the current state of the power grid. Judgment and analysis of information such as topology structure, system voltage and frequency, power flow distribution of the system, switch operation, and protection device operation behavior. Therefore, when an accident occurs in the power grid, it is an important technical problem to carry out accident judgment, processing and recovery system, and this technical problem has not been well solved so far.
发明内容Contents of the invention
本发明是为避免上述现有技术所存在的不足之处，提供一种电网继电保护及故障分析系统，以便在电网发生事故时有效地及时掌握故障的信息，从而进行事故判断、处理和恢复。In order to avoid the shortcomings of the above-mentioned prior art, the present invention provides a power grid relay protection and fault analysis system, so that when an accident occurs in the power grid, the information of the fault can be effectively and timely grasped, so that the accident can be judged, processed and recovered .
本发明解决技术问题采用如下技术方案。The present invention solves the technical problem by adopting the following technical solutions.
本发明电网继电保护及故障分析系统的结构特点是由子站系统、分站系统和主站系统构成信息网络；其中：The structural characteristics of the power grid relay protection and fault analysis system of the present invention are composed of a substation system, a substation system and a master station system to form an information network; wherein:
所述子站系统位于变电站内，各子站系统通过以太网、SDH数字网或专线以及载波的方式连接到分站系统，同一个子站系统可以连接到多个级别的分站系统；The substation system is located in the substation, and each substation system is connected to the substation system through Ethernet, SDH digital network or dedicated line and carrier, and the same substation system can be connected to multiple levels of substation systems;
所述主站系统位于调度中心，各分站系统通过电力调度数据网络与主站系统相连接；The main station system is located in the dispatching center, and each substation system is connected with the main station system through the power dispatching data network;
所述主站系统、分站系统和各子站系统呈辐射状分布，系统中所有数据通过网络汇集在主站系统，各分站系统可直接获得所有子站系统数据，也可通过主站系统获得与其关联的非直连的子站系统数据；The main station system, substation system and each substation system are radially distributed, and all data in the system are collected in the main station system through the network, and each substation system can directly obtain all substation system data, and can also obtain Obtain system data of non-directly connected substations associated with it;
所述信息网络通过变电站中各智能装置传送的信息监视电网运行状况，并通过获取的信息分析电网故障以及提供继电保护。The information network monitors the operation status of the power grid through the information transmitted by the intelligent devices in the substation, and analyzes the faults of the power grid and provides relay protection through the obtained information.
本发明电网继电保护及故障分析系统的结构特点也在于：The structural features of the power grid relay protection and fault analysis system of the present invention also lie in:
所述主站系统通过对各子站系统进行参数配置，自动召唤子站系统将各种配置文件生成模型描述文件。The main station system configures the parameters of each sub-station system, and automatically calls the sub-station system to generate a model description file from various configuration files.
在所述主站系统与子站系统之间配置多个前置机，对任一变电站的通信通道可以在相同或不同的前置机上形成双重备份，系统可以自动调整和切换通信通道。Multiple front-end processors are arranged between the main station system and the sub-station system, and the communication channel of any substation can be double-backed up on the same or different front-end processors, and the system can automatically adjust and switch communication channels.
在所述信息网络中，采用IEC61850通信体系统作为系统间信息交换体系。In the information network, the IEC61850 communication body system is used as the inter-system information exchange system.
在所述系统中建立IEC61970模型体系。The IEC61970 model system is established in the system.
所述变电站中各智能装置包括有微机保护装置、故障录波装置。Each intelligent device in the substation includes a microcomputer protection device and a fault recording device.
与已有技术相比，本发明有益效果体现在：Compared with the prior art, the beneficial effects of the present invention are reflected in:
1、本发明中主站系统只需要对子站通道的参数进行配置，即可自动的召唤子站各种配置文件生成模型描述文件，例如SCD描述、ICD描述、ITB描述、M2I描述，甚至SVG图形，通过这些描述文件自动的生成主站通信信息模型，从而与子站系统或分站系统实现自动的通信，达到主站的免维护。由于调度分级和设备管辖的因素，这就在很大程度上简化和规范了主站的维护和管理工作，有利于系统建设的分布实施。1. In the present invention, the master station system only needs to configure the parameters of the substation channel, and can automatically call various configuration files of the substation to generate model description files, such as SCD description, ICD description, ITB description, M2I description, and even SVG Graphics, through these description files, the communication information model of the main station is automatically generated, so as to realize automatic communication with the sub-station system or sub-station system, and achieve the maintenance-free of the main station. Due to the factors of scheduling classification and equipment jurisdiction, this simplifies and standardizes the maintenance and management of the master station to a large extent, and is conducive to the distributed implementation of system construction.
2、为了统一变电站从子站到主站的信息传输过程，屏蔽不同协议栈的差异性，本发明系统可以引入最新的国际标准IEC61850，实现站内保护装置的接入、信息转换、信息的映射，使IEC61850成为本系统间信息交换的主要技术体系。2. In order to unify the information transmission process from the substation to the main station in the substation and shield the differences of different protocol stacks, the system of the present invention can introduce the latest international standard IEC61850 to realize the access of protection devices in the station, information conversion, and information mapping. Make IEC61850 the main technical system for information exchange between the systems.
3、本发明可以通过引入IEC61970模型体系，使系统不仅仅着眼在目前对变电站二次信息的接入，更可以考虑未来应用以及向其它系统的融合和延伸，以统一的一次、二次模型支持应用的发展、建立更为复杂的应用功能，实现系统应用接口的标准化，支持规范化的应用集成。3. The present invention can introduce the IEC61970 model system, so that the system not only focuses on the current access to the secondary information of the substation, but also considers future applications and integration and extension to other systems, and is supported by a unified primary and secondary model The development of applications, the establishment of more complex application functions, the standardization of system application interfaces, and support for standardized application integration.
4、本发明在具体实施中的建模工具可基于IEC61970-CIM，SVG等标准，以支持一、二次一体化建模，融合以往图形建模的优势，面向主站系统的一、二次CIM模型进行模型和图形的支持。不仅具有图模一体化的显示和编辑手段，而且充分应用了系统平台针对CIM模型的编辑组件，以可定制的树型、超文本、图形等方式从不同侧面展示和编辑模型对象及其关系。4. The modeling tool in the specific implementation of the present invention can be based on IEC61970-CIM, SVG and other standards to support primary and secondary integrated modeling, integrate the advantages of previous graphic modeling, and face the primary and secondary CIM models support models and graphics. Not only has the integrated display and editing means of graphics and models, but also makes full use of the editing components of the system platform for CIM models to display and edit model objects and their relationships from different sides in ways such as customizable tree, hypertext, and graphics.
5、本发明系统支持平台采用了IEC61850、IEC61970、XML、SVG等标准，不仅数据服务采用标准化的CIM，而且平台对应用组件提供了强大的支持，例如图形显示、对象检索、计算分析等，完整的支持了系统应用功能的集成和二次开发。由于系统平台支持不仅涉及到二次信息，也完整的包含了一次信息模型，因此也在一定程度上促进了调度中心的数据共享和应用集成。5. The system support platform of the present invention adopts standards such as IEC61850, IEC61970, XML, and SVG. Not only the data service adopts standardized CIM, but also the platform provides powerful support for application components, such as graphic display, object retrieval, calculation analysis, etc., complete It supports the integration and secondary development of system application functions. Since the system platform support not only involves the secondary information, but also completely includes the primary information model, it also promotes the data sharing and application integration of the dispatch center to a certain extent.
附图说明Description of drawings
图1为本发明中各标准在平台中作用示意图。Fig. 1 is a schematic diagram of the function of each standard in the platform in the present invention.
图2为本发明系统构成示意图。Fig. 2 is a schematic diagram of the system configuration of the present invention.
以下通过具体实施方式，并结合附图对本发明作进一步说明。The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.
具体实施方式Detailed ways
参见图1、图2，本实施例中由各子站系统、分站系统和主站系统构成信息网络；其中：Referring to Fig. 1, Fig. 2, among the present embodiment, constitute information network by each substation system, substation system and main station system; Wherein:
子站系统位于变电站内，各子站系统通过以太网、SDH数字网或专线以及载波的方式连接到分站系统，同一个子站系统可以连接到多个级别的分站系统；主站系统位于调度中心，各分站系统通过电力调度数据网络与主站系统相连接；主站系统、分站系统和各子站系统呈辐射状分布，系统中所有数据通过网络汇集在主站系统，各分站系统可直接获得所有子站系统数据，也可通过主站系统获得与其关联的非直连的子站系统数据；信息网络通过变电站中各智能装置传送的信息监视电网运行状况，并通过获取的信息分析电网故障以及提供继电保护。The substation system is located in the substation, and each substation system is connected to the substation system through Ethernet, SDH digital network or dedicated line and carrier. The same substation system can be connected to multiple levels of substation systems; the main station system is located in the dispatching center, each substation system is connected to the main station system through the power dispatching data network; The system can directly obtain the system data of all substations, and can also obtain the data of the non-directly connected substation systems associated with it through the main station system; Analyze grid faults and provide relay protection.
具体实施中，相应的系统设置包括：In specific implementation, the corresponding system settings include:
1、引入IEC61850通信体系1. Introduce IEC61850 communication system
为了统一变电站到子站到主站的信息传输过程，屏蔽不同协议栈的差异性，系统引入国际标准IEC61850，实现站内保护装置的接入、信息转换、信息的映射，使IEC61850成为本系统间信息交换的主要技术体系。In order to unify the information transmission process from the substation to the substation to the main station, and to shield the differences of different protocol stacks, the system introduces the international standard IEC61850 to realize the access of protection devices in the station, information conversion, and information mapping, making IEC61850 an inter-system information The main technical system of the exchange.
2、引入IEC61970模型体系2. Introduce the IEC61970 model system
系统并没有仅仅着眼于目前对变电站二次信息的接入，而是考虑到未来的应用，以及系统向其它系统的融合和延伸，为了以统一的一次、二次模型支持应用的发展，建立复杂的应用功能；另一方面，也为了实现系统应用接口的标准化，支持规范化的应用集成，在本系统中引入IEC61970-CIM的模型体系。The system does not only focus on the current access to secondary information of substations, but considers future applications and the integration and extension of the system to other systems. In order to support the development of applications with a unified primary and secondary model, a complex On the other hand, in order to realize the standardization of system application interface and support standardized application integration, the model system of IEC61970-CIM is introduced into this system.
3、支持一、二次一体化模型的建模工具3. Modeling tools that support primary and secondary integrated models
系统的建模工具基于IEC61970-CIM，SVG等标准，支持一、二次一体化建模，并且融合了以往图形建模的优势，面向主站系统的一、二次CIM模型进行模型和图形的支持。不仅具有图模一体化的显示和编辑手段，而且充分应用了系统平台针对CIM模型的编辑组件，以可定制的树型、超文本、图形等方式从不同侧面展示和编辑模型对象及其关系。The modeling tool of the system is based on IEC61970-CIM, SVG and other standards, supports primary and secondary integrated modeling, and integrates the advantages of previous graphic modeling, and performs model and graphic modeling for the primary and secondary CIM models of the master station system. support. Not only has the integrated display and editing means of graphics and models, but also makes full use of the editing components of the system platform for CIM models to display and edit model objects and their relationships from different sides in ways such as customizable tree, hypertext, and graphics.
4、解决传统保护接入系统的过渡方法4. The transition method to solve the traditional protection access system
系统采用若干描述文件达到保护接入系统的规范化，包括标准的ICD描述(保护装置信息模型)、ITB描述(保护装置信息点表)、M2I描述(信息电于信息语义的对应)等。由于这些规范化的描述都是依据IEC61850体系的，因此这种实现规范化的方法事实上代表了由传统保护装置向IEC61850通信体系过渡的一种可行方案，所实现的是对传统保护装置信息的一种面向IEC61850信息模型的封装和映射。The system uses several description files to standardize the protection access system, including standard ICD description (protection device information model), ITB description (protection device information point table), M2I description (correspondence between information and information semantics), etc. Since these standardized descriptions are all based on the IEC61850 system, this method of standardization actually represents a feasible solution for the transition from traditional protection devices to the IEC61850 communication system, and what is realized is a traditional protection device information. Encapsulation and mapping for IEC61850 information model.
5、支持主站免维护的分布式管理和维护机制5. Support the maintenance-free distributed management and maintenance mechanism of the main station
系统为子站对主站接入的免维护是本系统的一大突出特色，主站只需要对子站通道的参数进行配置，即可自动的召唤子站各种配置文件生成模型描述文件，例如SCD描述、ICD描述、ITB描述、M2I描述，甚至SVG图形，通过这些描述文件自动的生成主站通信信息模型，从而与子站(分站)实现自动的通信，达到主站的免维护。由于调度分级和设备管辖的因素，这就在很大程度上简化和规范了主站的维护和管理工作，有利于系统建设的分布实施。The maintenance-free access of the system to the master station by the substation is a prominent feature of this system. The master station only needs to configure the parameters of the substation channel, and can automatically call various configuration files of the substation to generate a model description file. For example, SCD description, ICD description, ITB description, M2I description, and even SVG graphics. Through these description files, the main station communication information model is automatically generated, so as to realize automatic communication with sub-stations (sub-stations) and achieve maintenance-free main station. Due to the factors of scheduling classification and equipment jurisdiction, this simplifies and standardizes the maintenance and management of the master station to a large extent, and is conducive to the distributed implementation of system construction.
6、具有国际标准的系统支持及集成平台6. System support and integration platform with international standards
系统支持平台采用了IEC61850、IEC61970、XML、SVG等标准，不仅数据服务采用标准化的CIM，而且平台对应用组件提供了强大的支持，例如图形显示、对象检索、计算分析等，完整的支持了系统应用功能的集成和二次开发。由于系统平台支持不仅涉及到二次信息，也完整的包含了一次信息模型，因此也在一定程度上促进了调度中心的数据共享和应用集成。The system support platform adopts IEC61850, IEC61970, XML, SVG and other standards. Not only the data service adopts standardized CIM, but also the platform provides powerful support for application components, such as graphic display, object retrieval, calculation and analysis, etc., completely supporting the system Integration and secondary development of application functions. Since the system platform support not only involves the secondary information, but also completely includes the primary information model, it also promotes the data sharing and application integration of the dispatch center to a certain extent.
7、可定制的电气量生成和显示技术7. Customizable electrical quantity generation and display technology
在系统的支持平台中，为了应用对录波数据的分析、计算和显示，提供一种计算模板定制的方式。定制的过程是以录波基础数据为基础的分析数据进行再计算，形成新的电气量的过程，包括了常用的时域和频域运算。并且系统支持平台还提供了针对波型数据的通用显示方法，可由应用程序进行自由的组合。In the support platform of the system, in order to apply the analysis, calculation and display of wave recording data, a way of customizing the calculation template is provided. The customization process is to recalculate the analysis data based on the wave recording basic data to form a new electrical quantity, including commonly used time domain and frequency domain calculations. And the system support platform also provides a general display method for waveform data, which can be combined freely by the application program.
8、基于一二次模型关系的网故障诊断方法8. Network fault diagnosis method based on the relationship between primary and secondary models
为了对应用提供电网故障诊断方法的支持，系统支持平台包含可以不断扩展的诊断计算组件。由于系统具有完整的电网一次模型和二次模型，并且建立了一、二次关系模型，因此可以支持较为先进的电网故障诊断方法。In order to provide support for grid fault diagnosis methods for applications, the system support platform includes diagnostic computing components that can be continuously expanded. Since the system has a complete primary model and secondary model of the power grid, and has established a primary and secondary relationship model, it can support more advanced grid fault diagnosis methods.
9、电网故障的信息自动综合技术9. Information automatic synthesis technology for power grid faults
为了提高系统对故障管理的效率，系统提供故障信息自动综合的技术，可以将原本分离的各种信息，例如保护出口信息，开关跳闸信息、录波启动信息等，基于本系统所建立的数据模型，进行智能的逻辑分析，将相关的信息汇总成组，给出简单报告，方便运行人员的识别和进一步的分析和管理。In order to improve the efficiency of the system for fault management, the system provides automatic synthesis of fault information technology, which can separate various information, such as protection exit information, switch trip information, wave recording start information, etc., based on the data model established by this system , carry out intelligent logical analysis, gather relevant information into groups, and give simple reports, which are convenient for operators to identify and further analyze and manage.
10、多通道、多前置的通道备份和负载均衡技术10. Multi-channel, multi-front channel backup and load balancing technology
本系统面对调度数据网的技术发展，充分利用了调度数据网的优势，在主站系统与子站系统的通信可靠性上采用了多通道、多前置、前置负载均衡、通道任意组合备份等多种技术。即配置多个前置机，对任一变电站的通信通道可以在相同或不同的前置机上形成双重备份，系统可以根据负载、通信状况等，自动的调整和切换通信通道。Facing the technical development of the dispatching data network, this system makes full use of the advantages of the dispatching data network, and adopts multi-channel, multi-front, front-end load balancing, and any combination of channels in terms of communication reliability between the main station system and the sub-station system Backup and other technologies. That is, multiple front-end processors are configured, and the communication channel of any substation can be double-backed up on the same or different front-end processors. The system can automatically adjust and switch communication channels according to load and communication conditions.
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| CN102377246A (en)* | 2011-12-01 | 2012-03-14 | 国电南京自动化股份有限公司 | Graphic instantiation method based on IEC61850 fault analysis system |
| CN104063807A (en)* | 2014-06-26 | 2014-09-24 | 国家电网公司 | Regional grid failure assistant decision method |
| CN106899001A (en)* | 2017-02-15 | 2017-06-27 | 许继集团有限公司 | A kind of intelligent substation secondary N in-one devices |
| CN107453482A (en)* | 2017-08-22 | 2017-12-08 | 益和电气集团股份有限公司 | One seed stations communication manager and power network dispatching system |
| CN110086211A (en)* | 2019-05-06 | 2019-08-02 | 国家电网公司东北分部 | High frequency centralized control method suitable for extensive AC-DC hybrid power grid |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377246A (en)* | 2011-12-01 | 2012-03-14 | 国电南京自动化股份有限公司 | Graphic instantiation method based on IEC61850 fault analysis system |
| CN102377246B (en)* | 2011-12-01 | 2014-05-07 | 国电南京自动化股份有限公司 | Graphic instantiation method based on IEC61850 fault analysis system |
| CN104063807A (en)* | 2014-06-26 | 2014-09-24 | 国家电网公司 | Regional grid failure assistant decision method |
| CN106899001A (en)* | 2017-02-15 | 2017-06-27 | 许继集团有限公司 | A kind of intelligent substation secondary N in-one devices |
| CN107453482A (en)* | 2017-08-22 | 2017-12-08 | 益和电气集团股份有限公司 | One seed stations communication manager and power network dispatching system |
| CN110086211A (en)* | 2019-05-06 | 2019-08-02 | 国家电网公司东北分部 | High frequency centralized control method suitable for extensive AC-DC hybrid power grid |
| CN110086211B (en)* | 2019-05-06 | 2021-04-30 | 国家电网公司东北分部 | High-frequency centralized control method suitable for large-scale alternating current-direct current hybrid power grid |
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