基于广域信息的继电保护和稳定控制一体化研究
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摘要
目前电力系统中运行的继电保护和稳定控制装置是两套相互独立的装置,两者之间没有信息交互和共享,动作时缺乏协调和配合。一些大电网事故表明,在发生连锁故障时,继电保护和稳定控制的失配将导致严重的系统事故。因此,研究如何实现继电保护和稳定控制之间的协调配合对保证系统的安全、防止大停电事故的产生有着极其重要的意义。
本文针对以上问题,进行了基于广域信息的继电保护和稳定控制一体化系统的研究,主要内容如下:
阐述了基于广域信息的继电保护和稳定控制一体化研究的必要性和可行性,然后构建了继电保护和稳定控制一体化系统的结构,对其具有的功能进行了介绍,并且提出了实现一体化系统要解决的关键问题。
介绍了基于广域信息的继电保护和稳定控制一体化系统的信息来源——基于IEC 61970的综合信息平台。在原有广域信息来源EMS/SCADA,WAMS和故障信息系统基础上,结合IEC 61970标准将原有的三个广域信息系统集合到综合信息平台,实现了信息的共享和集成。综合信息平台向决策层提供了完整的电网信息数据,为决策层实现继电保护和稳定控制一体化做出了强有力的数据平台支持。采用Multi-Agent分层结构构建继电保护和稳定控制一体化控制系统。介绍了集中式、分布式和Multi-Agent三种结构的优缺点,并分别介绍了变电站Agent的局部控制和调度中心Agent的全局控制的实现,然后基于Multi-Agent分层式结构构建了继电保护和稳定控制一体化系统。
实现了继电保护和稳定控制一体化控制决策中定值单的下发。开发了基于调度数据网的定值单管理系统,能够对定值单进行流程化管理,将要下发的定值生成XML文件,并对其进行数字签名,经过网络安全隔离装置从调度数据网安全区Ⅲ发送到安全区Ⅱ,实现了跨区传输,使调度中心生成的定值单能够直接下发到目的变电站,并且采用不可逆加密、数字签名等一系列措施加强了系统的安全性。
At present,power system relay protections and stability control devices are independent of each other,there is no information exchanging,coordination and cooperation between them. Some large power grids event about cascading failures show that,the mismatch control between relay protection and stability will lead to serious accidents. Therefore, It is critical important to research on how to coordinate the stability control and the relay protection to ensure the security and prevent the emergence in power systems.
In this paper,the problem of the integration in protective relay and stability control in wide area information system will be approached. The main contents are as follows: Firstly,the integration in protective relay and stability control in wide area information system was summarized. Then,the structure of the integration in protective relay and stability control in wide area information system was built and their functions have been introduced. In addition,some key issues about this system to achieve the integration was solved.
Secondly,information of the integration in protective relay and stability control in wide area information system was based on IEC 61970 information platform. On the foundation of EMS / SCADA in wide area information, WAMS and fault information system based on the IEC 61970 standard combined three existing wide-area collection system of information to a new integrated information platform to achieve the information communion and integration. Integrated information platform provide a complete data for decision-making levels to make a support of the integration in protective relay and stability control in wide area information system.
Thirdly, used Multi-Agent hierarchical structure to achieve the integration of relay protection and control system and stability control. The centralized, distributed and Multi-Agent structures of the advantages and disadvantages were introduced. Then stratified Multi-Agent architecture to achieve the integration of protective relaying and stability control systems,and introduced the Local Agent control in power station control and center Agent control in dispatching center to achieve optimal control of the whole system.
Last,the dispatching data network based on the value of a single management system was developed. It was able to set the value to the process in a single management and create the generation of XML documents and their digital signatures after deriving the value from the database,achieved the cross-transmission of the separation of network security devices from the scheduling data network security zone III to the security zone II. The dispatching control center generate a single value can be issued directly to the destination power station, and the use of a series of measures such as non-reversible encryption,digital signature to strengthen the security of the system.
本文针对以上问题,进行了基于广域信息的继电保护和稳定控制一体化系统的研究,主要内容如下:
阐述了基于广域信息的继电保护和稳定控制一体化研究的必要性和可行性,然后构建了继电保护和稳定控制一体化系统的结构,对其具有的功能进行了介绍,并且提出了实现一体化系统要解决的关键问题。
介绍了基于广域信息的继电保护和稳定控制一体化系统的信息来源——基于IEC 61970的综合信息平台。在原有广域信息来源EMS/SCADA,WAMS和故障信息系统基础上,结合IEC 61970标准将原有的三个广域信息系统集合到综合信息平台,实现了信息的共享和集成。综合信息平台向决策层提供了完整的电网信息数据,为决策层实现继电保护和稳定控制一体化做出了强有力的数据平台支持。采用Multi-Agent分层结构构建继电保护和稳定控制一体化控制系统。介绍了集中式、分布式和Multi-Agent三种结构的优缺点,并分别介绍了变电站Agent的局部控制和调度中心Agent的全局控制的实现,然后基于Multi-Agent分层式结构构建了继电保护和稳定控制一体化系统。
实现了继电保护和稳定控制一体化控制决策中定值单的下发。开发了基于调度数据网的定值单管理系统,能够对定值单进行流程化管理,将要下发的定值生成XML文件,并对其进行数字签名,经过网络安全隔离装置从调度数据网安全区Ⅲ发送到安全区Ⅱ,实现了跨区传输,使调度中心生成的定值单能够直接下发到目的变电站,并且采用不可逆加密、数字签名等一系列措施加强了系统的安全性。
At present,power system relay protections and stability control devices are independent of each other,there is no information exchanging,coordination and cooperation between them. Some large power grids event about cascading failures show that,the mismatch control between relay protection and stability will lead to serious accidents. Therefore, It is critical important to research on how to coordinate the stability control and the relay protection to ensure the security and prevent the emergence in power systems.
In this paper,the problem of the integration in protective relay and stability control in wide area information system will be approached. The main contents are as follows: Firstly,the integration in protective relay and stability control in wide area information system was summarized. Then,the structure of the integration in protective relay and stability control in wide area information system was built and their functions have been introduced. In addition,some key issues about this system to achieve the integration was solved.
Secondly,information of the integration in protective relay and stability control in wide area information system was based on IEC 61970 information platform. On the foundation of EMS / SCADA in wide area information, WAMS and fault information system based on the IEC 61970 standard combined three existing wide-area collection system of information to a new integrated information platform to achieve the information communion and integration. Integrated information platform provide a complete data for decision-making levels to make a support of the integration in protective relay and stability control in wide area information system.
Thirdly, used Multi-Agent hierarchical structure to achieve the integration of relay protection and control system and stability control. The centralized, distributed and Multi-Agent structures of the advantages and disadvantages were introduced. Then stratified Multi-Agent architecture to achieve the integration of protective relaying and stability control systems,and introduced the Local Agent control in power station control and center Agent control in dispatching center to achieve optimal control of the whole system.
Last,the dispatching data network based on the value of a single management system was developed. It was able to set the value to the process in a single management and create the generation of XML documents and their digital signatures after deriving the value from the database,achieved the cross-transmission of the separation of network security devices from the scheduling data network security zone III to the security zone II. The dispatching control center generate a single value can be issued directly to the destination power station, and the use of a series of measures such as non-reversible encryption,digital signature to strengthen the security of the system.
引文
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[8] Massoud Amin . Special issue on energy infrastructure defense systems.Proceedings of the IEEE.2005.5: 855-860.
[9] Hao Li.Rosenwald G W.Juhwan Jung.et al.Strategic power infrastructure defense[C].Proceedings of the IEEE.2005.5:918-933.
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[15]王艳,张艳霞,徐松晓.基于广域信息的防连锁过载跳闸保护.电力系统自动化,2008,30(10):37-41
[16]徐慧明,毕天妹,黄少锋等.基于广域同步测量系统的预防连锁跳闸控制策略.中国电机工程学报,2007,27(19):32-38.
[17]徐慧明,毕天姝,黄少锋等.基于潮流转移因子的广域后备保护方案.电网技术,2006,30(15):65-71.
[18]林霞,高厚磊.新型广域后备保护方案的研究.继电器,2005,33(7):84-88.
[19]童晓阳,王晓茹.基于面向Agent Petri网的广域后备保护建模与分析.电力系统自动化.2007,31(18):43-49.
[20]朱永利,宋少群.基于广域网和多智能体的自适应协调保护系统的研究.中国电机工程学报,2006,26(16):15-20.
[21]丛伟,潘贞存,赵建国等.基于电流差动原理的广域继电保护系统.电网技术,2006,30(5):91-95.
[22]丛伟,潘贞存,赵建国.基于纵联比较原理的广域继电保护算法研究,中国电机工程学报,2006,26(21):8-14.
[23] Birman K P,Chen J,Hopkinson E M,et al .Overcoming communications challenges in software for monitoring and controlling , power systems[C].Proceedings of the IEEE,2005,5:1028-1041.
[24] Tan J C,Crossley P A,Mclaren P G et al.Application of a wide area backup protection expert system to prevent cascading outages[J].IEEE Trans on Power Delivery,2002,17(2):375-380.
[25]彭波,周良松,夏成军,等.EMS数据服务器和WEB发布系统.电力自动化设备,2003,23(3):5-7.
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