广域保护系统功能与可行结构分析  

Analysis on functionality and feasible structure of wide area protection system

作　　者：徐天奇[1] 尹项根[1] 游大海[1] 王阳光[1] 李程[2] 

机构地区：[1]华中科技大学电力安全与高效湖北省重点实验室,武汉湖北430074 [2]河北保定天威保变电气股份有限公司,保定河北071056

出　　处：《电力系统保护与控制》2009年第3期93-97,共5页Power System Protection and Control

基　　金：国家科技部863项目(2005AA001200)

摘　　要：广域保护系统通过收集和分析电力系统广域信息、评估系统的状态,可以实施针对多种系统扰动的多重系统保护,比传统特殊保护系统更加灵敏有效。但是广域保护概念的滥用阻碍了该技术的推广和发展,本文探讨了广域保护的定义,将其限定于针对系统广域扰动的保护和控制而把对电力设备的保护排除在外,以突出广域保护在系统保护领域的优势。文中对比了分散式和现有的集中式的广域保护系统结构,认为前者可以获得较高的可靠性但是不能做到全局最优控制,后者利于实现全局最优控制,但是对控制中心设备性能要求很高。因此,本文提出一种改进型的集中式结构--三层式广域保护系统,并讨论了在广域测量系统基础上实现三层式广域保护系统的可行性。The Wide Area Protection System （WAPS） can estimate the state of the power system through collecting and analyzing wide area information, so it can implement multiple system protection schemes against various system disturbances. Compared with traditional special protection system, WAPS is more sensitive and effective. But the abuse of Wide Area Protection （WAP） concept has hindered the development of WAP technology. In this paper, WAP is defined as the protection and control against system wide area disturbance, from which the protections of electrical equipment are excluded. The definition highlights the advantages of WAP in system protection. The distributed structure and existing centralized structure of WAPS is compared. With the former, more reliability can be gained but the global optimal control can not be achieved. The later is helpful to realize the global optimal control, but it requires extreme performance of devices in the control center. So an improved centralized structure, namely three-layer WAPS is proposed. The feasibility of implementation of three-layer WAPS based on wide area measurement system is analyzed also.

关 键 词：广域保护 集中式 分散式 三层式广域保护系统 

分 类 号：TM771[电气工程—电力系统及自动化]