摘要
对于结构复杂的实际大电网,合理的保护分区是基于集中式结构的广域继电保护工程应用中需要重点解决的关键技术之一。文中基于广域继电保护的有限性概念,论述了广域继电保护系统的分区原则,涵盖变电站中心站的选取、有限广域继电保护范围、边界区域的交互等基本分区原则,满足每条线路在至少一个分区内能实现远后备保护,同时,广域区域内保护分区数目达到最少。将图论技术应用于广域继电保护系统分区的实现,提出基于4级邻接矩阵的搜索方法,原理简单,运算方便,易于实现。IEEE10机39节点系统的仿真结果验证了该保护分区原则与实现方法的可行性。
For an actual large-scale complex grid,rational protection zone division based on wide area relaying engineering applications with centralized structure is one of the key technologies to be tackled. Based on the concept of limitedness of wide area relaying,the principles of protection zone division are discussed,including the selection of the main station,the limited scope of wide area protection,and the basic principles of border region interaction. Each of the lines should be capable of realizing back-up protection in at least one divided area while the number of protected zones in the wide area network should reach the minimum. The graph theory is employed to realize wide area protection system partition and the search method based on 4-level adjacent matrix is proposed,which is simple in principle,convenient to operate,and easy to implement. The simulation results concerning an IEEE 10-machine 39-bus system show the feasibility of this method.
出处
《电力系统自动化》
EI
CSCD
北大核心
2010年第19期48-52,共5页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(50877031
50837002)~~
关键词
广域继电保护
有限性
分区
交互
图论
wide area protection
limitedness
zone division
interaction
graph theory
