基于灰色关联度的紧急无功电压分域方法的研究  

Emergency reactive power voltage control partitioning based on grey correlation

作　　者：李昌超[1] 鲁宝春[1] 钟元振[2] 苏刘军 李兴进 

机构地区：[1]辽宁工业大学电气工程学院,辽宁锦州121001 [2]济宁市技师学院,山东济宁272000

出　　处：《电力系统保护与控制》2014年第8期59-64,共6页Power System Protection and Control

基　　金：辽宁省高等学校优秀科技人才支持计划(LR2011016)

摘　　要：针对电力系统电压紧急状态,提出了基于灰色关联度的紧急电压分域方法。该方法以广义Tellegen定理形成的灵敏度矩阵为基础,将系统快速形成以故障电压节点为中心的无功电压控制域。利用灰色关联度方法对已划分无功电压控制域的边缘控制节点进行取舍处理,搜寻与划分区域相连的控制节点,并计算出每一个控制节点与之相连节点的灰色关联度,按照灰色关联度的取值判定控制节点的取舍,从而克服了阈值选取的不合理性引起的分域不准确性。IEEE-30系统算例表明:该方法形成的紧急无功电压域具有简捷性与快速性,符合电力系统实际。According to the power system voltage state of emergency, a reactive power voltage control partitioning based on grey correlation is proposed. Firstly, the sensitivity matrix is formed by the general Tellegen’s theorem, and then the reactive power voltage control region taking fault voltage node as the center is founded quickly. Secondly, the method of grey correlation is used to decide whether the divided region’s edge control nodes are remained or abandoned. The control nodes connected with the divided region are searched to calculate the grey correlation between every control node and the nodes which connect with it. According to the value of grey correlation to decide whether the control nodes are remained or abandoned. In this way, the reactive power voltage control partitioning is getting more right. IEEE-30 test system shows that the emergency reactive power region formed by the proposed method is simple, fast, and practical.

关 键 词：阈值 广义TELLEGEN定理 灵敏度 灰色关联度 无功电压分域 

分 类 号：TM761[电气工程—电力系统及自动化]