电力系统自动化2011，Vol.35Issue(7)：48-52,5.
基于故障电压分布的广域后备保护算法
A Wide Area Back-up Protection Algorithm Based on Fault Voltage Distribution
摘要
Abstract
In order to solve the setting and coordination problems of the traditional back-up protection and the misoperation during flow transfer due to overload, a novel wide area back-up protection algorithm based on the distribution of fault voltage is proposed. This algorithm uses the value of fault voltage and fault current measured from one side of the line to estimate the fault voltage of the other side. The ratio of the estimated to the measured value constitutes the protection criterion. Unaffected by transition resistance, this algorithm will not misoperate when flow transfer due to overload occurs. The principle of this algorithm is simple, requires very little information, has no rigorous requirement on the synchronization of information from different sources and is convenient to implement. Simulation results show that the algorithm can successfully identify the faulted line whatever the type of faults.关键词
广域后备保护/故障电压分布/故障点识别Key words
wide area back-up protection/distribution of fault voltage/fault location引用本文复制引用
汪华,张哲,尹项根,何志勤,江荣舟,陈国炎..基于故障电压分布的广域后备保护算法[J].电力系统自动化,2011,35(7):48-52,5.基金项目
国家自然科学基金资助项目(50837002,50877031). （50837002,50877031）
