摘要
提出了一种利用超高压电缆两端的故障录波数据进行故障测距的新方法,该方法比较充分地考虑了超高压电缆线路分布电容大的特点,利用递推法在算法上模拟实际线路的电压、电流分布,以提高定位精度。该方法不要求双端数据同步,不受线路两端系统阻抗和过渡电阻的影响,不存在伪根判别问题,易于实现。仿真结果显示这种算法具有较高的测距精度和实用价值。
A new method for accurate fault location is introduced, which uses fault record data from both terminals of the EHV cable line. Based on the characteristics of big distributed capacity at EHV cable line, the voltage and current distributions of EHV cable line are simulated with iterative calculation to improve the precision. Simulation results show that the method does not require data to be synchronized at both terminals of the line, or affect by system resistance or transient resistance and has no false-root identification problem,so it is easily to be realized. The simulation results show that this method has a higher precison and practical value.
出处
《继电器》
CSCD
北大核心
2005年第10期21-24,40,共5页
Relay
关键词
超高压电缆线路
故障测距
双端不同步
EHV cable line
fault location
non-synchronization of two terminals
