摘要
基于故障点电压幅值相等的双端故障定位方法,由于两端采样数据不同步会存在伪根判别问题。分析两端数据不同步时伪根产生的原因,并利用故障分量电压分布规律,提出基于故障分量不存在伪根判别问题的简单迭代定位方法,证明了该方法收敛性和惟一性。该方法采用线路分布参数模型,不受线路分布电容影响,计算简单。通过仿真验证该方案收敛速度快,不受过渡电阻、故障初始角、两端采样数据不同步等因素的影响,测距精度高。
There will be false root in the fault location using two-terminal data if the unsynchronized date is considered. In this paper, the generation of the false root is represented. The algorithm of fault location, having no use for distinguishing the false root and using unsynchronized data of two-terminal, is introduced. It utilizes searching and iteration methods to locate the fault point according the regularity of fault component voltage along the transmission line while its astringency and the exclusivity are proved. The algorithm adopted distributed parameters which can eliminate the influence of the line capacitance is realized easily. The result of simulation shows that the algorithm has a high precision and a low sensitivity to the fault resistance, inception angle and unsynchronized data of two-terminal, while the method has a high speed of astringency.
出处
《江苏电机工程》
2010年第4期16-19,共4页
Jiangsu Electrical Engineering
关键词
输电线路
故障定位
收敛性
双端数据不同步
transmission line
fault location
astringency
unsynchronized data of two-terminal
