含串补电容电气化铁路馈线故障测距算法
Algorithm for FaultLocation ofElectric Traction Network with Series Compensators
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摘要: 含串联补偿电容的电气化铁路牵引电网线路的电抗-距离关系不是单调的,按常规的电抗查表测距法, 每个故障点会对应2个或多个定位点.通过对含串补电容馈线故障模型特性的分析,提出了一个新的判别方法. 对不同的故障角和过渡电阻的ATP仿真以及MATLAB程序分析结果验证,该方法能够判断出故障与区间串补 电容的相对位置.给出了含2个串补电容的电气化铁路馈线故障分段查表测距算法.Abstract: The relationship between impedance and distance of power traction network with series compensators is notmonotone in the electric traction network of electrified railways. The conventional method of fault location fails because therewillbe two ormore faultpoints corresponding to an actual fault. A newmethodwasproposed based on analysison the faultmodelofelectric traction networkwith series compensators. ATP (alternative transients program) simulation programmed withMATLAB on different faultphase angles and transient resistances indicates that the method is able to identify the position relative to the series compensators. The algorithm was presented to help users to apply the proposedmethod by looking up a table containing the criteria.
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