基于改进微分方程法的串补线路故障定位  

Improved Differential Method Based on Series Compensated Line Fault Location

作　　者：张墨[1] 唐文秀[1] 赵志江[1] 

机构地区：[1]东北林业大学机电工程学院,黑龙江哈尔滨150040

出　　处：《机电产品开发与创新》2012年第1期147-149,共3页Development & Innovation of Machinery & Electrical Products

摘　　要：提出了一种基于改进的微分方程法的串补线路故障定位算法。首先,利用线路两端电压相位得到故障发生前的过零时刻,以该时刻作为同步数据的参考时间。再通过微分方程法所确立的数学模型确定故障即假设故障点发生在串补电容的两侧,通过计算得到两个故障相关定位解,由暂态过程中电容两侧发生故障时的电压波形不相同这一理论,通过线路两端获取的数据分别计算出的故障点电压应该相等,确定真根排除伪根,从而判定出发生故障的位置。仿真研究表明,该算法应用在串补输电线路的故障检测中是可行的。Proposed a differential method based on improved fault location algorithm for series compensated lines. First, the use of both ends of the hne voltage phase to be zero before the failure time to the moment as the time reference to synchronize data. Through the differential equations method of mathematical models to determine fault in assuming that the point of failure on both sides of series compensation capacitors, by calculating two fault-related position solution, Capacitance transient process from the failure of both sides of the voltage waveform is not the same theory, by the principle： the line at both ends of the data were calculated to obtain the fault point voltage should be equal, to determine the true root of the root nile out false, and thus determine the occurrence of fault location. Simulation studies show that the algorithm in the series compensation transmission line fault detection application is feasible.

关 键 词：故障检测 串联补偿电路 双端测距 微分方程 不同步数据 

分 类 号：TM711[电气工程—电力系统及自动化]