摘要
为寻求配电网继电保护装置能快速切除故障,针对馈线的多个线路节点,提出一种适用于单端辐射状电网的故障测距方法。首先利用母线出口处布置的测量设备记录故障发生后的电压、电流信息,在辨别故障发生类型的基础上,计算测量点到故障点之间的总阻抗;然后利用提出的搜寻方法,初步得出可能性较大的若干条故障线路;同时给出一种缩小故障检索范围的方案。通过各个监测点反映的故障状态情况,最终确定故障线路和故障距离。通过建立10 kV单端辐射状电网仿真实验,验证了该方法的准确性。
Hopes to eliminate the faults fast by protection relay device in the distribution network, proposes fault locating method applicable to single-ended radial grid on account of the multi-level feeders of the distribution network. First, takes advantages of the measure devices to record voltage and current information at the outlet of the bus after a failure occurs, based on identifying the failure type, calculating the total impedance of measurement point to the fault point; then introduces the new search method, preliminary gets the results of the possible fault lines; meantime, presents a program to narrow the fault scope, through the fault conditions that various monitoring points reflect, further excludes the non-fault lines. Finally, the fault line and the final distance are determined. Establishes a 10 kV single-ended radial grid to verify the accuracy of the method.
出处
《煤矿机电》
2014年第5期81-84,88,共5页
Colliery Mechanical & Electrical Technology
关键词
配电网
总阻抗
故障可疑点
优化配置信号监测系统
故障测距
distribution network
total impedance
fault suspicious points
optimizing allocation monitoringpoints
fault locating
