电工技术学报2016，Vol.31Issue(23)：77-85,9.
基于参数辨识的消弧线圈接地电网单相接地故障测距方法
A Single-Phase-to-Ground Fault Locating Algorithm for Arc-Suppression-Coil Earthed Power Distribution Systems Based on Parameter Estimation
摘要
Abstract
To deal with the fault locating problem against single-phase-toground fault in arc-suppression-coil earthed power distribution systems,a fault locating algorithm is presented for single-phase-to-ground fault in arc-suppression-coil earthed power distribution systems based on parameter estimation principle.By regarding the full-wave zero-sequence equivalent circuit as the estimation model and treating the fault distance,fault resistance and zero-sequence capacitance as the unknown parameters,the objective function of parameter estimation can be established according to the fault voltages and currents.The least-square estimation method is used to obtain the optimal parameters.So the distance between the fault location and the bus side can be obtained.In addition,considering branches likely existed in the distribution lines,deductive logics are constructed as the complement for the basic fault location method to improve the applicability of the method.The presented algorithm can be integrated in the fault selection device to implement the dual function without extra equipment.Simulations and experiments are conducted to verify the feasibility and accuracy of the proposed method.关键词
消弧线圈接地电网/单相接地故障/故障测距/零序全波等效电路/最小二乘参数辨识Key words
Arc-suppression-coil earthed power distribution systems/singlephase-to-ground fault/fault location/zero-sequence full waveform equivalent circuit/least-square parameter estimation分类
信息技术与安全科学引用本文复制引用
贾清泉,王振宇,王宁,董海艳,艾丽..基于参数辨识的消弧线圈接地电网单相接地故障测距方法[J].电工技术学报,2016,31(23):77-85,9.基金项目
国家自然科学基金项目资助(51477147). （51477147）
