可再生能源2025，Vol.43Issue(12)：1647-1654,8.
海上风电场集电线路两相短路故障的在线故障测距方法
Online fault-location method for two-phase short-circuit faults in offshore wind farm collector lines
摘要
Abstract
Due to the current-magnitude limit,controlled phase angle,and absence of zero-sequence current of converters,fault-location errors occur when two-phase short-circuit faults happen in offshore wind-farm collector cables.This paper analyzes the composite-sequence network under such faults and exploits the capability of both the VSC-HVDC link and the wind-turbine converters to suppress negative-sequence current during the fault.By using the locally measured negative-sequence voltage,the positive-sequence voltage at the fault point is computed on-line,a fault-distance equation is established,and the fault position is solved in real time.The proposed on-line algorithm remains accurate for large and non-resistive fault resistances and is immune to the reactive-power support strategy of the offshore wind farm,thus enhancing the safe and stable operation of offshore wind power systems.关键词
换流器/海上风电场/两相短路/故障测距/过渡电阻Key words
converter/offshore wind farm/two-phase short circuit/fault location/transition resistance分类
能源科技引用本文复制引用
尹飞,沈志中,余从极,成月良,董雪,张柯柯,晁晨栩,张峰..海上风电场集电线路两相短路故障的在线故障测距方法[J].可再生能源,2025,43(12):1647-1654,8.基金项目
国家自然科学基金项目(52277112). （52277112）
