配电联动故障识别技术研究及应用

Research and application of fault linkage identification technology for power distribution

配电网直接面向终端用户,是关乎国计民生的重要基础设施,配电架空线路常发生单相接地故障。研究分析了现有故障指示器的不足,提出了配电联动故障识别技术方案。通过对FTU和故障指示器进行改造并挂网试运行,验证了该方案可实现单相接地故障的快速准确判别。

Distribution network supplying electric energy to end users is an important infrastructure related to the national economy and the people’s livelihood. Single-phase grounding faults often occur in overhead distribution lines. The shortcomings of the existing fault indicators are analyzed and the solution of fault linkage identification is put forward. According to technical transformation and experimentally running of FTU and fault indicator, it is verified that the solution can identify single-phase grounding fault rapidly and accurately.