树状配电网相间短路的双频法故障诊断
Double-Frequency Excited Method to Locate Line-to-Line Fault on Power Distribution Network with Tree Structure
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摘要: 基于传输线理论,提出树状配电网相间短路的双频法故障诊断.采用线路始端诊信 逐段传递、故障点逐段搜索和双频诊断的方法,实现配电线路的故障分支识别、故障点定位和 过渡电阻定值.实际线路的模拟故障测距表明,方法有效.Abstract: On the basis of transmission line theory, double-frequency excited method to locate line-to-line fault on power distribution network with tree structure is' presented. The fault branch identificaiton, the fault location and the fault value are completed by means of the detection signal transmitted from the start end to the terminals ,searching fault, sectionally, and bi-frequency excited diagnosis. The tests of fault location on actual lines demonstrate that the method is effective.
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Key words:
- power distuibution network /
- fault branch identification /
- fault location
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