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电气化铁路不对称负荷产生的高次谐波、负序对运行中导线的冲击电动力,造成牵引变电所缺相故障屡有发生,分析了缺相运行时现有保护拒动的原因,结合故障实例找出了具体的处理对策,简述了应用情况。
The high harmonics caused by the asymmetrical load of electrified railway and the impulsive electromotive force of the negative sequence to the conducting wire in operation lead to the lack of phase failure of the traction substation frequently. The reasons for the existing protection refusal during the phase loss operation are analyzed. Failure examples to identify the specific treatment measures, briefly describes the application.