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针对京沪高铁无锡东10kV配电所电压互感器频繁烧损的现象,分析得出中性点不接地电力系统,电压互感器铁芯深度饱和激发铁磁谐振,从而导致电压互感器烧损的结论;同时对消除和防止铁磁谐振的各种措施进行探讨。
In view of the phenomenon of frequent burning of voltage transformers in Wuxi East 10kV distribution substation of Beijing-Shanghai high-speed rail, the neutral point ungrounded power system is analyzed. The deep saturation of voltage transformer core stimulates ferroresonance, resulting in the burning of voltage transformer Conclusion; At the same time to eliminate and prevent the ferromagnetic resonance of various measures to explore.