27.5kV电力供电电源的几点应用经验

Some applications of 27.5k V power supply power supply

本文对迁曹线曹妃甸南站工频交直交电源B相输出升压变压器过热原因进行了分析,找出了因B相逆变回路滤波电容器老化,造成输出电压波形严重畸变,引起输出B相升压变压器铁芯长时间发热、造成线圈老化的原因。并根据运行经验提出了在电气化区段选用交直交电源时应首选高频模块化交直交电源的建议。

In this paper,the reason of power frequency AC-DC-AC output causing transformer overheating in the Caofeidian south station Qian Cao railway is analyzed,the reason of output B step-up transformer iron core heat for a long time and wire aging causing by the aging of B phase inversion loop filter capacitor, a serious distortion of output voltage waveform is found. According to the operation experience of asking in the electrical section use AC-DC-AC power should be the first choice of high frequency modularized AC-DC-AC power advice.