摘要
三峡直流输电单极对地运行产生的直流偏磁,影响了500kV武南交流主变压器中安全运行,介绍了用自行研制的直流发生装置和自动控制装置,在变压器中性点注入反向直流电流的方法,并予以实施,实际运行中,直流偏磁从11A减少到剩余的2.2A,变压器的噪声和振动随之大大下降,取得抵消直流偏磁的满意效果。
The unipolar operation of the Three Gorge DC transmission system once caused DC bias, and affected the safe operation of the 500 kV main transformers in Wunan Substation. After the self-developed DC generating and automatic control device installation, and adopting the method of injecting reverse DC at the neutral point of the transformers, a satisfactory result of eliminating DC bias were obtained, with the DC bias reduced from 11 A to 2.2 A, and the noise and vibration of the transformers decreased significantly as well.
出处
《华东电力》
北大核心
2005年第6期44-46,共3页
East China Electric Power
