Abstract：In power transformer, DC magnetic bias cannot be ignored. According to the situation of DC magnetic bias in Chongqing electric power network, the reason of DC magnetic bias is studied. Analysis of the rectifier transformer in working process due to commutation valve trigger the unbalance, AC side of the second harmonic voltage of positive sequence and produces a DC and flow into the power grid, to power in the substation caused by the influence of DC biasing. Using the corresponding measures, the DC magnetic bias of the transformer is measured and the effect of the rectifier transformer on the DC magnetic bias is demonstrated.
刘明军, 程臣, 赵克江, 张作鹏, 陈正宇. 交流电网整流变引起的直流偏磁机理与实验分析[J]. 电气技术, 2016, 17(6): 93-96.
Liu Mingjun, Cheng Chen, Zhao Kejiang, Zhang Zuopeng, Cheng Zhengyu. The Mechansim and Experiment Analysis of DC Magnetic Bias Caused by Rectifier Transformer of AC Grid. Electrical Engineering, 2016, 17(6): 93-96.
2016, Vol. 17 
