500 kV变压器66 kV无功补偿侧三相不平衡分析

Research on Three-Phase Unbalanced for 66 kV Reactive Power Compensation of 500 kV Transformer

在三相电力系统中,三相负荷不平衡、系统三相参数不对称等都会引起电力系统三相不平衡。针对变电站三相参数不平衡现象,阐述了三相不平衡的基本概念,分析了500 kV变压器66 kV无功补偿侧三相不平衡产生的原因,并选取变电站,根据其实际配置进行了模拟仿真计算。

In the three-phase power system, the three-phase load imbalance and three-phase parameter asymmetry of the system all may cause the power system three-phase imbalance. In this paper, the basic concept of three-phase imbalance is introduced and the causes of three-phase unbalanced for 66 kV reactive power compensation of the 500 kV transformer are described. Two substations are selected according to their actual configuration and simulation.