变压器抽头和无功补偿对系统无功电压的影响

通过对两卷变压器的数学模型进行分析，讨论了两卷变压器抽头调整后，变电站各侧电压及无功功率的变化；无功补偿对变电站各侧电压及无功功率的影响；实际电网生产运行中，无功补偿与变压器抽头的配合调整。并以湖北电网为例给出了算例进行验证，以供电网调度与变电站运行人员参考。

Effect of On-Loaded Tap Changer and Shunted Capacitor Compensation on System Voltage and Reactive Power Balance

Through analyzing the mathematical model of two winding transformer,the effect after on load tap changing on voltage and reactive power balance at each side,effect of shunt capacitor compensation on voltage and reactive power balance in substation the relation between transformer tap adjusting and shunt capacitor switching in practical grid operation were discussed.The Hubei electric grid as an example provides for calculating and veribying,which provides the reference to the power grid dispatcher and substation operator.