低压并联电容器额定电压及安装容量计算

Calculation of Rated Voltage and Installation Capacity of Low-voltage Shunt Capacitor

文章通过计算低压并联电容器补偿装置投入后母线电压的升高以及串联电抗器后引起电容器运行电压的升高,选择电容器的额定电压。通过计算说明了串联电抗器、电容器额定电压的选择对并联电容器补偿装置安装容量的影响。在实际工程应用中电容器的额定电压和安装容量的选择还应考虑电网电压波动的影响。

The paper selects the voltage rates of capacitors, through the calculation of voltage rises on a busbar after low-voltage shunt capacitor compensating devices are put into operation, and of running voltage rises on capacitors caused by series reactors. The effect on the installation capacity of shunt capacitor compensating devices is illuminated, which is added by the selection of voltage rates of series reactors and capacitors. In the practical engineering application, the selection of voltage rates and erection capacities of capacitors should also take the effect of network voltage fluctuation into consideration.