220kV变电站无功补偿容量的研究

Study on Reactive Compensation of 220 kV Substation

电力系统的电压是通过发电机、变压器分接头和无功补偿装置等设备控制无功功率来调节的,如何在满足电压要求的条件下,使得配置的无功补偿容量较为经济,是一个值得研究的课题。针对不同的负荷功率因数情况,以辐射网络为例,研究了在220kV变电站选择无激磁调压变压器时,站内为满足电压要求,需要配置的较为经济的无功补偿容量。此外,对电缆进线的220kV变电站的无功补偿配置进行了初步研究。

The Voltage of the power system is regulated by the control of the reactive power of the generators and the reactive power compensation equipments and also the tap change of the transformers. It is valuable to study the choice of the economic capacity of reactive equipments on the condition that the voltage demand can be met. According to the different values of power factors of the loads with the radial type of network as example the determination of the economic reactive compensation capacity to be configured to meet the voltage requirements of the substation has been studied, assuming that transformers with the tap kept unchanged during load variation have been selected for the 220 kV substation. In addition preliminary study on the reactive compensation configuration in a 220 kV substation with the power supplied by cable has been conducted.