负荷开关在特高压南阳站110kV无功补偿设备上的应用

Application of Load Switch in 110 kV Reactive Power Compensation Equipment of UHV Nanyang Substation

在交流特高压电网中,变压器110 kV低压侧的投切无功补偿设备是提高运行电压和降低线路损耗的重要手段。文章结合特高压南阳站扩建工程,将目前应用的110 kV SF6柱式断路器用负荷开关和开断短路电流断路器代替,110 kV负荷开关是在特高压无功补偿装置上的创新技术与开断短路电流断路器互相配合首次应用。

In AC UHV grid,switching of reactive power compensation equipment at 110 kV low voltage side of transformer is a vital means in improving the operating voltage and reducing the loss of line.This paper,combined with the extension project of UHV Nanyang substation,presents the substitution of load switch and circuit breaker（interrupt short circuit current） for currently applied 110 kV SF6 live tank circuit breaker,which is the first time application of 110 kV load switch in coordination with circuit breaker interrupting short circuit current in UHV reactive power compensation device.