贵州东部电网电压季节性升高的原因及抑制措施

THE REASON AND PROTECTION OF VOLTAGES SEASONAL INCREASING OF EAST GUIZHOU POWER NETWORK

本文讨论了主网电压为220kV长距离线路末端负荷点,有电源支持时运行电压季节性升高的原因。并指出110kv网络线路较长时,它将倒送到220kV侧,使主网电压进一步升高。本文提出确定感性无功补偿装置容量的实用原则,选用了空芯电抗器作为补偿装置。并用一台AST—386进行了补偿容量计算和不同安装地点朴偿效果仿真。

The reaons of operating voltage seasonal raising during the low load period of GZ main network was discussed and the effect of the feedbacking of reactive power to system by train-feeder. On the voltage raising was analyzied. The result and analysis of system simulation by using a AST-386 were glveo and the arranging measure of installing a inducti ve reactive compensation device was suggested. The authors also had a discussion on the mistallation location, capacity calculation and type selection of the compensation device.