引入负荷预测的变电站电压无功优化控制

本文提出了一种新的电压无功综合控制策略即在传统"九区图"控制策略的基础上再引入短期负荷预测作为辅助控制策略,算例仿真结果表明,该综合控制策略在保证电压合格,无功基本平衡的基础上,能减少变压器的调节次数,避免了投切振荡现象,延长了开关使用寿命。

A Research on Voltage and Reactive Power Control Strategy for Sub-station

The thesis presents a kind of voltage and reactive power Integrated Control Strategy,which is based on traditional ＂Nine Area Charts＂ Control Strategy and introduces short-term load forecasting for sub- control. According to the Simulation resuhs,this kind of Integrated Control Strategy, on the basis of ensuring good voltage level and maintaining a basic reactive power balance,can not only reduce the number of the adjustment of the transformer,but al- so avoid the throw-cut vibration phenomena , thereby prolonging the service life of the switch.