有谐电网无功优化的灵敏度分析法

The Sensitivity Method for Reactive Power Opitimization in Power System with Multi-harmonic Sources

基于谐波电压与补偿电容容量的灵敏度分析 ,用牛顿法导出了计算并联电容器容量最优配置的线性化优化数学模型 ,使电力系统中装设的作为无功补偿的并联电容器组 ,在多谐波源作用下仍发挥对基波无功的补偿作用 ,避免因谐波放大或发生谐振出现过电压而破坏系统的安全运行。用IEEE 2 2节点系统进行了仿真计算 。

Using NewTon Method, a linear mathematical model which is applied in calculating the optimal size of shunt capacitors is presented in this paper based on sensitivity analysis between harmonic voltages and compensation capacitances. It can make the shunt capacitors play the role of optimal compensation to reactive power of fundmental frequence, and avoid over voltages following harmonics amplified and resonance . the result tested by IEEE 22 system modified demonstrates that the proposed method is satisfactory and has practical value.