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分析了沪西特高压站投运后,上海机组和特高压站无功补偿设备对沪西中压侧电压无功分布的影响,作出了电压无功分布平行四边形,并考虑沪西主变潮流对该平行四边形的影响。以此为基础,提出了基于改进九区图的沪西站电压无功综合控制策略,减少了设备动作次数,避免了系统运行点在相邻区域内振荡。
The influence of Shanghai Unit and UHV station reactive power compensation equipment on the voltage reactive power distribution of the Huxi middle voltage side is analyzed after the Hushaoti High Voltage Station is put into operation. A parallelogram of reactive power distribution is given. Effect on the parallelogram. Based on this, a comprehensive control strategy of voltage and reactive power based on the improved nine-region graph is proposed, which reduces the frequency of equipment operation and avoids the oscillation of the system operating point in the adjacent area.