暂态电压稳定薄弱区的厂站稳态无功协调方法
Science Technology and Engineering(2023)
Abstract
考虑协调发电机和变电站电容器稳态无功出力占比对系统暂态电压稳定性的影响,以及无功优化和电压稳定的区域调控特点,研究了基于厂站稳态无功协调提高系统暂态电压稳定裕度的预防控制方案决策方法.该方法在利用近邻传播(affinity propagation,AP)聚类算法和综合暂态电压稳定裕度确定稳定裕度薄弱区域的基础上,基于发电机无功调节对薄弱母线电压作用的加权平均灵敏度进行灵敏调节发电机选择.接着以薄弱区并联无功补偿和灵敏发电机无功出力作为控制变量,建立兼顾暂态电压稳定裕度和母线电压额定值偏移的厂站无功协调多目标优化模型,并结合暂态稳定计算,利用多目标优化算法(multi-objective evolutionary algorithm based on decomposition,MOEA/D)和逼近理想解排序法(technique for order pref-erence by similarity to an ideal solution,TOPSIS)求解系统对严重预想故障的多目标稳态无功协调方案.江西电网实际算例的仿真研究验证了该决策方法的有效性.
MoreKey words
transient voltage stability,multi-objective reactive power optimization,comprehensive transient voltage stability mar-gin,comprehensive reactive power-voltage regulation sensitivity,TOPSIS
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