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电网技术  2011 

基于2阶段家族保护遗传算法的电压稳定霍普夫分岔控制

, PP. 53-58

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Abstract:

系统的负荷裕度由亚临界霍普夫分岔值表征,如何延迟甚至消除霍普夫分岔,提高负荷裕度,对于防止系统电压失稳具有重要意义。本文根据一种新的霍普夫分岔指标建立了电压稳定霍普夫分岔控制的最优化模型,该模型考虑了更为切合实际的约束条件,包括系统阻尼限制、PV节点无功出力限制、励磁电压限制以及各节点电压限制等。为了有效求解该优化模型,本文提出了一种两阶段家族保护遗传算法。该算法利用混沌变量的遍历性生成初始种群,第一阶段完成家族内部的选择,使得每个家族成员都是优良个体;第二阶段实现家族间的选择,这是一种“优—优”选择,使算法能以更快的速度收敛到全局最优解。通过对测试函数和WSCC-9节点系统的仿真表明该模型和算法的有效性和可行性。

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