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计及广域测量系统时滞影响的灵活交流输电系统阻尼控制器多目标设计

, PP. 227-234

Keywords: 广域测量系统,灵活交流输电系统,辅助阻尼控制器,时滞系统,统一潮流控制器

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Abstract:

广域测量系统为有效抑制互联电网区间低频振荡提供了技术手段,但其量测信号传输时滞可能导致系统阻尼性能降低甚至失稳。本文针对广域测量环境下灵活交流输电系统(FACTS)阻尼控制器设计问题,建立了一种计及信号传输时滞的FACTS阻尼控制模型,并提出了以最大化阻尼比和时滞稳定裕度为目标的辅助阻尼控制器智能优化设计方法,该方法以多目标粒子群优化算法为基础,采用二维Sigma领导策略实现粒子加速搜索并通过混沌变异操作避免算法早熟,得到了基于模糊集的有序Pareto解集,克服了时滞相关镇定现有控制器综合算法仅能获得次优解的不足。两区四机互联电力系统算例表明利用该方法获得的FACTS阻尼控制器既能有效阻尼区间低频振荡,又能容忍一定的信号传输时滞。

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