基于相对增益和改进粒子群算法的PSS与直流调制协调策略

发布时间：2018-01-26 03:22

本文关键词： 协调控制广域测量系统相对增益混沌和差分进化的混合粒子群反馈信号　出处：《中国电机工程学报》2014年34期 　论文类型：期刊论文

【摘要】：现有电力系统稳定器(power system stabilizer,PSS)和直流调制多使用本地信号作为控制器反馈输入信号,控制器间的交互作用可能降低甚至破坏系统稳定性。提出了一种基于广域测量信号的PSS与直流调制协调策略,首先通过留数法选择对于振荡模态可观性较强的广域信号作为阻尼控制器备选反馈信号;其次通过相对增益方法选择使PSS和直流调制交互影响最小的备选信号作为最佳反馈信号;而后设计分散控制器,并运用基于混沌和差分进化的混合粒子群优化算法对PSS和直流调制控制器参数进行协调优化。最后,通过EPRI 36节点系统仿真验证了协调策略的正确性和有效性。
[Abstract]:Existing power system stabilizers power system stabilizer PSS) and DC modulation often use local signals as controller feedback input signals. The interaction between controllers may reduce or even destroy the stability of the system. A coordinated strategy of PSS and DC modulation based on wide-area measurement signal is proposed. Firstly, the wideband signal with strong observability of oscillation mode is selected as the alternative feedback signal of damping controller by residue method. Secondly, the alternative signal which minimizes the interaction between PSS and DC modulation is selected as the best feedback signal by the relative gain method. Then the decentralized controller is designed and the parameters of PSS and DC modulation controller are optimized by hybrid particle swarm optimization algorithm based on chaos and differential evolution. Finally. The correctness and effectiveness of the coordination strategy are verified by EPRI 36 bus system simulation.
【作者单位】：四川大学电气信息学院;
【基金】：国家自然科学基金重点项目(51037003) 国家电网公司科技重大专项(SGCC-MPL G027-2012)~~
【分类号】：TM712
【正文快照】： 和直流调制交互影响最小的备选信号作为最佳反馈信号;而后设计分散控制器,并运用基于混沌和差分进化的混合粒子群优化算法对PSS和直流调制控制器参数进行协调优化。最后,通过EPRI 36节点系统仿真验证了协调策略的正确性和有效性。0引言近年来,我国电力系统发展迅速,电网规模不

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