基于改进BBO算法的PSS参数优化的鲁棒性研究  

Research on Robustness of PSS Parameter Optimization Using Improved Biogeography-based Optimization Algorithm

作　　者：潘志豪 王德林[1] 孙博[1] 张俊武 康积涛[1] 袁优 PAN Zhihao;WANG Delin;SUN Bo;ZHANG Junwu;KANG Jitao;YUAN You(School of Electrical Engineering,SouthwestJiaotong University,Chengdu,Sichuan 610031,China;State Grid Zhejiang Province Electric Power Company Shaoxing Power Supply Company,Shaoxing,Zhejiang 312000,China)

机构地区：[1]西南交通大学电气工程学院,四川成都610031 [2]国网浙江省电力公司绍兴供电公司,浙江绍兴312000

出　　处：《广东电力》2018年第3期42-48,共7页Guangdong Electric Power

基　　金：国家自然科学基金项目(51477143)

摘　　要：电力系统稳定器(power system stabilizer,PSS)参数配置不合理将会导致低频振荡的抑制效果不佳,严重情况下还会破坏电网运行的稳定性,为此,建立发电机、励磁系统和PSS的线性化方程,构建多种运行方式、多机电振荡模式下的目标函数,对PSS参数进行优化;将差分进化(differential evolution,DE)算法与生物地理学优化(biogeography based optimization,BBO)算法相结合,针对迁移算子和变异部分进行改进;在PSASP中搭建云南电网的滇西北部分电网,通过仿真验证所提PSS优化目标函数和改进的BBO-DE优化算法的有效性,使得PSS的优化参数具有良好的适应性,有效提高系统的阻尼比,能够适应云南电网的多种运行方式。Unreasonable configuration of PSS parameters may cause poor suppression effect of low frequency oscillation,or even damage stability of the power grid.Therefore,this paper firstly builds linear equations of the generator,the excitation system and PSS as well as related objective functions under multiple operating modes and multi-electromechanical oscillation modes so as to optimize corresponding PSS parameters.Secondly,it combines the difference algorithm(DE)and the biogeography-based optimization algorithm(BBO)for improving migration operators and variation parts.Finally,in PSASP it establishes part of northwest Yunnan power grid by simulation and verifies effectiveness of the proposed optimized objective functions and improved BBO-DE algorithm.Simulation indicates the optimized PSS parameters have good adaptabilities which can effectively improve damping ratios of the system and adapt to multiple operating modes of Yunnan power grid.

关 键 词：多种运行方式 电力系统稳定器(PSS) 差分进化算法(DE) 生物地理学算法(BBO) 阻尼比 

分 类 号：TM712[电气工程—电力系统及自动化]