统一电能质量调节器能量优化控制策略研究  

Energy optimization control strategy for unified power quality conditioner

作　　者：费平平 江全元[1] 严玉婷 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027 [2]深圳供电局有限公司,广东深圳518020

出　　处：《机电工程》2014年第5期629-633,共5页Journal of Mechanical & Electrical Engineering

基　　金：国家高技术研究发展计划("863"计划)资助项目(2013A050104);国家科技支撑计划资助项目(2009BAG12A09)

摘　　要：针对电力系统三相不平衡电压跌落故障,提出了一种统一电能质量调节器(UPQC)的能量优化控制策略。根据UPQC三相不平衡电压跌落故障下的基波相量图,分析了UPQC的最优稳态功率,推导了UPQC所需的补偿能量;依据UPQC主电路补偿能量最小的原则,采用粒子群算法(PSO)对串联补偿单元补偿电压的注入角θa、θb、θc进行了优化,并通过对补偿电压注入角的控制实现了UPQC的能量优化控制。仿真结果表明,所提出的能量优化控制策略可以有效解决电能质量问题,同时可以减小UPQC的补偿能量,从而提高了补偿装置的经济性。Aiming at the problem of three-phase unbalanced voltage sags in the power system,an energy optimization control strategy for a unified power quality conditioner（UPQC） was proposed.Based on the fundamental wave phasor diagram of UPQC during three-phase unbalanced voltage sags,the optimal steady-state power of UPQC was analyzed and the required compensation energy of UPQC was also derived.Based on the principle of minimum compensation energy of UPQC,the injection angle θa 、θb 、θc of compensation voltage of the series compensation unit was optimized by particle swarm optimization algorithm,and energy optimization control of UPQC was realized by controlling the injection angle of compensation voltage.Simulation results confirm that,the proposed energy optimization control strategy can effectively solve power quality problems and can also reduce the compensation energy of UPQC,thereby the economy of the compensation device is improved.

关 键 词：统一电能质量调节器 三相不平衡电压跌落 电能质量 能量优化 

分 类 号：TM71[电气工程—电力系统及自动化]