有功注入型电压质量补偿器控制策略及仿真研究  

Simulation research on control strategy of voltage quality compensator based on active power injection

作　　者：刘创华 刘莹[1] 方琼[1] LIU Chuanghua;LIU Ying;FANG Qiong(State Grid Tianjin Electric Power Company,Tianjin 300010,China)

机构地区：[1]国网天津市电力公司,天津300010

出　　处：《电力系统保护与控制》2020年第16期108-114,共7页Power System Protection and Control

基　　金：国家高技术研究发展计划项目(863课题)资助(2015AA050104);国家电网公司总部科技项目资助(SGHB0000KXJS1800411)。

摘　　要：为了解决对电压质量问题长时间补偿和复合补偿的需求,提出了一种有功注入型电压质量补偿装置。利用PWM整流器为装置直流母线提供电压支撑,使装置能够实现对长时间的电压质量扰动的有效补偿。采用基于瞬时无功理论的算法对电压质量扰动进行检测,采用了基于最小电压注入法的补偿策略和分段补偿逻辑,提出了复合电压质量补偿控制策略,能够实现对电压暂降、暂升、谐波和欠电压等电压扰动的多目标补偿。在PSCAD/EMTDC中,对所提主电路拓扑和补偿控制策略进行了仿真分析和验证。仿真结果表明,所提装置能够对电压质量问题进行长时间补偿和复合补偿,主电路拓扑和补偿控制策略可行有效。To solve the demand for long-term and complex compensation for voltage quality problems,a kind of active power injection voltage quality compensation device is proposed.A PWM rectifier is used to provide voltage support for the DC bus of the device,so that the device can effectively compensate for long-term voltage quality disturbance.An algorithm based on instantaneous reactive power theory is used to detect the voltage quality disturbance.The compensation strategy based on the minimum voltage injection method and piecewise compensation logic is adopted,and the composite voltage quality compensation control strategy is proposed.This can realize the multi-objective compensation of voltage sag,swell,harmonic and undervoltage.In PSCAD/EMTDC,the proposed main circuit topology and compensation control strategy are simulated and verified.The simulation results show that the proposed device can realize the long-term compensation and compound compensation for the voltage quality problem,and the main circuit topology and compensation control strategy are feasible and effective.

关 键 词：电压质量 解耦控制 复合补偿 分段补偿 最小电压注入 

分 类 号：TM761.12[电气工程—电力系统及自动化]