基于STATCOM的功率振荡阻尼器和PSS控制器协调控制研究  

Coordinated control of POD and PSS controllers with STATCOM to improve oscillation stability of single and multi-machine power systems

作　　者：蔡卫江 李雪锋 赵士正 CAI Weijiang;LI Xuefeng;ZHAO Shizheng(Nanjing Nari Water Conservanay and Hydropower Technology Co..Ltd.,Nanrui Group(Stale Grid Electric Power Research Institute)Co.,Ltd.,Nanjing 211106,Jiangsu,China;Cambodia Sanghe Secondary Hydropower Co.,Huaneng Lancangjiang River Hydropower Co..Ltd.,Kunming 650214,Yun nan,China;Electrical and Mechanical Branch,Huadong Engineering Corporation Limited,Hangzhou 311122,Zhejiang,China)

机构地区：[1]南瑞集团有限公司(国网电力科学研究院)南京南瑞科技股份有限公司,江苏南京211106 [2]华能澜沧江水电股份有限公司柬埔寨桑河二级水电公司,云南昆明650214 [3]华东勘测设计研究院有限公司机电分院,浙江杭州311122

出　　处：《中国工程机械学报》2020年第1期34-39,共6页Chinese Journal of Construction Machinery

基　　金：国家自然科学基金资助项目(51677066)。

摘　　要：静态同步补偿器(STATCOM)的本质是并联电压源转换器(VSC),可以通过控制机端电压以快速改变输电线路中的无功电流分量,从而提高系统稳定性。为分析补偿器的阻尼效应对电力系统振荡稳定性的增益效果,提出了一种配有静态同步补偿器的电力系统模型,采用粒子群算法对控制器参数进行自适应优化,通过综合控制注入的母线电压和补偿器电容电压,可以提高单机无穷大系统(SMIB)系统和多机系统的暂态稳定性的特性。通过构建Matlab仿真模型,分析了该仿真系统振荡稳定性在不同STATCOM阻尼效应下的变化情况,测试了同状态下电力系统稳定器(PSS)对系统稳定性的增益,以及PSS与STATCOM的综合控制作用。仿真结果表明:静态同步补偿器能够一定程度上改善系统暂态稳定性,在重负荷运行状态下其阻尼性能优于PSS。在PSS已经满足系统阻尼要求的情况下,STATCOM与PSS的协调作用可进一步提高电力系统在复杂外部条件下的动态性能。Static synchronous compensator(STATCOM)is a shunt voltage source converter(VSC),which improves system stability by controlling AC voltage to change reactive current in transmission lines.In this paper,a power system device equipped with STATCOM is designed,which improves the transient stability of SMIB system and multi-machine system by coordinating injection bus voltage and STATCOM capacitor voltage,which uses particle swarm optimization to adaptively optimize controller parameters.The simulation model of the device is established by using Matlab.The experiment of the model under STATCOM damping effect is demonstrated,and the change of power system oscillation stability is analyzed.At the same time,the power system stabilizer(PSS)gains power system stability under the same conditions,and the STATCOM and PSS with the proposed controller is tested.The simulation results show that the STATCOM can improve the transient stability to some extent,and its damping effect is better than PSS under heavy load operation.The coordination between STATCOM and PSS can further improve the dynamic performance of the power system under complex external conditions when the PSS already meet the damping requirements of the system.

关 键 词：静态同步补偿器 电力系统稳定器 功率振荡阻尼器 粒子群算法 

分 类 号：TM743[电气工程—电力系统及自动化]