基于改进粒子群算法的自适应构网型变流器控制策略  

Adaptive Grid-type Converter Control Strategy Based on Improved Particle Swarm Algorithm

作　　者：段玉 朱子民 王小云 陈杰 马健[1,2] 南东亮 DUAN Yu;ZHU Zimin;WANG Xiaoyun;CHEN Jie;MA Jian;NAN Dongliang(Electric Power Research Institute of State Grid Xinjiang Electric Power Co.,Ltd.,Urumqi,Xinjiang 830011,China;Xinjiang Key Laboratory of Whole Process Simulation for Power System,Urumqi,Xinjiang 830011,China;School of Electrical Engineering,Xinjiang University,Urumqi,Xinjiang 830046,China)

机构地区：[1]国网新疆电力有限公司电力科学研究院,新疆乌鲁木齐830011 [2]新疆电力系统全过程仿真重点实验室,新疆乌鲁木齐830011 [3]新疆大学电气工程学院,新疆乌鲁木齐830046

出　　处：《广东电力》2024年第2期10-17,共8页Guangdong Electric Power

基　　金：国网新疆电力有限公司电力科学研究院科技项目(5230DK230001)。

摘　　要：构网型控制是一种改善新能源高渗透率下电力系统稳定性问题的技术手段。针对传统构网型变流器均采用固定参数控制而未能发挥出最佳调频效果这一问题,基于构网型变流器控制参数可调的特点,提出一种自适应控制策略,以优化构网型变流器的输出并改善电力系统的动态特性。首先,通过仿真实验得到典型构网型变流器虚拟惯量和阻尼系数在大功率事件下对系统动态特性的影响;其次,研究典型构网型变流器的频率曲线与功角曲线,提出包含频率偏差和频率变化率的自适应构网型变流器控制策略;然后,通过改进粒子群算法对自适应控制策略涉及参数进行整定;最后,基于MATLAB/Simulink搭建的微电网模型,验证所提控制策略的稳定性与鲁棒性。仿真结果表明,所提控制策略可以自适应改变控制参数,使构网型变流器的输出能够满足系统各个阶段的不同需求,优化电力系统的动态特性。The grid-type control is a technical means to improve the stability of the power system under the high penetration rate of new energy sources.In view of the fact that the traditional grid-type converter is controlled by fixed parameters,which makes it unable to play the best frequency regulation effect,based on the adjustable control parameters of the grid-type converter,the adaptive control is proposed to optimize the output of the grid-type converter and to improve the dynamic characteristics of the power system.Firstly,the effect on dynamic characteristics of typical grid-type converter virtual inertia and damping coefficient under high-power events are obtained through simulation experiments.Afterwards,an adaptive grid-type converter control strategy including frequency deviation and frequency change rate is proposed by studying the frequency curve and power angle curve of typical grid-type converter.Then,the parameters involved in the adaptive control strategy are calibrated by the improved particle swarm algorithm.Finally,the stability and robustness of the proposed method is verified by a microgrid model built based on MATLAB/Simulink.The simulation results show that the proposed method can adaptively change the control parameters so that the output of the grid-type converter can meet different demands of the system at various stages and optimize the dynamic characteristics of the power system.

关 键 词：构网型变流器 自适应控制 改进粒子群算法 参数整定 电力系统稳定 

分 类 号：TM762[电气工程—电力系统及自动化] TM46