摘要
配电网要求电力电子变换器能够具备足够快的响应速度,同时能够稳定运行。现有的控制方法在快速性与稳定性之间存在一定矛盾。针对这一问题,本文以交流并网电力电子变换器为研究对象,提出一种高性能的无源性控制方法,将控制对象整定为无源系统,实现本质稳定运行,并且基于控制参数对电力电子变换器输出性能的影响规律,以动态调节过程中的超调量与过渡时间为控制目标,对控制部分中的各个参数进行优化设计,以解决稳定性与快速性之间的矛盾。PSCAD模型仿真结果证明了所提控制方法能够保证电力电子变换器具有足够的稳定裕量与动态性能,动态调节过程中的超调量、过渡时间明显减小,满足电力电子变换器的高性能稳定运行的要求。
The power electronic converter in the distribution network is required to have sufficient response speed and,at the same time,stable operation.The existing control method has certain contradiction between the rapidity and stability.In view of this issue,the AC grid connected power electronic converter is taken as the research object in this paper,a kind of passive control method with high performance is proposed,which sets the controlled object as passive system and achieves essential stable operation.Moreover,based on the influence of control parameters on the output performance of power electronic converter and with the overshoot and transition time in the process of dynamic regulation as control objectives,the optimization design of each parameter in the control part is performed to solve the contradiction between stability and dynamic property.The PSCAD simulation results proves that the proposed control method can ensure that the power electronic converter has sufficient stability margin and dynamic property,and the overshoot and transition time in the process of dynamic regulation are significantly reduced,which can meet the requirements of high performance and stable operation of the power electronic converter.
作者
孙晓彤
袁敞
徐群伟
SUN Xiaotong;YUAN Chang;XU Qunwei(North China Electric Power University State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,Beijing 102206,China;Electric Power Research Institute of State Grid Zhejiang Electric Power,Hangzhou 310014,China)
出处
《电力电容器与无功补偿》
2023年第1期81-93,共13页
Power Capacitor & Reactive Power Compensation
基金
国家重点研发计划项目(2018YFB0905800)
国家自然科学基金项目(51877081)。
关键词
电力电子变换器
无源性控制
动态性能
参数优化
power electronic converter
passive based control(PBC)
dynamic property
parameter optimization
