光伏快速充电站配电变压器端电能质量综合控制研究  

Comprehensive control of power quality at the distribution transformer end of a photovoltaic fast charging station

作　　者：车伟 陈洁 胡亚杰 尹惠 刘岚 王思尹 CHE Wei;CHEN Jie;HU Yajie;YIN Hui;LIU Lan;WANG Siyin(Beijing Key Laboratory of Distribution Transformer Energy-Saving Technology(China Electric Power Research Institute),Beijing 100080,China;Changsha University of Science and Technology,Changsha 410114,China)

机构地区：[1]配电变压器节能技术北京市重点实验室(中国电力科学研究院有限公司),北京100080 [2]长沙理工大学,湖南长沙410114

出　　处：《电力系统保护与控制》2022年第21期128-137,共10页Power System Protection and Control

基　　金：国家自然科学基金项目资助(51708194,51507014);配电变压器节能技术北京市重点实验室(中国电力科学研究院有限公司)开放基金项目资助(PDB51201901686);湖南省教育厅科学研究重点项目资助(18A120)。

摘　　要：针对光伏快速充电站将光伏发电与电动汽车快速充电站有机结合,在充分发挥清洁能源优势和大量提升充电效率的同时所带来的电能质量扰动类型复杂、变化快速等问题,提出了一种基于串并联组合配电网柔性交流输电(distribution flexible AC transmission system,DFACTS)的新型电能质量补偿器的电能质量综合控制方法。深入研究了新型电能质量补偿器主电路拓扑,建立起了动态工作模型。详细分析了新型电能质量补偿器线性自抗扰控制方法的工作原理,设计出线性自抗扰控制器。并针对各DFACTS控制器间的交互影响,提出多DFACTS控制器的协调控制策略。最后搭建仿真模型,进行仿真验证。仿真结果表明,所提出的新型电能质量补偿器采用线性自抗扰控制方法相比传统PI控制方法,提高了电能质量扰动快速变化时的综合补偿能力和动态响应能力。并且验证了该协调控制能有效提高系统电压稳定能力,具有良好的可行性和有效性。There are problems of complex power quality disturbance types and rapid changes caused by the organic combination of photovoltaic power generation and electric vehicle fast charging station while at the same time giving full play to the advantages of clean energy and greatly improving charging efficiency.Thus a power quality integrated control method for a new power quality compensator based on a‘series parallel combined’distribution flexible AC transmission system(DFACTS)is proposed.The main circuit topology of the new power quality compensator is studied and the dynamic working model is established.The working principle of the linear active disturbance rejection control method of the new power quality compensator is analyzed in detail,and a linear active disturbance rejection controller is designed.Given the interaction between DFACTS controllers,a coordinated control strategy of multiple DFACTS controllers is proposed.Finally,a simulation model is built for verification.The results show that the proposed new power quality compensator improves the comprehensive compensation ability and dynamic response ability of the rapid change of power quality disturbance with the help of a linear auto disturbance rejection control method.It compares well with the traditional PI control method.It is verified that the coordinated control can effectively improve the voltage stability of the system,and has good feasibility and effectiveness.

关 键 词：快速充电站 光伏发电 多DFACTS控制器 线性自抗扰控制 协调控制 

分 类 号：TM421[电气工程—电器] TM910.6