基于电力电子变压器的三端协调控制  

Three-terminal synergistic control based on power electronic transformer

作　　者：周宇[1] 郝思鹏[1] 黄堃[1] 刘思亦 杨李星 Zhou Yu;Hao Sipeng;Huang Kun;Liu Siyi;Yang Lixing(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]南京工程学院电力工程学院,南京211167

出　　处：《电测与仪表》2018年第20期130-136,共7页Electrical Measurement & Instrumentation

基　　金：江苏省高校自然科学研究重大项目(17KJA470003)

摘　　要：为研究电力电子变压器对主网、交流微网、直流微网的三端协调控制,根据微网内分布式能源出力与功率缺额,提出了一种确定储能荷电状态预期值的方法。并基于此荷电状态值,综合考虑微网内源、荷、储三者关系,将微网运行状态划分为电源型微网和负载型微网。电力电子变压器根据微网类型,控制交直流微网功率流向与大小,最大化消纳分布式能源,以减少微网对配网的功率回馈次数及回馈时产生的功率损耗。仿真结果和实验数据验证了所提划分方法和控制策略的有效性。In order to analyze the synergistic power control of three-terminal power electronic transformer in power grid,AC micro-grid and DC micro-grid,a method to determine the expected value of energy storage state is proposed according to the power of distributed energy generation and the loss of power supply probability in the micro-grid.Based on the value of energy storage capacity and the relationship among the sources,load and energy storage,the type of micro-grid is divided into power micro-grid and load micro-grid.According to the type of micro-grid,power electronic transformer controls the power in AC and DC micro-gird and maximizes the consumption of distributed energy to reduce the number and loss of feedback power.The simulation results and experimental data verify the effectiveness of the proposed method and control strategy.

关 键 词：电力电子变压器 微网 储能 协调 

分 类 号：TM76[电气工程—电力系统及自动化]