一种基于模糊控制的混合式配电变压器的控制策略  

A Control Strategy Based on Fuzzy Logic Control for Hybrid Distribution Transformer

作　　者：李大伟[1,2] 梁得亮[1,2] 高亚晨 张明康 张立石 Li Dawei;Liang Deliang;Gao Yachen;Zhang Mingkang;Zhang Lishi(State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong University,Xi’an 710049 China;Shaanxi Key Laboratory of Smart Grid Xi’an Jiaotong University,Xi’an 710049 China)

机构地区：[1]电力设备与电气绝缘国家重点实验室(西安交通大学),西安710049 [2]西安交通大学,陕西省智能电网重点实验室,西安710049

出　　处：《电工技术学报》2021年第S02期696-703,722,共9页Transactions of China Electrotechnical Society

基　　金：陕西省2018年重点研发计划资助项目(2018ZDCXL-GY-07-05)。

摘　　要：混合配电变压器(HDT)具有丰富的电压、电流调控功能。为了更好地实现HDT直流母线电压控制,将模糊控制(FLC)引入到传统比例-积分(PI)控制器中。通过选取适当的隶属度函数,构建相应的专家数据库,利用重心法解模糊,提出一种基于FLC的HDT直流母线电压控制策略,从而有效地提高了直流母线电压控制系统的暂态性能。在Matlab/Simulink中针对上电阶段、电网电压波动以及负载功率突变时的控制过程进行仿真分析,仿真结果验证了所设计的FLC控制的正确性和可行性。Hybrid distribution transformer(HDT)has rich voltage and current control functions.In order to better realize HDT DC bus voltage control,fuzzy logic control(FLC)is introduced into the traditional proportional-integral(PI)controller.By selecting the appropriate membership function,constructing the corresponding expert database,using the center of gravity method to resolve the fuzzy,a FLC-based HDT DC bus voltage control strategy is proposed to effectively improve the transient performance of the DC bus voltage control system.In Matlab/Simulink,simulation analysis is carried out for the control process during the power-on phase,grid voltage fluctuation and load power sudden change.The simulation results verify the correctness and feasibility of the designed FLC control.

关 键 词：混合式配电变压器 直流母线 模糊控制 暂态性能 

分 类 号：TM421[电气工程—电器]