摘要
为达到现代电网供电可靠性高、连续性强的标准,设计了一种适用于双电源输入电力电子变压器(DPI-PET)拓扑。其中,输入级为并联模块化多电平变流器(MMC),实现一路电源因故障停电时能快速配合另一路电源工作,并保持网侧以及直流侧电压平稳;输出级为YN联结的三个单相逆变器,解决各种异常工况下电能质量的影响,各环节结合运行状态给出了相应的控制策略。在Matlab/Simulink中建立10 kV/380 V的配电网DPI-PET进行仿真研究,验证了所提拓扑的有效性与实用性。
In order to meet the high reliability and continuity of modern power grids,a dual-power-input power electronic transformer(DPI-PET)topology is designed in this paper.The input stage is a parallel modular multilevel converter(MMC),which realizes that one power supply can quickly cooperate with another power supply due to a power outage,and keeps the voltage on the grid side and the DC side stable.The output stage is three single-phase inverters connected by YN,which solves the influence of power quality under various abnormal conditions.The corresponding control strategies are given in combination with the running status of each link.Finally,a 10kV/380V distribution network DPI-PET is built in Matlab/Simulink for simulation study,which verifies the validity and practicability of the proposed topology.
作者
苗宇
袁旭峰
邹晓松
邵振
谈竹奎
徐玉韬
Miao Yu;Yuan Xufeng;Zou Xiaosong;Shao Zhen;Tan Zhukui;Xu Yutao(School of Electrical Engineering,Guizhou University,Guiyang 550025,China;Electric Power Research Institute of Guizhou Power Grid Co.,Ltd.,Guiyang 550002,China)
出处
《电测与仪表》
北大核心
2022年第4期84-90,共7页
Electrical Measurement & Instrumentation
基金
国家自然科学基金资助项目(51667007)
中国南方电网公司重点科技项目(GZKJQQ00000417)
贵州省科技计划项目([2018]5615
[2019]1058
[2019]1128)。
关键词
双电源输入
电力电子变压器
配电网
控制策略
电能质量
dual power input
power electronic transformer
distribution network
control strategy
power quality
