基于直接式AC/AC变换的两相支撑调控型混合配电变压器  

Direct AC/AC conversion based hybrid distribution transformer with two-phase supported regulation

作　　者：蔡国伟[1] 王艺博 刘闯[1] 朱炳达 郭东波 张翰文 CAI Guowei;WANG Yibo;LIU Chuang;ZHU Bingda;GUO Dongbo;ZHANG Hanwen(Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education,Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]东北电力大学现代电力系统仿真控制与绿色电能新技术教育部重点实验室,吉林吉林132012

出　　处：《电力自动化设备》2020年第12期8-14,共7页Electric Power Automation Equipment

基　　金：国家自然科学基金面上项目(51877035)。

摘　　要：针对配电网中不确定性因素导致的电压跌落/骤升给敏感负荷带来的不利影响,提出了一种基于直接式AC/AC变换的两相支撑调控型混合配电变压器(HDT)。该HDT由直接式AC/AC变换器与传统工频变压器组合而成,能够根据负荷需求进行电压幅值与相角的柔性调控。对所采用的直接式AC/AC变换器拓扑及其调制策略进行了阐述分析。在此基础上,提出了基于直接式AC/AC变换的HDT系统结构。依托HDT系统结构,对其工作原理进行了详细分析并对HDT系统的电压幅值与相角调控范围进行了定量研究。最后通过搭建1 kW的实验原理样机,对所提出的HDT系统理论分析的正确性与有效性进行了实验验证。In view of the adverse effects of voltage sag/swell caused by uncertainties in distribution network on sensitive loads,a direct AC/AC conversion based HDT(Hybrid Distribution Transformer)with twophase supported regulation is proposed.The HDT is composed of direct AC/AC converters and traditional power frequency transformer.It can adjust the voltage amplitude and phase angle flexibly according to load demand.The direct AC/AC converter topology and its modulation strategy are illustrated and analyzed.On this basis,the structure of direct AC/AC conversion based HDT system is proposed.The working principle of the HDT system is analyzed in detail,and the voltage amplitude and phase angle control range of the HDT system are studied quantitatively.Finally,a 1 kW experimental principle prototype is built to verify the correctness and validity of the theoretical analysis of the proposed HDT system.

关 键 词：混合配电变压器 传统工频变压器 直接式AC/AC变换器 电压幅值调控 电压相角调控 

分 类 号：TM41[电气工程—电器] TM46