混合型有载调压变压器拓扑结构及控制策略研究  

Research on topological structure and control strategy of a hybrid on-load tap changer transformer

作　　者：刘水 彭宏亮 肖东裕 徐颖华 钟振鑫 王松[2] 尹靖元[2] LIU Shui;PENG Hongiang;XIAO Dongyu;XU Yinghua;ZHONG Zhenxin;WANG Song;YIN Jingyuan(Huizhou Power Supply Bureau,Guangdong Power Grid Co.,Ltd.,Huizhou,Guangdong 516000,China;The Institute of Electrical Engineering Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]广东电网有限责任公司惠州供电局,广东惠州516000 [2]中国科学院电工研究所,北京100190

出　　处：《浙江电力》2024年第10期124-132,共9页Zhejiang Electric Power

基　　金：国家重点研发计划(2021YFB2601602);南方电网公司科技项目(031300KK52220009)。

摘　　要：针对传统有载调压变压器存在功能单一、动态特性差等问题,结合工频变压器高效可靠和电力电子变换器易于控制的优点,提出了一种混合型有载调压变压器拓扑结构。通过增加背靠背变换器,并设计相应控制策略,实现了有载调压变压器连续调压和无功补偿的功能;提出一种串联电压补偿方法,实现了对负载的故障保护。最后,分别基于MATLAB仿真软件和实验平台搭建了混合型有载调压变压器实验模型,仿真和实验结果验证了所提拓扑结构和控制策略的正确性和有效性。To address the issues of limited functionality and poor dynamic characteristics in traditional on-load tap changer transformers,this paper proposes a topological structure for a hybrid on-load tap changer transformer.This structure combines the efficiency and reliability of power-frequency transformers with the controllability of power electronic converters.By integrating back-to-back converters and designing corresponding control strategies,con-tinuous voltage regulation and reactive power compensation for the on-load tap changer transformer are achieved.Ad-ditionally,the paper introduces a series voltage compensation method to provide fault protection for the load.Fi-nally,an experimental model of the hybrid on-load tap changer transformer is built using MATLAB simulation soft-ware and an experimental platform.Both simulation and experimental results verify the correctness and effectiveness of the proposed topological structure and control strategy.

关 键 词：有载调压变压器 背靠背变换器 无功补偿 故障保护 

分 类 号：TM46[电气工程—电器]