一种基于DAB-Marx电路的新型直流电压互感器试验脉冲电源  

A new voltage pulse power supply based on DAB-Marx circuit for DC voltage transformer calibration

作　　者：徐孟玥 刘开培[1] 秦亮[1] 翟少磊 魏龄 XU Mengyue;LIU Kaipei;QIN Liang;ZHAI Shaolei;WEI Ling(School of Electrical and Automation,Wuhan University,Wuhan 430072,China;Electric Power Research Institute of Yunnan Power Grid Co.,Ltd.,Kunming 650214,China)

机构地区：[1]武汉大学电气与自动化学院,湖北武汉430072 [2]云南电网有限责任公司电力科学研究院,云南昆明650214

出　　处：《武汉大学学报（工学版）》2021年第8期731-739,共9页Engineering Journal of Wuhan University

基　　金：云南电网有限责任公司科技项目(编号:YNKJXM20190047)。

摘　　要：针对常规高压脉冲试验电源存在的可移动性差、仅单极性脉冲输出和设备效率低等问题,提出了一种基于双有源桥(dual active bridge, DAB)和Marx电路的试验电源。该拓扑结构采用储能系统供电,试验过程中不需要外部电源接线,可以方便地实现多种场景下的现场试验。同时,试验完成后可由DAB变流器回收Marx电路中的剩余能量,实现一次充电多次试验,提高了试验电源的工作效率;通过复用整流桥,DAB-Marx电路可以输出双极性电压脉冲,拓展试验脉冲电源的测试功能。最后,通过仿真验证了该DAB-Marx电路在充电与能量回收阶段都具有软开关特性,产生的脉冲电压符合相关标准要求。Aiming at the problems of poor mobility, only unipolar pulse output and low equipment efficiency of conventional high-voltage pulse test power supplies, this paper proposes a test power supply based on dual active bridge(DAB) and Marx circuit. It uses an energy storage system for power supply, no external power supply is required, and it can easily implement field tests in a variety of scenarios. At the same time, after the test is completed, the residual energy in the Marx circuit can be recovered by the DAB converter, which can achieve multiple tests with one charge and improve the working efficiency of the test power supply. By multiplexing the rectifier bridge, DAB-Marx circuit can output bipolar voltage pulses, which broadens the test range of DC voltage transformers. Finally, this paper verifies that through simulation,the DAB-Marx circuit has soft switching characteristics during the charging and energy recovery stages, and the pulse voltage generated meets the requirements of relevant standards.

关 键 词：脉冲电压源 现场测试 直流电压互感器 MARX电路 双有源桥变换器 

分 类 号：TU457[建筑科学—岩土工程]