基于IGBT的配电变压器有载调压开关参数设计及分析  

Parameter design and analysis of IGBT-based on-load tap changers for distribution transformer

作　　者：周念成[1] 苏宇[1] 王强钢[1] 葛军凯 高俊青 张静 ZHOU Niancheng;SU Yu;WANG Qianggang;GE Junkai;GAO Junqing;ZHANG Jing(State Key Laboratory of Power Transmission Equipment ＆ System Security and New Technology, Chongqing University, Chongqing 400044, China;Yuhang Power Supply Company of State Grid Zhejiang Hangzhou Electric Power Company, Hangzhou 311100, China;Zhejiang Truly Electric Co., Ltd., Hangzhou 311100, China)

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044 [2]国网浙江杭州市余杭区供电公司,浙江杭州311100 [3]浙江群力电气有限公司,浙江杭州311100

出　　处：《电力自动化设备》2018年第7期35-42,67,共9页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51607015);中央高校基本科研业务费专项资金资助项目(106112016CDJXY-150001);重庆市基础与前沿研究计划项目(cstc2016jcyj A0402)~~

摘　　要：对比了机械式、混合式和全电力电子式配电变压器有载调压开关(OLTC)的结构特点,提出了一种基于绝缘栅双极型晶体管(IGBT)的配电变压器OLTC电路结构和控制方案,给出了该OLTC主电路IGBT器件、过渡电路和吸收电路的参数设计方法,推导了所设计OLTC的有功损耗计算式。所提方案克服了机械式OLTC动作慢、切换产生电弧等缺点,可辅助配电变压器实现快速、无弧的有载调压。搭建了仿真模型和实验平台,对OLTC的调压性能进行了测试,分析了开关参数对其有功损耗及IGBT承受电流电压的影响,将仿真、实验和理论计算结果对比,验证了所提有载调压方案的有效性。The structural characteristics of mechanical,hybrid and full-electronic OLTC（On-Load Tap Changer）for distribution transformer are compared,and then the OLTC circuit structure and control scheme are proposed based on IGBT（Insulated Gate Bipolar Transistor）for distribution transformer.The parameter design methods of IGBT devices,transition circuit and absorption circuit of proposed OLTC are given,and the calculation formula of active power loss of proposed OLTC is deduced.The proposed OLTC scheme overcomes the shortcomings of mechanical OLTC,such as the slow operation,switching arcing,and can assist the distribution transformer to realize fast and nonarc on-load voltage regulation.The simulation model and experimental platform are built to test the voltage regulation performance of the proposed OLTC and analyze the influence of the switch parameters on the active power loss and IGBT tolerable current and voltage.The simulative,experimental and theoretical calculation results are compared to verify the effectiveness of the proposed IGBT scheme.

关 键 词：配电变压器 有载调压开关 绝缘栅双极型晶体管 参数设计 有功损耗 

分 类 号：TM403.4[电气工程—电器]