应用于微电网中静态转换开关的强制关断技术  

Forced Turn off Technology Applied to Static Transfer Switch in Microgrid

作　　者：王伟岸 乔道骥 WANG Weian;QIAO Daoji(Technical Center,Shanghai Electric Power Transmission and Distribution Equipment Company,Shanghai 200722,China;School of Electronic Information and Electrical Engineering,Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]上海电气集团输配电装备有限公司技术中心,上海200722 [2]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《电器与能效管理技术》2024年第12期15-20,68,共7页Electrical & Energy Management Technology

摘　　要：针对微电网中由晶闸管构成的静态转换开关(STS)关断时间较长的问题,提出一种结合微电网内储能变流器使用的强制关断方法,并给出理论计算数学模型。利用储能变流器结构中的拓扑特点,在微电网由并网运行转孤网运行过程中对晶闸管施加反向电压,促使晶闸管电流提前过零,从而完成强制关断。通过对所提方法的数学模型分析,揭示影响该强制关断技术的主要因素。为了解决实际工程中的应用问题,给出实际应用中的强制关断控制流程,最后通过仿真分析和实验验证了所提方法的正确性。In order to solve the problem that the static transfer switch of the thyristor in the microgrid is hard to shut off,a kind of forced turn off method combined with the energy storage converter in the microgrid is proposed and the mathematical model of the method is also given.The topology characteristics in the structure of energy storage converter are used to apply the reverse voltage to the thyristor during the operation of changing mode of grid connected to isolated network.The thyristor current is dropped to zero to complete the forced turn off.By analyzing the mathematical model of the proposed method,the main factors affecting the forced turn off technology are revealed.In order to solve the application problems in practical engineering,the forced turn off control process in practical application is also given.Finally,the correctness of the proposed method is verified by the simulation analysis and the test.

关 键 词：静态转换开关 储能变流器 整流器 微电网 

分 类 号：TM46[电气工程—电器]