基于EMTP的复合开关投切仿真应用分析  

The simulation design of throwing and cutting the compound switch based on EMTP

作　　者：王彦文[1] 李旭升[1] 石晓义[1] 

机构地区：[1]中国矿业大学(北京),北京100086

出　　处：《华北科技学院学报》2009年第1期44-47,共4页Journal of North China Institute of Science and Technology

摘　　要：讨论了晶闸管和接触器在投切电容方面的不足,分析了复合开关的基本结构和原理,依据复合开关的投切原则对投切时刻的选取进行理论分析,在电磁暂态仿真程序EMTP中应用,建立仿真电路模型,并分别对晶闸管的过零触发及电流换相进行暂态仿真。仿真结果很好的抑制了电流冲击,验证了复合开关投切的可靠性和准确性。The paper first discuss the disadvantage of thyristor and contactor in the throwing and Cutting capacitor , analyses the structure and principle of compound switch, then according to the law of throwing and cutting compound switch and analyses the choose of switching moment theoretically. At last introduces the use of Electro-Magnetic Transient Program EMTP , and build the simulation circuit model , separately simulate thyristor zero trigger and current commutation transiently, simulation results show that current surge is suppressed, proving the reliability and accuracy of compound switch .

关 键 词：复合开关 EMTP 无功补偿 交流接触器 

分 类 号：TP273.3[自动化与计算机技术—检测技术与自动化装置]