基于IGBT新型消弧线圈自动调谐系统  

A novel IGBT based arc-suppression coil automatic tuning system

作　　者：靳汪一[1] 曾祥君[1] 伍智华[1] 陶金[1] 

机构地区：[1]长沙理工大学电气与信息工程学院,湖南长沙410004

出　　处：《电力科学与技术学报》2010年第2期56-60,共5页Journal of Electric Power Science And Technology

基　　金：国家自然科学基金(50977003);湖南省高校创新平台开放基金(09K067);湖南省高校科技成果产业化培育项目(09CY011)

摘　　要：在配电网电容电流实时测量新方法研究的基础上,提出一种新型的基于IGBT控制的消弧线圈自动调谐系统。配电网正常运行时,控制IGBT模块使电路断开,避免工频过电压的产生;配电网发生单相接地故障时,控制IGBT模块使电路导通,消弧线圈投入运行,采用PWM控制技术对配电网接地电容电流进行补偿,有效促进瞬间熄灭故障电弧;此种控制方法补偿速度快、范围宽、造价低,实现了电感电流的无级调节.通过MATLAB对模型进行仿真,验证了该方法的可行性及其优点.Based on measuring capacitance current,a novel arc-suppression coil automatic tuning system with IGBT control is proposed in this paper.When the distribution network is normal,the IGBT circuit is off,and overvoltage will be reduced.When single-phase grounding fault occurs,the IGBT circuit is on and the arc-suppression coil is put into operation,the grounding fault current can be fully compensated by the corresponding control strategy of the IGBT on-off control.The fault arc can thus be extinguished instantaneously.Theory analysis and MATLAB simulation results show that the proposed method has high speed,wide adjustment range and low cost,the arc-suppression coil can be tuned continuously,the grounding fault current can be compensated effectively.

关 键 词：配电网 IGBT 消弧线圈 电容电流 PWM 

分 类 号：TM727[电气工程—电力系统及自动化]