TSC最佳投入策略的理论分析  

Theoretical Analysis of Optimal Switching Strategies for TSC

作　　者：陈立[1] 申双葵[1] 马庆安[2] 解绍锋[2] 郭蕾[2] 

机构地区：[1]国网四川省电力公司成都供电公司,成都610041 [2]西南交通大学电气工程学院,成都610031

出　　处：《成都工业学院学报》2015年第2期38-40,共3页Journal of Chengdu Technological University

基　　金：国家自科基金"高速铁路接触网在线防冰的基础理论研究"(51307142);国网四川省电力公司资助项目"电气化高速铁路对成都电网继电保护的影响"

摘　　要：晶闸管投切电容器(TSC)投入后的暂态电流包含基波稳态分量和衰减的谐波分量。通过对谐波电流峰值求极小值点,得到使TSC电流的谐波分量最小的投入策略,从理论上验证相关文献关于TSC触发时刻选择的论述,分析谐波电流峰值与电容器初始电压之间的关系,得出将电容器充电到峰值并在晶闸管电压过零点触发可使谐波电流充分小的结论。The transient current contains a fundamental component and a decaying harmonic component in the switching process of TSC.In this paper, the harmonic term is optimized and the optimal switching strategy is derived.Thus, the switching strategy discussed in related reference is verified. The relationship between the peak value of the harmonic term and the predetermined value of the capacitor voltage is analyzed.It is shown that if the capacitor is charged to the peak value of the system voltage and thyristors are triggered at its zero-crossing point, the peak value of harmonic current is small enough.

关 键 词：晶闸管投切电容器 最小谐波电流 投入策略 

分 类 号：TM922[电气工程—电力电子与电力传动]