新型SVC-M型磁阀式可控动态无功补偿技术研究

磁阀式可控电抗器的出现为超高压、特高压电网的电压控制、无功调节提供了一种全新的技术手段。并联电容补偿方式因电气化铁路自然功率因数低,系统难以达到标准要求。新型磁阀式可控电抗器,可调节电气化铁路系统的无功功率,通过公式推导的方式对无功检测和控制回路进行理论分析,另一方面,对磁阀式可控电抗器的谐波特性、伏安特性、控制特性及响应特性分别进行了分析,给出各种特性曲线。设计将提高响应速度后的MVCR应用到电气化铁道动态无功补偿中,使用MVCR+FC进行动态补偿,且动态补偿效果良好。

A new SVC-M-type magnetic valve controlled dynamic reactive power compensation technology

The valve controllable reactor is a bran-new technical method to control the ultrahigh voltage and the reactive power.Due to the low natural power factor in electrified railway system,the mode of compensation with parallel capacitor can’t satisfy the standards.The new magnetic valve controllable reactor could adjust the reactive power,and the reactive power and control loop were analyzed theoretically by formula derivation.The characteristics of harmonics,volt-ampere,control and response were analyzed also,and their curves of characteristics were given.The MVCR with improved response speed was applied to the dynamic reactive compensation of electrified railway and the compensation effects were excellent with the MVCR matched with fixed capacitance(FC).