特高压串补输电线路熄灭潜供电弧的方法  

Secondary Arc Extinction in UHV Transmission Line with Series Capacitor Compensation

作　　者：胡玉生[1] 商立群[1] 刘培[1] 

机构地区：[1]西安科技大学电气与控制工程学院,西安710054

出　　处：《电力系统及其自动化学报》2014年第8期29-33,共5页Proceedings of the CSU-EPSA

基　　金：陕西省教育厅科研计划资助项目(12JK0568)

摘　　要：单相自动重合闸的成功合闸与潜供电弧的快速熄灭关系密切。在特高压串补输电线路发生单相接地故障时,为加快熄灭潜供电弧,提出采用一定数值的电阻短接故障相电容的方法。详细地阐述了潜供电流的频率特性,并给出直流分量的大小及衰减的快慢与故障时刻、弧道电阻的关系。最后以实际工程为例进行仿真计算。结果表明,该方法对潜供电弧的熄灭是实用和有效的。Successful single-phase-reclose is closely related to the quick self-extinguish of the secondary arc. In order to acceleratingly extinguish the arc, a method via a certain resistor to short up the fault phase capacitance is proposed when a single-phase ground fault occurres in UHV transmission line with series compensation. This paper elaborates frequency characteristics of secondary-are currents, and indicates the relationship between the value, attenuation rate of DC component of the secondary arc and the fault time, arc way resistance. The result confirms that this method is feasible and effective to extinguish secondary arc.

关 键 词：特高压串补输电线路 潜供电弧 直流分量 短接电阻 

分 类 号：TM773[电气工程—电力系统及自动化]