T型输电线路零序阻抗参数带电测量研究  

Live line measurement to the zero sequence impedance parameters of multi-terminal transmission lines

作　　者：熊启新[1] 张承学[2] 胡志坚[2] 帅玲玲[1] 

机构地区：[1]江西省电力公司超高压分公司,江西南昌330096 [2]武汉大学电气工程学院,湖北武汉430072

出　　处：《电力系统保护与控制》2010年第15期65-68,共4页Power System Protection and Control

摘　　要：提出一种T接线输电线路零序阻抗参数带电测量新方法。详细介绍了该带电测量方法的测量原理与数学模型,并给出带电测量时T型线路的运行方式,通过获取测量源与利用全球卫星定位系统(GPS)作为异地测量的同步信号。通过数字仿真进行验证,仿真结果表明该带电测量方法是可行的,测量结果准确,完全能满足工程测量要求。Based on GPS technology,a novel method of live line measuring the zero sequence parameters of multi-terminal transmission lines is proposed.The operation modes of the transmission lines for live line measurement are given.The mathematical model of the new method is explained in detail.The methods to obtain big zero-sequence currents for live line measurement are introduced.In order to realize the synchronization of data acquisition,a GPS is used to obtain an accurate time tag for all the currents and voltages sampled at different substations.The digital simulation results are given.The simulation results prove that the new method can meet the needs of live line measurement of inductance parameters.

关 键 词：GPS T型输电线路 零序阻抗 带电测量 

分 类 号：TM773[电气工程—电力系统及自动化]