基于冲击大电流测量断路器回路电阻的方法研究  

Research about the Method that Testing Breaker Loop Resistance Based on High Impulse Current

作　　者：夏小飞[1] 

机构地区：[1]广西电网公司电力科学研究院,南宁530023

出　　处：《电气技术》2013年第10期28-33,共6页Electrical Engineering

摘　　要：断路器的回路电阻是十分重要的电气特性参数。本文提出了一种峰值达1000A以上的冲击大电流检测回路电阻的方法,该方法能够精确的测量断路器的回路电阻,并采用模拟实验和仿真计算对该方法进行了验证。通过实验室的模拟试验,研究了基于超级电容器产生千安级冲击大电流的实现方法,并验证了级小电阻的测量精度。通过EMTP-ATP仿真计算,分析了基于超级电容器产生的冲击大电流波形、多断口断路器均压电容和引线电感的影响。The loop resistance is the breaker＇s very important electrical parameter, ires paper presents a testing loop resistance method based on high impulse current that peak value is higher than 1000A. This method which can accurately measure the breaker＇s loop resistance, has been verified by experiments and simulation. With laboratory experiments, the method of producing high impulse current based on super capacitor is researched, and the measurement accuracy of testing some microhm resistance is verified. With simulation by EMTP-ATP, the high impulse current waveform and the effect of grading capacitance and lead inductance are analyzed.

关 键 词：断路器 回路电阻 冲击大电流 均压电容 引线电感 EMTP-ATP 

分 类 号：TM561[电气工程—电器]