关于电流过零点斜率计算方法的研究  

Research on Calculation of Slope at Current Zero-crossing

作　　者：阎对丰[1] 王安[1] 牛安[1] 彭剑飞[1] 张宝强[1] 杨庭发 

机构地区：[1]西安高压电器研究院有限责任公司,西安710077

出　　处：《高压电器》2015年第4期51-55,共5页High Voltage Apparatus

摘　　要：在断路器合成试验中,电流过零点斜率是影响断路器开断的重要参数。目前获得电流过零点斜率主要依靠人工法,难免会带来人为因素的误差,随着数字化测量仪器的发展,依靠计算机对试验数据进行数值计算是准确获得电流过零点斜率的理想方法。笔者研究了两种基于数值分析的算法:迭代法和曲线拟合法。通过理想函数和实际试验数据验证了两种方法的准确性,满足了大容量试验数据处理和分析的要求。In the synthetic test of breakers, the slope at zero-crossing of short-current is an important parameter. Currently, this parameter is mainly determined by manual method, which results in significant error inevitably. With the development of digital measurement system, a better method is introduced to calculate this parameter by computer, based on mathematics analysis of measured data. Two algorithms are proposed in this paper, based on mathematics analysis. Verified by applying those algorithms both on ideal signal and measured data, the algorithms are feasible, and have satisfied the requirement of data processing for high power test.

关 键 词：电流过零点斜率 断路器合成试验 短时交流电流 大容量实验室 

分 类 号：TM561[电气工程—电器]