Research on Calculation of Slope at Current Zero-crossing

YAN Duifeng; WANG An; NIU An; PENG Jianfei; ZHANG Baoqiang; YANG Tingfa

doi:10.13296/j.1001-1609.hva.2015.04.010

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Research on Calculation of Slope at Current Zero-crossing

更新时间：2025-04-26

- Research on Calculation of Slope at Current Zero-crossing
- High VoltageApparatus Vol. 51, Issue 4, Pages: 51-55(2015)
- 作者机构：
  
  西安高压电器研究院有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.04.010
  CLC： TM561
- Published：2015
- 稿件说明：
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[1]阎对丰,王安,牛安,彭剑飞,张宝强,杨庭发.关于电流过零点斜率计算方法的研究[J].高压电器,2015,51(04):51-55.

YAN Duifeng, WANG An, NIU An, et al. Research on Calculation of Slope at Current Zero-crossing[J]. High voltageapparatus, 2015, 51(4): 51-55.
[1]阎对丰,王安,牛安,彭剑飞,张宝强,杨庭发.关于电流过零点斜率计算方法的研究[J].高压电器,2015,51(04):51-55. DOI： 10.13296/j.1001-1609.hva.2015.04.010.

YAN Duifeng, WANG An, NIU An, et al. Research on Calculation of Slope at Current Zero-crossing[J]. High voltageapparatus, 2015, 51(4): 51-55. DOI： 10.13296/j.1001-1609.hva.2015.04.010.

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。

Abstract

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.

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