电器与能效管理技术 ›› 2021, Vol. 0 ›› Issue (3): 6-7.doi: 10.16628/j.cnki.2095-8188.2021.03.002

• 研究与分析 • 上一篇    下一篇

考虑故障电弧电流高频特征的阻抗电弧模型

高小庆1, 陈晓军2, 鲍光海1   

  1. 1.福州大学 电气工程与自动化学院, 福建 福州 350108
    2.浙江天正电气股份有限公司, 浙江 乐清 325604
  • 收稿日期:2020-12-14 出版日期:2021-03-30 发布日期:2021-04-14
  • 作者简介:高小庆(1992—),男,硕士研究生,研究方向为故障电弧模型及其在线检测技术。|陈晓军(1977—),男,工程师,主要从事低压电器研究与设计。|鲍光海(1977—),男,副教授,研究方向为电器及其系统智能化与故障诊断。
  • 基金资助:
    * 福建省科技计划项目资助(2018H0014)

Impedance Arc Model Considering High-Frequency Characteristics of Fault Arc Current

GAO Xiaoqing1, CHEN Xiaojun2, BAO Guanghai1   

  1. 1. College of Electrical Engineering and Automation,Fuzhou University, Fuzhou 350108, China
    2. Zhejiang Tengen Electric Co.,Ltd., Yueqing 325604, China
  • Received:2020-12-14 Online:2021-03-30 Published:2021-04-14

摘要:

针对传统电弧模型在电弧电流高频特征仿真中具有的局限性,提出了一种考虑电弧电流高频特征的阻抗电弧模型。在电弧电阻的基础上,模型考虑了弧柱电感、弧隙电容以及弧隙两侧的线路参数,将电弧电流看成由低频电流和高频电流两部分组成,分别由低频通路和高频通路产生。通过Simulink仿真和实测波形的对比,验证了阻抗电弧模型的准确性及其在串联故障电弧仿真方面的可行性。

关键词: 串联故障电弧, 阻抗电弧模型, 高频电弧电流, 高频通路, 低频通路

Abstract:

Aiming at the limitations of traditional arc models in the simulation of high-frequency characteristics of arc current,an impedance arc model considering the high-frequency characteristics of arc current was proposed.On the basis of arc resistance,arc column inductance,arc gap capacitance and line parameters on both sides of the arc gap are taken into account in the model.Moreover,the arc current is decomposed into low-frequency current and high-frequency current,which are generated by the low-frequency path and the high-frequency path respectively.Through the comparison of Simulink simulated waveforms and measured waveforms,the accuracy of the impedance arc model and its feasibility in series arc fault simulation are verified.

Key words: series arc faults, impedance arc model, high-frequency arc current, high-frequency path, low-frequency path

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