|本期目录/Table of Contents|

[1]李军,邓晖,蔡峥嵘,等.低压配电线路剩余电流断路器动作判据的研究*[J].中国安全生产科学技术,2022,18(3):217-223.[doi:10.11731/j.issn.1673-193x.2022.03.033]
 LI Jun,DENG Hui,CAI Zhengrong,et al.Research on operation criterion of residual current circuit breaker for low voltage distribution line[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2022,18(3):217-223.[doi:10.11731/j.issn.1673-193x.2022.03.033]
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低压配电线路剩余电流断路器动作判据的研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
18
期数:
2022年3期
页码:
217-223
栏目:
职业安全卫生管理与技术
出版日期:
2022-03-31

文章信息/Info

Title:
Research on operation criterion of residual current circuit breaker for low voltage distribution line
文章编号:
1673-193X(2022)-03-0217-07
作者:
李军邓晖蔡峥嵘吕干云刘克天
(南京工程学院 电力工程学院,江苏 南京 211100)
Author(s):
LI Jun DENG Hui CAI Zhengrong LYU Ganyun LIU Ketian
(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing Jiangsu 211100,China)
关键词:
误动作三重判据谐波特征活体触电试验人体触电仿真模型
Keywords:
misoperation triple criterion harmonic characteristic living body electric shock test human electric shock simulation model
分类号:
X934
DOI:
10.11731/j.issn.1673-193x.2022.03.033
文献标志码:
A
摘要:
为了改善剩余电流断路器频繁误动作的问题,提出以偶次谐波变化率最小值阈值、工频变化量阈值、剩余电流动作整定值相结合的三重判据。首先,搭建活体触电试验平台,获取活体不同部位的多组触电试验数据,利用S变换提取触电波形谐波特征,并计算出触电时刻偶次谐波变比率最小值阈值和工频变化量阈值。其次,搭建人体触电仿真模型,发现存在相似的触电电流谐波特征规律,与传统的动作整定值相结合建立三重综合判据,并以仿真算例验证判据的可靠性。研究结果表明:所提判据不仅能有效改善剩余电流断路器频繁误动的问题,也能预防人体触电。
Abstract:
In order to improve the problem of frequent misoperation of residual current circuit breaker,a triple criterion combining the minimum value threshold of even harmonic change rate,power frequency change threshold and residual current action setting value was proposed.Firstly,a living body electric shock test platform was built to obtain multiple groups of electric shock test data from different parts of the living body.The harmonic characteristics of electric shock waveform were extracted by S-transform,and the minimum value threshold of even harmonic change ratio and power frequency change threshold at the time of electric shock were calculated.Secondly,a human electric shock simulation model was built,and it was found that there were similar harmonic characteristics of electric shock current.Combined with the traditional action setting value,the triple comprehensive criterion was set up,and the reliability of the criterion was verified by a simulation example.The results showed that the proposed criterion could not only effectively improve the problem of frequent misoperation of residual current circuit breaker,but also prevent the electric shock of human body.

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备注/Memo

备注/Memo:
收稿日期: 2021-05-27
* 基金项目: 江苏省科技副总项目(FZ20200049);江苏省“六大人才高峰”项目(TD-XNY-004)
作者简介: 李军,博士,教授,主要研究方向为微电网及主动配电网运行控制技术。
通信作者: 邓晖,硕士研究生,主要研究方向为漏电保护技术。
更新日期/Last Update: 2022-04-18