|本期目录/Table of Contents|

[1]高彦,魏可可,霍耀佳,等.具有变频器的矿井低压漏电保护研究[J].中国安全生产科学技术,2019,15(6):127-132.[doi:10.11731/j.issn.1673-193x.2019.06.020]
　GAO Yan,WEI Keke,HUO Yaojia,et al.Research on mine lowvoltage electric leakage protection with frequency converter[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(6):127-132.[doi:10.11731/j.issn.1673-193x.2019.06.020]
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具有变频器的矿井低压漏电保护研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年6期
页码:
127-132
栏目:
职业安全卫生管理与技术
出版日期:
2019-06-30

文章信息/Info

Title:
Research on mine lowvoltage electric leakage protection with frequency converter
文章编号:
1673-193X(2019)-06-0127-06
作者:
高彦; 魏可可; 霍耀佳; 袁鑫铭; 王彦文
（中国矿业大学（北京） 机电与信息工程学院，北京 100083）
Author(s):
GAO Yan;  WEI Keke;  HUO Yaojia;  YUAN Xinming;  WANG Yanwen
(School of Mechanical Electronic & Information Engineering, China University of Mining & Technology, Beijing, Beijing 100083, China)
关键词:
变频器; 矿井供电; 附加直流; 傅式算法; 漏电保护
Keywords:
frequency converter;  mine power supply;  additional DC;  Fourier algorithm;  electric leakage protection
分类号:
X936;TD611
DOI:
10.11731/j.issn.1673-193x.2019.06.020
文献标志码:
A
摘要:
为了解决移动变电站低压侧为变频器供电时漏电保护装置误动的问题，提出了基于傅式算法的附加直流原理漏电保护新方法。通过理论分析和MATLAB/Simulink仿真，研究了具有变频器的矿井低压供电系统附加直流原理漏电保护，提出由傅式算法分解出采样电压直流分量以反映电缆绝缘水平的保护方法；同时分析了其他因素对直流分量的影响。研究结果表明：变频器对传统附加直流保护整定值有较大影响，易造成漏电保护装置误动且无法实现电缆的在线绝缘监测；所提出的直流分量法能准确测量电缆对地绝缘电阻，且可消除电缆分布电容、变频器载波频率、变频器输出频率等其他因素的干扰；采用该漏电保护方法，可承受变频器投入时对采样电压造成的较大冲击，不必在启动期间解除漏电保护装置，能够消除在此期间存在的人身触电安全隐患。
Abstract:
In order to solve the problem of the malfunction of electric leakage protection device when the lowvoltage side of mobile substation provides power to the frequency converter, a new method of electric leakage protection with additional DC principle based on the Fourier algorithm was proposed. Through the theoretical analysis and MATLAB/Simulink simulation, the electric leakage protection of additional DC principle for the mine lowvoltage power supply system containing the frequency converter was studied, and a protection method for decomposing the DC component of sampling voltage by the Fourier algorithm to reflect the insulation level of cable was proposed. At the same time, the influence of other factors on the DC component was analyzed. The results showed that the frequency converter had greater influence on the setting value of traditional additional DC protection, which was easy to cause the malfunction of electric leakage protection device, and the online insulation monitoring of cable could not be realized. The cabletoground insulation resistance could be accurately measured by the proposed DC component method, and it would not be interfered by other factors such as cable distribution capacitance, carrier frequency of frequency converter, output frequency of frequency converter, etc. The large shock on the sampling voltage when the frequency converter is put into operation can be borne by using this electric leakage protection method, and it is not necessary to remove the electric leakage protection device during the startup period, so that the safety hazard of personal electric shock existing in this period can be eliminated.

参考文献/References:

［1］翟小龙.变频器控制技术在煤矿机电设备中的应用［J］.机械管理开发,2018,33(1):79-80. ZHAI Xiaolong. Application of frequency converter control technology in mechanical and electrical equipment of coal mine［J］. Mechanical Management and Development, 2018, 33(1):79-80.
［2］彭红玲.矿用变频器漏电保护分析［J］.煤矿机电, 2017(1):81-84. PENG Hongling. Analysis of leakage protection for frequency converter in coal mine［J］. Colliery Mechanical and Electrical Technology, 2017(1):81-84.
［3］胡宏秋.变频系统漏电分析与研究［J］.电气传动, 2013, 43(8): 13-15，37. HU Hongqiu. Analysis and research of leakage in frequency conversion system ［J］. Electric Drive, 2013, 43(8): 13-15，37.
［4］国家安全生产监督管理总局.煤矿安全规程［M］. 北京:煤炭工业出版社, 2016.
［5］李海洪,王大伟,范征.变频器引起井下漏电保护系统误动的解决方案［J］.煤矿安全,2014,45(9):120-122. LI Haihong, WANG Dawei, FAN Zheng. Solution for error power-off of underground leakage protection system caused by mine-used frequency converter ［J］. Safety in Coal Mines, 2014, 45(9): 120-122.
［6］王彦文,高彦. 煤矿供电技术［M］. 徐州:中国矿业大学出版社, 2013:230-232.
［7］翟善河,周天良.矿用馈电开关漏电保护动作值的合理整定［J］.电气开关,2011,49(6):77-78,80. ZHAI Shanhe, ZHOU Tianliang. Reasonable setting of the leakage protection actuating value of feeder switches for mine［J］. Electric Switchgear, 2011,49(6):77-78,80.
［8］李思光. 矿用智能化组合开关测控保护系统的研究［D］.青岛：山东科技大学,2008.
［9］李科. 矿井电网新型漏电保护研究［D］.西安：西安科技大学,2016.
［10］杨奇逊,黄少峰. 微型机继电保护基础［M］. 北京:中国电力出版社, 2013:89-92.
［11］徐国强.基于仿真模型的矿井附加直流电源漏电保护研究［J］.山西焦煤科技,2008(11):1-3. XU Guoqiang. The research for additive direct current power electric leakage protection in the coal mine based on simulation model［J］. Shanxi Coking Coal Science and Technology, 2008(11):1-3.
［12］高彦,宋立冬,杜一锋,等. 基于PLM的矿用低压变频器漏电机理的研究［J］.中国安全生产科学技术, 2016,12(10): 130-135. GAO Yan, SONG Lidong, DU Yifeng, et al. Research on electric leakage mechanism of low voltage frequency converter for mining based on PLM ［J］. Journal of Safety Science and Technology, 2016, 12(10): 130-135.
［13］贾建新.零序电抗器的测试与分析［J］.东北煤炭技术,1997(3):52-55. JIA Jianxin. Analysis and test on zero phase-sequence reactor［J］. Coal Technology of Northeast China, 1997(3):52-55.
［14］王彦文.快速断电安全技术［M］.北京:煤炭工业出版社,1996:41-44.
［15］雷煌.煤矿井下电网分布电容补偿技术研究［J］.煤矿机械,2004(12):9-11. LEI Huang. Research of autocompensate technology about distributed capacity of electrical wire in coal mine［J］. Coal Mine Machinery, 2004(12):9-11.

相似文献/References:

[1]高彦,宋立冬,杜一锋,等.基于PLM的矿用低压变频器漏电机理的研究[J].中国安全生产科学技术,2016,12(10):130.[doi:10.11731/j.issn.1673-193x.2016.10.022]
　GAO Yan,SONG Lidong,DU Yifeng,et al.Research on electric leakage mechanism of low voltagefrequency converter for mining based on PLM[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(6):130.[doi:10.11731/j.issn.1673-193x.2016.10.022]

备注/Memo

备注/Memo:
收稿日期： 2019-03-25；数字出版日期： 2019-06-28
* 基金项目： 国家自然科学基金项目(51604279)
作者简介： 高彦 ，博士，讲师,主要研究方向为矿井电气安全。
更新日期/Last Update: 2019-07-09