IT系统绝缘电阻交流脉冲变频测量
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- 英文论文题名：Alternative Pulses Me asurement with Variable Frequencies for Insulation Resistor in Unearthed System
- 论文作者：李鹏飞 ; 钱伟康 ; 张金燕
- 英文论文作者：Li Pengfei ; Qian Weikang ; Zhang Jinyan ; School of Electrical Engineering ; Shanghai ; Science and Technology University
- 年：2016
- 作者机构：上海理工大学光电信息与计算机工程学院;
- 论文关键词：IT系统 ; 绝缘监测 ; 交流脉冲 ; 变频测量
- 英文论文关键词：unearthed system ; insulation monitoring ; alternative pulse ; measurement with variable frequencies
- 会议召开时间：2016-07-28
- 会议录名称：第二十七届全国振动与噪声应用学术会议论文集
- 语种：中文
- 分类号：R197.39
- 学会代码：ZDZD
- 会议名称：第二十七届全国振动与噪声应用学术会议
- 会议地点：中国黑龙江哈尔滨
- 主办单位：中国振动工程学会振动与噪声控制专业委员会
- 学会名称：中国振动工程学会振动与噪声控制专业委员会
- 页数：6
- 文件大小：659k
- 原文格式：D
- 会议级别：全国
摘要
在特殊的医疗场所为保证供电的连续性和降低故障漏电流,必须采用IT系统供电。针对现有IT系统绝缘电阻测量方法精度不高,控制结构复杂的特点,提出了一种新的绝缘电阻交流脉冲变频测量法。通过±12V脉冲电压的注入,在分析测量原理的基础上,阐述了绝缘测量的硬件设计和变频测量的算法实现。对测量电阻两端的压降和信号调理电路进行PSpise仿真,并对样机进行检测证明,绝缘电阻测量误差控制在5%以内,符合预期的目标。
Power supply with unearthed system is applied in special medical facilities in order to provide continuous electric source and reduce leakage current of fault. A new way, alternative pulses with variable frequencies, to measure insulation resistor is presented, while traditional methods are either low accuracy or with complicated control systems. The hardware design of insulation measurement and program to fulfill method with variable frequencies are discussed in the paper, after description of measurement rules based on alternative pulses with plus and minus 12 V. The software PSpice is supposed to simulate both voltage-drop of insulation resistor and signal conditioning circuits. After sample verification of insulation resistor, measurement tolerance of insulation resistor is within 5% and meet previous measurement expectations.
Power supply with unearthed system is applied in special medical facilities in order to provide continuous electric source and reduce leakage current of fault. A new way, alternative pulses with variable frequencies, to measure insulation resistor is presented, while traditional methods are either low accuracy or with complicated control systems. The hardware design of insulation measurement and program to fulfill method with variable frequencies are discussed in the paper, after description of measurement rules based on alternative pulses with plus and minus 12 V. The software PSpice is supposed to simulate both voltage-drop of insulation resistor and signal conditioning circuits. After sample verification of insulation resistor, measurement tolerance of insulation resistor is within 5% and meet previous measurement expectations.
引文
[1]IEC 60364-7-710,Electrical installations of buildings Part 7-710:Requirements for special installations or locations Medical locations.1st Edition,November 1,2002.
[2]苏义鑫,刘林伟.平衡电阻法监测直流系统绝缘.电力系统自动化.2003,7(Vol.27,No.14),65-66;
[3]周军,朱博楠,杨圣强,王鹏.基于动态差值法的直流系统绝缘监测技术.电工技术学报,2015,1(Vol.30,No.1),235-236;
[4]张宽,杜会陵.谈医疗IT系统的供电与接地设计[J].智能建筑电气技术,2010,4(1):13-18.
[5]鲍谚,姜久春,张维戈,王嘉悦,温家鹏.新型直流系统绝缘在线监测方法.2011.2(Vol.37,No.2),333-337
[2]苏义鑫,刘林伟.平衡电阻法监测直流系统绝缘.电力系统自动化.2003,7(Vol.27,No.14),65-66;
[3]周军,朱博楠,杨圣强,王鹏.基于动态差值法的直流系统绝缘监测技术.电工技术学报,2015,1(Vol.30,No.1),235-236;
[4]张宽,杜会陵.谈医疗IT系统的供电与接地设计[J].智能建筑电气技术,2010,4(1):13-18.
[5]鲍谚,姜久春,张维戈,王嘉悦,温家鹏.新型直流系统绝缘在线监测方法.2011.2(Vol.37,No.2),333-337