中国科技成果
中國科技成果
중국과기성과
CHINA SCIENCE AND TECHNOLOGY ACHIEVEMENTS
2015年
1期
42-46
,共5页
杨广羽%刘敏%王彦宾%喻文岗%崔佳佳
楊廣羽%劉敏%王彥賓%喻文崗%崔佳佳
양엄우%류민%왕언빈%유문강%최가가
绝缘监测%平衡与不平衡%二极管解耦%接地电阻
絕緣鑑測%平衡與不平衡%二極管解耦%接地電阻
절연감측%평형여불평형%이겁관해우%접지전조
Insulation detection%Balanced and unbalanced%Diode decoupling%Grounded resistance
为了解决二极管解耦方式向单电源负载供电易引起直流电源系统环路导致绝缘监测误告警的不足，对绝缘监测装置平衡与不平衡混合式监测原理进行分析与研究，综述了电源母线及馈电回路监测原理，找出绝缘监测回路误告警原因，并推导出对地电阻计算公式。针对这种单电源负载，提出安全性能更高的直流电源系统改进措施，有效地减少直流电源系统故障引起的直流工程故障停运。
為瞭解決二極管解耦方式嚮單電源負載供電易引起直流電源繫統環路導緻絕緣鑑測誤告警的不足，對絕緣鑑測裝置平衡與不平衡混閤式鑑測原理進行分析與研究，綜述瞭電源母線及饋電迴路鑑測原理，找齣絕緣鑑測迴路誤告警原因，併推導齣對地電阻計算公式。針對這種單電源負載，提齣安全性能更高的直流電源繫統改進措施，有效地減少直流電源繫統故障引起的直流工程故障停運。
위료해결이겁관해우방식향단전원부재공전역인기직류전원계통배로도치절연감측오고경적불족，대절연감측장치평형여불평형혼합식감측원리진행분석여연구，종술료전원모선급궤전회로감측원리，조출절연감측회로오고경원인，병추도출대지전조계산공식。침대저충단전원부재，제출안전성능경고적직류전원계통개진조시，유효지감소직류전원계통고장인기적직류공정고장정운。
Because diode decoupling method of DC power supply to the single power load is easily lead to error alarm of insulation monitoring device, balanced and unbalanced hybrid detection principle of the insulation monitoring device are analyzed and researched, then summarized detection principles for power bus and feed loops, and derived the calculating formula of resistance. It found out the cause of insulation detecting device’s error alarm when it was used in diode loop decoupling method, then put forward the DC power supply system with higher safety performance improvement measures. Outage of these improvement measures effectively decrease caused by DC power system fault.
