直流检测式选择性漏电保护系统设计

张柳芳1,2,邹有明1,吴君1(1.,454000;2.,467002):本文设计了一种基于直流电流传感器检测和单片机控制的新型直流检测式选择性漏电保护系统,经过模拟试验表明,该系统各项性能指标均达到了设计要求,效果良好:漏电保护;选择性;直流电流传感器;单片机;直流检测:TD611+.5;TM726:B:1001-0874(2006)02-0021-04ADesignofDCDetectingandSelectiveLeakageProtectionSystemZHANGLiufang1,2,ZOUYouming1,WUJun1(1.HenanUniversityofTechnology,Jiaozuo454000,China;2.PingdingshanUniversity,Pingdingshan467002,China)Abstract:ThispaperdesignsanewkindofDCdetectingandselectiveleakageprotectionsystembasedonDCcurrentsensordetectingandsinglechipmicrocomputercontrolling.Thesimulatedexperimentresultsshowthatallthepropertyindexesofthesystemreachthedesignrequirementsandachievegoodresults.Keywords:leakageprotection;selectivity;DCcurrentsensor;singlechipmicrocomputer;DCdetecting1,;,[1],,2660V,1LDCSLDCSi(i=1~7),,,0~5V,[2]LKCF100,,,,(1):+24V,SKLKR,Wi(i=1,,7),LDCSLDCSiUUi,A/D,,,QAi,,,(200ms),U,,QA,QA,LDCSU,QA(2):+24V,rLDCS!21!20062SKLKR1Wi(i=1,,7):+24V,WiriWiLDCSiSKiQAiR(1.2K)QA,,LDCS,,QA;,QAQA,QAi(i=1,,7),Wi,,QAi;QAi(3)127VZJi1ZJi2(i=0,1,,7,0)ZJi1,ZJi2(4)LKR0SB1,SB(1),SB(2),(5)Ri=1k(i=0,1,,7)SBi,SBi,i1k,;,3(1)P89C51RC+,22CPU:P89C51RC+I/O8155X25045P89C51RC+A/D,,;8155I/O!22!20062,,;,,,,,(2),,:1),I/O81552),,;,,,3)W1~W7CPU,,CPU,,,200ms,,CPU4)CPUW1~W7,,,,,;,,5)4,660V,,,::,,,,,,12,8,525,5,,1()C0(W0)(F)0.250.250.25C1(W1,W3,W5)(F)0.200.250.10C2(W4)(F)0.250.100.20C3(W2,W6,W7)(F)0.100.250.25r(k)∀∀∀2()(ms)QA1859075QA2908085QA3858595QA4708080QA5758590QA6809085QA77585855,,(26)!23!20062(),4KJJ23,,,,KJF42TCP/IPKJJ23,IPIP(COM82~COM84),115,,,,,,:[1],,,,.[J].,2005(1)[2],,.[J].,2003(7):(1977-),女,讲师,在读博士研究生2002年毕业于郑州大学,现任教于中国矿大信息与电气工程学院,从事图像视频处理识别和传输等方面研究,发表文章7篇(:2005-09-27;:)(23),,;,,,,:[1],.[M].:,1997[2],.[J].,2003(2):(1974-),女,讲师主要从事电气安全和智能电气控制方面的教学和科研工作(:2005-11-28;:)!26!20062