10kv配电线路雷击断线的机理与防护

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1、MECHANISMOFLIGHTNING．CAUSEDBREAKINGOF10kVoVERHEADDISTIUBUTIoNLINESANDPREVENTINGINVESTIGATIONABSTRACT晰t11thegreatpromotionofoverheadinsulatedlineindistributionnet，butlighting—causedbreakingremainsaseriousthreattothenormaloperationofpowernetwork．Theaccidentsoflighting-c

2、ausedbreakingstilloccurfrequently,seriousimpactonpeople’Slivesandproduction，causehugeeconomiclosses，evenaseriousthreattopersonalsafety．Duetothehugeoflinelengthandcomplexityofnetworkindistributionnet，itbringsamajorchallegetothevariousequipmentsandprogramsofpreventlight

3、ning—causedbreaking．Thisarticlediscussestheadvantagesanddisadvantagesofoverheadinsulatedline，andfindthemainreasonandmechanismfromtheinstancescausedbylightningbreaking，anddiscusstheadvantagesanddisadvantagesofprogramsandtechnologywhichareusedtosolvelightningbreaking．th

4、roughMATLABsimulationsandlaboratoryexperiments，andexploretheprograms’Sfeasibilityofpreventinglightningbreakingusingtheequipmentofthearchornwhichisusedtoextinguisharcwithsprayedmixturegas，andillustratethefeasibilityofthisprogramintheactualoperatinglinesKEYWORDS：overhea

5、dinsulatedlineparallelgapmechanismoflightningbreakarchornwithsprayedmixturegasⅡ目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯IABSTl认CT⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯II第一章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1课题研究背景⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．11．2本论文主要工作⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯l第二章架空绝缘导线事故案例⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯22．1架空绝缘导线雷击断线事故案例

6、分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯22．1．1上海城区配电线路雷击情况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．22．1．2福建省莆田城镇lOkV配电线路雷击情况⋯⋯⋯⋯⋯⋯⋯⋯⋯．．32．1．3江苏省南通市lOkV配电线路雷击断线情况⋯⋯⋯⋯⋯⋯⋯⋯⋯42．2架空绝缘导线雷击断线原因总结⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．62．2．1IOKV架空绝缘导线受雷类型⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．62．2．2电弧电流与产热⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．62．2．3架空绝缘导线雷击断线机理⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯10第三章喷射混合气体灭弧防雷间隙⋯⋯⋯⋯⋯⋯⋯

7、⋯⋯⋯⋯⋯⋯133．1普通并联保护间隙⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯133．1．1普通并联保护间隙历史和现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．133．1．2普通并联保护间隙的优越性⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯143．1．3普通并联保护间隙在推广中所遇到的问题⋯⋯⋯⋯⋯⋯⋯⋯．．143．2并联间隙间交流电弧的理论和动态模型⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯153．2．1交流电弧电流过零的现象⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．153．2．2交流电弧的熄灭和重燃理论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯153．2．3喷射混合气体灭弧防雷间隙的灭弧原理⋯⋯⋯⋯⋯⋯⋯⋯⋯．

8、．163．2．4麦也尔电弧模型及其参数推算⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．173．2．5喷射混合气体灭弧防雷间隙灭弧仿真⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．183．3喷射混合气体灭弧防雷间隙试验⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯203．3．1喷射混合气体灭弧防雷间隙结构⋯⋯⋯