预览加载中，请您耐心等待几秒...

10kV配网中性点经小电阻接地技术的应用.docx

预览
1/3
2/3
3/3

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

10kV配网中性点经小电阻接地技术的应用 Title:ApplicationofSmallResistanceGroundingTechniquein10kVDistributionNetworkNeutralPoint Abstract: Thesmallresistancegroundingtechniqueplaysacrucialroleinthe10kVdistributionnetworkneutralpoint.Thistechniquehelpstostabilizetheelectricaldistributionsystemandmitigatefaultscausedbyearthfaultsinthenetwork.Thispaperaimstodiscusstheapplicationofsmallresistancegroundingtechniquein10kVdistributionnetworkneutralpointsanditsbenefits.Thepaperalsoanalyzesthechallengesassociatedwithimplementingthistechniqueandexplorespotentialsolutionsthatcanenhancetheeffectivenessofsmallresistancegrounding. 1.Introduction Theneutralpointina10kVdistributionnetworkisacriticalpointthatconnectsthepowersupplysystemtoconsumers.Itactsasareferencepointforthedistributionnetworkandneedstobegroundedeffectively.Traditionalsolidgroundingoffersalow-costsolutionbutissusceptibletogroundfaultsandpotentialdamagetoequipment.Thesmallresistancegroundingtechniqueoffersabettersolutionbyintroducingaresistancebetweentheneutralpointandtheearth,reducingtheriskoffaultsandimprovingthepowerdistributionsystem'soverallstability. 2.BenefitsofSmallResistanceGrounding 2.1FaultCurrentLimitation Thesmallresistancegroundingtechniquelimitsthefaultcurrentmagnitudeduringanearthfault.Byreducingthefaultcurrent,theriskofequipmentdamageandpossibleelectricshockhazardscanbeminimized.Italsohelpstoidentifythefaultysectionquickly,enablingfasterfaultlocationandpromptrepairs. 2.2TransientOvervoltagesMitigation Duringanearthfault,transientovervoltagesmayoccurandaffectthesystem'sperformance.Smallresistancegroundinghelpstoreducetransientovervoltages,protectingsensitiveequipmentandpreservingthenetwork'soperationalefficiency. 2.3StableVoltageLevels Smallresistancegroundingmaintainsstablevoltagelevelsinthedistributionnetwork,preventingvoltagefluctuationsandensuringconsistentpowersupplytoconsumers.Thisstabilityimprovestheoverallreliabilityandperformanceofthenetwork. 3.ChallengesinImplementingSmallResistanceGrounding 3.1ProperSizing