ZW3212F户外高压智能分界真空断路器剖析.docx
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ZW3212F户外高压智能分界真空断路器剖析
浙江恒控电气有限公司
ZhejiangHengkongElectricCo.Ltd.
1、概述Almost
ZW32-12F型户外交流高压真空分界断路器(以下简称分界断路器)是我公司自主研发的一款新型产品,分界断路器是集真空断路器、分界断路器、分段器四大开关于一体的多功能智能化装置产品,主要配置由真空分界断路器本体、看门狗控制器、外置电压互感器(注:
配网自动化环网线路中可选双侧PT)三大部分组成,产品广泛用于10kV城市、农村配电网架空环网线路中作分段隔离开关联络开关、可实行环网线路负荷调配的自动化开关装置,在大用户供电的分支线路中可作为分界开关(俗称看门狗),馈线架空配电网络作分界断路器分段器之用,真空分界断路器具有远程管理模式,保护控制功能及通讯功能。
能可靠判断、检测界内毫安级零序电流及相间短路故障电流,实现自动切除单相接地故障和相间短路故障。
本安装使用说明书规定了分界断路器的引用标准、使用环境条件、型号和额定参数、结构特点、工作原理、订货须知、以及操作、安装、使用、维护的方法等内容。
ZW32-12FtypeofoutdoorAChighvoltagevacuumcircuitbreaker(hereinafterreferredtoastheboundarydemarcationcircuitbreaker)ismycompanydevelopedanewproduct,theboundarybreakerisasetofvacuumcircuitbreaker,circuitbreaker,sectionalizersboundaryfouropenintelligentmultifunctiondeviceononeofthemainproducts,configuredbythevacuumdemarcationcircuitbreakerbody,thewatchdogcontroller,anexternalvoltagetransformer(Note:
distributionautomationlineringnetworkinbilateralPToptionalthreeparts),theproductsarewidelyusedinautomaticswitchingdeviceof10kVCity,ruralpowergridspaceringcircuitaspiecewiseisolatingswitchcontactswitch,canbeimplementedringdistributionlineload,thebranchlineusersthepowersupplycanbeusedascut-offswitch(commonlyknownasthewatchdog),overheaddistributionnetworkfeederfordividingcircuitbreakerssectionalizerforvacuumcircuitbreakerwithremotedemarcation,managementmode,protectioncontrolfunctionandcommunicationfunction.Reliablejudgmentanddetectionlimitsofmilliampereszerosequencecurrentandthephasetophaseshortcircuitfaultcurrentandcanautomaticallyremovesingle-phasegroundingfaultandphasetophaseshortcircuitfault.
Theinstallationinstructionsforuseprovisionsofthedemarcationcircuitbreakerofthereferencestandard,theuseofenvironmentalconditions,typeandratedparameters,structurefeatures,workingprinciple,ordernotes,andtheoperation,installation,use,maintenancemethodandcontent.
2、分界断路器的功能Functionofdividingcircuitbreaker
自动切除单相接地故障,当用户支线发生单相接地故障时,分界断路器自动分闸,变电站及馈线上的其它分支用户感受不到故障的发生。
自动隔离相间短路故障,当用户支线发生相间短路故障时,分界断路器先于变电站出线保护开关跳闸,自动隔离故障线路,不会波及馈线上的其它分支用户停电。
快速定位故障点,当用户支线故障造成分界断路器保护动作后,仅责任用户停电,由其主动报送故障信息,电力公司可迅速派员到场排查;分界断路器如配有通信模块,则动将信息报送到电力管理中心。
监控用户负荷,当分界断路器可配置有线或无线通信附件,将监测数据传送到电力管理中心,实现对用户负荷的远方实时数据监控。
远方操作功能,用户可以通过手机短信或计算机后台方式操作真空分界断路器分闸。
Automaticsinglephasetoearthfault,whentheusersideofasinglephasetogroundfaultoccurs,thecut-offcircuitbreakerautomaticallygate,substationandotherbranchesonthefeedercannotfeeltheoccurrenceoffailure.Automaticisolationfaultphase,whentheinterphaseshortcircuitfaultoccursintheuserbranchanddemarcationcircuitbreakerbeforesubstationoutletprotectiontrippingofthecircuitbreaker,automaticisolationfaultline,willnotspreadtothefeederoftheotherbranchesofpowerusers.Locatethefaultpointquickly,whenthefailureofthesubscriberlineofdemarcationcircuitbreakerprotectionactioncausedbythe,onlyresponsibilitypowerusers,theinitiativetosubmitfaultinformation,powercompaniescanbequicklysenttothesceneinvestigation;demarcationcircuitbreakerifequippedwithcommunicationmodule,dynamicreporttheinformationtothepowercontrolcenter.Monitoruserload,whentheinterfacecircuitbreakercanbeconfiguredwiredorwirelesscommunicationaccessories,themonitoringdataistransmittedtothepowermanagementcentertorealizetheremotereal-timedatamonitoringofuserload.Remoteoperationfunction,theusercanoperatethevacuumdemarcationcircuitbreakerthroughthemobilephoneshortmessageorthecomputerbackgroundmode.
三、使用的环境条件Useenvironmentalconditions
1)海拔高度:
≤2000米
2)环境温度:
户外-30℃~+55℃
最高年平均气温20℃
最高日平均气温30℃
3)相对湿度:
95%(25℃)
4)抗震能力:
地面水平加速度0.3g
地面垂直加速度0.15g
5)地震烈度:
7度
6)最大日温差:
25℃
7)日照强度(风速0.5m/s时):
0.1W/cm2
8)最大风速:
34m/s
9)最大覆冰厚度:
10mm
10)安装位置:
户外、10kV架空线路用户责任分界点处
11)接地方式:
中性点不接地、经消弧线圈接地及低电阻接地。
1):
lessthan2000metersaltitude
2)environmentaltemperature:
outdoor-30~+55
Maximumannualaveragetemperatureof20
Maximumdailymeantemperatureof30
3)relativehumidity:
95%(25)
4)seismiccapacity:
groundhorizontalacceleration0.3g
Groundverticalacceleration0.15g
5)earthquakeintensity:
7degrees
6)maximumdailytemperaturedifference:
25
7)sunshineintensity(0.5m/s):
0.1W/cm2
8)maximumwindspeed:
34m/s
9)maximumicethickness:
10mm
10)installationlocation:
outdoor,10kVoverheadlineuserresponsibilityboundarypoint
11)groundingmethod:
neutralpointisnotgrounded,thearcsuppressioncoilgroundingandlowresistancegrounding.
4、产品型号及含义Productmodelandmeaning
Z---------真空断路器Vacuumcircuitbreaker
W---------户外Outdoor
32---------设计序号Designserialnumber
12---------额定电压(KV)Ratedvoltage(KV)
F---------智能分界型Intelligentdividingline
G---------隔离刀闸(不带可省略)Isolatedknifegate(withoutthebeltcanbeomitted)
T---------弹簧操作机构Springoperatingmechanism
□---------额定电流(A)Ratedcurrent(A)
□---------额定短路开断电流(A)Ratedshort-circuitbreakingcurrent(A)
5、产品结构Productstructure
分界断路器在ZW32-12型真空断路器基础上进行了优化改进(详见ZW32-12户外高压真空断路器使用说明书)和外置电压互感器及智能控制器组成,通过全密封防水型航空接插件和户外密封电缆进行电气连接。
分界断路器采用专用的弹簧操动机构(或永磁机构),具备手、电动储能,手、电动合闸,手、电动分闸功能。
分界断路器外置3只单相CT,变比600/5(或用户指定的变比),分界断路器采用外置式PT,装于电源侧,变比10000V/220V,控制器和断路器的操作电源和电压信号均由PT提供。
DemarcationcircuitbreakerintheZW32-12typevacuumcircuitbreakerbasedonoptimized(seeZW32-12outdoorhighvoltagevacuumcircuitbreakeroperationinstruction)andexternalvoltagetransformerandintelligentcontroller,throughfullysealedwaterprooftypeaviationconnectorandsealingcableelectricalconnection.Demarcationcircuitbreakerwithactuator(orpermanentmagnetismmechanismoperatinginspecialspring),withmanualandelectricenergystorage,manualandelectricswitching,hands,electricgatefunction.Demarcationcircuitbreakerexternalthreesingle-phaseCTandratio600/5(oruserspecifiedratio),thedemarcationcircuitbreakerusingexternalPt,mountedonthesideofthepowersupply,variable10000V/220V,thecontrollerandthecircuitbreakeroperatingpowersupplyandvoltagesignalsarebyPtprovide.
六、主要技术参数Maintechnicalparameters
6.1断路器主要技术参数Maintechnicalparametersofcircuitbreaker
6.1.1主要技术参数Maintechnicalparameters
(1)额定电压12kV
(2)1min工频干试42/48(断口)kV
湿试34kV
(3)雷电冲击耐压(峰值)75/85(断口)kV
(4)额定电流630/1250(A)
(5)额定短路开断电流16/20/25(kA)
(6)额定操作顺序(弹簧操作机构)分-0.3s-合分-6s-合分-6s-合分-6s-合分
(7)额定短路开断电流次数30次
(8)额定短路关合电流(峰值)50kA
(9)额定峰值耐受电流50kA
(10)额定短时耐受电流16/20/25kA
(11)机械寿命10000次
(12)额定操作电压及辅助回路额定电压AC220V
(1)Ratedvoltage12kV
(2)1minpowerfrequencydrytest42/48(fracture)kV
Wettest34kV
(3)Lightningimpulsewithstandvoltage(peak)75/85(fracture)kV
(4)Ratedcurrent630/1250(A)
(5)Ratedshort-circuitbreakingcurrent16/20/25(kA)
(6)Ratedoperatingorder(springoperatingmechanism)-0.3s-and-6s-composite-6s-and-6s-
(7)Ratedshort-circuitbreakingcurrent30times
(8)Ratedshortcircuitclosingcurrent(peak)50kA
(9)Ratedpeakwithstandcurrent50kA
(10)Ratedshort-timewithstandcurrent16/20/25kA
(11)Mechanicallife10000times
(12)RatedoperatingvoltageandauxiliarycircuitratedvoltageAC220V
6.1.2分界断路器装配调整后达到的数据
Datathatisreachedaftertheassemblyofthedividingcircuitbreaker
(1)触头开距9±1mm
(2)触头超额行程2.5±0.5mm
(3)平均分闸速度1.2±0.3m/s
(4)平均合闸速度0.6±0.2m/s
(5)触头合闸弹跳时间≤2ms
(6)三相分闸同期性≤2ms
(7)重量外置PT:
165kg
(1)thecontactdistanceis9+1mm
(2)theexcesstravelofthecontactis2.5+0.5mm
(3)theaveragebrakespeedof1.2+0.3m/s
(4)theaverageclosingspeedof0.6+0.2m/s
(5)contactbouncetimeLessthan2ms
(6)thethree-phasetrippingperiodofLessthan2ms
(7)kgExternalPT:
165
7.看门狗控制器Watchdogcontroller
7.1概述Summary
⏹“看门狗”控制器中压架空线电网的监控单元,与柱上开关配合实现遥控及自动化管理。
监控单元接近开关安装,适用于35kV及以下户外开关设备。
⏹The"watchdog"controllermediumvoltageoverheadlinegridmonitoringunit,withacolumnswitchingwiththerealizationofremotecontrolandautomationmanagement.Themonitoringunitisclosetotheswitch,andissuitablefor35kVandthefollowingoutdoorswitchgear.
⏹“看门狗”控制器是集线路保护、控制、测量以及信号监视于一体的综合自动化户外测控装置。
适用于各种中压电网(不接地电网、经电阻接地、经消弧线圈接地、直接接地电网),具备处理单条架空线开关远程操作的全部功能。
⏹The"watchdog"controllerisanintegratedautomaticoutdoormonitoringdevicewhichisacollectionoflineprotection,control,measurementandsignalmonitoring.Applicabletoallkindsofmediumvoltagepowergrid(notgroundinggrid,viaresistancegrounding,arcsuppressioncoilgrounding,directlyconnectedtothegrid),dealingwithasingleoverheadlineswitchallthefunctionsoftheremoteoperation.
☐开关的本地控制
☐遥控功能(带手持遥控器)
☐线路故障检测
☐接地故障检测
☐线路保护功能
☐自动重合闸
☐GSM短信息远程操作(选配)
☐带过电压保护功能,当电压过高时,开关自动跳闸。
☐过流,速断保护功能
☐Overcurrent,fastbreakingprotection
☐Localcontrolofswitches
☐Remotecontrolfunction(withahand-heldremotecontroller)
☐Linefaultdetection
☐Groundfaultdetection
☐Lineprotectionfunction
☐Automaticcoincidencegate
☐GSMshortinformationremoteoperation(optional)
☐Withovervoltageprotectionfunction,whenthevoltageishigh,automaticswitch.
7.2特点Characteristic
⏹高度集成Highlyintegrated
☐一个简单的设备集成了控制、监视、信号、通信、测量、事件记录、故障判断、保护、分段自动化等多种功能,性价比高;
☐执行和操作机构简单,人性化设计。
☐Asimpledeviceintegratedcontrol,monitoring,signal,communication,measurement,eventrecording,faultdiagnosis,protection,segmentationandotherfunctions,cost-effective;
☐Executiveandoperatingmechanismissimple,user-friendlydesign.
⏹操作简单、直观Simpleoperation,intuitive
☐操作面板垂直向下安装,配有若干彩色LED指示,用户可于杆下目测观察,能直观反映设备当前运行信