3500/25 149369-01
BENTLYNEVADA3500/25149369-01配电网中常用的无功补偿方式为:在系统的部分变、配电所中,在各个用户中安装无功补偿装置;在高低压配电线路中分散安装并联电容机组;在配电变压器低压侧和车间配电屏间安装并联电容器以及在单台电动机附近安装并联电容器,进行集中或分散的就地补偿。1、就地补偿对于大型电机或者大功率用电设备宜装设就地补偿装置。就地补偿是***经济、***简单以及******的补偿方式。在就地补偿方式中,把电容器直接接在用电设备上,中间只加串熔断器保护,用电设备投入时电容器跟着一起投入,切除时一块切除,实现了***方便的无功自动补偿,切除时用电设备的线圈就是电容器的放电线圈。2、分散补偿当各用户终端距主变较远时,宜在供电末端装设分散补偿装置,结合用户端的低压补偿,可以使线损大大降低,同时可以兼顾提升末端电压的作用。3、集中补偿变电站内的无功补偿,主要是补偿主变对无功容量的需求,结合考虑供电压区内的无功潮流及配电线路和用户的无功补偿水平来确定无功补偿容量。35KV变电站一般按主变容量的10%-15%来确定;110KV变电站可按15%-20%来确定。4、调容方式的选择(1)长期变动的负荷对于建站初期负荷较小,以后负荷逐渐增大的情况,组装设无载可调容电容器组。户外安装时可选用可调容集合式电容器;户内安装时可选用可调容柜式电容器装置。其基本原理为将电容器按二进制方式分成二组,通过分接开关或隔离开关选择投切组合,可以实现三档容量可调。随着负荷的改变,可以人工断电后改变投切组合满足某一时间段的无功平衡。这种场合可以装设无功自动调容装置,该装置可以满足无人值守综合自动化的要求。(3)短时段内负荷频繁变化的场合该场合宜装可快速跟踪的瞬态无功补偿装置。由于电容器每次投切前却必须保证电容器没有残存的电荷,而电容器放电即使通过放电线圈亦需要数秒的时间,所以高压瞬态无功补偿装置(也称SVC)一般都是固定补偿***大容量的电容器,同时并联一组容量可调的电抗器,通过快速调整电抗器的输出无功,从而达到无功瞬态平衡的目的。电抗器的调整技术主要有可控硅控制空心并联电抗器及直流偏磁调感两种方式,其中以前者较优,但价格较高。ABBF4S3200MEGAMAXSACE-F43200A690V,PR1/PLSIGTrip,CtrlPR1/CF4S3200AmpITEImperialK42004200Amp600VAirBreakerAC-PROTripM/OD/OLSABBADVAC2000Amp15KVAA3J2777XX000UPvacuumcircuitbreakerANSI2005ABBKP-40KP404000Amp4000AAirBreakerMPS-C2000ABBADVAC1200Amp15KVAA3J177700000UPvacuumcircuitbreakerANSI2005ABB15KVAdvacPanelVacuumCircuitBreakerCellMediumVoltageDPUPTcompleteABB15KVAdvacCellVacuumCircuitBreakerPanelMetal-CladAdvancePTcompleteABB15KVAdvacPanelCellVacuumBreakerMediumVoltageSafeGearw/PTcompleteABB15kVAdvacPanelCellVacuumCircuitBreakerMediumVoltage15kVcompleteBrownBoveri1200Amp15KVModel03-CVacuumCircuitBreakerITEPowerBreakerABBADVAC15kV1200AAA251777000000PVacuumCircuitBreaker5cyc15kV1200AmpITECircuitBreakerTypeLG3000AmpASiemensRMSTripBBCLK-252500ABreakerwLSGSolidStateTripDeviceLSS4611250-T24GouldABBITEGOULDBBCABBK3000K30003000AAirBreakerLSITEBreakerTypeLG3000AmpASiemensRMSTrip600VABBADVAC5kV1200AmpAA211777000000PVacuumCircuitBreaker5cycles5KV1200AABBKP-20KP202000Amp2000AAirBreakerMPS-C2000ABBKPE-16KPE161600AmpAirCircuitBreakerMPS-C2000TripUnitK-Line600VABBTypeK800SK800S800Amp800AAirBreakerLIABB1600AmpTypeLKE-16LKE16MPS-5MPS5AirBreakerI-T-EK-1600K16001600AmpDigitripRMSR810DrawITEABBpartkitforAdvacvacuumcircuitbreakercellswitchgeartripunit515kVITEK-DON600AFrame/200ASensorBreakerDigitripRMS/R500RH52CLSI600AITEKC-G1600A600VAirBreaker600AmpAOD-11600ATripUnitKCG1600AFrameITEKC-G1200A600VAirBreaker600AmpAOD-11200ATripUnitKCG1600AFrameITEKC-G1000A600VAirBreaker600AmpAOD-11000ATripUnitKCG1600AFrameABBLKE8800ABreaker600V800AmpABBCMicroPowerShieldTypeMPS5GLSIGBBCLKE-8800ABreaker/wLSIGSiemensWestripRMS-20002KLSIG-2AGouldABBLKE8BBCTypeK1600K16001600Amp1600AAirBreakerLIABB/BBC809060VacuumBottleADVAC1200AAirPowerCircuitBreaker15kVor5kV)
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