2005 年度变压器行业变压器十强企业和互感器三强企业

6CalculationofSecondaryLoadVoltageinTransformerJIANGGuang-zuShanghaiVoltageRegulatorManufactureCo.,Ltd.,Shanghai200062,ChinaAbstractThedefectsoftraditionalformulatocalculateloadvoltageintransformerarepreseated.Anewformulaisderived.Theloadvoltageintransformerisanalyzedbythenewformula.KeywordsTransformer;Load-o./a0e;1o2erfa3/or;4a.35.a/6on2004-06-141942-0.8382V123'cosφ2KLu23'34'～612603'3Δu%1bΔu%7～9Δu%=uS%cosφ+uS%sinφtansin-1uS%sinφ10027Δu%=uS%cosφ+(uS%sinφ)22008Δu%=uS%cosφ9φ=φS-φ278798288[1].[M].2003.==============================================2005200#$%&1163Fig.3Logicsystemdiagram25-1-281973-197-197-DevelopmentandApplicationofOilDrainNitrogenFillingFire-ExtinguishingDeviceGAOChang-faQIUYong-weiZHANGSheng-liBaodingTianweiElectricCompleteEquipmentCo.,Ltd.,Baoding071000,ChinaAbstractTheprincipleandapplicationoftheoildrainnitrogenfillingfire-extinguishingdeviceoflargeoil-immersedpowertransformerareintroduced.ItssituationinChinaisanalyzed.Itsdeve-lopmentproposalisoffered.KeywordsTransformer*+re,e-.+n/0+s1+n/2e3+4eTem5era.0re6ensor[1]GBJ16-1987[S].[2]GB50059-199235-110kV[S].[3].[M].1999.[4].[M].2003.==============================================2005200#$%&’(’)*+*00000,2-02%.#0/0.#0/0-%$00012-.0103,#-#/0444%567%57254325-7-151957-ProblemstoMeasureTransformerDCResistancewithThreeChannelMethodDINGWeiNanjingPowerSupplyCompany,Nanjing528300,ChinaAbstractTheprincipletomeasuretransformerDCresistancewiththreechanneltesterisana-lyzed.Itsconnectionintestisanalyzedanddiscussed.Theproblemsanderrorsintestarepre-sented.KeywordsTransformerDCresistanceMeasurement1rror2281µΩ～545µΩ2.9%～5.37%3.233!12322125000kVA/220kV35kV/Ω/ΩaO0.010140.009595bO0.0099320.009563cO0.0096940.009413ΔR/%4.501.91Table2DCresistanceinYaohuamenNo.2125000kVA/220kV(35kV)maintransformer3500kVA/10kV400VTable3DCresistanceof500kVA/10kV(400Vside)transformer/Ω/ΩaO0.0010980.0009510.0014430.000950bO0.0010800.0009250.0014250.000926cO0.011100.0009520.0014540.000952!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!#$%&&&’()*’(*+36611H2CH4C2H6C2H4C2H2COCO22002.8.1532.5319.4716.613.280.1039.46107824262003.6.1735.3572.1944.8091.840.00208.83105722652003.6.2843.8476.9944.83105.760.08227.66111122532003.7.1650.9397.0554.08108.200.00259.33122730262003.8.651.6799.1461.01122.800.07283.021263347821C2H2/C2H4=0.07/122=0.00060.10CH4/H2=99/51=1.91～32C2H4/C2H6=122/61=21～31GB/T7252-2001150µL/L1039.46µL/L200µL/L24%/200361771610%/!2003862C2H2/C2H4CH4/H2C2H4/C2H6021COCO2300Ω0.5µF450MΩ#!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!2006$620062%&’0()*+,&0$((-2006)*+,$0&-2006)*+,$0&-&%%&)*+,’%$$-2006)*+,’%$$-&%%’)*+,.6’2-2006)*+,.6’2-&%%(2006&0&B1