(200333):,,。:;;;:TM403.5:B:1001-8425(2010)S0-0035-06SelectionandVerificationofPressureReliefDeviceinTap-ChangerZHANGDe-ming(ShanghaiHuamingPowerEquipmentCo.,Ltd.,Shanghai200333,China)Abstract:Thestructuralprincipleandprotectiveperformanceofpressurereliefdeviceinoilchamberoftap-changerareexpounded.Theselectionprincipleandtestverificationofthedeviceareintroduced.Thedistributioncautionsofthedevicearepresetned.Keywords:Tap-changer;Pressurereliefdevice;Selection;Verification1IEC60214-2∶2004、GB10230.2-20075.7,()()。、。2,。,(△P/△t),。。,。。,、。(1)。。。,,,,,。、。,,。,。,,。,(3±20%)×105Pa。,,1。。,,(4~5)×105Pa。(2)。。、,2。,,。,,,。TRANSFORMER478s20108Vol.47AugustNo.8s201047(3)。,。,。,、。,。,,,()。,、,。,。,,,3。,。,,(0.85~1.75)×105Pa,20ms。3:①。②,。③、。。,。3.1。(1)。、、。,。(43),,。,1()Fig.1Blastingcover(backview)2()Fig.2Blastingfilm(backview)3Fig.3Pressurereliefvalve①②③④⑤⑥⑦⑧⑨⑩輥輯訛輥輰訛輥輱訛輥輲訛輥輳訛1—;2—;3—;4—;5—;6—;7—;8—9—;10—;11—;12—;13—;14—;15—。4Fig.4Structureofpressurereliefvalve368s,,2ms。,,。,,。,。,,。。,。,,“”,,。。:PO=2PG=2(PH+PK+PQ)PO———PG———,PH———。,(2m),30kPa;,(SYXZZ-200/35,0.5m),10kPa~15kPaPK———,10kPaPQ———,10kPaPO=2PG=2(PH+PK+PQ)=2(30+10+10)=100kPa,138kPa。(2)、。5,(A~H)。△P/△t。△P/△t(5×103Pa/s),(B),,(D),(E)。→→。△P/△t(105Pa/s),(F),(G),(H),,。②③,P0:P0=KP1K———,②,K3~3.5。③、,K2.5~3P1———P0,P1,,;,,,。,1。(3)。1,,P0138kPa。,P01.00.50F510107Pa/s5×106Pa/s2×106Pa/s106Pa/s5×105Pa/s104Pa/sP/105PaEDABGHabct/sa—;b—;c—。5Fig.5Adaptionofactioncharacteristicofprotectivedevices3747,(1.0±10%)(1.2±10%),138kPa。。MRP085kPa,P0138kPa。ABBP0175kPa。,。MRDW2000,,90kPa,10ms;ABB,125kPa~200kPa。3.2,。,,,。。(1),:[P]=PmnPm———。,△P/△t。,Ф460×101×106Pa1.5×106Pan———。,n5;,n3(2),:[P]≤Pmn[P]≥K[P0]P0———K———,K=2~3.5。,K;,KPm、n———(1),,300kPa±20%;,(400kPa~500kPa)±20%。485kPa,R,NS-YB0.5,2m(,6)。P=γgh=0.88×9.81×2=17.2kPa。/m·s-11.0±10%1381.2±10%138(2.0m)/kPa35.546.235.242.2106.5(K=3)115.5(K=2.5)/kPa124.3(K=3.5)138.6(K=3)138138:①K:,,。②,。1Table1Selectionofsettingreliefpressuresofpressurereliefvalve6Fig.6Simulationswitchingtestduringsettingheightofoilconservator388s4.1(1)1500A、1660V,。(2),,,7。(3)85kPa76.9kPa;138kPa128.7kPa。(4),。4.2(1)1500A、1660V。(2),60,22kPa,,17.9kPa,8。(3),,。5,。。,。,,。,。,,,,(△P/△t),,,,(a)85kPa(b)138kPa7Fig.7Pressurecurvesofpressurereliefvalveduringblockageofrespiratorinoilconservatoroftap-changer55.050.045.040.035.030.025.020.015.010.05.00.0-5.0-4.00.04.08.012.016.020.024.028.032.0/kPa/min18Fig.8Diagramofwaveformtestedbypressuresensorundernormalbreathofoilconservatoroftap-changer3947,(),,,。,,,。()。。,,,,。,。,,。,。,,。,。,。,,。6,:(1),。(2)()。(3)。,。(4),2。:[1].[M].:,2004.[2].[M].:,2008.[3],.[M].:,2006.[4].[J].,1987,34(8):6-10.[5].[J].,2000,37(7):40-42.[6].[J].,2006,43(9):27-30.[7].[J].,1988,35(8):21-23.[8].[J].,1991,38(10):14-17.[9].[J].,2008,45(10):39-42./kPa16001.2±10%m/s~46.2138kPa120~140300±20%16~2010mL~30mL,0.6m/s~0.8m/s1.0±10%m/s~35.52Table2Actioncharacteristicofprotectivedevicesintap-changer:2m。:2010-01-14:(1942-),,,,。!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!“”“”,“”,。40