荷兰150MVA 220kV 电力变压器英文招标书Word下载.docx
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APPLICABLEREQUIREMENTSANDGUIDE-LINES
EveryNENstandardand–
asfarasnoDutchstandardexists
IECpublications,inadditiontowhichtransformersareofimportance:
1.1
NEN-EN-IEC60076-1:
1999/A12:
2002
Energietransformatoren–Algemeen
1.2
NEN-EN-IEC60076-2:
1999
Energietransformatoren–Temperatuurverhoging
1.3
NEN-EN-IEC60076-3:
2001
Energietransformatoren-Isolatieniveausendië
lektrischeproeven
1.5
NEN-EN-IEC60076-5:
2000
Energietransformatoren-Kortsluitsterkte
1.6
NPR-IEC60076-8:
Energietransformatoren-Leidraadvoordespecificatieendetoepassing（+correctie1986）
1.7
NEN-EN-IEC60214:
1998
Regelschakelaarsvoorenergietransformatoren
1.8
NPR10354（1992）
Energietransformatoren-Leidraadvoorhetbelastenvanolietransformatoren
1.9
NEN10542（1989）
Regelschakelaarsvoorenergietransformatoren-Leidraadvoordetoepassing
1.10
NEN10137（1996）
Doorvoerisolatorenvoorwisselspanningenboven1000
V
1.11
NEN-EN-IEC60044-1:
2000/A1:
Stroomtransformatoren
1.12
NEN-EN-IEC60076-10:
Energietransformatorenensmoorspoelen-Bepalingvangeluidniveaus
1.13
NEN10296（1985）
Isolatieolië
nvoortransformatorenenschakelmaterieelEisenvoornieuwemineraleolië
n
1.16
NEN10422（1990）
nvoortransformatorenenschakelmaterieelRichtlijnenvoorhetonderhoudendecontrolevaningebruikzijndemineraleolie
1.17
NEN10616（1979）
Energietransformatoren-Aanduidingenvanklemmenenaftakkingen
1.20
NEN10071-1（1995）
Coö
rdinatievanisolatie-Deel1:
Definities,uitgangspuntenenregels
1.21
NPR10071-2（1997）
rdinatievanisolatie-Deel2:
Leidraadvoordetoepassing
Theseregulationsarerelevantorthisscopetellsotherwise.ThisismentionedinpartB“requirementsandtestsapplytoPowertransformers”.
Forthetotalsupply,establishstandards,bytheDutchlegislativepublicjudicatureororganizationsarevalid.
Inrelationtothosestandardstheseprescriptionsarevalid:
a）eachofthementionedregulationisoperativeonthedayoftheassignment.
b）eachofthereferencesinthisscopeisbasedonthementionedversion（yearofpublication）fromtheregulations.
c）referencesinthisscopetowardssections,pagesandtable-numbersfromaregulationcanbeincorrectifinthemeantimeanewversionoftheregulationappears.
2
SCOPE
2.1
Numberoftransformers
3
2.2
Manufacture
................
X
2.3
Design
Oiltransformer
2.4
Position（seealsochapter4）
Outside
2.5
Numberofphases
3
2.6
Numberofwindings
2
2.7
Factorgroup
Ynd3
2.8
Frequency
50Hz
3GRIDSITUATION
HVside
MVside
3.1
Voltage
220kV
30,3kV
3.2
Voltagefluctuation
242-198kV
30,3–31,5kV
3.3
Highestindustrialvoltage
（accordingtoNEN10071）
245kV
36,0kV
3.4
Earthconditionofthegrid
effective
3.5
Earthfaultfactor
0,83
3.6
Maximumtimeearthfault
1sec.
3sec.
3.7
Short-circuitPowerofthegrid（3-fases）
40kA
25kA
3.8
Durationoftheincomingshort-circuitcurrent
1sec.
3.9
GridratioX0/X1
1,44
………
4
OPERATINGCONDITIONS
Thesymbol（）inthefirstrow,whichisbehindthetext,meansthatthisitemisforContractorinformation.InthesecondrowContractormustindicate,incircular（0）,thathehastakennoticeofthisinformation.
4.1Site
Location:
Europe.
integratinginexistinginstallationoftheOwner´
sPlant.
Latitude:
400meters.
Longitude:
1300meters.
Elevation:
0.87m+NAP（sealevel）
Soilcondition:
±
1metersandfilloversoftclaylayersuptoadepthof20-40meters.
4.2Climate
Operatingconditions:
Atmosphericaircontainsdust,SO2andlowconcentrationsofHF（10mg/m3
）,saltwaterthroughseawinds;
Relativehumidity:
50-95%;
averaging80%
Ambienttemperature:
-25Cto+40C
Rainfall:
800mmperyear:
-90l/sec/haper15minutes.
-20l/sec/haper2hours.
Snow:
0,5mmax.loadforroofs.
Winds:
slightlyprevailingwestwinds.
Windloads:
NEN3850forcoastalzone.
Seismicactivity:
Verylowtonone.
Groundwaterlevel:
-0.8mNAPoriginalwatertable
Apparentwatertable:
0.3-0.7mbelowplantlevel
4.3Infrastructure
Road:
Thesiteentrancewillgivedirectaccessfromthepublicroadsystemtosite;
Siteentrance:
Widthaprox.6m;
clearance9.5m（highvoltagelines）,height3.9meter
Rail:
Anindustrialrailwaysystemispassinginfrontofthesite,whichisconnectedtothepublicgrid;
Sea:
ThefacilitiesarereachablebymediumsizeseashipsasaretheharbourfacilitiesattheOwner´
Channel:
Max.draught4.5m;
width12m;
length80metermax.
4.4Operationschedule
24hours
5ASSIGNDATA
5.1MainVoltage（Un）
Maintap
Regulationtap
Meansofregulation
HV
+7X±
3,0kV
-12à
14X±
Underload
MV
5.2Categoryoftheregulation
SRCF
Poweronthetap
full
5.3Outcomingpower
MVside
-coolingONAN:
100MVA
-coolingONAF:
150MVA
5.4Limitforraiseoftemperature
-winding（average）
65K
-top-oil
60K
-calculatedhighesttemperaturejumpinwinding
....K
5.5Circumstances
Insection4.1and4.3assignvoltagesandloadsarebasicconditionsforunderneathmentionedoperatingconditions.
Twowindingtransformer
HV/MV
MinimumVoltage
（kV）
198
30,3
MaximumVoltage
242
Energydirection
HS=>
MS
Max.powerconsumption
（MVA）
....
Max.effectiveoutput
150
Cos
0,9
Maximumenergization
（%）
fullload
…………
5.6Connectionbymeansof
-
HV-side:
gasisolatedtube（GIL）
MV-side:
copperbusbarwithdetachedjoints
Seealsodrawing1
5.7Insulationlevel
4.7.1
Ofthewinding
typeofwindinginsulation
phasepoint:
-Voltagelowfrequency
kVeff
325
70
-Lightningvoltage1,2/50s
kVtop
750
170
.schakelisolatie-
niveau（SIN）,
fase-aarde
450
95
.SIN,fase-fase
neutralpoint:
140
n.a.
-Lightningvoltage3-10/50s
4.7.2
Thebushinginsulator
Phaseterminal:
460
1050
Neutralpointterminal:
185
Applied:
DINtype........
InneedofMV-side
S
5.8Short-circuitvoltage,-lossandresistance
Position
Tapchanger
High
（1）
Nom.
（8）
Low
（20/22）
Transformationratio
kV
220
175
...
（1）
Shortcircuitvoltageat75C
（guaranteed）
?
17,5
?
Valuerelatedto
MVA
Limitstoshort-circuitvoltage
%+
5
%
Short-circuitloss
at75C
kW
JoulelossesI2R
（R
=
direct-currentresistanceat75C）
Theunderlinedreadout（value’s）areguaranteedterms.Theyothervalue’sareonlyforinformation.Iftheconditionsofguaranteeoftheshort-circuitlossexceedthevalueof10%,measurementuncertaintyareincluded,Principalhastherighttorefuse,rejectthetransformer.
Resistancetoshortcircuit:
Transformerhastowithstandshort-circuitcurrentswhichoccur
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