transformer impedance calculation sheet
TRANSCRIPT
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7/24/2019 Transformer Impedance Calculation Sheet
1/30
Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T201 Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Tests To Determine The Equivalent Positive Sequence Impedanc
a. The test is done b' keein# the $V Side Short ir(uited and V Side is su"ied with - hase )00V A Su"'.
b. The test ha%e been (arried out for Nomina" Ta3 i#hest and $owest TA&
Test 1:
Tap Position
1 2-4.)
11 229.,
2 224.9
Transformerratin#
Volta#e $pplied%V&
T LV
~ A
~ A
~ A
HVEa
Eb
Ec
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7/24/2019 Transformer Impedance Calculation Sheet
2/30
Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T201 Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Transformerratin#
Tests To Determine The Equivalent 'ero Sequence Impedance
a.
b. The %arious ases of Tests ha%e been ro%ided be"ow
"ase 1:- HV Supplied/ V (pen "ircuited/ Tertiar! "losed
Test 1:
Tap Position
1 2-1.9
11 2--.9
The test is (arried out b' su"'in# a (urrent of rated fre5uen(' between ara""e" (onne(ted hase termina"s and the neutr(urrent.
Volta#e $pplied%V&
LVTHV
A
A
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7/24/2019 Transformer Impedance Calculation Sheet
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Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T201 Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Transformerratin#
1-8 2--.
2 224.9
"ase ):- HV Supplied/ V Short "ircuited/ Tertiar! "losed
Test ):
Tap Position
1 2-2.4
11 2-2.2
1-8 2-2
2 229.4
Tests To Determine The Equivalent 'ero Sequence Impedance
a.
Volta#e $pplied%V&
The test is (arried out b' su"'in# a (urrent of rated fre5uen(' between ara""e" (onne(ted hase termina"s and the neutr(urrent.
LVT
A
V
HV
A
A
A
V
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7/24/2019 Transformer Impedance Calculation Sheet
4/30
Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T201 Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Transformerratin#
b. The %arious ases of Tests ha%e been ro%ided be"ow
"ase *:- V Supplied/ HV Short "ircuited/ Tertiar! "losed
Test *:
Tap Position
1 .1-
11 .)-
1-8 .,
2 .2
"ase *:- V Supplied/ HV (pen "ircuited/ Tertiar! "losedTest 1:
Tap Position
1 .9
Volta#e $pplied%V&
Volta#e $pplied%V&
HVT
HVT
LV
A
A
A
V
LV
A
A
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7/24/2019 Transformer Impedance Calculation Sheet
5/30
Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T201 Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Transformerratin#
"alculation To Determine The Equivalent 'ero Sequence Impedance at HV+ V an
ZT medan(e Measured in &rimar' (ir(uit with Teritar' Shorted and Se(ondar' 7en
Z$T medan(e measured in Se(ondar' ir(uit with Teritar' Shorted and &rimar' 7en
Z$T medan(e Measured in &rimar' (ir(uit with Teritar' Shorted and Se(ondar' Shorted
Z$T medan(e Measured in Se(ondar' (ir(uit with Teritar' Shorted and &rimar' Shorted
Z &rimar' medan(e ZT*ZT
Z$ Se(ondar' medan(e Z$T*ZT
ZT Tertiar' medan(e S;=Z$T*Z$T??
A
V
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7/24/2019 Transformer Impedance Calculation Sheet
6/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
- HV Supplied/ V Short cicuited/ Tertiar! "losed
V$ .ase of 1)0V$ .ase
1.41 1-1.21 120 2.1
2.-) 94.12 120 2).-)
-.99 ,-.,0 120 2-.19
"urrenteasured %$&
Impedance"alculated %&
-
7/24/2019 Transformer Impedance Calculation Sheet
7/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
- HV Supplied/ V (pen cicuited/ Tertiar! "losed
V$ .ase
.42 44.9, 120 10.0,
10., ,.49 120 9.)-
" termina". t is e6ressed in 7hms and is #i%en b' - times test %o"ta#e/test
"urrenteasured %$&
Impedance"alculated %&
'ero SequenceImpedance
-
7/24/2019 Transformer Impedance Calculation Sheet
8/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
11.- ,2.0) 120 9.-)
1,.2 )2.-9 120 4.92
- HV Supplied/ V Short cicuited/ Tertiar! "losed
V$ .ase
.4 49.) 120 10.1-
10.2 ,,.22 120 9.)4
11.1 ,2.-1 120 9.-4
1,.2) )2.) 120 4.9-
"urrenteasured %$&
Impedance"alculated %&
'ero SequenceImpedance
" termina". t is e6ressed in 7hms and is #i%en b' - times test %o"ta#e/test
-
7/24/2019 Transformer Impedance Calculation Sheet
9/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
- V Supplied/ HV Short cicuited/ Tertiar! "losed
V$ .ase
19.4 0.4 120 ).1
21.2 0., 120 ).)1
22 0. 120 ).0
21.) 0. 120 ).0
- V Supplied/ HV (pen cicuited/ Tertiar! "losed
V$ .ase
21.1 0. 120 ).0
"urrenteasured %$&
Impedance"alculated %&
'ero SequenceImpedance
"urrenteasured %$&
Impedance"alculated %&
'ero SequenceImpedance
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7/24/2019 Transformer Impedance Calculation Sheet
10/30
-
7/24/2019 Transformer Impedance Calculation Sheet
11/30
Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T202 Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Tests To Determine The Equivalent Positive Sequence Impedanc
a. The test is done b' keein# the $V Side Short ir(uited and V Side is su"ied with - hase )00V A Su"'.
b. The test ha%e been (arried out for Nomina" Ta3 i#hest and $owest TA&
Test 1:
Tap Position
1 224.,
11 229.,
2 224.9
Transformerratin#
Volta#e $pplied%V&
T LV
~ A
~ A
~ A
HVEa
Eb
Ec
-
7/24/2019 Transformer Impedance Calculation Sheet
12/30
Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T202 Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Transformerratin#
Tests To Determine The Equivalent 'ero Sequence Impedance
a.
b. The %arious ases of Tests ha%e been ro%ided be"ow
"ase 1:- HV Supplied/ V (pen "ircuited/ Tertiar! "losed
Test 1:
Tap Position
1 214.
11 21.4
The test is (arried out b' su"'in# a (urrent of rated fre5uen(' between ara""e" (onne(ted hase termina"s and the neutr(urrent.
Volta#e $pplied%V&
LVTHV
A
A
-
7/24/2019 Transformer Impedance Calculation Sheet
13/30
Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T202 Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Transformerratin#
1-8 21,.
2 21,
"ase ):- HV Supplied/ V Short "ircuited/ Tertiar! "losed
Test ):
Tap Position
1 21.-
11 21
1-8 21,.
2 21.
Tests To Determine The Equivalent 'ero Sequence Impedance
a.
Volta#e $pplied%V&
The test is (arried out b' su"'in# a (urrent of rated fre5uen(' between ara""e" (onne(ted hase termina"s and the neutr(urrent.
LVT
A
V
HV
A
A
A
V
-
7/24/2019 Transformer Impedance Calculation Sheet
14/30
Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T202 Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Transformerratin#
b. The %arious ases of Tests ha%e been ro%ided be"ow
"ase *:- V Supplied/ HV Short "ircuited/ Tertiar! "losed
Test *:
Tap Position
1 .,91
11 .,)
1-8 .,,
2 .,02
"ase *:- V Supplied/ HV (pen "ircuited/ Tertiar! "losedTest 1:
Tap Position
1 .
Volta#e $pplied%V&
Volta#e $pplied%V&
HVT
HVT
LV
A
A
A
V
LV
A
A
-
7/24/2019 Transformer Impedance Calculation Sheet
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Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T202 Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Transformerratin#
"alculation To Determine The Equivalent 'ero Sequence Impedance at HV+ V an
ZT medan(e Measured in &rimar' (ir(uit with Teritar' Shorted and Se(ondar' 7en
Z$T medan(e measured in Se(ondar' ir(uit with Teritar' Shorted and &rimar' 7en
Z$T medan(e Measured in &rimar' (ir(uit with Teritar' Shorted and Se(ondar' Shorted
Z$T medan(e Measured in Se(ondar' (ir(uit with Teritar' Shorted and &rimar' Shorted
Z &rimar' medan(e ZT*ZT
Z$ Se(ondar' medan(e Z$T*ZT
ZT Tertiar' medan(e S;=Z$T*Z$T??
A
V
-
7/24/2019 Transformer Impedance Calculation Sheet
16/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
- HV Supplied/ V Short cicuited/ Tertiar! "losed
V$ .ase of 1)0V$ .ase
1.) 1-0.4 120 2.,)
2.-) 94.12 120 2).--
-.99 ,-.,0 120 2-.1,
"urrenteasured %$&
Impedance"alculated %&
-
7/24/2019 Transformer Impedance Calculation Sheet
17/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
- HV Supplied/ V (pen cicuited/ Tertiar! "losed
V$ .ase
.- 49.2 120 10.10
9.42 ,.9- 120 9.))
" termina". t is e6ressed in 7hms and is #i%en b' - times test %o"ta#e/test
"urrenteasured %$&
Impedance"alculated %&
'ero SequenceImpedance
-
7/24/2019 Transformer Impedance Calculation Sheet
18/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
10. ,1.4, 120 9.-1
1.-1 )2.-- 120 4.90
- HV Supplied/ V Short cicuited/ Tertiar! "losed
V$ .ase
.-2 49.0, 120 10.0
9.9- ,., 120 9.-4
10.2 ,1.40 120 9.-1
1.-) )2.14 120 4.4
"urrenteasured %$&
Impedance"alculated %&
'ero SequenceImpedance
" termina". t is e6ressed in 7hms and is #i%en b' - times test %o"ta#e/test
-
7/24/2019 Transformer Impedance Calculation Sheet
19/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
- V Supplied/ HV Short cicuited/ Tertiar! "losed
V$ .ase
21.1 0.41 120 ).,9
20.4) 0.42 120 ).
20.41 0.42 120 ).
20.99 0.40 120 ).,,
- V Supplied/ HV (pen cicuited/ Tertiar! "losed
V$ .ase
21.-- 0.40 120 ).,
"urrenteasured %$&
Impedance"alculated %&
'ero SequenceImpedance
"urrenteasured %$&
Impedance"alculated %&
'ero SequenceImpedance
-
7/24/2019 Transformer Impedance Calculation Sheet
20/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
Tertiar! ,indin#
,.9- %
0.40 % ,.-4 0.2,
,., % $
0.42 % 0.)
,.-4 % T
0.2, %
0.) %
-
7/24/2019 Transformer Impedance Calculation Sheet
21/30
Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T20- Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Tests To Determine The Equivalent Positive Sequence Impedanc
a. The test is done b' keein# the $V Side Short ir(uited and V Side is su"ied with - hase )00V A Su"'.
b. The test ha%e been (arried out for Nomina" Ta3 i#hest and $owest TA&
Test 1:
Tap Position
1 2)0.9
11 2-9.
2 2-9.2
Transformerratin#
Volta#e $pplied%V&
T LV
~ A
~ A
~ A
HVEa
Eb
Ec
-
7/24/2019 Transformer Impedance Calculation Sheet
22/30
Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T20- Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Transformerratin#
Tests To Determine The Equivalent 'ero Sequence Impedance
a.
b. The %arious ases of Tests ha%e been ro%ided be"ow
"ase 1:- HV Supplied/ V (pen "ircuited/ Tertiar! "losed
Test 1:
Tap Position
1 2--.9
11 2-2.2
The test is (arried out b' su"'in# a (urrent of rated fre5uen(' between ara""e" (onne(ted hase termina"s and the neutr(urrent.
Volta#e $pplied%V&
LVTHV
A
A
-
7/24/2019 Transformer Impedance Calculation Sheet
23/30
Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T20- Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Transformerratin#
1-8 2-2.4
2 2-0.9
"ase ):- HV Supplied/ V Short "ircuited/ Tertiar! "losed
Test ):
Tap Position
1 2-).
11 2-2.9
1-8 2-2.9
2 2--.4
Tests To Determine The Equivalent 'ero Sequence Impedance
a.
Volta#e $pplied%V&
The test is (arried out b' su"'in# a (urrent of rated fre5uen(' between ara""e" (onne(ted hase termina"s and the neutr(urrent.
LVT
A
V
HVA
A
A
V
-
7/24/2019 Transformer Impedance Calculation Sheet
24/30
Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T20- Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Transformerratin#
b. The %arious ases of Tests ha%e been ro%ided be"ow
"ase *:- V Supplied/ HV Short "ircuited/ Tertiar! "losed
Test *:
Tap Position
1 .
11 .)
1-8 .,
2 .
"ase *:- V Supplied/ HV (pen "ircuited/ Tertiar! "losed
Test 1:
Tap Position
1 .,
Volta#e $pplied%V&
Volta#e $pplied%V&
HVT
HVT
LV
A
A
A
V
LV
A
A
-
7/24/2019 Transformer Impedance Calculation Sheet
25/30
Transformer Sequence Impedance Test Sheets
Transformer Sequence Impedance Test Sheets
Substation: New Zakher Grid 90/120 MVA
Transformer !: T20- Vo"ta#e $e%e" &rimar' Se(ondar'
!ate: 2)*+eb*1, 220 kV -). kV
Transformerratin#
"alculation To Determine The Equivalent 'ero Sequence Impedance at HV+ V an
ZT medan(e Measured in &rimar' (ir(uit with Teritar' Shorted and Se(ondar' 7en
Z$T medan(e measured in Se(ondar' ir(uit with Teritar' Shorted and &rimar' 7en
Z$T medan(e Measured in &rimar' (ir(uit with Teritar' Shorted and Se(ondar' Shorted
Z$T medan(e Measured in Se(ondar' (ir(uit with Teritar' Shorted and &rimar' Shorted
Z &rimar' medan(e ZT*ZT
Z$ Se(ondar' medan(e Z$T*ZT
ZT Tertiar' medan(e S;=Z$T*Z$T??
A
V
-
7/24/2019 Transformer Impedance Calculation Sheet
26/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
- HV Supplied/ V Short cicuited/ Tertiar! "losed
V$ .ase of 1)0V$ .ase
1.4)9 1-0.29 120 2.1
2.)1 9.40 120 2).-)
-.4 ,-.-1 120 2-.19
"urrenteasured %$&
Impedance"alculated %&
-
7/24/2019 Transformer Impedance Calculation Sheet
27/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
- HV Supplied/ V (pen cicuited/ Tertiar! "losed
V$ .ase
.9- 44.)9 120 10.01
10.,) ,.) 120 9.-
" termina". t is e6ressed in 7hms and is #i%en b' - times test %o"ta#e/test
"urrenteasured %$&
Impedance"alculated %&
'ero SequenceImpedance
-
7/24/2019 Transformer Impedance Calculation Sheet
28/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
11.-2 ,1.0 120 9.29
1,.) )2.2) 120 4.44
- HV Supplied/ V Short cicuited/ Tertiar! "losed
V$ .ase
.92 44.4- 120 10.0
10., ,.,1 120 9.-9
11.- ,1.4- 120 9.-1
1,.,2 )2.20 120 4.44
"urrenteasured %$&
Impedance"alculated %&
'ero SequenceImpedance
" termina". t is e6ressed in 7hms and is #i%en b' - times test %o"ta#e/test
-
7/24/2019 Transformer Impedance Calculation Sheet
29/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
- V Supplied/ HV Short cicuited/ Tertiar! "losed
V$ .ase
21.14 0.4 120 ).-
20.4 0.9 120 ).4
21., 0.4 120 ).2
21.) 0.9 120 ).4
- V Supplied/ HV (pen cicuited/ Tertiar! "losed
V$ .ase
21.2 0.9 120 ).,0
"urrenteasured %$&
Impedance"alculated %&
'ero SequenceImpedance
"urrenteasured %$&
Impedance"alculated %&
'ero SequenceImpedance
-
7/24/2019 Transformer Impedance Calculation Sheet
30/30
Transformer Sequence Impedance Test Sheets
Tertiar'
9.9 kV
Tertiar! ,indin#
,.) %
0.9 % ,.00 0.-2
,.,1 % $
0.9 % 0.)
,.00 % T
0.-2 %
0.) %