Report of Type Test for 500kV LA
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Transcript of Report of Type Test for 500kV LA
Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
http://www.whvri.com/jcbg Page: 1/7
Quality Inspection and Test Center for Equipment of Electric Power (2002)Quality(Country)No(K0711) No. L1026 (2006) No.070
Inspection Report Address: 143 Luoyu Rd., Hongshan District, Wuhan, Hubei Postal Code: 430074 Telephone: (027)87445917, 87445905 Fax: (027)87445917 Website: www.whvri.com Email: [email protected]
Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
http://www.whvri.com/jcbg Page: 1/7
Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
http://www.whvri.com/jcbg Page: 1/7
1. Entrusting Company
Nanyang Jinguan Electric Co., Ltd. 2. Sample Description
Name: 500kV porcelain-housed metal oxide surge arrester without gaps for A.C. system Type: Y20W-444/1015 Manufacturer: Nanyang Jinguan Electric Co., Ltd. Sampling Method: Sampling Sample Quantity: 1 piece surge arrester (A1), 1 housing (B1), 16 pieces scale units (C1-C16) Varistor Type: Ф115/Ф42*21mm
3. Test Standard
IEC 99-4: Metal oxide surge arrester without gaps for A.C. system Technical Conditions of the Manufacturer: Outline test for 500kV metal oxide surge arrester without gaps for A.C. system
4. Inspection Type Type Test
5. Inspection Date 2006-06-28---2006-08-02
6. Period of Validity
Three years from issuing 7. Inspection Results
According to IEC 99-4 standards and requirements, we did the type test to porcelain-housed metal oxide surge arrester without gaps for A.C. system Y20W-444/1015, which offered by Nanyang Jinguan Electric Co., Ltd. The 12 test items fulfilled the requirements, eligible. Inspection and Testing: Li Ze, Jia Jinhu Checking: Li Ze Auditing: Approval: Date: 2006-08-04
Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
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Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
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8. Test Items & Results No. Test Item Standard Requirementd Test Results Conclusion
1 Continuous
current test
Sample: 1 surge arrester(A1)
Complete current: Ix≤5000μAr.m.s.
Resistance current: Ir≤800μAp
Ix: 2280μA r.m.s.
Ix: 350μAp
Fulfill the
requirement
s
2
Power
frequency
reference
voltage test
Sample: 1 surge arrester(A1)
Under power frequency reference
current 1mA, U5mA A.C.≥444kV r.m.s.
U5mA A.C.: 447.8kV r.m.s.
Fulfill the
requirement
s
3 D.C. reference
voltage test
Sample: 1 surge arrester(A1)
Under D.C. reference current 1mA,
597≤U1mA D.C.≤602kV
U1mA D.C: 601.0kV
Fulfill the
requirement
s
4
Current
leakage test
under
0.75U1mA D.C.
Sample: 1 surge arrester(A1)
IL(0.75 U1mA D.C.) ≤50μA IL(0.75 U1mA D.C.): 22.0μA
Fulfill the
requirement
5
Partial
discharge test
& radio
interference
test
Sample: 1 surge arrester(A1)
a. Apply Ur to arrester, lasting for 10s,
then turn down to 1.10 Ur, doing the
measurement. Partial discharge
≤10pC
b. Under 1.10 Ur, radio interference
voltage ≤500μV
a. first apply voltage 444kV, lasting for
10s, then turn down to 390.5kV,
measuring the partial discharge:
6.0pC
b. apply voltage 390.5kV, measuring the
radio interference voltage: 280μV
Fulfill the
requirement
s
6 Mechanical
load test
Sample: 1 surge arrester unit (down unit
of A1, including the base)
Surge arrester suitable for vertical
mounting, only carrying out anti-bending
load test.
Top of surge arrester should endure
horizontal pulls 5.75kN、10s, and should
no damage
Test was carried out on the unit with base,
converting according to the height:
Arrester total height 5.86m, height of the
unit with base 2.16m, height scale factor:
5.86/2.16=2.72, then should apply
horizontal pull 5.75*2.72=15.64kN to the
unit with base; In fact, applied 17.0kN,
converting to 6.25kN on the top of arrester,
withstanding 10s, housing the terminals no
abnormal phenomenon
Fulfill the
requirement
s
7 Sealing test
Sample: 1 surge arrester (A1, four scale
units)
Using helium leakage method: helium
leakage detector calibration, when
creating a vacuum to 26Pa, spraying
helium to each sealing surfaces, then
using helium leakage detector to
measure the leak rate and should not
exceed 6.65*10-5Pa·L/s
Creating a vacuum to 26Pa, spraying
helium to each sealing surfaces, using
helium leakage detector to measure the
leak rate of the sample:
Sample No. Leak Rate(Pa·L/s)
A1-1: <1.0*10-5
A1-2: <1.0*10-5
A1-3: <1.0*10-5
Fulfill the
requirement
s
Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
http://www.whvri.com/jcbg Page: 1/7
Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
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8
Porcelai
n
housing
insulatin
g
withstan
d test
Sample: 1 surge arrester housing(B1)
(1) Power frequency withstand voltage:
(kV r.m.s.)
Dry: 890, withstanding time: 1min
Wet: 740, withstanding time: 10s
(2) Lightning impulse withstand voltage:
1675kVp
Anode and cathode both 15 times, sample
should no flashover phenomenon
(3) Switching impulse withstand
voltage(wet): 1250kVp
Anode and cathode both 15 times, sample
should no flashover phenomenon
Corrected to standard atmosphere conditions:
(1) Power frequency withstand voltage
Dry: 891.4kV r.m.s., withstanding time: 1min,
Passed
Wet: 740.3kV r.m.s., withstanding time: 10s,
Passed
(2) Lightning impulse withstand voltage:
1681.7kVp
Anode and cathode both 15 times, sample no
flashover phenomenon
(3) Switching impulse withstand voltage(wet):
1255.4kVp
Anode and cathode both 15 times, sample no
flashover phenomenon
Fulfill
the
require
ments
9
Residual
voltage
test
(1) Steep current impulse residual voltage
test
Sample: 3 Scale units(C1-C3)
Measuring the residual voltage under 1/5μs、
20kA steep current impulse, multiplying scale
factor, converting into residual voltage of the
complete surge arrester, the maximum value
defined to be the steep current impulse
residual voltage of the surge arrester. The
value should not large than 1106kVp
Scale unit U1mA D.C: (kV) Scale unit U20kA: (kVp)
4.32 4.32 4.32 7.76 7.77 7.82
Scale factor:
139.3 139.3 139.3
Surge arrester U20kA: (kVp)
1081.4 1082.8 1089.8
Steep current impulse residual voltage of the surge
arrester: 1090kVp
Fulfill
the
require
ments
(2) Lightning impulse residual voltage test
Sample: 3 scale units (C1-C3)
Measuring lightning impulse residual voltage
under 8/20μs 10kA、20kA、40kA, multiplying
scale factor, converting into residual voltage of
the complete surge arrester. Getting the
maximum value, drawing a relative curve
between the residual voltage and current.
From the curve, residual voltage that
corresponding 20kA is defined to be the
lightning impulse protection level of the surge
arrester. The value should not large than
1015kVp
Scale unit U1mA D.C: (kV) Scale unit U10kA: (kVp)
4.32 4.32 4.32 6.85 6.86 6.88
Scale unit U20kA: (kVp) Scale unit U40kA: (kVp)
7.23 7.22 7.25 7.88 7.86 7.90
597≤U1mA D.C.≤602kV
Scale factor:
139.3 139.3 139.3
Surge arrester U10kA: (kVp)
954.6 956.0 958.8
Surge arrester U20kA: (kVp)
1007.6 1006.2 1010.3
Surge arrester U40kA: (kVp)
1098.1 1095.3 1100.9
According to residual voltage---current curve,
getting the lightning impulse protection level of the
surge arrester: 1013kVp
Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
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(3) Switching impulse residual voltage test
Sample: 3 scale units(C1-C3)
Measuring switching impulse residual voltage
under 30/80μs 2000A, multiplying scale factor,
converting into residual voltage of the complete
arrester. The maximum value defined to be the
switching impulse protection level of the surge
arrester. The value should not large than
856kVp
Scale unit U1mA D.C: (kV) Scale unit U2000A:
(kVp)
4.32 4.32 4.32 6.06 6.04
6.09
Scale factor: Surge arrester U2000A:
(kVp)
139.3 139.3 139.3 844.5 841.7
848.7
Switching impulse protection level of the surge
arrester: 849kVp
Fulfill
the
require
ments
1
0
Long
duration
current
impulse
withstand
test
a. Line discharge test:
Sample: 3 scale unit(C4-C6)
Line discharge class: 5
Test parameters:
Z- line wave impedance: 0.5Ur
UL-electrification voltage: 2.4Ur
T-lasting time: 3200μs
(1) Measuring 30/80μs 500A switching impulse
residual voltage Ures, getting the minimum
value. According to formula, calculating the
energy W that get across the sample
(2) When measuring the first time discharging,
sample energy capability W1 (W1 should be
90-100%W)
(3) When measuring the eighteenth
discharging, sample energy capability W18(W18
should be 100-110%W)
Pre and after test: change rate of residual
voltage should not large than 5%, sample
should no puncture 、 no flashover and no
damage phenomenon
Scale unit U1mA D.C: (kV) Scale unit Ur:
(kV)
8.58 8.58 8.58 6.38 6.38
6.38
U20kA pre-test: (kVp)
14.42 14.38 14.40
Z-3.19Ω UL=15.31kV
Actual measurement T: 3340μs
Discharging times: 18
(1) Ures(500A): (kVp)
11.48 11.43 11.46
W= Ures*( UL- Ures)*T/Z=46.67kJ
(2) First time discharging, energy capability
W1(kJ)
46.20 46.56 46.32
(3) Eighteenth discharging, energy capability
W18(kJ)
47.02 47.28 47.10
U20kA after test: (kVp)
14.50 14.45 14.46
Change rate of residual voltage: (%)
+0.70 +0.49 +0.42
Sample no puncture 、 no flashover and no
damage phenomenon
Fulfill
the
require
ments
b. Rectangular wave current impulse test
Sample: 3 scale units(C7-C9)
Rectangular wave current: 2000μs 2500A 18
times
Change rate of residual voltage for pre- and
after test: ≤5%
Sample should no puncture、no flashover and
no damage phenomenon
Test was carried out according to established
procedure and requirements of the entrusting
company
2120μs 2500-2520A 18 times
Passed
U20kA pre-test: (kVp) U20kA after test:
(kVp)
7.28 7.30 7.25 7.32 7.25 7.30
Change rate of residual voltage: (%)
Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
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+0.55 -0.68 +0.69
sample no puncture、no flashover and no damage
phenomenon
1
1
Switching
impulse
operating
duty test
Sample: 3 scale units(C10-C12)
On electricity and heat capability, scale unit is
equal to the complete surge arrester.
(1) Varistors ageing accelerate test:
Scale unit U1mA D.C: (kV)
8.52 8.52 8.52
Scale unit Ur: (kV)
6.34 6.34 6.34
Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
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Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
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Confirm Kcr、Ur
*、Uc
*
(2) Preliminary test:
Under 1.2 Uc*, apply 8/20μs、20kA impulse
current 20 times, then apply 4/10μs、100kA
impulse 2 times
(3) Switching impulse operating duty test:
Sample pre-heated to 60±3, applying
line discharge (Class 5) 2 times, then within
less time (no more than 100ms), applying
power frequency voltage. In this period,
change of voltage should not larger than 1%
1.0 Ur*
10s
Uc*
30min
Confirm second long line discharging,
energy capability that pre- and after test:
Change rate of residual voltage should no
more than 5%
Sample should no puncture、no flashover
and no damage phenomenon
Scale unit Uc: (kV)
5.07 5.07 5.07
U20kA pre-test: (kVp)
14.38 14.36 14.39
Entrusting company provide varistors ageing factor:
Kcr=1.0(95% apparent chargeability)
1.0 Ur*: (kV) 6.34 6.34 6.34
Withstanding time: 10s
Uc*: (kV) 5.07 5.07 5.07
Lasting time: 30min
Test was carried out according to established
procedures.
Second long line discharging, energy capability(kJ):
46.58 46.80 46.50
U20kA after test: (kVp)
14.33 14.40 14.36
Change rate of residual voltage: (%)
-0.35 +0.29 -0.21
sample no puncture、no flashover and no damage
phenomenon
Fulfill
the
require
ments
1
2
Power
frequency
withstand
voltage
time
capability
test
Sample: 4 scale unit( C13-C16)
On electricity and heat capability, scale unit
is equal to the complete surge arrester.
Measuring the residual voltage before test
Sample pre-heated to 60±3, each
sample applied second line discharge (Class
5), then within less time (no more than
100ms), applying power frequency voltage.
In this period, change of voltage should not
larger than 1%
Power frequency withstanding value &
withstanding time:
(1) 1.20 Ur*
1.0s
Uc*
30min
(2) 1.15 Ur*
10s
Uc*
30min
(3) 1.10 Ur*
100s
Uc*
30min
Scale unit U1mA D.C: (kV)
8.48 8.48 8.48 8.48
Scale unit Ur: (kV)
6.31 6.31 6.31 6.31
Scale unit Uc: (kV)
5.04 5.04 5.04 5.04
U20kA pre-test: (kVp)
14.25 14.28 14.24 14.27
varistors ageing factor: Kcr=1.0(95% apparent
chargeability)
Scale unit Ur*: (kV)
6.31 6.31 6.31 6.31
Scale unit Uc*: (kV)
5.04 5.04 5.04 5.04
Second time inserted energy(kJ): 14.72-14.88
(1) 1.20 Ur*: 7.57kV
Withstanding time: 1.0s
Uc*: 5.04kV
Lasting time: 30min
(2) 1.15 Ur*: 7.26kV
Fulfill
the
require
ments
Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
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Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
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(4) ) 1.00 Ur
* 20min
Uc*
30min
Measuring the residual voltage after test
Sample should no thermal runaway、 no
damage phenomenon
Withstanding time: 10s
Uc*: 5.04kV; Lasting time: 30min
(3) 1.10 Ur*: 6.94kV
Withstanding time: 100s
Uc*: 5.04kV; Lasting time: 30min
(4) 1.00 Ur*: 6.31kV
Withstanding time: 20min
Uc*: 5.04kV; Lasting time: 30min
Test was carried out according to established
procedures.
U20kA after test: (kVp)
14.29 14.25 14.28 14.30
Sample no thermal runaway、no damage.
Annex A、Sample Figuration Drawing
Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
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Annex B、Sample Main Specifications Rated Voltage Ur: 444kV Continuous Operating Voltage Uc: 355kV Nominal Discharge Current In: 20kA Lightning Impulse Residual Voltage Ures≤1015kV Annex C、Main Inspection & Test Equipments
No.
Equipment Name/Type
Equipment No.
Range Accuracy or Inaccuracy
Test Organization Period of Validity
1
2250kV power frequency high
voltage generator
/ 0-2250k
V /
National High-Voltage Measurement Station
2007-11-25
2 5400kV impulse
voltage generator
/ 0-5400k
V /
National High-Voltage Measurement Station
2007-08-24
3
1400kV power frequency high
voltage generator
SB201 0-1400k
V /
National High-Voltage Measurement Station
2007-05-08
4 2400kV D.C.
high voltage test instrument
SB203 0-2400k
V /
National High-Voltage Measurement Station
2007-05-10
5 8/20μs impulse
current generator
BL023 0-40kA /
Quality Inspection and Test Center for
Equipment of Electric Power
2008-05-15
6 4/10μs high
current impulse generator
BL025 0-150kA /
Quality Inspection and Test Center for
Equipment of Electric Power
2008-05-14
7 Long duration
impulse current generator
BL024 0-2500A /
Quality Inspection and Test Center for
Equipment of Electric Power
2008-05-25
8 D.C. reference voltage tester
0100 0-6kV Class 1 National High-Voltage Measurement Station
2007-06-09
9 LCD-4 resistive current tester
008 0-10mA 3% National High-Voltage Measurement Station
2007-04-05
10 TDS1002
oscilloscope C048918 0-300V 2%
Hubei Test Technology Academe
2006-08-23
11 HAEFELY64M
peak value voltmeter
080452-24-88
0-1600V Class 1 National High-Voltage Measurement Station
2007-06-01
Quality Inspection and Test Center for Equipment (2006) No. 070 of Electric Power Inspection Report
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12 JFD-2B partial
discharge tester 98020 / 0.5pC
National High-Voltage Measurement Station
2008-05-14
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