Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator...
Transcript of Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator...
![Page 1: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/1.jpg)
www.nampower.com.na
"Our deepest fear is not that we are inadequate. Our deepest fear is that we are powerful beyond measure…”Nelson Mandela. South African Statesman , 1993 Nobel Prize for Peace, b.1918
Implementation of 220 kVIn-Service Insulator Performance
Test Tower in Namibia
Authors:
Dr WL VoslooF Engelbrecht
N HegerDr JP Holtzhausen
![Page 2: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/2.jpg)
Beulah Sepo LimboNampower: Assistant EngineerMasters: Electrical Engineering
University of Stellenbosch
![Page 3: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/3.jpg)
Introduction
Walmund 220 kV Test Tower
Swakopmund
Walvis Bay
![Page 4: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/4.jpg)
Walmund Insulator Performance Test Tower
![Page 5: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/5.jpg)
Design of the Test Insulators for Phase A,B,&C
A1: Manufacturer A, SR, 20mm/kV,S/P=1.6, no corona ring.A2:Manufacturer B, EPDM, 25mm/kV,S/P=0.9, with corona ring.A3:Manufacturer A, SR, 25mm/kV,S/P=1.1,no corona ring.B1:Manufacturer C,SR,25mm/kV,S/P=1.3,no corona ring.B2:Manufacturer C,SR,25mm/kV,S/P=1.3,with corona ring.B3: Manufacturer C,SR,25mm/kV,S/P=1.3,with corona ring.C1:Manufacturer B,SR,25mm/kV,S/P=0.9,with corona ring.C2:Manufacturer B,SR,25mm/kV,S/P=0.9,with corona ring.C3:Reference,Glass,fog type, cap and pin,25mm/kV,form factor=10.3,no corona ring.
![Page 6: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/6.jpg)
Walmund Substation with the Insulator Test Tower
![Page 7: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/7.jpg)
Walmund Insulator Test Tower
![Page 8: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/8.jpg)
Insulator Test Tower for One Phase
![Page 9: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/9.jpg)
Walmund Insulator Test Tower
Commissioned on the 31st March 2006.Recommissioned on the 9th June 2006.
![Page 10: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/10.jpg)
Objectives of the Walmund Insulator Test Tower
1. Compare A1 with A3 to determine the effect that different Specific Creepage Distance and S/P ratio has on the Insulator.
2. Compare A2(EPDM) with C2(SR) to find out the effect that different materials have on the performance of the Insulators.
3. Compare A3 with B1 and B3 with C1 to find out how SR Insulators from different manufacturers behave.
4. Compare B2 with B3 and C1 with C2 to determine the effect that horizontal and vertical orientation has on the Insulators.
5. Compare B1 with B3 to see the effect that corona rings have on the performance of the Insulator.
6. C3 is a referenced horizontal, glass cap and pin disk string.
![Page 11: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/11.jpg)
Walmund Substation
Experienced Pollution FlashoversInsulators were greased with siliconeInsulators were coated with RTV SR.CT’s have Scd = 18 mm/kV.For diameters above 500mm, the effective Scd is given as 14.4 mm/kv.
![Page 12: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/12.jpg)
Walmund Substation
![Page 13: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/13.jpg)
Walmund Substation
![Page 14: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/14.jpg)
Walmund Substation
![Page 15: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/15.jpg)
Pollution Monitoring
Directional Dust Deposit Gauges (DDDG)
Insulator Surface Conductivity Monitor (ISCoM)
![Page 16: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/16.jpg)
Climate Monitoring
Accumulated RainfallRelative HumidityTemperatureWind Speed and DirectionUVB Solar Radiation
![Page 17: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/17.jpg)
Data captured at Walmund Insulator Test Tower
Pollution Data Climate DataLeakage Current Data
![Page 18: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/18.jpg)
Pollution Data
![Page 19: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/19.jpg)
ISCoM Surface Conductivity
Max = 1.9 SAvg = 1.5 Sµ
µ
![Page 20: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/20.jpg)
Climate Data
![Page 21: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/21.jpg)
Average Relative Humidity vs Time of Day plot
![Page 22: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/22.jpg)
The Average Maximum Absolute Leakage I peak
![Page 23: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/23.jpg)
Maximum Leakage Current on the Glass Disk(C3)
![Page 24: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/24.jpg)
Maximum Leakage Current for EPDM (A2)
![Page 25: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/25.jpg)
Maximum Absolute Leakage Current Peak for A2 &C2
![Page 26: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/26.jpg)
Accumulative Resulting Charge on Insulators A2 & C2
![Page 27: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/27.jpg)
Accumulative Resulting Charge for Insulators B2 & B3
![Page 28: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/28.jpg)
Conclusions
A 220 kV Insulator Performance Test Tower has being implemented.The First series of data shows promising results.The effect of Material Choice and Insulator Orientation is well demonstrated.The data obtained correlates with the Results obtained from Clansdale Insulator Performance Test Tower in Natal.
![Page 29: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/29.jpg)
Recommendations
Data should continuously be captured for at least 10 years so that the effect of Material Ageing can be investigated.The data should be entered into the the Insulator Selection Tool Program every 2 years.This is to aid Namibia with Insulator Selection for the Power Network.
![Page 30: Implementation of 220 kV In-Service Insulator … Substation Experienced ... A 220 kV Insulator Performance Test Tower has being implemented. ... PowerPoint Presentation Author: judith](https://reader031.fdocuments.us/reader031/viewer/2022021501/5ad157097f8b9a05208b9312/html5/thumbnails/30.jpg)
Thank You!!!!!!!!