Bushing Group
Bushing Group
Bushing Group
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Resin Impregnated Paper condenser core bushings<br />
with fiberglass tube and Silicone rubber sheds<br />
<strong>Bushing</strong> <strong>Group</strong><br />
© E T HP BU
Locations<br />
• Customised solutions<br />
• High reputation in<br />
service business<br />
• Technology leader<br />
UHV AC<br />
TUK – Hebburn<br />
HSP - Cologne<br />
• Top of innovation<br />
• Technology leader<br />
• Market leader RIP AC/DC<br />
• Customised solutions<br />
TCN – Shenyang<br />
TCB – Toronto<br />
• Market leader in China<br />
• Proven technology<br />
OIP/RIP<br />
• High flexibility for<br />
customer demand<br />
• Strong in ANSI market<br />
• Short lead time<br />
TSF – St.<br />
Louis/Basel<br />
• High degree of<br />
standardisation<br />
• CoC - OIP<br />
Page 2<br />
Oct. 2010; Cigre meeting Santiago / Chile<br />
E T HP BU
Technologies for transformer bushings<br />
<strong>Bushing</strong> core, made of resin impregnated paper<br />
RIP core insulator (activ part)<br />
•crêpe insulating paper with condenser layered,<br />
dried under temperature and vacuum,<br />
impregnated under vacuum with epoxy resin.<br />
+ no oil losses possible<br />
+ no risk of fire (non-inflammable)<br />
+ no risk of explosions<br />
+ excellent seismic behaviour<br />
+ lower weight - easier handling<br />
+ lower long term costs<br />
+ oil and gas tight system<br />
+ no housing for oil end necessary<br />
+ operates with damaged housing temporarily<br />
+ core can be fixed to flange<br />
+ partial discharge free<br />
+ excellent ageing experience<br />
+ no loss of insulation media<br />
o max. temperature < 120 or higher<br />
- higher production costs<br />
RIP<br />
condenser layers<br />
Page 3<br />
Oct. 2010; Cigre meeting Santiago / Chile<br />
E T HP BU
Different technologies for outdoor end housing…<br />
Characteristics of composite insulators<br />
+ hydrophobic surfaces<br />
+ good characteristics under pollution<br />
+ high life expectancy<br />
+ low leakage current<br />
+ low manufacturing tolerances<br />
+ low weight - easier handling<br />
+ high mechanical stability<br />
+ elasticity in case of bending<br />
+ optimal solution for seismic stress<br />
+ no damage of splintering, no bursting<br />
+ no danger of scattering<br />
+ pressure resistant<br />
+ significantly shorter delivery times<br />
- high price<br />
Characteristics of porcelain<br />
+ smooth glazed surfaces<br />
+ surface leakage current resistant<br />
+ high life expectancy<br />
+ mechanical stability<br />
+ easy forming<br />
+ economically reasonable material<br />
+ low price<br />
- restricted bending strength<br />
- high manufacturing tolerances<br />
- sensitive with respect to temperature changes<br />
- high danger of scattering in case of bursting<br />
- restricted pressure resistance<br />
- low impact strength<br />
- long delivery times<br />
- high weight<br />
Page 4<br />
Oct. 2010; Cigre meeting Santiago / Chile<br />
E T HP BU
Composite insulator structure and secondary insulation<br />
dry material foam<br />
silicon sheds<br />
RIP active part<br />
aluminium<br />
cast flange<br />
Fiber glass reinforced<br />
laminate epoxy resin tube<br />
The Gap is filled with a dry material foam<br />
+ used for more than 20 years<br />
+ no compensation volume needed<br />
+ no ageing problems<br />
+ no leakage possible<br />
+ additional sealing effect<br />
+ no fire-danger in case of damage<br />
+ flexible in a wide temperature range<br />
Page 5<br />
Oct. 2010; Cigre meeting Santiago / Chile<br />
E T HP BU
Different technologies for outdoor housings…<br />
Composite insulators properties<br />
One of the major advantages of silicone<br />
polymer insulators over porcelain:<br />
High hydrophobicity over the whole lifetime !<br />
Surface is Water repellant & self cleaning<br />
...even through thick layers of contamination<br />
Page 6<br />
Oct. 2010; Cigre meeting Santiago / Chile<br />
E T HP BU
Seismic references<br />
For well over 20 years, Electric Utilities on the West Coast of the<br />
USA and Canada have used almost exclusively HSP RIP<br />
condenser core + composite insulator bushings.<br />
NO seismic event failure to any of those bushings.<br />
•BCTC & BC Hydro<br />
- 145,230,245,420,550 kV class<br />
•BPA Bonneville Power Administration<br />
- 196,230,550 kV class<br />
•PacifiCorp, Portland OR<br />
- 550 kV class<br />
• Nevada Power Company<br />
- 138,196 kV class<br />
•PG&E Pacific Gas and Electric Company<br />
- 69,123,138,196,230,550 kV class<br />
•SCE Southern California Edison<br />
- 230,550 kV class<br />
•LADWP Los Angeles Department of Water & Power<br />
- 196,230,550 kV class<br />
•SDG&E San Diego Gas & Electric<br />
- 230,550 kV class<br />
Page 7<br />
Oct. 2010; Cigre meeting Santiago / Chile<br />
E T HP BU
HSP`s Customer References<br />
Customer<br />
BC Hydro British Columbia Hydro<br />
BCTC British Columbia Transmission Company<br />
PacifiCorp, Portland OR<br />
PG&E Pacific Gas and Electric Company<br />
SCE Southern California Edison<br />
LADWP LosAngeles Depart.of Water & Power<br />
SDG&E San Diego Gas & Electric<br />
Contact<br />
Mr.Hanxin Zhu<br />
Phone: +001-604-5282314<br />
Mail: Hanxin.Zhu@BChydro.com<br />
Matt Weisensee<br />
Phone: +001-503-813-6901<br />
Mail: matthew.weisensee@pacificorp.com<br />
Ms Jennifer Yu<br />
Phone: +001-510-874-2628<br />
Mail: JQY1@pge.com<br />
Mr. Dong S. Kim<br />
Phone: +001.909.274.61677<br />
Mail: Dong.Kim@sce.com<br />
Mr. Bina Vatanpour<br />
Phone: +001.213.367.2212<br />
Mail: Bina.Vatanpour@ladwp.com<br />
Mr. Robert J. Mayer<br />
Phone: +001.858.654.1119<br />
Mail: RMayer@semprautilities.com<br />
Page 8<br />
Oct. 2010; Cigre meeting Santiago / Chile<br />
E T HP BU
West coast, USA; RIP 550 kV Transformer <strong>Bushing</strong>s<br />
Materials combination for high mechanic demands<br />
Materials combination<br />
for high mechanic<br />
demands<br />
Seismic test of a RIP-<br />
550kV-transformerbushing<br />
on the shake<br />
table in worst-case<br />
service position<br />
Seismic test reports\Seismic Test-<br />
Qualification Report SETFta 1800-550-<br />
2000 spez.pdf<br />
Specifications\SETFta 1800-550-2000<br />
spez (600258).pdf<br />
Time history test acc.<br />
to IEEE 693<br />
Seismic test according IEEE 693<br />
Page 9<br />
Oct. 2010; Cigre meeting Santiago / Chile<br />
E T HP BU
Yun-Guang, China; RIP 800 kV UHVDC Transformer <strong>Bushing</strong>s<br />
• Weight: 4 to<br />
• Length: 13500 mm<br />
This is the first bushing worldwide for 800 kV<br />
UHVDC transmission in RIP dry technology.<br />
Page 10<br />
Oct. 2010; Cigre meeting Santiago / Chile<br />
E T HP BU
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