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