© ABB Group November 13, 2009 | Slide 1
Indoor SubstationsSuministro Eléctrico SustentableCongreso Bienal Internacional
Alfredo Gallegos, FES Manager, 10 y 11 de Noviembre 2009
© ABB Group November 13, 2009 | Slide 2
Agenda
Introduction
Utilities challenges and requirements
Example of Indoor substations
MALTE - Complete pre-fabricated AIS substation up to 72.5 kV
URBAN - Site built indoor AIS substation up to 170 kV
Truly invisible GIS substations for all voltage levels
Summary
© ABB Group November 13, 2009 | Slide 3
Reasons to migrate from Outdoor to Indoor Substation
Substations built years ago outskirt the city and today are
surrounded by residential and commercial areas
Consequences are:
Pressure to Minimize visual impact
Incidents of people entering the Substations
Important land cost
Increase pressure of availability
© ABB Group November 13, 2009 | Slide 4
Requirements on Substations from neighbors
Open air substation not so nice aesthetic,
want power without seeing it
Originally outskirt of city, now surrounded
by residential buildings, offices, shopping
centers, hotels etc.
Acoustic problem from humming of power
transformers
Third party safety, especially children
playing
Station modularized and as much as
possible pre-manufactured
No substation fence and yard, building
itself give the “shell” protection
Underground-in and underground-out, i.e.
cable to first line tower in case of OH-line
bays
Site work as little and short as possible,
saves cost, shorten overall delivery time
and minimize disturbance to neighbors
during site activities
© ABB Group November 13, 2009 | Slide 5
Engineer problems facing an Indoor Substation
Transformer Noise
HV Over Head Lines Incoming
Easy Access to Power Transformers
Heat Dissipation
© ABB Group November 13, 2009 | Slide 6
Agenda
Introduction
Utilities challenges and requirements
Example of Indoor substations
MALTE - Complete pre-fabricated AIS substation up to 72.5 kV
URBAN - Site built indoor AIS substation up to 170 kV
Truly invisible GIS substations for all voltage levels
Summary
© ABB Group November 13, 2009 | Slide 8
MALTE - up to 72.5 kVComplete pre-fabricated AIS substation
Transformer foundation and
oil pit
Only one precast foundation
for the whole substation,
function also as oil pit
Power Transformer put in
place
© ABB Group November 13, 2009 | Slide 9
MALTE - up to 72.5 kVComplete pre-fabricated AIS substation
Interior from HV-module
HV-cables connection to
Power transformer.
© ABB Group November 13, 2009 | Slide 10
MALTE - up to 72.5 kVComplete pre-fabricated AIS substation
Summary
High availability (equipment indoor)
Small footprint
~100 m2 (1/3 of traditional)
Land preparation minimized, all equipment pre-fabricated
Short time at site (~2 weeks)
connection to network
commissioning
Low maintenance cost
Can easily be moved
Personnel and third party safe
© ABB Group November 13, 2009 | Slide 11
Agenda
Introduction
Utilities challenges and requirements
Example of Invisible substations
MALTE - Complete pre-fabricated AIS substation up to 72.5 kV
URBAN - Site built indoor AIS substation up to 170 kV
Truly invisible GIS substations for all voltage levels
Summary
© ABB Group November 13, 2009 | Slide 13
URBAN – up to 170 kVSite built indoor AIS substation
Before renewal
145 kV AIS
After renewal
145 kV AIS
© ABB Group November 13, 2009 | Slide 15
URBAN – up to 170 kVSite built indoor AIS substation
Portable maintenance
stand mounted on CB truck
CB truck can easily be
exchanged using a fork lift
© ABB Group November 13, 2009 | Slide 16
URBAN – up to 170 kVSite built indoor AIS substation
Medium Voltage switchgear
Yellow reflective stripe on floor for emergency evacuation, instead of battery lighting.
Better and more nature friendly solution
Control Room
Back-up relay and control
equipment in same physical
hardware.
© ABB Group November 13, 2009 | Slide 17
Agenda
Introduction
Utilities challenges and requirements
Example of Invisible substations
MALTE - Complete pre-fabricated AIS substation up to 72.5 kV
URBAN - Site built indoor AIS substation up to 170 kV
Truly invisible GIS substations for all voltage levels
Summary
© ABB Group November 13, 2009 | Slide 19
Mechanism
Polymeric Bushings
Breaker
TC
Line / Earth
Disconnector
HV Module - PASS
© ABB Group November 13, 2009 | Slide 20
Jockey Club
Shopping Iguatemi
Subestação Itaim
Indoor AIS 138kV Substation – Eletropaulo/SP
138 kV Substation in Sao Paulo, Brazil.
3 x 40 MVA Transformers
Available Footprint 35 x 35 mt2
© ABB Group November 13, 2009 | Slide 21
Subestação
existente
Área
disponibilizada
BCAP6
TR1
111
105
101
INTERL
DER
BCAP5
TR3
104
107
FUTURO
112
BCAP4
TR3
FUTURO
110
100
FUTURO
DER
INTERL
106
TR2
BCAP3
108
BCAP2
TR2
FUTURO
109
103
FUTURO
DER
INTERL
102
TR1
BCAP1
CO
NJU
NT
O B
LIN
DA
DO
3C
ON
JUN
TO
BL
IND
AD
O 2
CO
NJU
NT
O B
LIN
DA
DO
1
TR
2T
R1
TR
3
SA1 SA2
NA+101,8m
NA+101,8m
NA+102,5m
S.
BA
TE
RIA
S
BA
NC
O D
E B
AT
ER
IAS
1 - 1
25V
MA
NU
TE
NÇ
ÃO
DO
DIS
JU
NT
OR
BA
NC
O D
E B
AT
ER
IAS
2 - 1
25V
NA+101,8m
1 2 3 4
A
B
C
D
E
ACESSO ESCADA
PO
RT
A
PORTA
PO
RT
A
PORTAPORTA
PORTA
NA+102,5m
NA+102,3m
CX
BL BL
GRAMA
BL
CX
BL
102.30 (piso zero)
101.52
101.436 101.068101.302 101.191
101.52
S
ram
pa
so
be
(i=
14,5
%)
101.80
PARALELEPIPEDO
PISO DRENANTE - UTILIZAR PARALELIPÍPEDOS DO EXISTENTE
102.25 e suas variáveis
101.80 101.80
100.862
100.814
101.20
101.127101.127
S
VARIAVEL
MURO
- H=3,00 m
MU
RO
-
H=
3,0
0 m
102.25
méd
ia
102.30
102.30
102.25
102.30
102.25
101,80
102.30
Itaim Substation Layout
© ABB Group November 13, 2009 | Slide 25
Itaim Substation
Indoor AIS 138kV Substation – Eletropaulo/SP
© ABB Group November 13, 2009 | Slide 26
Agenda
Introduction
Utilities challenges and requirements
Example of Invisible substations
MALTE - Complete pre-fabricated AIS substation up to 52.5 kV
URBAN - Site built indoor AIS substation up to 170 kV
Truly invisible GIS substations for all voltage levels
Summary
© ABB Group November 13, 2009 | Slide 27
Underground GIS substation
Barbana GIS Substation
Underground GIS substation
Waterfall for “hiding”
transformer humming
Waterfall enrich visual and
audible perception of park
Water also used for
transformer cooling via heat
exchanger
Complete bay modules from
factory for fast and easy work
at site
Environmental friendly
Personnel and third party safe
© ABB Group November 13, 2009 | Slide 28
Underground GIS substation
People have their say
People were involved in the design of the surrounding park
© ABB Group November 13, 2009 | Slide 29
Underground GIS substation
Barbana GIS Substation
layout and configuration
© ABB Group November 13, 2009 | Slide 30
GIS Substation
145 kV Substation in Rio de Janeiro - Leblon
3 x 40 MVA Transformers
Available Footprint 25 x 25 mt2
© ABB Group November 13, 2009 | Slide 38
Summary
Cost Comparison
Erection time
AIS/GIS solution around 1.5 to 2 years
Equipos/Montaje/Ing Obras Civiles Total Cost
Conventional S/E 70% 30% 100%
Indoor S/E 60% 40% 130%
© ABB Group November 13, 2009 | Slide 39
Main Benefits
No visual Impact (Community)
Reduce Footprint
Potential surplus Land*
Reduced Outages
Improve company image
Increase Reliability
Reduce Maintenance
Summary
© ABB Group November 13, 2009 | Slide 40
ABB Experience in Brazil
In operation
Energia Sao José - Manaus
Light - Light Leblon
Copel - Uvaranas
Electropaulo - Itaim
Petrobras - Repar
In Construction
Light - Light Copacabana
Copel - Capim Siqueira
Copel - Pilarzinho
Copel - Jardim Bandeirantes