Alfredo Gallegos, FES Manager, 10 y 11 de Noviembre 2009 Indoor Substations Suministro Eléctrico Sustentable Congreso Bienal Internacional

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1 Alfredo Gallegos, FES Manager, 10 y 11 de Noviembre 2009 Indoor Substations Suministro Eléctrico Sustentable Congreso Bienal Internacional November 13, 2009 Slide 1

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 November 13, 2009 Slide 2

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 November 13, 2009 Slide 3

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 November 13, 2009 Slide 4

5 Engineer problems facing an Indoor Substation Transformer Noise HV Over Head Lines Incoming Easy Access to Power Transformers Heat Dissipation November 13, 2009 Slide 5

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 November 13, 2009 Slide 6

7 MALTE - up to 72.5 kv Complete pre-fabricated AIS substation November 13, 2009 Slide 7

8 MALTE - up to 72.5 kv Complete 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 November 13, 2009 Slide 8

9 MALTE - up to 72.5 kv Complete pre-fabricated AIS substation Interior from HV-module HV-cables connection to Power transformer. November 13, 2009 Slide 9

10 MALTE - up to 72.5 kv Complete pre-fabricated AIS substation Summary High availability (equipment indoor) Small footprint ~100 m 2 (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 November 13, 2009 Slide 10

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 November 13, 2009 Slide 11

12 HV Module LTB Compact November 13, 2009 Slide 12

13 URBAN up to 170 kv Site built indoor AIS substation Before renewal 145 kv AIS After renewal 145 kv AIS November 13, 2009 Slide 13

14 URBAN up to 170 kv Site built indoor AIS substation November 13, 2009 Slide 14

15 URBAN up to 170 kv Site built indoor AIS substation Portable maintenance stand mounted on CB truck CB truck can easily be exchanged using a fork lift November 13, 2009 Slide 15

16 URBAN up to 170 kv Site 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. November 13, 2009 Slide 16

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 November 13, 2009 Slide 17

18 HV Module - PASS November 13, 2009 Slide 18

19 HV Module - PASS Polymeric Bushings Breaker TC Mechanism Line / Earth Disconnector November 13, 2009 Slide 19

20 Indoor AIS 138kV Substation Eletropaulo/SP 138 kv Substation in Sao Paulo, Brazil. 3 x 40 MVA Transformers Available Footprint 35 x 35 mt2 Shopping Iguatemi Jockey Club Subestação Itaim November 13, 2009 Slide 20

21 GRAMA PISO DRENANTE - UTILIZAR PARALELIPÍPEDOS DO EXISTENTE PARALELEPIPEDO E D C B A CX e suas variáveis TR3 TR2 TR NA+101,8m NA+101,8m NA+101,8m SA PORTA (piso zero) PORTA SA2 ACESSO ESCADA S rampa sobe (i=14,5%) média PORTA PORTA VARIAVEL BANCO DE BATERIAS 1-125V S. BATERIAS BANCO DE BATERIAS 2-125V PORTA NA+102,3m MANUTENÇÃO DO DISJUNTOR NA+102,5m PORTA S CONJUNTO BLINDADO 3 CONJUNTO BLINDADO 2 CONJUNTO BLINDADO BL NA+102,5m TR1 BCAP DER INTERL FUTURO BCAP5 TR3 TR3 BCAP FUTURO DER INTERL FUTURO BCAP3 TR2 TR2 BCAP FUTURO DER INTERL FUTURO BCAP1 TR MURO - H=3,00 m Itaim Substation Layout Área disponibilizada MURO - H=3,00 m CX Subestação existente 101, BL BL BL November 13, 2009 Slide 21

22 Substation Layout November 13, 2009 Slide 22

23 Itaim Substation Layout November 13, 2009 Slide 23

24 Itaim Substation Layout November 13, 2009 Slide 24

25 Indoor AIS 138kV Substation Eletropaulo/SP Itaim Substation November 13, 2009 Slide 25

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 November 13, 2009 Slide 26

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 November 13, 2009 Slide 27

28 Underground GIS substation People have their say People were involved in the design of the surrounding park November 13, 2009 Slide 28

29 Underground GIS substation Barbana GIS Substation layout and configuration November 13, 2009 Slide 29

30 GIS Substation 145 kv Substation in Rio de Janeiro - Leblon 3 x 40 MVA Transformers Available Footprint 25 x 25 mt2 November 13, 2009 Slide 30

31 Substation Leblon: Plant Layout November 13, 2009 Slide 31

32 Substation Leblon: Plant Layout November 13, 2009 Slide 32

33 Substation Leblon: Plant Layout November 13, 2009 Slide 33

34 Substation Leblon: Plant Layout Fotomontagem November 13, 2009 Slide 34

35 Substation : LIGHTDistribution Utility GIS SS Leblon November 13, 2009 Slide 35

36 Substation : LIGHTDistribution Utility GIS SS Leblon November 13, 2009 Slide 36

37 Substation : LIGHTDistribution Utility GIS SS Leblon November 13, 2009 Slide 37

38 Summary Cost Comparison Equipos/Montaje/Ing Obras Civiles Total Cost Conventional S/E 70% 30% 100% Indoor S/E 60% 40% 130% Erection time AIS/GIS solution around 1.5 to 2 years November 13, 2009 Slide 38

39 Summary Main Benefits No visual Impact (Community) Reduce Footprint Potential surplus Land* Reduced Outages Improve company image Increase Reliability Reduce Maintenance November 13, 2009 Slide 39

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 November 13, 2009 Slide 40

41 November 13, 2009 Slide 41