A second

Thyristor Controlled Static Var Compensator for SPS

Karsten KAHLE, TS-EL

TS Workshop, Archamps 24. – 26.5.2005

Karsten KAHLE, TS-EL

TS Workshop, Archamps 24. – 26.5.2005

1. Introduction2. Purpose of SVC3. SPS Electrical Network4. Project description5. Planning / Budget6. Conclusions

A second Thyristor Controlled Static Var Compensator for SPS

Intro. Purpose Network Project Planning Conclusions

1. Introduction

History:

- Renovation of BE substation (2001)

- Installation of new SVC2 (2001)

- now: SVC3 (1976) is obsolete and needs replacement

SVC3:

- Existing SVC3 is based on Saturated Reactor technology

- new SVC3 will be Thyristor Controlled Reactor (TCR)

- company ABB Sweden (contractual Option for second TCR)

Intro. Purpose Network Project Planning Conclusions

1. Introduction

Existing installation SVC3

Intro. Purpose Network Project Planning Conclusions

1. Introduction

Obsolete

Saturated Reactor

Intro. Purpose Network Project Planning Conclusions

1. Introduction

Future Thyristor Controlled Reactors

HV Thyristors Reactors

PurposeIntro. Network Project Planning Conclusions

2. Purpose of SVC

-Voltage stabilization 18 kV (400kV)

* disturbances due to pulsating load

- Harmonic filtering

* harmonics generated by power converters

- Compensation of Reactive Power taken from 400 kV grid

* reactive power consumed by power converters / magnets

Without SVC

- SPS cannot operate

- CERN would disturb 400 kV European Network

without SVC with

SVC

Voltage variation 18 kV: 14 % 0.75 %

Harmonics (>50 Hertz): 20 % 0.5 %

Reactive Power variation: 90 Mvar 10 Mvar

2. Purpose of SVC

PurposeIntro. Network Project Planning Conclusions

EHT2400/18kV 90MVA

EHT3

European Grid 400 kV

EHT1400/18kV 90MVA

400/18kV 90MVA

Year 1974

SPS SPS

400 kV

18 kV

Year 2001Year 2006

(Year 1976)

T1 T2 T3

SVC1 SVC2 SVC3

3. SPS Electrical Network 2007

NetworkIntro. Purpose Project Planning Conclusions

EHT2400/18kV 90MVA

EHT3

European Grid 400 kV

EHT1400/18kV 90MVA

400/18kV 90MVA

Year 1974

SPS SPS

400 kV

18 kV

Year 2001 Year 2006

T1 T2 T3

SVC1 SVC2 SVC3

2008

SVC1 SVC3

NetworkIntro. Purpose Project Planning Conclusions

3. SPS Electrical Network

4. Project description

ProjectIntro. Purpose Network Planning Conclusions

- dismantling of Saturated Reactor

- dismantling of building, modif. concrete platform (CE)

- new pre-fabricated building (ABB)

- Thyristor Controlled Reactors (ABB)

- cooling water supply for thyristors (CV)

- new outdoor filter installation (TS-EL)

- controls, protection, optical fibres etc. (TS-EL)

4. Project description

Dismantling of reactor building

ProjectIntro. Purpose Network Planning Conclusions

Recuperation of Capacitors (value 1 MCHF)and Civil Engineering (500 kCHF)

ProjectIntro. Purpose Network Planning Conclusions

4. Project description

filter capacitors

Recuperation of busbar system (value 200 kCHF)

ProjectIntro. Purpose Network Planning Conclusions

4. Project description

filter reactors

filter resistorsbusbars

Q1 / 2005 Start of project

Q1 / 2007 SVC3 ready for SPS operation

Q4 / 2007 Modification of BE substation (inversion)

Q1 / 2008 SVC’s and BE substation ready

??? Dismantling of second Saturated Reactor

Budget for SVC Project: 6 Mio.CHF

Planning ConclusionsIntro. Purpose Network Project

5. Planning / Budget

• First new SVC and BE substation for SPS in 2001

• Now: second SVC, ready for 2007 (identical Option, ABB)

- replacement of obsolete Saturated Reactor

- then: 2 identical modern SVC’s for SPS

- SVC2 and SVC3: proven technology, industrial solution

high reliability, fast repair

ConclusionsPlanningIntro. Purpose Network Project

6. Conclusions

2007: SPS Network Ready for LHC Era

Questions ?

Thank you.

ConclusionsPlanningIntro. Purpose Network Project