A second Thyristor Controlled Static Var Compensator for SPS TS Workshop, Archamps 24. – 26.5.2005 A second Thyristor Controlled Static Var Compensator for SPS Karsten KAHLE, TS-EL 1. TS Workshop, Archamps 2004

A second Thyristor Controlled Static Var Compensator for SPS TS Workshop, Archamps 24. – 26.5.2005 A second Thyristor Controlled Static Var Compensator for SPS 1. Introduction 2. Purpose of SVC 3. SPS Electrical Network 4. Project description 5. Planning / Budget 6. Conclusions Karsten KAHLE, TS-EL 1. TS Workshop, Archamps 2004

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 Introduction History: Renovation of BE substation (2001) Installation of new SVC2 (2001) now: SVC3 (1976) is obsolete and needs replacement SVC3: - Existing SVC3 is based on Saturated Reactor technology new SVC3 will be Thyristor Controlled Reactor (TCR) company ABB Sweden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. TS Workshop, Archamps 2004

1. Introduction Existing installation SVC3 Intro. Purpose Network Project Planning Conclusions 1. TS Workshop, Archamps 2004

1. Introduction Obsolete Saturated Reactor Intro. Purpose Network Project Planning Conclusions 1. TS Workshop, Archamps 2004

1. Introduction Future Thyristor Controlled Reactors Reactors HV Thyristors Intro. Purpose Network Project Planning Conclusions 1. TS Workshop, Archamps 2004

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 Purpose Intro. Network Project Planning Conclusions 1. TS Workshop, Archamps 2004

2. Purpose of SVC without SVC with SVC Voltage variation 18 kV: 14 % 0.75 % Harmonics (>50 Hertz): 20 % 0.5 % Reactive Power variation: 90 Mvar 10 Mvar Without SVC - SPS cannot operate - CERN would disturb 400 kV European Network Purpose Intro. Network Project Planning Conclusions 1. TS Workshop, Archamps 2004

3. SPS Electrical Network 2007 400 kV T1 T2 T3 18 kV SPS SPS SVC3 SVC1 SVC2 Year 1974 Year 2001 (Year 1976) Year 2006 Network Intro. Purpose Project Planning Conclusions 1. TS Workshop, Archamps 2004

3. SPS Electrical Network 2008 400 kV T1 T2 T3 18 kV SPS SPS SVC3 SVC1 SVC2 SVC1 SVC3 Year 1974 Year 2001 Year 2006 Intro. Purpose Network Project Planning Conclusions 1. TS Workshop, Archamps 2004

4. Project description - 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) Project Intro. Purpose Network Planning Conclusions 1. TS Workshop, Archamps 2004

4. Project description Dismantling of reactor building Project Intro. Purpose Network Planning Conclusions 1. TS Workshop, Archamps 2004

4. Project description filter capacitors Recuperation of Capacitors (value 1 MCHF) and Civil Engineering (500 kCHF) Intro. Purpose Network Project Planning Conclusions 1. TS Workshop, Archamps 2004

4. Project description busbars filter resistors filter reactors Recuperation of busbar system (value 200 kCHF) busbars filter resistors filter reactors Intro. Purpose Network Project Planning Conclusions 1. TS Workshop, Archamps 2004

Budget for SVC Project: 6 Mio.CHF 5. Planning / Budget 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 Conclusions Intro. Purpose Network Project 1. TS Workshop, Archamps 2004

6. Conclusions 2007: SPS Network Ready for LHC Era 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 2007: SPS Network Ready for LHC Era Conclusions Planning Intro. Purpose Network Project

Questions ? Thank you. Conclusions Planning Intro. Purpose Network Project 1. TS Workshop, Archamps 2004