pow con er ver ter warm bus bars

pow con er ver ter warm bus bars Energy Extraction Water cooled cables Power Converters and DC cables LHC - HC review Slide 1/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Introduction 1. 2. 3. 4. 5. Power converter reception tests and installation DC cable reception tests and installation Warm power tests without superconducting magnets Cold power tests with superconducting magnets Conclusion Power Converters and DC cables LHC - HC review Slide 2/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

LHC Power Converters SR 5 • 1700 converters with 98% underground UA 47 RR 57 Point • 5 750*60 A corrector converters SR 6 (0. 5 k. W)UA 63 Point 6 • 740*120 A&600 A Beam dump converters USC 55 UJ 56 UA 67 • 220*2 k. A&3. 25 k. A converters SR: Thyristor PCs for • 8*13 k. A MB converters (2. 6 MW) Point 4 RR 53 SR 4 UA 43 UJ 33 Point 3 SR 3 the warm magnets UA 27 ARC: 60 A corrector PCs SR 2 BA 7 SR 1 SM 18 RR 17 SR 8 SPS UA 83 UA 87 TI 2 UJ 16 Point 1 Point 7 RR: 2 k. A PCs 600 A PCs RR 77 RR 13 Injection TI 8 UJ 14 Injection Power Converters and DC cables LHC - HC review RR 73 BA 4 UA 23 Point 2 SR 7 Point 8 UA: 3. 25 k. A and 2 k. A PCs 600 A and 120 A PCs MB PCs Slide 3/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

LHC Power Converters LHC Power Converter Cooling System DC cables Intk Power Interlock Controller World. FIP (Iref) Power Part (Voltage Source) Vref FGC Dcct Power Converters and DC cables LHC - HC review DC cables Magnet AC Mains Supply Slide 4/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Power converter reception tests Power converter tests before installation Individual Tests at manufacturer premises Power Part (Voltage source) FGC Dcct Individual Tests at CERN Surface Halls Power Part (Voltage source) FGC Dcct Power Converters and DC cables LHC - HC review Converter Integration at CERN Surface Halls Power Part FGC Dcct LHC Power Converter (Current source) : Performance validation Slide 5/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

PC installation Power converters installation • the power converters are transported and installed in the tunnel without to be dismantled… Power Converters and DC cables LHC - HC review Slide 6/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

PC installation Power converters installation … except the main dipole power converter 2. 2 m 40 t Installation tests - By the specialists - In parallel with the short circuit tests 11 m Power Converters and DC cables LHC - HC review Slide 7/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

DC cables Installation and tests Water cooled cable tests and installation • The water cooled cables are not tested at CERN before their installation • After their installation, the water cooled cables are only tested • in pressure : 24 bars, 10 minutes • in insulation : 3 k. V DC with current leakage measurement Power Converters and DC cables LHC - HC review Slide 8/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Powering circuit Cooling system DC cable intk AC Main supply Power Converter Ctrl Room Magnet DC cables Energy Extraction Intk syst Warm power tests (EDMS 464458 & 573115) Cold power tests (EDMS 519716) Power Converters and DC cables LHC - HC review Slide 9/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Warm power tests 8 hours heat run tests for superconducting circuits • The objectives of this test are to valid • AC connexion of the power converter • Installation of power converter • Cooling of the DC cables • DC connexions between power converter, DC cables and discharge system • The magnet is replaced by a short circuit piece Hardware commissioning procedure EDMS 575406 Power Converters and DC cables LHC - HC review Slide 10/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Warm power tests 8 hours heat run tests for superconducting circuits • Requests • AC distribution • UPS • Water cooling system • Ventilation system • Short circuit pieces • Energy extraction system for the 13 k. A and 600 A with EE • PIC for the 13 k. A Power Converters and DC cables LHC - HC review Slide 11/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Warm power tests 8 hours heat run tests for warm magnets • The objectives of this test are to valid • AC connexion of the power converter • Installation of power converter • DC connexions between power converter, DC cables and magnet • Set up of the current loop • Power converter performance • For transfer line power converters, the TI 8 procedure is used Power Converters and DC cables LHC - HC review Slide 12/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Warm power tests 8 hours heat run tests for warm magnets • Requests • AC network • Interlock system • Magnet Power Converters and DC cables LHC - HC review Slide 13/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Warm power tests Interlock tests • The objectives of this test are to valid • Connexion between the interlock system and the power converter • Comportment of the different system (power converter, interlock system and energy extraction system) Control Test • The objectives of this test are to valid • The World. FIP (MUGEF for TL-PC) • The Field Control Room softwares • The Alarm system, Logging system and Post Mortem system Power Converters and DC cables LHC - HC review Slide 14/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Warm power tests 24 hours heat run test for superconducting circuits • The objectives of this tests are to valid • Global water cooling system • Global air conditioning system • Global AC distribution • Global control of power converters by the FCR Power Converters and DC cables LHC - HC review Slide 15/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Warm power tests Sector 78 Power Converters and DC cables LHC - HC review 10 weeks for a sector - 5 weeks for an UA - 3 weeks for a RR - 2 weeks for an arc Slide 16/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Cold power tests (EDMS 519716) Circuit type tests (60 A, 120 A, etc…) • First Powering tests (at minimum stable current) • Check the start of the power converter • Set up of current loop and verify the stability • Safety system • Intermediate current • Verify the current loop stability • Safety system • Nominal current • Power converter performance in current source Power Converters and DC cables LHC - HC review Slide 17/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Cold power tests Main dipole circuits • Main issues with the RB circuits • Starting of the power converter (> 20 s to go to the minimum current) • Setting current loop (noise of the current measurement) • Discharge system in the odd point • Recuperation mode • Safety system • Power converter performance in current source Power Converters and DC cables LHC - HC review Slide 18/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Cold power tests MQM circuits • Main issues with the MQM circuits • Starting of the 2 power converters • Setting current loop and verify the performance (resistive coupling) • Safety system 6 k. A Power Converters and DC cables LHC - HC review Slide 19/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Cold power tests Inner Triplet main quadrupole circuits Ipc 1 Iref 2 Ipc 2 Iref 3 Ipc 3 - - - RST RST Vref 1 Decoupling system Iref 1 (EDMS 531773) Vref 2 7 k. A Vref 3 ± 600 A Ipc 3 4. 7 k. A Ipc 1 Ipc 2 7 k. A Power Converters and DC cables LHC - HC review Slide 20/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Cold power tests Inner Triplet main quadrupole circuits • Test strategy • Test the 5 k. A circuit alone (inner power converter) • Test the 7 k. A circuit alone (outer power converter) • Test the 5 k. A + 7 k. A with decoupling loop • Test the 5 k. A + 7 k. A + 0. 6 k. A with decoupling loop • Set up of the current loops 7 k. A ± 600 A 4. 7 k. A Power Converters and DC cables LHC - HC review Slide 21/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Cold power tests First sector: 14 days for the 3 main circuits 16 days for the IT circuits 8 days for the other circuits Other sector: 7 days for the 3 main circuits 8 days for the IT circuits 4 days for the other circuits Power Converters and DC cables LHC - HC review Slide 22/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005

Conclusions 1. The power converters are tested before their installation but theses tests are limited not real load not real environment not with the other systems (PIC and World. FIP) 2. The DC cables are not tested before their installation not tests in power 3. The main circuits (RB and RQ) and Inner Triplet request a special attention Power Converters and DC cables LHC - HC review Slide 23/. . Hugues THIESEN – AB/PO Thursday, 12 May 2005