ncsx ncsx cdr may 27 2005 s. ramakrishnan slide 1 electrical power systems (wbs 4) s. ramakrishnan...
TRANSCRIPT
NCSX CDRMay 27 2005
S. RamakrishnanSlide 1
NCSX
Electrical Power Systems (WBS 4)
S. RamakrishnanNCSX CDR
May 27 2005
NCSX CDRMay 27 2005
S. RamakrishnanSlide 2
NCSX
Electrical Power System Requirements
• Provide Source of all Electric Power for NCSX– All AC Power
• At all Distribution Voltage levels» 4.16kV,480V, 208/120V» Includes Experimental AC Power» Includes AC Power to NB» Includes all Auxiliary AC Power up to Power Panels
– All DC Experimental Power• Provide DC power for stellarator coil systems
– 3 Modular, 1 TF, and 5 PF coil circuits» PS requirements based on Initial Ohmic Scenario» Clear path for future upgrades (other scenarios,
flexibility)
• Provide Diagnostics support for Sensor cabling• Grounding
NCSX CDRMay 27 2005
S. RamakrishnanSlide 3
NCSX
PPPL Site Plan
NCSX C-Site Location
NCSX Control Room Location
NCSX CDRMay 27 2005
S. RamakrishnanSlide 4
NCSX
C-Site Power Supplies
• C-site Rectifier power supplies used for Coil circuits
– Six (6) Robicon Rectifier Supplies. Each of (2) 6-pulse, 2-quadrant converters in parallel - 12-pulse rectified DC output.
– One (1) PEI Rectifier Supply. Two 6-pulse rectifier bridges in parallel - 12-pulse DC output
• Sufficient power available for First Phase
• Future upgrades with D-Site Supplies
NCSX CDRMay 27 2005
S. RamakrishnanSlide 5
NCSX
Power Supplies Assignment
1st plasma & Magnetic Configuration (2/2009)
Circuit Power SupplyCurrent
1.5s / 180sVolts CW (MW)
M1+M2+M3 P20 20kA 500V 10
TF P5-3 (5kA unit) 5kA 300V 1.5
PF1,2 P5-1+ P5-4 5kA 300V+300V 1.5
1.5
PF3 P5-2 5kA 300V 1.5
PF4 PEI 5kA 500V 2.5
PF5 None NA NA NA
PF6 P10 10kA 200V 2
NCSX CDRMay 27 2005
S. RamakrishnanSlide 6
NCSX
Typical Circuit Arrangement Contd.
• Disconnect and grounding switches provided for each circuit
• Existing cables used from Rectifier Supplies to Disconnects in Test Cell Basement
• New Cables (4/c- 500mcm, 600V) from Disconnects to the Bus Stubs in the Tunnel
• Current/ Voltage transducers provided• Changeover to CDX possible by disconnecting
cables at top of Disconnects.
NCSX CDRMay 27 2005
S. RamakrishnanSlide 7
NCSX
PS Control and Coil Protection
• PLC will be provided for Hardwired Controls– Modern PLC based system– Additional interlocks as needed– Coil protection will be provided
• Instantaneous overcurrent• Ground fault• Timed overcurrent• I2t limit
Electrical Power System Costs
System Start Finish Labor M&S Total
411 - Auxiliary AC Power Jan-05 Jan-07 $258,515 $123,515 $382,030
412 - Experimental AC Power Oct-06 Feb-08 $41,214 $6,929 $48,143
431 - C-site AC/DC Converters Oct-04 Mar-07 $319,797 $134,345 $454,142
441 - Electrical Interlocks Oct-06 Nov-08 $252,217 $125,447 $377,664
442 - Kirk Key Interlocks Oct-06 Nov-07 $33,708 $48,475 $82,183
443 - Real Time Control Apr-07 Nov-07 $14,271 $14,271
444 - Instrumentation Oct-06 Dec-07 $197,474 $115,180 $312,654
445 - Coil Protection Oct-05 Nov-07 $452,426 $69,677 $522,104
451 - System Design Apr-03 Nov-08 $520,501 $520,501
452 - Electrical Systems Support Oct-06 Mar-08 $257,580 $4,156 $261,736
453 - System Testing Oct-06 Mar-08 $275,996 $48,723 $324,719
460 - April-Sept MIE Cost Apr-03 Sep-03 $1,300 $1,300
TOTAL $2,624,998 $676,447 $3,301,445
NCSX CDRMay 27 2005
S. RamakrishnanSlide 9
NCSX
Conclusions
• Using existing C-site Rectifier supplies for First Plasma is cost-effective for powering NCSX coils
• Existing AC power distribution system at C-site will feed other loads & have been used for PBX/PLT
• Technical & cost risks is minimal – Since this is standard electrical work– Cost is based on industry feedback & PPPL experience
on past projects– Is performed by experienced personnel. – Careful planning will mitigate schedule risk– Highest priority to Personnel Safety
NCSX CDRMay 27 2005
S. RamakrishnanSlide 10
NCSX
TF & PF1,2 FEEDS
NCSX CDRMay 27 2005
S. RamakrishnanSlide 11
NCSX
PF3, 4, & 6 FEEDS
NCSX CDRMay 27 2005
S. RamakrishnanSlide 12
NCSX
MODULAR COIL FEED