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M E M S A

M E M S A. Mining Electrical Maintenance and Safety Association. CLEARWATER, FL September 5, 2002. FULLY AUTOMATIC BACKUP GENERATOR SYSTEM. Larry Casson Drummond Co. Inc. METHODS OF APPLYING POWER GENERATORS. STAND ALONE GENERATOR(S)

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M E M S A

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  1. M E M S A Mining Electrical Maintenance and Safety Association CLEARWATER, FL September 5, 2002

  2. FULLY AUTOMATIC BACKUP GENERATOR SYSTEM Larry Casson Drummond Co. Inc.

  3. METHODS OF APPLYING POWER GENERATORS • STAND ALONE GENERATOR(S) • One or more generators provide all the real power (KW) and reactive power (KVAR) required by the load. Paralleling generators require KW and KVAR sharing. • BASE LOADING • One or more generators providing constant real output power (KW) and reactive power (KVAR). May be expressed as power (KW) and power factor (PF).

  4. GENERATOR # 1 GENERATOR # 2 34,500 VOLTS 4160 VOLTS OVERHEAD LINE # 1 OVERHEAD LINE # 2

  5. POWER IN KW UNLOADING TRAIN WITH DUAL CAR DUMPER AND POSITIONING CARS WITH A TRAIN CAR INDEXER

  6. MANUAL SWITCH TO GENERATORS MANUAL SWITCH TO INCOMING POWER

  7. BASICS

  8. POWER TRIANGLE KVA KVAR Included angle KW PF = COS of included angle = KW/KVA

  9. POWER TRIANGLE Base loading KVAR Voltage regulator KW Throttle

  10. 4 POWER QUADANTS + KVAR REVERSE POWER PROTECTION REQUIRED + KVAR Producing - KW + KW -KVAR Absorbing - KVAR

  11. UNDERGROUND14,400 VOLT SYSTEM ONE GENERATOR RUNNING KW KVAR

  12. WHY USE GENERATORS • BACKUP POWER SYSTEM • REDUCE POWER SYSTEM LOADING • HELP STABILIZE VOLTAGE

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