Event Log for 2018-03-20

  1. 10:00 GT12 start command; FSNL at 10:12 (rotor earth fault test).
  2. 10:31 GT12 synchronized; load increase to base load.
  3. 10:44 Base load (150 MW); start of C-991  (100% load).
  4. 13:41 Load reduction to 110 MW (75% load).
  5. 14:34 Load reduction to 75 MW (50% load), C-938.
  6. 15:47 Load reduction to 5 MW.
  7. 15:55 Load increase to base load, fast gradient (C-931 ).
  8. 16:08 Load reduction to 5 MW.
  9. 16:19 Load increase to base load, normal gradient (C-931 ).
  10. 16:35 Automatic GT shut-down initiated.
  11. 16:49 GCB opened (de-synchronized).

Event Log for 2018-03-19

  1. 09:43 GT12 start-up by SGC, flame-on at 09:50, synchronized at 09:55 (GCB).
  2. 10:00 UCB opened for dummy snchronization.
  3. 10:42 UCB closed (synchronized to busbar 1).
  4. 11:05 Bus bar change-over and related switching actions in HV switchyard.
  5. 11:33 UCB closed (synchronized to busbar 2).
  6. 11:33 Load increase, change-over to premix mode & further load increase to base load.
  7. 11:49 GT12 at premix base load.
  8. 14:41 Load reduction to 5 MW, normal gradient (start load ramp).
  9. 14:51 Load increase to base load, fast gradient (BL @ 15:01, load ramp completed).
  10. 15:12 Start of gradual load reductions.
  11. 16:38 Load @ 5 MW.
  12. 16:40 GCB opened (de-synchronized).
  13. 16:40 GT12 tripped by CCR emergency push button (intended test).

Event Log for 2018-03-17

  1. 08:56 GT12 ramp-up to 4,7 Hz for compressor wash test (by SFC).
  2. 09:03 GT12 speed increase to 10 Hz for compressor wash test.
  3. 09:50 GT12 start-up by SGC, flame-on at 09:57.
  4. 10:02 Synchronized to grid by GCB.
  5. 10:15 Underexcitation test (limit test): reactive power to -80 MVar @ 5 MW.
  6. 10:25 Load increase to 40 MW & stepwise further increase to base load.
  7. 10:53 First base load in diffusion mode (150 MW).
  8. 13:35 Load reduction stepwise (20MW @ 14:02).
  9. 14:03 Change-over from diffusion to premix mode initiated.
  10. 14:05 Change-over diffusion – premix completed; load 35 MW.
  11. 14:05 Load increase; 120 MW @ 14:14.
  12. 14:46 First base load in premix mode (152 MW).
  13. 14:58 Load reduction to 5 MW.
  14. 15:15 GT12 de-synchronized, GCB opened, GT @ FSNL.
  15. 15:22 GT12 tripped by surge protection (intended test).

Event Log for 2018-03-13

  1. 11:10 GT12 start-up initiated by SGC.
  2. 11:22 GT @ FSNL.
  3. 11:26 Start of GT governor control checks @ FSNL; completed @ 11:50.
  4. 11:50 Start of test Operation of GT with FSNL; completed @ 12:20.
  5. 13:09 Start of AVR test @ FSNL & Open/short circuit tests.
  6. 15:50 Dummy synchronization.
  7. 15:50 Synchronization of GT12 in manual mode, load setpoint 5 MW.
  8. 16:03 Synchronization of GT12 in auto mode, load setpoint 5 MW; GCB opened at 16:06.
  9. 16:26 Synchronization of GT12 in auto mode, load setpoint 5 MW.
  10. 16:30 Load increase stepwise > 80 MW @ 16:40; load reduction to 5 MW.
  11. 17:07 De-synchronized (GCB opened).
  12. 17:07 GT12 trip by emergency push button (intended test).

Event Log for 2018-03-12

  1. 15:40 GT12 start-up initiated by SGC.
  2. 15:47 Flame on.
  3. 15:51 GT @ FSNL.
  4. 16:00 Start of short circuit test (HV Switchyard).
  5. 17:15 Short circuit test completed.
  6. 17:30 GT12 trip on overspeed @ 50,5 Hz (intended test).

Event Log for 2018-02-27

  1. 10:02 GT13 start-up initiated by SGC.
  2. 10:17 GT synchronized by GCB, load set point 5 MW; stepwise load increase to base load.
  3. 10:53 GT @ base load (152 MW).
  4. 11:05 Start of PSS optimisation.
  5. 13:29 Load reduction to 10 MW > load ramping.
  6. 15:26 Load @ 5 MW; increase to base load & back to 5 MW >  load ramp, slow gradient - 11MW/min.
  7. 16:10 Load @ 5 MW; increase to base load & back to 5 MW >  load ramp, fast gradient – 15MW/min.
  8. 16:53 GT13 de-synchronized (GCB opened); GT @ FSNL.
  9. 16:59 GT trip by high GN bearing casing vibration – intended test.

Event Log for 2018-02-19

  1.  10:59 Preparations started for repeat of black start-up test (C-915).
  2. 12:42 Black-out conditions established > MV income breaker & HV Unit CB opened.
  3. 12:42 Start of black start diesel generators.
  4. 12:43 MV bus bars supplied by BSDGs.
  5. 12:48 GT11 turning gear started, T/G speed, 2,0 Hz @ 12:54.
  6. 13:02 GT11 start initiated by SGC, FSNL @ 13:15.
  7. 13:16 GCB closed, 13:19 MV incomer CB closed.
  8. 13:30 GT11 synchronized by unit CB.
  9. 13:33 BSDGs shut-down > C-915  completed.
  10. 13:38 Load increase to 50 MW.
  11. 14:26 GT11 shut-down initiated, GCB opened @14:31.

Event Log for 2018-02-16

  1.  10:16 Start of Black Start Diesel Generator (BSDG) 1 & connection to MV-supply leading to start of test “Black start-up of GT”.
  2. 10:29 Start of BSDG 3 & connection to MV-supply.
  3. 10:36 GT11 started by SGC, flame on @ 10:43.
  4. 10:48 GT11 @ FSNL, GCB closed @ 10:51.
  5. 10:59 BSDGs synchroniyed to GT11 generator & CBs opened – BSDGs de-synchronized; “Black start-up of GT” completed.
  6. 11:02 Stepwise load increase to base-load.
  7. 11:32 Base load reached (149 MW).
  8. 12:02 HCO activated (on “main”) & start of base load test run for collection of base-load data.
  9. 15:05 Change-over test fuel gas metering lines – C/O from TM24 to OM21.
  10. 15:12 Change-over test fuel gas metering lines – C/O from OM21 back to TM24.
  11. 15:29 Load reduction to 5 MW initiated.
  12. 15:44 GT11 de-synchronized from grid, GCB opened & start of HV bus bar change-over & “dead bus" energizing” tests.
  13. 16:56 GT11 shut-down.

Event Log for 2018-02-12

  1.  11:30 GT11 started by SGC & start of test “Start-up of GT11 with SFC of GT13” (B-723), Flame on @11:41.
  2. 11:44 successful completion of test B-723.
  3. 11:46 GT11 synchronized, set point 5MW; stepwise load increase to base load.
  4. 13:20 GT11 base load achieved to determine Pmax.
  5.  14:00 GT11 load reduction to 75MW, start of primary frequency response tests (C-940).
  6. 16:48 Successful completion of tests C-940; GT at base load.
  7. 17:17 GT11 load reduction initiated from base load; 5MW @ 17:31.
  8. 17:31 GT de-synchronized from grid, GCB opened.

Event log for 2018-02-09

  1.  09:36 GT11 started by SGC and FSNL @ 09:47.
  2. 10:12 GT synchronised set point 5MW, start of under excitation test @ 10:19.
  3. 10:48 Load increased to 40MW.
  4. 13:15 Load increased to 120 MW and base load @ 13:53.
  5. 14.01 Completion of under excitation test.
  6. 14:02 Start of reactive power capability test.
  7. 14:27 Load reduced to 100MW.
  8. 15:13 Load increase initiated to base load reached @ 15:16 (149 MW).
  9. 17:15 Load reduction initiated to 120MW reached @ 17:18.
  10. 17:28 Over-excitation limit activated.
  11. 17:47 Load reduced to 80MW. Completion of reactive power capability test.