W E S T E R N E L E C T R I C I T Y C O O R D I N A T I N G C OU N C I L

JSIS Report for PCC

Donald Davies for Dmitry Kosterev, JSIS Chair

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W E S T E R N E L E C T R I C I T Y C O O R D I N A T I N G C OU N C I L

JSIS Activities• Oscillation Modes – embarking upon studies to

relate oscillatory modes, damping to system conditions including flow levels for various simulated systems

• Oscillation Analysis – review current system events. Review plots from PMU for interesting behavior

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W E S T E R N E L E C T R I C I T Y C O O R D I N A T I N G C OU N C I L

JSIS Activities• Improve Data Quality– Correct issues– Tools to detect and handle bad data including

Linear State Estimator• Operations and Engineering Analysis tools

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W E S T E R N E L E C T R I C I T Y C O O R D I N A T I N G C OU N C I L

JSIS Activities• Presentation from Peak, GE, WECC regarding

Simulations with Westwide System Model (WSM) Cases– WSM (West-wide System Model) – node-breaker model

used by Peak to run RTCA and next day studies;– WSM Cases including dynamics data are posted in at

PeakRC.org for operating entities to download. • Cases can be loaded into PSLF to provide for planner access

including dynamics studies

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W E S T E R N E L E C T R I C I T Y C O O R D I N A T I N G C OU N C I L

Simulations with WSM• Results– April 28th – PDCI loss– May 28th – Garrison-Taft line reclosing;– June 17th –Chief Jo brake test;

At 6:06 PDCI tripped, RAS activated dropping 1708 MW in Pacific Northwest

System Frequency dropped to 59.784 Hz Sequence of events from BPA (not official):– 4.553 sec – PDCI pole 3 power change from 827 to 489 MW– 4.553 sec – PDCI pole 4 power change from 827 to 508 MW– 5.333 sec - PDCI pole 3 and 4 power change to 0 MW– 5.667 sec – insert Fort Rock series capacitors– 5.733 sec – RAS gen.drop

Additional comments: Poles 1 and 2 out; Olinda CB3096 closed (cap in), CB 5492 open

(reactor out) Tracy CB 1292 and 2292 opened (caps out) 3592

closed (reactor in), CB 1392 and 2392 closed (caps in)

April 28, 2015 Disturbance

RAS gen. drop:–

April 28, 2015 Disturbance

RAS: GCL CKT2 254RAS: GCL CKT3 149RAS: CHJ PH4 146.7RAS: CHJ PH5 190.3RAS: CHJ PH6 498.2RAS: MCN LINE1 40RAS: MCN LINE2 45RAS: MCN LINE3&4 133.6RAS: MCN LINE5 144RAS: TDA PH3 52RAS: TDA PH6 56

PSLF simulation (WSM node-breaker) vs. PMU – Preliminary Results

Celilo

Results using updated dynamic model (inclusion of BPA updates and UEL);

MALIN Voltage

Results using updated dynamic model (line Vincent Midway tripped);

Additional shunt switching needs to be modeled:• Olinda 500 kV CB3096 closed (capacitor in) and CB 5492 opened (reactor out)• Tracy 500 kV CB 1292 and 2292 opened (caps out) and 3592 closed (reactor in)• Tracy 500 kV CB 1392 and 2392 closed (capacitors in in)

Results using updated dynamic model (inclusion of BPA updates and adding UEL and removing line Vincent Midway);

Summerlake-Hemingway flow

Results using updated dynamic model (inclusion of BPA updates and adding UEL and removing line Vincent Midway);

COI Flow

Results using updated dynamic model (inclusion of BPA updates and adding UEL and removing line Vincent Midway);

GARRISON-TAFT Flow

Results using updated dynamic model (inclusion of BPA updates and adding UEL and removing line Vincent Midway);

NAVAJO Voltage (5 kV difference between SCADA and PMU), HASSYYAMPA ( 8 kV difference between SCADA and PMU),

Results using updated dynamic model (inclusion of BPA updates and adding UEL and removing line Vincent Midway);

Results using updated dynamic model (inclusion of BPA updates and adding UEL and removing line Vincent Midway);

Results using updated dynamic model (inclusion of BPA updates and adding UEL and removing line Vincent Midway);

Results using updated dynamic model (inclusion of BPA updates and adding UEL and removing line Vincent Midway);

Results using updated dynamic model (inclusion of BPA updates and adding UEL and removing line Vincent Midway);

Case will be posted at peakrc.org; We can start using WSM snapshots in

node breaker format (we have tool, PMUs, cases);

Results are reasonable, we need more simulations to gain more confidence and to improve models;

It is much faster to prepare case;

April 28, 2015 Disturbance

May 28, 2015 Disturbance Here is what do we see from PMU data:

About 12:38:50.65 – Taft voltage jumps 25-kV, Garrison jumps only about 8-kV, no MW flow on Garrison – Taft #2, no MVAR flow on Garrison end, 500 MVAR flow from line to bus at Taft end – clearly line is energized at Taft

About 12:38:53.9 – looks like line is closed from Garrison About 12:38.54.45 – looks line opened at Garrison About 12:39:08.35 – line closed again at Garrison About 12:39:09.05 – line opened again at Garrison

Peak did not see action of PCBs on Garrison side since there was maintenance on this breakers so ICCP was probably disabled;

PSLF simulation (WSM node-breaker) vs. PMU

PSLF simulation (WSM node-breaker) vs. PMU

PSLF simulation (WSM node-breaker) vs. PMU

PSLF simulation (WSM node-breaker) vs. PMU

PSLF simulation (WSM node-breaker) vs. PMU

• Chief Joseph Brake Inerstion • Four insertion on June 17, 2015;• Cases will be posted on peakrc.org;

June 17 Chief Joseph Brake

Results:

Results:

Results:

Results:

Results:

Results:

Results:

Results:

Results:

Results: