MVWG Report to TSSAugust 2014

Stephanie Lu, MVWG ChairSeattle City Light

Recent Meetings REMTF Workshop June 17, 2014 MVWG Meeting June 18-19, 2014

Webinar Training on Frequency Response Validation Tool July 22, 2014

MVWG Conference Call August 12, 2014 May 16 2014 Event Validation Report

PPMDTF Conference Call August 15, 2014

MVWG Activities Overview Approved Documents Renewable Energy Modeling System Model Validation Generator Modeling, Testing, and Validation RAS & Relay Modeling Status Update of Models Load Modeling HVDC Modeling Other items: NERC Updates, WECC Project Updates,

Program Updates Next Meetings and Workshops

MVWG Approved DocumentsFor TSS Information: Update to the Approved Dynamics Model List

Added wt1p_b (part of the 2nd generation wind models)

Update to the Typical Machine Data document Replaced 1st generation wind models with 2nd generation wind

models (see modeling guidelines) Added PV models (see modeling guidelines) Minor improvements to the hydro model section

Added accel parameter in gentpj model Changed the ks2 parameter in pss2a model to be Tw2/(2H)

Approved May 16 2014 Event Validation Report Current Differential Relay Model Specifications were

approved, but some abstained

Renewable Energy Modeling

Wind/Solar Implementation Plan

2nd Generation Wind Models

2nd Generation Wind Models SRWG Implementation Plan – Complete transition by

6/5/2015 Superseded models will be removed from Approved

Dynamics Model List on 6/5/2015

Exception: REMTF recommended removing wt1p and wt2p from the WECC Approved Model List immediately

Passive units should not have a pitch control model Active stall units should use wt1p_b REMTF will take the action to inspect the list and give

the recommendation of either deleting or replacing the wt1p and wt2p with wt1p_b

Photovoltaic Models For large-scale PV plants:

For distributed and small PV plants, use PVD1 model

SRWG Implementation Plan to be completed by 6/5/2015

REMTF – Next Steps Wind Type 3 torque controller model – reviewing a

proposal to keep the more complex model as a separate module

Distributed PV model in composite load model More discussion is needed between REMTF, program vendors

and LMTF to implement a distributed PV model in the composite load model CMPLDW

REMTF – Next Steps (cont.) Energy Storage Modeling

Progress report expected Nov 2014 Members requested a more expedited schedule because

interconnection requests of batteries are being received Encourage manufacturers to get engaged early in the model

development

Plant Level Control Modeling Expand plant control model to control multiple elements,

including different types of wind turbines, SVCs or STATCOMs, and MSCs

Investigate whether SVSMO3 can model hybrid SVC (contains both VSC and TSC)

System Model Validation

System Model Validation MVWG is continuing to improve the process to develop

future model validation cases Method 1: Planning base case and dyd Method 2: Using WSM case and dyd (PSLF v19)

Event Model Validation Efforts: May 16 2014 NW RAS Event – Completed May 26 2014 DC RAS Event – In progress

Planning Case & DYD

WSM Case & DYD

May 16 2014 NW AC RAS EventValidation Report

MVWG approved the “Model Validation Report for May 16, 2014 RAS Event”

Posted on website:WECC MVWG > Documents > Approved Documents

Includes simulations using both methods (Planning and WSM case)

May 16 2014 NW AC RAS Event Pre-contingency: John Day-Grizzly #2 and

Grizzly-Malin #2 500-kV lines were out of service

At 23:18:15: John Day-Grizzly #1 500-kV line tripped

to lock-out AC RAS gen.drop is initiated of about

2,500 MW at Grand Coulee, Wells, John Day, Biglow Canyon Wind and Dooley Wind

Chief Joseph braking resistor is operated

Few seconds later: Kemano RAS in BC operated and tripped unit # 1 with 110 MW

40 seconds later: Springerville unit #4 in Arizona tripped with ~425 MW due to boiler instability

23:20:30: John Day-Grizzly #1 500-kV line is restored back to service

1John Day-Grizzly

2 RAS Gen.Drop and Chief Joseph Brake

3Kemano RAS

4Springerville #4

May 16 2014 NW AC RAS Event

59.7

59.75

59.8

59.85

59.9

59.95

60

60.05

23:18:00 23:18:15 23:18:30 23:18:45 23:19:00 23:19:15 23:19:30 23:19:45 23:20:00 23:20:15 23:20:30 23:20:45

Frequency

NW RAS = 2,563 MW

Kemano = 110 MW

Springerville = 445 MW

John Day – Grizzly #1back in service

May 16 2014 NW AC RAS Event

0 10 20 30 40 50 60 70 8059.7

59.75

59.8

59.85

59.9

59.95

60

60.05

60.1

Time (sec)

Fre

qu

ency

(H

z)

Malin Frequency

0 10 20 30 40 50 60 70 8059.7

59.75

59.8

59.85

59.9

59.95

60

60.05

60.1

Time (sec)

Fre

qu

ency

(H

z)

Custer Frequency

ActualSimulated

ActualSimulated

0 10 20 30 40 50 60 70 8059.7

59.75

59.8

59.85

59.9

59.95

60

60.05

60.1

Time (sec)

Fre

qu

ency

(H

z)

Grand Coulee Frequency

0 10 20 30 40 50 60 70 8059.7

59.75

59.8

59.85

59.9

59.95

60

60.05

60.1

Time (sec)

Fre

qu

ency

(H

z)

Sylmar Frequency

ActualSimulated

ActualSimulated

Remarkable agreement of frequency response

Simulated versus Actual

May 16 2014 NW AC RAS EventWSM Simulation versus Actual

May 16 2014 NW AC RAS EventValidation Report Simulations matched actual recordings quite well Above NERC BAL-003-1 Frequency Response Obligation Recommendations:

Validate Generator Frequency Modeling Use tools available to validate frequency response and baseload flag

Expedite reconciliation of wind models in WSM and Planning cases Reconcile wind modeling

Model wind in dyd (many wind plants do not have dynamic models) Use 2nd generation wind models

Model Kemano RAS, Review Kemano RAS, and install PMUs BC Hydro to address recommendations

Chief Joseph Brake Modeling BPA to review security of Chief Joseph Braking Resistor, and provide model

Springerville owners to resolve issues with unit #4 trip

Generator Modeling, Testing, and Model Validation

Frequency Response Tool BPA Generator Frequency Response Tool is

available (uses PI data)

Frequency Response Tool Eric Bakie (IPCO) presented an improved

PI Data Generator Frequency Response Model Validation Tool (version 1) Incorporates PI data tool Incorporates PPMV tool for model validation Includes batch processing, for multiple units and multiple events Includes overview presentation and detailed user guide Webinar training was provided July 22, 2014

Good for unit level model validation This approach works for governor model validation Good tool for identifying undesired control behavior

Frequency Response Tool

Frequency Response Tool

Frequency Response Tool

Recent Disturbance EventsAs presented at the last meeting: Jan 29, 2014 @ 6:47:06 PT – Freq dropped to 59.75 Hz Jan 29, 2014 @ 7:03:58 PT – Freq dropped to 59.78 Hz Feb 2, 2014 @ 11:29:32 PT – Freq dropped to 59.87 Hz Feb 21, 2014 @ 10:14:16 PT – Freq dropped to 59.88 Hz Apr 9, 2014 @ 17:33 PT – Freq dropped to 59.92 Hz Apr 15, 2014 @ 05:46:00 PT – Freq dropped to 59.89 Hz Apr 15, 2014 @ 14:43:10 PT – Freq dropped to 59.85 Hz Apr 17, 2014 @ 16:21:03 PT – Freq dropped to 59.89 Hz Apr 21, 2014 @ 10:41:43 PT – Freq dropped to 59.87 Hz Apr 29, 2014 @ 05:23:28 PT – Freq dropped to 59.89 Hz

Recent Disturbance EventsEvents since the last meeting: May 16, 2014 @ 23:18:20 PT – Freq dropped to 59.73 Hz **

[NW AC RAS Event] May 26, 2014 @ 12:31:57 PT – Freq dropped to 59.81 Hz May 26, 2014 @ 17:32:01 PT – Freq dropped to 59.66 Hz **

[DC RAS Event] June 6, 2014 @ 3:37:41 PT – Freq dropped to 59.88 Hz June 12, 2014 @ 18:07:55 PT – Freq dropped to 59.83 Hz

[BCH RAS and Alberta Separation Event] June 14, 2014 @ 11:22:14 PT – Freq dropped to 59.90 Hz July 4, 2014 @ 3:14:33 PT – Freq dropped to 59.90 Hz

**MVWG is performing system model validation for the May 16th (completed) and May 26th events.

Power Plant Model Data Task Force Adding PC and TP for each item to spreadsheet with

list of suspected errors PLEASE REVIEW LIST AND ADDRESS ITEMS IN YOUR

AREA Modeling Data standard MOD-032-1 (steady-state,

dynamics, short circuit) BA, GO, LSE, RP, TO, TSP must respond to PC or TP if they

provide technical concerns with the data submitted (effective 7/1/2016)

Verification standards MOD-026-1 (Excitation Systems) and MOD-027-1 (Turbine/Governor) GO must respond to TP within 90 days if TP notifies GO that

model is not usable, provides technical concerns with the verification documentation, or provides evidence that the model did not match the recorded response to an event (effective 7/1/2014)

Power Plant Model Data Task Force MVWG will work with SRWG to incorporate additional

data checks into the base case review process Turbine type (ensure this is being populated) Baseload flag (review/verify that flag is populated and correct) Pmax (powerflow) should be less than mwcap (dynamics) Wind models (see SRWG implementation plan)

If there are additional errors suspected, continue to send them to Kent

Excitation Models Eric Bakie (IPCO) showed that not modeling UEL

impacts simulations UEL1 and UEL2 have been recommended to be higher in

priority for program implementation

IEEE Standard 421.5 on excitation models is close to going out for ballot More discussion will be needed to determine which model(s)

WECC will recommend to be the approved

Currently OEL1 is WECC approved

RAS & Relay Modeling

Relay Modeling Discussion Current Differential Relay Model Specifications were

approved, but some abstained “There is no or little value of deploying the current

differential relay and distance relay throughout the system.”

“It is good to make these models available in the software packages; however the need, cost, value, and increased database management, etc. for adding data collection requirements for all the new relay models to the WECC DPM have not fully been identified.”

More discussion is described in the MVWG Report to TSS

Status Update of Models

Status of Model DevelopmentModel Description Model Name Model Spec

Approved?User Guide Available?

WECC Approved?

Composite load model CMPLDW Need to post X X1st generation wind WTxx models X X XOver excitation model OEL1 PSLF Manual - XSVS models SVSMO1, 2, 3 X X XGenerator model GENTPJ X - XOvercurrent relay model LOCTI & TIOCRS X See Model Spec XVolt and freq ride through LHVRT, LHFRT - - XHydro turbine governor model H6B X - X2nd gen wind/1st gen PV RExx and WTGxx models X X XDistributed PV model PVD1 X X XDirectional Overcurrent relay TIOCRS (revision) X See Model Spec Distance relay model DISTRELAY X See Model Spec Differential relay model *NEW* DIFFRLYG and DIFFRLYS X See Model Spec Under excitation relays UEL1 & UEL2 IEEE 421.5

(2005)-

Excitation system models See IEEE 421.5 efforts Composite load model with DG Under development Colstrip ATR Under development (NWE) Generator protection Under development (MSRATF) Other See Approved Dynamics List X

Status Update of WECC Models document is posted on website

Status of Model Development Added NOTE: RAS Common Format has been

developed by TSS and has been implemented in PowerWorld and will be implemented in PSLF and PSSE. MATL and Bridger will be implemented using the common format.

Load Modeling

Load Modeling – Composite Load Model Data Tools Tools available on the TSS Base Cases website

in the Composite Load Model Tools folder Load Model Data Tool LMDT4A

“2012 WECC CMPLDW.zip” Updated Load Composition Data

“CMPLDW Load Composition Data_032514.zip” PNNL Tool to create PSSE dyr format

“LMDT_install.zip”

Load Modeling –CMPLDW Phase 2 Update Results may be pessimistic due to point on wave

sensitivity SCE has installed PQube devices on distribution circuits BPA has installed microPMUs on distribution circuits LBNL is providing PQube devices to those who will

install them and share the data Renewed interest in residential and commercial building

load composition

Load Modeling – CMPLDW Monitoring Improvements Specifications are being written to add these capabilities:

Requesting to add the ability to monitor load lost in CMPLDW models per area, zone, or owner so that we can track how much aggregated load is being shed

Request that otg-d format is compatible for both motorw and cmpldw models (otherwise you need to update the otg-d file with the new bus number for the cmpldw)

Request not to change the bus monitoring variable name so that it stays compatible with WCA analysis tools

Load Modeling – Voltage Dip Criteria Chuck Matthews (BPA), chair of WECC-0100 project,

provided an update Discussing transient voltage performance, voltage stability

criteria, steady state voltage limits and post contingency voltage deviations Chuck indicated that the project may need input from M&VWG on the

transient voltage performance criteria

Discussed whether the criteria should be a RBP or a guideline The majority of the project members prefer guideline

TPL-001-WECC-CRT-2.1 retirement on 12/31/2015

HVDC Modeling

HVDC Modeling

Multi-terminal conventional HVDC powerflow model – exists

Multi-terminal VSC HVDC powerflow model – now in beta version and being tested

Conventional HVDC dynamic model - in progress

VSC HVDC dynamic model - in progress

HVDC Modeling

Ongoing Issues Trans Bay DC model still needs to be validated PDCI Modeling

Sylmar model still needs to be validated Celilo is expected to be replaced in 2016, the updated model

is in progress

Other Items

Other Items

NERC Updates WECC Project Updates

Program Updates – PSLF, PSSE, and PowerWorld

NERC Updates Eric Allen (NERC) provided updates on NERC MWG

activities: Benefit analysis for node-breaker representation in off-line and

real-time study models Model validation field trial SW outage recommendations 5, 6, 7, & NERC2 on Seasonal

Assessment and sub-100 kV elements Standardized component models

More information available in NERC PC June 2014 Meeting Minutes

WECC Project Updates

WECC-0101 SAR Gen Validation Policy Drafting team chaired by Shawn Patterson USBR Comments received on draft variance was mixed Another draft is expected to incorporate comments:

Apply to BES generators Address re-testing period (5 vs 10 years)

WECC-0107 PSS Design and Performance Drafting team formed (consists of Control Work Group), chaired

by Martin Bauer USBR The drafting team is taking most of the existing PSS

requirements and putting it into a standard, but applicability is proposed to be changed to BES definition

Next Meetings & Workshops

Next Meetings & Workshops

November 18-20 in Albuquerque NM, hosted by Sandia National Laboratories REMTF Meeting -- Nov 18th afternoon & Nov 19th morning LMTF Meeting -- Nov 19th morning MVWG Meeting -- Nov 19th afternoon & Nov 20th all day

LMTF, HVDCTF and PPMDTF will meet independently from the main M&VWG meeting.

Questions ?

As MVWG LMTF Chair, “led the development of the recently implemented WECC composite load model”

As JSIS Chair, “led the development and implementation of WECC’s oscillation analysis tools that were deployed last year”

“he created disturbance base cases to validate the system model and generator models, leading to recommendations for model improvements”

“Not only is Dmitry an expert in his field, but he has also demonstrated a leadership role as he shares his knowledge with those around him”

“Dmitry has proven himself a major technical contributor at WECC”