MVWG Report to TSSMVWG Report to TSSJanuary 2013January 2013

Stephanie Lu, MVWG ChairSeattle City Light

MeetingsMeetings HVDCTF Oct 26, 2012 PPMDTF Oct 31, 2012 REMTF Nov 5-6, 2012 MVWG Nov 6-7, 2012 LMTF Nov 8, 2012

Composite Load Model Workshops: Regional workshop at SCE Sep 9, 2012 TSS Webinars (2) in October 2012 Regional workshop at PacifiCorp in Salt Lake City Nov 6,

2012 Regional workshop at SRP in Tempe Jan 15, 2013 Regional workshop in San Diego TBD

Presentation OverviewPresentation Overview MVWG Approval Items

Renewable Generation Modeling

System Model Validation Generator Modeling, Testing, and Validation SVC Modeling HVDC Modeling Other items: SW Outage Report, RAS/Relay

Modeling, Program Updates Next Meetings and Workshops

MVWG Approval ItemsMVWG Approval Items

WECC Approved Dynamic Model Library WT1/WT2 Pseudo-governor model

specifications WT4 model specifications WT3 model specifications PV1X/PVD1 model specifications Wind and Solar Implementation Plan

Approved Dynamic Models ListApproved Dynamic Models List November 2012 Update

Updated PSSE SVSMO models to U2 versions

Latest version:WECC Approved Dynamic Model List

Motion: Approve Dynamic Model Library November 2012

Existing Phase 1 Wind Models Approved version 1 of wind generic models

implemented as library models in PSSE, PSLF and other platforms

Model Type WT1 WT2 WT3 WT4Generator WT1G WT2G WT3G WT4GEl. Controller WT2E WT3E WT4ETurbine/shaft WT12T WT12T WT3TPitch control WT3PPseudo Gov / aerodynamics WT12A WT12A

PSLF/17PSLF/17

PSSE/32PSSE/32

Model Type Type 1 Type 2 Type 3 Type 4Generator wt1g wt2g wt3g wt4gExcitation / Controller wt2e wt3e wt4eTurbine wt1t wt2t wt3t wt4tPitch Controller/Pseudo Gov. wt1p wt2p wt3p

Wind Phase 2 Wind Phase 2 Type 1&2 Model SpecificationsType 1&2 Model Specifications WT1/WT2 Pseudo-governor model

specifications approved by MVWG Nov 2012Pitch model redesigned to more accurately

represent the effects of pitch control actions of type 1 and 2 wind turbines

Good validation against two major wind turbine specific PSCAD models (Mitsubishi MWT1000A and Vestas V82)

Motion: Approve WT1 and WT2 pseudo-governor model specifications

Wind Phase 2 and Large-scale PV Model Names Use modular naming convention for WT3, WT4, and

PV1X modules since they use the same model structure

Module Use

REPC_A Renewable Energy Plant Controller

REEC_A, REEC_B Renewable Energy Electrical Controls

REGC_A Renewable Energy Generator/Converter model

WTGT_A Wind Turbine Generator Drive Train

WTGAR_A Wind Turbine Generator Aerodynamic Model

WTGPT_A Wind Turbine Generator Pitch Control Model

WTGTQ_A Wind Turbine Generator Torque Control Model

lhvrt, lhfrt Voltage/current Protection Model, Frequency Protection Model

WT3

PV1X

WT4

Wind Phase 2 and Large-scale PV Models

Q Control

P Control

Current Limit Logic

IqcmdIqcmd’

IpcmdIpcmd’

Generator Model

Network Solution

Plant Level V/Q Control

Plant Level P Control

VrefVreg

QrefQbranch

PrefPbranch

FrefFreg

Qext

Pref

PV1P

Pqflag

PV1E PV1GVt Vt

WT4 WT3

PV1X

9

Wind Phase 2 Wind Phase 2 Type 4 Model SpecsType 4 Model Specs WT4 model specifications

approved by MVWG Nov 2012 P/Q control model expanded to

include additional features such as reactive current injection during the fault

Plant level control model expanded to include addition of a simple droop control for emulating primary frequency control

Generator/Converter model expanded to include additional features such as rate limits on reactive current for recovery after the fault

Added a drive-train model Excluding plant level controls, validation work shows good

results for multiple manufacturers (Siemens, Vestas, ABB, and simulated cases from ENERCON)

Motion: Approve WT4 model specifications

Wind Phase 2 Wind Phase 2 Type 3 Model SpecsType 3 Model Specs

WT3 model specifications approved by MVWG Nov 2012 Identical to Type 4, with

the additional 3 modules: pitch control (added parameter Kcc) torque control (new) simplified aero-dynamic model

Initial validation with two vendors (ABB, Vestas) for three designs are good and acceptable

Motion: Approve WT3 model specifications

Solar PV Model SpecificationsSolar PV Model Specifications

PV1X Large scale solar model

PV1X is a full featured model based on the WECC Type 4 wind generation model

PVD1 PVD1 is a more basic model

than the Large PV plant model and is intended to represent the aggregate effect of distribution-connected PV at the transmission level

Q Control

P Control

Current Limit Logic

IqcmdIqcmd’

IpcmdIpcmd’

Generator Model

Network Solution

Plant Level V/Q Control

Plant Level P Control

VrefVreg

QrefQbranch

PrefPbranchFreq_ref

Freg

Qext

Pref

REPC_A

Pqflag

REEC_B REGC_AVt Vt

Iq

Ip

÷

Vt

N

D×

Q Priority (Pqflag =0)Iqmax = ImaxTDIqmin = -IqmaxIpmax = (ImaxTD2-Iqcmd2)1/2

P Priority (Pqflag =1)Ipmax = ImaxTDIqmax = (ImaxTD2-Ipcmd2)1/2

Iqmin = -Iqmax

÷

0

Ipmax

Iqmin

Iqmax

0.01

N

D

×

Vt0 Vt1 Vt2 Vt3

1

0

V0 V1

DqdvQmx

QmnQref

Vrflag

Freq

Ft0 Ft1 Ft2 Ft3

1

0

Frflag

Ip

Iq

It = Ip +j Iq

-11 + sTg

11 + sTg

Ipcmd

Iqcmd

PVD1

XcIt

Qref

-Freq_ref Ddn

fdbdPdrp

Pref

Pext

Pdrp

Fvl

Ffh

Ffl

MINIMUM

Fvh

FvlFfhFfl Fvh

Motion: Approve PV1X and PVD1 model specifications

PV1X/PVD1 model specifications

Wind Phase 2 and Solar Wind Phase 2 and Solar Implementation PlanImplementation Plan Wind and Solar Implementation PlanDescription Date

MVWG Approved Model Specifications November 2012

TSS Approve Model Specifications January 2013

Complete WECC-scale model testing with model prototypes March 2013

Complete development of models in software programs and make available to users, include inter-operability (between programs) capabilities

June 2013

Update Approved Dynamic Models List (add updated wind models and solar models, and remove superseded models) June 2013

MVWG to provide Application Guidelines with ‘typical’ data from major manufacturers July 2013

Workshop dedicated to wind and solar modeling Late Summer or Fall 2013

Issue request for entities to submit data using new models into WECC case Fall 2013

In the meantime prior to PV models getting approved, submit wt4 models for the WECC base case.

Motion: Approve Wind and Solar Implementation Plan

Distributed Generation ModelingDistributed Generation Modeling CMPLDWg

REMTF proposed a simplified version of PVD1 to be added to the CMPLDW to create a CMPLDWg model

Initial testing with PSLF beta version has been performed

More work is planned to simplify the CMPLDW model, and will be coordinated with LMTF, SRWG, NERC MVWG and the program vendors

Proposed CMPLDWg for dynamic modeling

CMPLDWg = CMPLDW + DG

• Simple version of PVD1

15

http://www.uwig.org:8080/index.php?title=Main_Page

Load Modeling Load Modeling (Discussed Yesterday)(Discussed Yesterday)

System Model ValidationSystem Model Validation

System Model ValidationSystem Model Validation A priority of M&VWG is to continue efforts on enabling

the ability to transfer information between the WSM and planning base cases to be used for stability studies and perform system model validation.

M&VWG has a contract with GE to convert the WECC dynamic database to an “element code” definition with WSM. This would be a one time effort, and allow validation studies to be done using the WSM powerflow case and the new dynamic data file. This will lead to the ultimate goal where the planning model will also use a node-breaker model.

M&VWG is participating in the newly created TSS WBRTF effort

MVWG conducted model validation studies for Palo Verde and Arlington generation outage that occurred on July 4, 2012, and Chief Joseph breaker insertion.

Correlation was good and the composite load model did not show significant difference from the ‘interim’ load model

System Model ValidationSystem Model Validation Eric Allen, NERC, provided an update that most of the

efforts identified under NERC MVWG are currently under SAMS.

One of the NERC priorities is for each interconnection to be able to quickly prepare a model validation base case following a disturbance event. This effort will support the goal to reduce this time from weeks to hours.

DOE and BPA have funded research work by University of Wisconsin in developing methods for power system model validation to better match features of events. Additional effort will be put into prony analysis of the disturbance event.

Generator Modeling, Testing, Generator Modeling, Testing, and Model Validationand Model Validation

Synchronous Generator, Excitation Synchronous Generator, Excitation and Turbine Control Modelsand Turbine Control Models Power Plant Model Data Task Force

OEL, UEL and generator protection models

Thermal governor modeling

Hydro governor model hyg6d

Power Plant Model Validation

Power Plant Model Data Task Force Reviewed the list of suspected errors identified and

discussed at the PPMDTF conference call. Each item was assigned for follow up with the data owners to correct or verify the data that is suspect. If there are additional errors suspected, continue to send them to

Kent. Data checking and processing of new data

John Undrill provided a demo of the tool, which is continually being improved with new checks, delaying the user interface improvements

“DataCheckingConversionProgram.zip” is available on the WECC website in two locations

MVWG > PPMDTF > Documents Library > For Generators > Generator Testing Program

Excitation Models – OELExcitation Models – OEL IEEE working group expects to go to

ballot in 2013 with an OEL model (not the same as OEL1 and slightly different from IEEE OEL95)

More discussion is needed to determine which model WECC will recommend to be the approved OEL model

PSLF is continuing to connect the ES models with the OEL1 model

Excitation Models - UELExcitation Models - UEL UEL1 and UEL2 already exist Availability in the programs:

Available in PSSE version 32Will be available in next release of PSLFWill be implemented in PowerWorld

Thermal Governor Model

Revision of the thermal governor recommendation may be needed to reflect the appropriate participation from gas turbines based on the latest disturbance validation

Additional review to be performed

Hydro Governor Model

PSLF hyg6d model includes the model of the hydro-servo in Kaplan turbines

Model is being shared with PSSE and PowerWorld

Hyg6d is planned to be up for approval at the March 2013 MVWG meeting

Power Plant Model ValidationPower Plant Model Validation

Power Plant Model Validation (PPMV) version 1B using PSLF play-in function is available on the WECC website in the MVWG PPMDTF Documents site

It is encouraged to install more PMUs at power plant point of interconnections

SVC ModelingSVC Modeling

SVC Modeling Efforts successfully validated the generic

SVS models with six SVS installations in North America, including three in WECC

The SVSMV tool developed by EPRI to validate SVS models is available to the project sponsors

HVDC ModelingHVDC Modeling

HVDC Modeling The task force has started with the point-to-point

Conventional and Voltage Source Converter (VSC) HVDC models

A working draft of the document is in progress Conventional point-to-point HVDC

Powerflow model already exists, documentation is being improved

Dynamic model for rectifier and inverter has been implemented in PSSE and PSLF, testing has been started

VSC point-to-point HVDC Powerflow model has been implemented in PSSE, as a beta in

PowerWorld, and a beta version in PSLF is expected in first quarter 2013

A dynamic model has been proposed and implemented in PSSE, feedback expected in first quarter 2013

HVDC Modeling IPP DC Modeling

Model performance seems acceptable Trans Bay DC model still needs to be

validated PDCI Modeling

Sylmar model still needs to be validatedCelilo is expected to be replaced in 2016, the

updated model is in progress

General Caution: models need to be in the ‘right’ order to match the user-written epcl

Other ItemsOther Items

Other Items Eric Allen, NERC, presented the event

analysis of the Pacific SW Outage Disturbance

Reviewed the draft proposed scopes of work for RPSOTF and MSRATF

PSSE, PSLF, PowerWorld, and Powertech provided program updates

Next MeetingsNext Meetings

2013 Meetings2013 Meetings

Meeting Dates and Locations for M&VWG and REMTF:

March 26-28 in San Diego, hosted by SDG&E June 18-20 in Salt Lake City, hosted by WECC November 4-6 in Phoenix, hosted by APS

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

Upcoming WorkshopsUpcoming Workshops

Joint Workshop proposed for July 2013July 17-18 SRWG Workshop (2 half days)July 18-19 MVWG Workshop (2 half days)

Wind/Solar Modeling Workshop Fall 2013