1. MVWG Report to TSS January 2013
Stephanie Lu, MVWG Chair
Seattle City Light

2. Meetings 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

3. Presentation 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

4. MVWG 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

5. Approved 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

6. Existing Phase 1 Wind Models
Approved version 1 of wind generic models implemented as library models in PSSE, PSLF and other platforms
PSLF/17
PSSE/32

7. Wind Phase 2 Type 1&2 Model Specifications
WT1/WT2 Pseudo-governor model specifications approved by MVWG Nov 2012
Pitch 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

8. 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

9. Wind Phase 2 and Large-scale PV Models
WT4
WT3
PV1X 9 9

10. Wind Phase 2 Type 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

11. Wind Phase 2 Type 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

12. Solar PV Model Specifications
PV1X/PVD1 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
Motion: Approve PV1X and PVD1 model specifications

13. Wind Phase 2 and Solar Implementation Plan
Wind and Solar Implementation Plan
Description
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)
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

14. Distributed 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. 15

16. Load Modeling (Discussed Yesterday)16

17. System Model Validation17

18. System 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 18

19. System 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. 19

20. Generator Modeling, Testing, and Model Validation20

21. Synchronous Generator, Excitation and 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 21

22. 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

23. Excitation 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 23

24. Excitation Models - UEL
UEL1 and UEL2 already exist
Availability in the programs:
Available in PSSE version 32
Will be available in next release of PSLF
Will be implemented in PowerWorld 24

25. 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

26. 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

27. Power 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 27

28. SVC Modeling 28

29. 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

30. HVDC Modeling

31. 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

32. 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 validated
Celilo 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

33. Other Items 33

34. 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

35. Next Meetings 35

36. 2013 Meetings Meeting Dates and Locations for M&VWG and REMTF:
March in San Diego, hosted by SDG&E
June 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.

37. Upcoming Workshops Joint Workshop proposed for July 2013
July SRWG Workshop (2 half days)
July MVWG Workshop (2 half days)
Wind/Solar Modeling Workshop Fall 2013