NERC Inverter-Based Resource (IBR) Webinar
Series:
Session 5: Modeling Part 1 – Modeling Requirements, Model Creation, Model Usability
June 20, 2023
RELIABILITY | RESILIENCE | SECURITY
Modeling Part 1 -
Modeling
Requirements,
Model Creation,
Model Usability
1. SOFTWARE
2. GRID EXPERIENCE
3. MODEL VALIDATION
4. ADAPTABILITY
5. CHALLENGES
Presentación comercial
1. SOFTWARE P0-E Offers Modeling support for the following programs
Software
• DIgSILENT Power Factory
• PSCAD
• PSS/E (WECC and User Defined)
• PSLF
• EMTP-RV
• TSAT-SSAT
• EMTP-ATP
• ANATEM
Presentación comercial
2. GRID CODE EXPERIENCE
• USA
• Australia
• España
• Portugal
• Alemania
• Francia
• UK
• Japón
• Omán
• Jordania
• México
• Brasil
• Uruguay
• Bolivia
• Argentina
• Chile P-E tries to proactively maintain model compliance but
• Egipto
It is challenging to track proposed updates in the US and
• Tailandia
• Vietnam worldwide
Presentación comercial
4. MODEL VALIDATION
SW UWM GENERIC Application
DIgSILENT Static studies
Power Factory Dynamic studies (RMS)
WECC: Dynamic studies (RMS)
PSS/E
Dynamic studies (RMS)
PSCAD Dynamic studies (EMT)
EMTP-RV Dynamic studies (EMT)
PSLF WECC: Dynamic studies (RMS)
Presentación comercial
• P-E provides general purpose models that must be
parametrized for site specific conditions.
• The Power-Electronics Grid Team is based in Valencia, Spain
and can assist with modeling issues and project specific
requirements
• Power-Electronics uses it’s world-wide experience in places like
Chile and Australia to advance the US modeling work
• P-E inverter models are benchmarked again our Hardware-in-
the-Loop
HIL PSCAD
Presentación comercial
¡THANKS!
9 RELIABILITY | RESILIENCE | SECURITY
Facility Model Creation
and Usability
Roadblocks
Billy F. Yancey III
VP Technical Services and Compliance
June 20, 2023
NERC IBR Webinar Series
Facility Model Creation Process
The facility model creation process is an iterative process with interaction between multiple parties, i.e., Developers,
OEMs, EORs, Consultants, etc.
Preliminary Design Bridging the gaps towards seamless preliminary design to interconnection
Interconnection Request
request.
Request for Information S G Model Creation Distribution
Distribution
Model Testing and
and Review Benchmarking
Balance of Plant Design Steady State Model (PSSE/PSLF) ERCOT Model Quality Test
Voltage control strategy of plant Short Circuit Model (Aspen) PJM Model Testing
Generator models (PSSE, PSLF, Dynamic Model (PSSE/PSLF/TSAT) ISO-NE Model Testing (PP 5-6)
TSAT, PSCAD, Aspen, etc.) Transient Model (PSCAD) HECO Model Testing standards
IEEE P2800 requirements
Facility Model Creation Process
The request for information and review can be a time-consuming process. This is where critical assumptions are
sometimes made that can have significant impacts on projects and could lead to need to restudy during the
interconnection process or even further down the road during commissioning.
RFI Challenges
Request for Information
and Review BOP Design Generator Models
Typically, very preliminary and Depending on requirements
Balance of Plant Design subject to change leading to within a region, dynamic and
Voltage control strategy of plant assumptions transient models may take
Generator Models (PSSE, PSLF, TSAT, Inverter selection is still extended time to provide due
PSCAD, Aspen, etc.) being negotiated and to availability of necessary
finalized controls
Power Plant Controller (PPC)
is most of the time not even
in the discussion at this point
Facility Model Creation Process
Model creation is typically an iterative process. The assumptions made during the request for information gathering
are pre-tested to ensure they meet the necessary requirements and additional equipment/ controls are not needed
before moving to full model testing and benchmarking.
Model Creation Challenges
S G Model Creation Steady State Model (PSSE/ PSLF) Short Circuit Model (Aspen)
MPT sizing and OLTC control Utilities requested IBRs to be
Need for additional reactive modeled as current limited
Steady State Model (PSSE/PSLF) devices generators
Short Circuit Model (Aspen) Quantity of IBRs and OEM Moved to Voltage control
Dynamic Model (PSSE/PSLF) selection current source (VCCS)
Transient Model (PSCAD) Recently requested of
converter interface resources
(CIR)
Facility Model Creation Process
Model creation is typically an iterative process. The assumptions made during the request for information gathering
are pre-tested to ensure they meet the necessary requirements and additional equipment/ controls are not needed
before moving to full model testing and benchmarking.
Model Creation Challenges
Dynamic Model (PSSE/ PSLF/ TSAT) Transient Model (PSCAD)
S G Model Creation Control parameters set as default without any guidance on Similar concerns to dynamic model
tuning to meet requirements Some OEM documentation not clear on P
Minimal to no documentation related to tests to and Q initialization
Steady State Model (PSSE/PSLF) demonstrated compliance with latest requirements Some parameters are hidden as
Short Circuit Model (Aspen) Still concerns surrounding VRT response requirement compared to dynamic model and
Dynamic Model (PSSE/PSLF/TSAT) (ERCOT) adjustments for benchmarking can be
Transient Model (PSCAD) Protection settings set to default without ranges provided challenging
Hybrid PPCs
OEMs provide PPC with model even though it is not
available or typically installed.
No clarity on integrating external PPC
UDM vs GM
Thank You
16 RELIABILITY | RESILIENCE | SECURITY
Establishing Modeling Requirements
ATC’s Experience in MISO
P R E S E N T E D B Y:
Tom Dagenais
Director, System Planning - ATC
June 20, 2023
- ATC Proprietary - atcllc.com
Introducing ATC
• Wisconsin-based company
• Over 5 million electric
consumers in service area
• Over 500 employees
making sure you have the
energy you need, when
you need it
18 - ATC Proprietary - atcllc.com
ATC Service Territory Resource Interconnection Projects:
Queues 2019-2022
19 - ATC Proprietary - atcllc.com
PSS/E vs. PSCAD Analysis
PSS/E Simulation PSCAD Simulation
Plot looks stable in PSS/E but is
seen to be oscillating in PSCAD.
• PSCAD provides a much
more detailed look at what is
happening on the system
After adding a transmission system fix,
PSCAD also shows a stable result.
20 - ATC Proprietary - atcllc.com
Streamlining the Process: SCR
We can’t study everything… so we prioritize based on SCR and WSCR
• Short Circuit Ratio (SCR)
• Weighted Short Circuit Ratio (WSCR)
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Maintaining Reliability
• Reliability issues are real and are here today – and will become more
challenging in the future
• ATC among the first to include IBR requirements in our local planning criteria
• ATC has developed a PSCAD model
verification process to screen out modeling
issues before studies begin
Includes a checklist, process guide, and
PSCAD test component
Publicly available through ATCLLC.COM
• When more widely adopted, this will be seen
as a typical part of doing business
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23 - ATC Proprietary - atcllc.com
Feel free to reach out to us if
interested in participating in the NERC
IRPS or EMTTF!
24 RELIABILITY | RESILIENCE | SECURITY
