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Summary of Results of IEEE CFWG
Survey on the Analysis
of Cascading Outages
Cascading Failure Working Group of
IEEE PES Computer and Analytical Methods Subcommittee (CAMS)
Marianna Vaiman, V&R Energy
Milorad Papic, Idaho Power Co.
2015 IEEE PES General Meeting
July 27, 2015
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IEEE CAMS WG on Cascading Failures
• Initiated during 2007 IEEE PES GM:
– “To investigate new methods, technologies and tools in
order to better understand, predict, mitigate and restore
cascading failures. Sponsor technical sessions, tutorial
courses, workshops, conferences for effective exchange of
information on the state-of-the art, best practices,
procedures and strategies.”
• Chair: Milorad Papic, IPC, USA
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2015 IEEE CFWG Survey on Cascading
Analysis
• CFWG collaborated on conducting the survey with:
– IEEE Corporate - Strategic Research;
– North American Transmission Forum (NATF);
– North American Electric Reliability Corporation (NERC).
• CFWG would like to give special thanks to:
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Lesleigh Campanale, IEEE;
Ed Ernst, NATF;
Mark Lauby, Thomas Burgess and Amir Najafzadeh, NERC;
ALL OF THE RESPONDENTS TO THE SURVEY.
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Survey Overview
• Survey was conducted to better understand
current industry practices, state-of-the-art, and
needs in the area of cascading analysis
• CFWG collaboratively put together a list of 15
questions
• The survey was anonymous
• The survey was distributed by IEEE and NATF;
NERC also provided a separate response
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Survey Questions
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How often is the analysis of cascading outages performed in your organization?
In which domain does your organization study cascading events?
What are the main objectives for performing cascading outages analysis in your organization?
Is there a formal definition of cascading outage used in your organization?
Is cascading outage analysis an automated process?
Do you analyze cascading outages using steady-state analysis tools?
Do you analyze cascading outages using dynamic simulations?
Do you use historical outage data in your organization to analyze cascading outages and their
consequences?
Do you model or take into consideration the probabilities of initiating events?
Do you use the metrics/indicators to assess the effects of cascading outages?
Do you apply mitigation measures to alleviate consequences of cascading outages?
Is determining mitigation measures to alleviate consequences of cascading outages an automated
process?
Do you use synchrophasor data for prediction or analysis of system blackouts/cascading outages?
Are you satisfied with the currently available tools for analysis of cascading outages?
Are there any computations associated with cascading outages you feel present tools fail to
address?
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Survey Results
• Three sets of results:
– 248 usable responses through IEEE
– 10 usable responses by NATF members
– NERC coordinated response
• Results include:
– Statistics
– Comments
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Survey Results from IEEE
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Is there a formal definition of
cascading outage in your organization?
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What are the main objectives for
performing cascading outages analysis?
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How often is the analysis of cascading
outages performed in your organization?
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In which domain does your
organization study cascading events?
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Is cascading outage analysis an
automated process?
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How satisfied or not satisfied are you
with the tools available for analysis of
cascading outages?
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Survey Results from NATF
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Is there a formal definition of
cascading outage in your organization?
Source: NATF
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What are the main objectives for
performing cascading outages analysis?
Source: NATF
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How often is the analysis of cascading
outages performed in your organization?
Source: NATF
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In which domain does your
organization study cascading events?
Source: NATF
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Is cascading outage analysis an
automated process?
Source: NATF
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Are you satisfied with the currently
available tools for analysis of cascading
outages?
Source: NATF
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What would make you more satisfied/Are there any
computations associated with cascading outages you
feel present tools fail to address?
• Dynamic simulation of cascading outages which should include protection
system modeling
• Better solution algorithms/robust tools
• Automated/optimized mitigation measures
• Identifying and classifying widespread system area limitation versus local area
limitation
• Identifying and quantifying the risk of complicated cascades and large blackouts in
a way that allows these risks to be monitored and mitigated
• Having a screening tool
• Wide area visualization and analysis tools that can identify stress indicators early
and help operators take appropriate actions
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Conclusion
• CFWG is working on detailed analysis of the
results
• Will be submitting a paper on the survey results
Thank you to all survey participants and
facilitators!