IEEE Denver Section PES.IAS Chapter May 2019 Meeting
SUPPLEMENTING ANTI-ISLANDING PROTECTION APPLICATIONS
IN DISTRIBUTED GENERATION INTERCONNECTIONS
In certain low voltage distributed generation (DG) networks, inverters do not detect unintentional islanding caused by voltage imbalances. This condition violates IEEE-1547 requirements that the networks detect and isolate an island within two seconds of its formation. This paper provides practical application of phase loss detection to inverter protection schemes using transformer networks to address voltage drop considerations. In these applications, phase loss detection can be shielded by the addition of a transformer impedance network, preventing inverter isolation during low
generation conditions. Remote emergency stop initiation via current imbalance detection at the Point of Common Coupling (PCC) can be implemented utilizing a dedicated radio network configured fail safe, providing anti-islanding supplementation to ensure detection. This addition establishes islanding
detection under all generation conditions, improving line worker safety by ensuring power injection removal. Transformer network current analysis is considered for various common transformer configurations, with an existing application example.
Date and Time
Location
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Registration
- Date: 16 May 2019
- Time: 06:00 PM to 08:00 PM
- All times are (GMT-07:00) US/Mountain
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- 1475 S Pearl St
- Denver, Colorado
- United States 80210
- Building: The Tavern Platt Park
- Room Number: Crestone Room (Upstairs)
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- Starts 08 May 2019 12:00 PM
- Ends 16 May 2019 12:00 PM
- All times are (GMT-07:00) US/Mountain
- Admission fee (optional) ?
- Menu: Tavern Burger, Chicken Sandwich, Vegetarian Salad
Speakers
Clifton Oertli, PE of NEI Electric Power
Biography:
Clifton Oertli received his Bachelor's and Master’s degrees in Electrical Engineering from the Colorado School of Mines in 2007 and 2009, respectively. He is a licensed Professional Engineer in multiple states and Principal Engineer at NEI Electric Power Engineering, Inc. in Wheat Ridge, CO.
Clifton is a Senior Member and active in multiple areas of IEEE. He is the Vice Chair of his local Denver PES/IAS Chapter, member of the IAS/PCIC executive subcommittee, and former IAS Board Member.
Devlin Messmer and Julia Redmond
Biography:
Devlin Messmer
Devlin Messmer received his degree in Electrical Engineering Technology (Power System) from Excelsior College in 2018 and his Master of Engineering Acoustics in 2010 from Naval Postgraduate School. He has worked at NEI Electric Power Engineering, Inc. since 2015, and his interest centers on controls optimization of commercial and renewable power generation.
Julia Redmond
Julia Redmond received her degree in Electrical Engineering from the University of Colorado in She has been a Power Systems Engineer for NEI Electric Power Engineering, Inc. for the past year. Before working at NEI, she worked for two years as an Electrical Distribution Engineering Intern at Xcel Energy.
Cost: IEEE member: $15.00 for dinner; Non-IEEE members: $20.00 for dinner; Student IEEE members: free dinner. Please bring valid IEEE or student ID.
No charge to anyone who wants to attend only the presentation (no dinner).