IEEE Power and Energy Society

Chicago Chapter 2019-2020

Time-Domain Elements Optimize the Security and Performance of Transformer Protection

Wednesday, March 11, 2020

Ryan McDaniel

Schweitzer Engineering Laboratories

About the Topic

Transformers experience magnetizing inrush that creates an operating current in the transformer differential protection. Early transformer differential relays had to address the limits of analog technology. Analog filter circuits could extract the second- and fourth-harmonic components of the differential current, and these were used as a surrogate measure for determining if the operating current was due to inrush. Today, we can design algorithms that distinguish directly between inrush characteristics and fault current characteristics. By using the new time-domain algorithms, we can improve sensitivity and speed of transformer differential protection. We can also maintain protection security for transformers built using improved core steels.

About the Speaker

Ryan McDaniel earned his BS in computer engineering from Ohio Northern University in 2002. In 1999, Ryan was hired by American Electric Power (AEP) as a relay technician, where he commissioned protective systems. In 2002, Ryan began working in the Station Projects Engineering group as a protection and control engineer. His responsibilities in this position included protection and control design for substation, distribution, and transmission equipment as well as coordination studies for the AEP system. In 2005, Ryan joined Schweitzer Engineering Laboratories, Inc. and is currently a senior field application engineer. His responsibilities include providing application support and technical training for protective relay users. Ryan is a registered Professional Engineer in the state of Illinois and a member of IEEE.

Location       Time

ComEd Commercial Center - Auditorium 5:30 PM   Social - CANCELED

1919 Swift Drive (park behind building) 6:00 PM   Dinner - CANCELED

Oak Brook, IL 60523-1850 6:45 PM   Presentation - WILL PROCEED AS SCHEDULED

(near I-290 & I-294 interchange) 8:00 PM   Adjourn

630-684-3200

Location	Time

ComEd Commercial Center - Auditorium	5:30 PM	Social - CANCELED
1919 Swift Drive (park behind building)	6:00 PM	Dinner - CANCELED
Oak Brook, IL 60523-1850	6:45 PM	Presentation - WILL PROCEED AS SCHEDULED
(near I-290 & I-294 interchange)	8:00 PM	Adjourn
630-684-3200

Reservations

Please make your reservation by noon on Monday 9 Mar 2020 via the Online Reservation Form.

The social and dinner portions of the meeting have been canceled. We look forward to welcoming you to the presentation portion of the meeting, assuming you are feeling well and have not been in contact with anyone who is likely to have been exposed to coronavirus.

Security Procedure

You must present a government issued photo ID to the ComEd Commercial Center guard when you arrive. Please allow a few minutes for the guard to create a custom badge with your photo. ComEd employees and ComEd contractors may use their ComEd ID badges to enter the building.

Continuing Education

IEEE technical meetings may be acceptable as continuing education where required for maintenance of professional engineering licensure. Refer to the individual state's requirements for details. A receipt for one Professional Development Hour (PDH) will be provided.

Updated 10 Mar 2020