Maxwell of Dominion Energy Services Co.

This presentation outlines the outcomes of a comprehensive technical evaluation conducted to assist a major utility retrofit outmoded medium voltage air circuit breakers in generator switchgear with standard medium voltage vacuum replacement circuit breakers (MVVRs) or definite purpose generator replacement breakers (VRGs). The project involved the evaluation of the necessary and sufficient technical considerations required for the deployment of special class circuit breakers in challenging and critical installations.  These considerations are the maximum symmetrical rms interrupting duty of the breaker, the temporary overvoltage (TOV) imposed on associated equipment, and the resulting transient recovery voltage (TRV) withstand strength across the breaker contacts that follows the engagement of these breakers for clearing both generator-fed and system-fed faults. Where the results exceeded the breaker ratings, corrective modification steps such as surge arresters, surge capacitors or snubber circuits were recommended for the utility’s consideration.  The study results enabled the utility to retrofit their existing outmoded MV generator air circuit breakers with cost-effective MVVRs or VRGs along with the appropriate mitigation equipment in a timely manner for a safe and continued reliable operation. 

Biography:

Maxwell A Danku, PE, PhD, (M’04), received the Ph.D. degree from Florida Agricultural and Mechanical University in 2009. Receive the M.S.E.E. degree in Electrical and Electronics Engineering from Tsinghua University in 1994. His is currently a Senior Electrical Engineer at Dominion Energy Services Co. with expertise in the following areas: LV/MV Switchgear Design Engineering; PLC/HMI Automatic Controller Design (UL 508), Testing and Commissioning of Commercial Power Systems; Power System Studies (Short Circuit, Arc Flash Analysis); Transmission Line Design; Power System Planning and Operation; OCPD Coordination Studies and Settings; Project Engineering Power System Modelling/Validation; Electrical Machines; and Drive Systems. He is a licensed Professional Engineer from the MN Board of AELSLAGID.

Address:Canada

Tamer of Eaton Corporation

This presentation outlines the outcomes of a comprehensive technical evaluation conducted to assist a major utility retrofit outmoded medium voltage air circuit breakers in generator switchgear with standard medium voltage vacuum replacement circuit breakers (MVVRs) or definite purpose generator replacement breakers (VRGs). The project involved the evaluation of the necessary and sufficient technical considerations required for the deployment of special class circuit breakers in challenging and critical installations.  These considerations are the maximum symmetrical rms interrupting duty of the breaker, the temporary overvoltage (TOV) imposed on associated equipment, and the resulting transient recovery voltage (TRV) withstand strength across the breaker contacts that follows the engagement of these breakers for clearing both generator-fed and system-fed faults. Where the results exceeded the breaker ratings, corrective modification steps such as surge arresters, surge capacitors or snubber circuits were recommended for the utility’s consideration.  The study results enabled the utility to retrofit their existing outmoded MV generator air circuit breakers with cost-effective MVVRs or VRGs along with the appropriate mitigation equipment in a timely manner for a safe and continued reliable operation. 

Biography:

Tamer Abdelazim Mellik, P.E., P.Eng., Ph.D., (S’02-M’06-SM’14) received the Ph.D. degree from the University of Calgary, in 2005. He has over 25 years of power system experience involving modeling and simulation of 500 industrial and utility power systems. He is a registered Professional Engineer in Nevada and Alberta. He has co-authored 40 papers in international journals and conferences. He is the recipient of several awards, including the IEEE PES/IAS SA 2019 Chapter Outstanding Engineer Award, the IEEE IAS PCIC 2^nd Best Paper Award in 2018, and the 2005 University of Calgary ENEL Best Teaching Assistant Award. He is interested in transient and steady state power system studies, and utility and renewable energy studies.

Address:Canada

Tom of Eaton Corporation

This presentation outlines the outcomes of a comprehensive technical evaluation conducted to assist a major utility retrofit outmoded medium voltage air circuit breakers in generator switchgear with standard medium voltage vacuum replacement circuit breakers (MVVRs) or definite purpose generator replacement breakers (VRGs). The project involved the evaluation of the necessary and sufficient technical considerations required for the deployment of special class circuit breakers in challenging and critical installations.  These considerations are the maximum symmetrical rms interrupting duty of the breaker, the temporary overvoltage (TOV) imposed on associated equipment, and the resulting transient recovery voltage (TRV) withstand strength across the breaker contacts that follows the engagement of these breakers for clearing both generator-fed and system-fed faults. Where the results exceeded the breaker ratings, corrective modification steps such as surge arresters, surge capacitors or snubber circuits were recommended for the utility’s consideration.  The study results enabled the utility to retrofit their existing outmoded MV generator air circuit breakers with cost-effective MVVRs or VRGs along with the appropriate mitigation equipment in a timely manner for a safe and continued reliable operation. 

Biography:

Thomas J. Dionise, PE, (S’79-M’82-F’19) B.S.E.E. degree from The Pennsylvania State University, University Park, in 1982, and the M.S.E.E. degree with the Power Option from Carnegie Mellon University, Pittsburgh, PA, in 1984. He is currently a Principal Engineer in the Power System Engineering Department, Eaton Corporation, Warrendale. He has over 40 years of power system experience involving analytical studies and power quality investigations of industrial and commercial power systems. In the metals industry, he has specialized in power quality investigations, harmonic analysis and harmonic filter design for electric arc furnaces, rectifiers and VSD applications. He has co-authored 40 papers, several of which received IAS Transactions, Magazine, and conference Prize Paper Awards. Mr. Dionise is the past Chair of the IEEE Metal Industry Committee and member of the Generator Grounding Working Group. He is a licensed Professional Engineer in Pennsylvania