Conference Papers

SynchroGrid's engineers further contribute to the system protection industry by publishing and presenting papers at the major relay conferences in the United States, including the Texas A&M, Georgia Tech, and Western Protective conferences.

SynchroGrid's publications focus on relay applications, fault analysis of events, and research results. Look below to see a few of the conference papers that we have presented recently.

A Novel Approach to Relay Setting Development

April 3, 2017

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Accepted by IEEE. © 2017 IEEE

M. Boecker, G. Corpuz, J. Perez, and L. Hankins, "A Novel Approach to Relay Setting Development," 2017 70th Annual Conference for Protective Relay Engineers (CPRE), College Station, TX, USA, 2017, pp. 1-10.

DOI: 10.1109/CPRE.2017.8090041

This paper demonstrates a sophisticated solution that introduces engineers to an improved and more efficient relay setting development process. Using the latest software development tools, this new solution provides a more advanced method to calculate settings compared to existing methods, and provides an intelligent way to uniformly standardize relay setting templates, eliminate data transfer errors, and overall perform settings, peer-peer review processes and coordination studies at a fraction of the previous time.

Analysis of a Differential and Overcurrent Operation on a 345kV High Voltage Line Reactor

April 8, 2016

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Accepted by IEEE. © 2016 IEEE

E. Schroeder, J. Burton, J. Perez, and L. Hankins, "Analysis of a Differential and Overcurrent Operation on a 345kV High Voltage Line Reactor," 2016 69th Annual Conference for Protective Relay Engineers (CPRE), College Station, TX, USA, 2016, pp. 1-19.

In partnership with Cross Texas Transmission, this paper discusses the operation of two differential relays protection algorithms during a reactor inrush. Detail algorithm and waveform analysis of the Restrain and Operate current reveal the fundamental differences between the two relays.

Relay Loadability Challenges Experienced in Long Lines

April 8, 2016

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Accepted by IEEE. © 2016 IEEE

S. Lee and J. Perez, "Relay Loadability Challenges Experienced in Long Lines," 2016 69th Annual Conference for Protective Relay Engineers (CPRE), College Station, TX, USA, 2016, pp. 1-16.

This paper discusses the two forms of logic scheming: Load Encroachment Setting and Out-of-Step Logic scheming. These are presented as they are applied to long transmission lines, where it can be difficult if not impossible to apply both settings at the same time.

Understanding Sub-Harmonics

August 31, 2015

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This paper focuses on the effects of subharmonics in the power system. This is predominantly observed when a series line capacitor is used in transmission lines to increase power transfer from wind farms.

A Guide To Transformer Digital Fault Recording Event Analysis

August 21, 2015

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This paper focuses on how the proper interpretation of fault and disturbance data is critical for the reliability and continuous operation of the power system. 

Calculating Loadability Limits of Distance Relays

May 14, 2015

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This technical document focuses on concepts, definitions and calculation on how to find the maximum loadability limit of a distance relay with mho and lens characteristics.

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