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SEL Cables

SEL manufactures high-quality cables for connecting a variety of devices. You can order cables to specific lengths to meet your needs. Each cable is quality tested to ensure reliability and proper operation.
SEL University Course

APP 751: SEL-751 Feeder Protection Relay

January 25–26, 2022
Irvine, CA, USA
SEL University Course

APP 710: SEL-710 Motor Protection Relay

March 2–3, 2022
Charlotte, NC, USA
SEL University Course

APP 3530 ADV-1: Introduction to IEC 61131 in the RTAC

March 15–17, 2022
Charlotte, NC, USA
SEL University Course

PROT 403: Distribution System Protection

April 12–15, 2022
Memphis, TN, USA
SEL University Course

APP 3530: SEL-3530 Real-Time Automation Controller (RTAC)

May 17–19, 2022
Alpharetta, GA, USA
SEL University Course

APP 3530: SEL-3530 Real-Time Automation Controller (RTAC)

June 7–9, 2022
Billings, MT, USA
SEL University Course

APP 710: SEL-710 Motor Protection Relay

July 13–14, 2022
Memphis, TN, USA
SEL University Course

APP 651R: SEL-651R Advanced Recloser Control

August 3–4, 2022
Charlotte, NC, USA
SEL University Course

APP 751: SEL-751 Feeder Protection Relay

August 31–September 1, 2022
Jacksonville, FL, USA

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854 Results Found  Current Page: 1 of 86
Technical Paper

Forward to the Basics: Selected Topics in Distribution Protection

Through analysis of event reports recorded by relays, this paper will present several examples of settings that led to unintended operation of distribution protection, including transformer delta-winding residual overcurrent protection, transformer high-voltage phase overcurrent protection, and others.

Authors
  • Lee Underwood
  • David Costello
Presented At
2008
  • WPRC
2009
  • Texas A&M Relay Conference
2010
  • REPC
Date Code:   2008-12-16
Technical Paper

Lessons Learned Through Commissioning and Analyzing Data From Transformer Differential Installations

In the interest of reducing transformer differential misoperations, we share in this technical paper practical lessons we have learned through experience with commissioning and relay event report analysis.

Authors
  • David Costello
Presented At
2006
  • WPRC
2007
  • Texas A&M Relay Conference
  • PPIC
  • Georgia Tech PRC
  • Clemson PSC
Date Code:   2009-03-24
Technical Paper

Validating Transmission Line Impedances Using Known Event Data

This paper discusses how to use event data (voltages, currents, and fault location) from relays at two ends of a transmission line to calculate positive-, negative-, and zero-sequence line impedances. Impedances calculated from real event data can be used to validate relay settings and short-circuit models.

Authors
  • Ariana Amberg
  • Alex Rangel
  • Greg Smelich
Presented At
2012
  • WPRC
  • Texas A&M Relay Conference
  • Georgia Tech FDA
2013
  • MIPSYCON
  • Clemson PSC
Date Code:   2016-04-25
Technical Paper

Analysis of Selected Motor Event and Starting Reports

This paper investigates several real-world events with data from both motor starting reports and event records. The data demonstrate the value of having devices capable of recording motor data during starts and fault events and of capturing and reviewing such data for the purpose of determining root cause.

Authors
  • Derrick Haas
  • Jason Young
  • Ryan McDaniel
Presented At
2012
  • Texas A&M Relay Conference
  • Georgia Tech FDA
2020
  • PowerTest Conference
Date Code:   2012-02-17
Technical Paper

Lessons Learned From Generator Event Reports

This paper analyzes real-world event report data in the interest of uncovering valuable lessons for setting and commissioning generator relays.

Authors
  • Rogerio C. Scharlach
  • Jason Young
Presented At
2009
  • WPRC
2010
  • Texas A&M Relay Conference
  • MIPSYCON
  • Georgia Tech PRC
Date Code:   2010-03-03
Technical Paper

Lessons Learned Analyzing Transmission Faults

In the interest of reducing transmission line relay misoperations, this technical paper shares practical lessons learned through experience analyzing transmission line relay event reports.

Authors
  • David Costello
Presented At
2007
  • WPRC
2008
  • Texas A&M Relay Conference
  • MIPSYCON
  • Georgia Tech PRC
Date Code:   2007-09-13
Technical Paper

A Fresh Look at Distribution Protection

This paper presents a customized methodology for relay system selection.

Authors
  • Edmund O. Schweitzer, III
  • Gary W. Scheer
  • Mark W. Feltis
Presented At
1992
  • International Symposium on Distribution Automation and Demand Side Management
Date Code:   1991-04-01
Technical Paper

Understanding Ground Fault Detection Sensitivity and Ways to Mitigate Safety Hazards in Power Distribution Systems

This paper revisits different grounding practices in distribution power systems. It discusses how system grounding and load connection impact the sensitivity of detecting higher-impedance ground faults. The paper discusses possible ways of improving the ground fault detection sensitivity for different systems. The paper illustrates that no single economical technology or practice available today can guarantee 100 percent reliable high-impedance ground fault detection. To provide a perspective with respect to ground faults versus fire ignitions, the paper reviews several staged downed conductor tests and summarizes key research findings in released energy of arcing faults and fire ignition.

Authors
  • Scott Hayes, Pacific Gas and Electric Company
  • Daqing Hou
  • Normann Fischer
Presented At
2019
  • WPRC
2021
  • MIPSYCON
  • Georgia Tech PRC
  • Texas A&M Relay Conference
Date Code:   2019-09-23
Technical Paper

Case Study: Phasor-Based Control for Managing Inverter Generation

This paper discusses the infrastructure and performance differences controlling inverter generation with synchrophasor data vs. traditional SCADA protocols like DNP3 or Modbus.

Authors
  • Dmitriy Anichkov (Merit SI, LLC)
  • Brian Waldron
Presented At
2021
  • MIPSYCON
Date Code:   2021-10-26
Technical Paper

Phase-Shifting Transformer Control and Protection Settings Verification

This paper discusses the protection and controls for two parallel 400 MVA (+31.3° to –80.1°) phase-shifting transformers at a utility's 230 kV interconnection substation.

Authors
  • Bill Cook, San Diego Gas & Electric
  • Michael J. Thompson
  • Kamal Garg
  • Milind Malichkar
Presented At
2018
  • WPRC
  • Texas A&M Relay Conference
Date Code:   2018-09-06