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2021 Papers and Presentations

Tuesday, March 23, 2021

Utility Challenges

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Types of System Oscillations and Their Detection – Concepts and Applications
Mark Adamiak, Adamiak Consulting LLC

Line Current Measurement at Dual-Breaker Terminals: Challenges and Solutions
Michael Lampe, Lower Colorado River Authority

The Missing Link: How CT and VT Connection Errors Affect Protection
Marcel Taberer, Schweitzer Engineering Laboratories, Inc.
Praveen Iyer, Schweitzer Engineering Laboratories, Inc.

Impact of IEC 61850 Edition 2 on the Object Modeling of Complex Multifunctional Protection IEDs
Alexander Apostolov, OMICRON electronics

Tuesday, March 23, 2021


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Testing a Process Bus Based Multi-Zone Protective Relay
Mike Ramlachan, GE Grid Solutions

A Troubleshooting Methodology for Issues Discovered During End-to-End Testing
Jose R Garza, American Electric Power

Assessment of a Misoperation on a Distance Protection Relay by Means of Line Impedance Measurement and System-Based Testing
Eugenio Carvalheira, OMICRON

Effect of Current Transformer design on magnetic saturation and its implications on protection schemes: Analysis and Testing
Sughosh Kuber, Megger
Abel Gonzalez, Megger
Mohit Sharma, Megger

Next Generation Testing of Line Protection Using IEC 61850 GOOSE Messages
Galina Antonova, Hitachi ABB Power Grids

Tuesday, March 23, 2021

Distribution I

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Centralized Protection and Control Enhancing Reliability, Availability, Flexibility and Improving Operating Cost Efficiency of Distribution Substations
Joemoan I. Xavier, ABB Inc.

Complex Faults – Using High-Quality Waveform Data to Understand Faults That Misbehave
Jeffrey Wischkaemper, Texas A&M University

Case Study: High-Density Distribution Coordination Using High-Speed Communications
Chris Anderson, Schweitzer Engineering Laboratories, Inc.

High-Impedance Faults: Comparing Algorithms
Daniel Ransom, GE Grid Solutions

Recent Utility Experience with High Impedance Fault Detection
Mark Adamiak, Adamiak Consulting LLC

Phasor-based Transient Earth-Fault Protection
Zoran Gajić, Hitachi ABB Power Grids Sweden

Tuesday, March 23, 2021

Transmission I

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Permissive or Blocking Pilot Protection Schemes? How to Have It Both Ways
Bogdan Kasztenny, Schweitzer Engineering Laboratories, Inc.

Application and Integration of Automation-Based Tools for Efficient and Accurate Modeling of Transmission System Protection
Chris Bolton, San Diego Gas & Electric
Aaron Feathers, Pacific Gas & Electric
Michael T Miller Jr, PECO Energy
Jacob Tucker, Commonwealth Edison

Auto-tuned Solution to Wide Area Coordination Issues of Distance and Directional Time Overcurrent Relay Settings
Nathan Thomas, SynchroGrid
Joe Perez, SynchroGrid

Cross Country Faults – Protection Challenges and Improvements
Venkatesh Chakrapani, GE Grid Solutions

Setting Considerations for Distance Elements in Line Protection Applications
Bogdan Kasztenny, Schweitzer Engineering Laboratories, Inc.

Interoperability of Line Differential Protection
Jörg Blumschein, SIEMENS

Wednesday, March 24, 2021

Real World Experiences

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Case Studies in Analyzing Transformer Installation Faults – Part 1
Sudipta Maiti, Damodar Valley Corporation
AEP Misop Event of 2/23/2019
Phillip Lux, American Electric Power

AEP Outage Event of 3/20/2018
Bret Burford, American Electric Power

Event Investigation of 69 kV Double-Circuit Faults
Amanvir Sudan, Schweitzer Engineering Laboratories, Inc.

Finding Common Ground: A Case Study of Phantom Currents and Ground Loops
Matthew Boecker, Lower Colorado River Authority

Electromechanical Differential Relays Misoperation and Investigation
Alex Rangel, Saber Power Services

Case Study – Transformer Differential Incorrect Operation Due to System Grounding
JC Theron, GE Grid Solutions

Wednesday, March 24, 2021

Substation I

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The Need for Faster Underfrequency Load Shedding
Kevin W. Jones, Xcel Energy

Process Bus Busbar Protection – A Stepping Stone Towards Digital Substation
Terrence Smith, GE Grid Automation

CVT Transients – Causes, Effects and Solutions
Venkatesh Chakrapani, GE Grid Solutions

The Response of a Transformer Differential Relay to Internal Faults While Influenced by Geomagnetically Induced Currents
Derrick Haas, Schweitzer Engineering Laboratories, Inc.
Andrew Mattei, Baylor University/Brazos Electric Power Cooperative, Inc.

Analysis of Fundamental Differences in Transformer 87T Differential Protection
Mike Kockott, Hitachi ABB Power Grids USA

Restricted Earth-Fault (REF) Protection Challenges due to extensive use of Cables: A Case Study
Zoran Gajić, Hitachi ABB Power Grids Sweden

Wednesday, March 24, 2021


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Wide Area GOOSE and its Applications to System Integrity Protection Schemes
Alexander Apostolov, Omicron electronics

Wireless Solutions for Reliable Distribution System Protection & Control
Mike Ramlachan, GE Grid Solutions
Edgard Sammour, GE Grid Solutions

Ethernet Networking for Protection and Control IEEE PSCCC P6 Report
Eric Udren, Quanta Technology, LLC

New Methods for Power Line Carrier Monitoring and Analysis Real-World Examples and Implications for Protection System Reliability
Craig Palmer, PowerComm Solutions

Cyber Vulnerability Assessment of a Digital Secondary System in an Electrical Substation
Mauricio Silveira, Schweitzer Engineering Laboratories, Inc.
David Dolezilek, Schweitzer Engineering Laboratories, Inc.

Analysis of In-Service Line Current Differential Protection Circuits: Comparing SONET With Packet-Switched Network Performance
Troy Ledford, Schweitzer Engineering Laboratories, Inc.

Wednesday, March 24, 2021


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Using Virtual Synchronous Generators to Resolve Microgrid Protection Challenges
John Glassmire, Hitachi ABB Power Grids

Determining CT Requirements for Generator and Transformer Protective Relays
Ritwik Chowdhury, Schweitzer Engineering Laboratories, Inc.

Achieving Reliable Generator 100% Stator Ground Fault Protection
Nader Safari-shad, University of Wisconsin-Platteville

Improvements in Generator Breaker Failure Protection During Low-Current Conditions
Sumit Sawai, Schweitzer Engineering Laboratories, Inc.

Making Sense of Adaptive Techniques to Improve the Stability of Generator Differential Protection and its Testing Methods
Eduardo Colmenares, ABB Inc.

Lessons Learned From Generator Destructive Testing
Matchyaraju Alla, Schweitzer Engineering Laboratories, Inc.

Thursday, March 25, 2021


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International Drive Distribution Loop Protection, Lessons Learn and Improvement Project
Craig Merritt, Duke Energy
Praveen Kumar, Commonwealth Associates, Inc

Modernization of an Industrial Power Distribution and Automation System – Lessons Learned
Joemoan I. Xavier, ABB Inc.

Protection Considerations for an Improperly Installed On-Load Tap Changer
Alex Rangel, Saber Power Services

Fast Load Shedding Scheme for Enhancing Reliability and Stability of Expanded Liquified Gas Plant
Jonathan Gao, GE Grid Solutions

Practical Aspects of Designing Safe and Compact Mv Switchgear Using “Air Core Ct”, “Resistor Voltage Divider Vt” and Modern Intelligent Microprocessor Relays
Predrag Milovac, IEM

Improving Protection Applications for Modern Industrial Switchgear Systems
Benton Vandiver, ABB ES

Thursday, March 25, 2021

Inverter Based Resources

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Effective System Grounding. Analysis of the effect of High penetration of IBRs
Sebastien Billaut, Commonwealth Associates, Inc.
Adam Miles, Commonwealth Associates, Inc.

Impact of Inverter-based Resources on Impedance-based Protection Functions
Prashanth Kumar Mansani, ETAP

Field Experience With Open-Phase Testing at Sites With Inverter-Based Resources
John Town, Schweitzer Engineering Laboratories, Inc.

Transmission Line Protection for Systems With Inverter-Based Resources
Normann Fischer, Schweitzer Engineering Laboratories, Inc.

Tutorial on Sub-synchronous Resonance Protection Applied to Inverter Based Renewables
Nuwan Perera, ERLPhase Power Technolgies Ltd.

A Novel Control Scheme for Utility-Scale Inverter-Based Resources to Emulate Synchronous-Generator Fault Response and Retain Existing Protection Infrastructure
Daniel Kelly, University of Minnesota
Pratap Mysore, Pratap Consulting Services, LLC

Thursday, March 25, 2021

Distribution II

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Validation Testing of IEC 61850 Process Bus Architecture in a Typical Digital Substation
Michael Whitehead, GE Grid Solutions

Can Compensated Networks be an Alternate Solution to Reduce the Risk of Ground Faults Causing Forest Fires?
Ari Wahlroos, ABB Oy.

Adaptive Coordination Schemes to Reduce Fault Energy in Distribution Feeders Using Wireless Protection Sensors
David Keckalo, Schweitzer Engineering Laboratories, Inc.

Understanding Ground Fault Detection Sensitivity and Ways to Mitigate Safety Hazards in Power Distribution Systems
Daqing Hou, Schweitzer Engineering Laboratories, Inc.

Process Improvement of Distribution Protective Relay Coordination
Mehrdad Chapariha, Quanta Technology
Arthur Giourdjian, San Diego Gas & Electric

Securing Wireless Communication Networks with a Defense-in-Depth Approach
Shashi Sastry, Hitachi ABB
Galina S. Antonova, Hitachi ABB

Thursday, March 25, 2021

Substation II

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CT Saturation – A Simulation Study of Different Detection and Blocking Algorithms
Ilia Voloh, GE Grid Solutions

Ground Fault Protection of Microgrid Interconnection Line Using Residual Voltage Compensation
Yujie Yin, GE Grid Solutions

Combining Battery and AC Sources for More Reliable Control Power
Michael Thompson, Schweitzer Engineering Laboratories, Inc.

Implementation of a New Algorithm to Detect Turn-to-Turn Faults in Shunt Reactors and Identify the Faulted Phase
Paul I Nyombi, Xcel Energy

Experience with Point-to-Point Process Bus
JC Theron, GE Grid Solutions

Challenges Replacing Electro-Mechanical Transformer Differential Relays
Terrence Smith, GE Grid Solutions

Thursday, March 25, 2021

Transmission II

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Selecting, Implementing and Overcoming Challenges when Selecting a Coordination Criteria for Wide Area Applications
Naveen Ganta, SynchroGrid LLC

Testing Transformer Differential Protection in Digital Substations – Use cases & Results
Mohit Sharma, Megger
Sughosh Kuber, Megger

Application Considerations for Protecting Three-Terminal Transmission Lines
Alex Hulen, Schweitzer Engineering Laboratories, Inc.

Simplifying PRC-026 Compliance With Practical Solutions You Least Expect
Michael Thompson, Schweitzer Engineering Laboratories, Inc.

Double-Ended Traveling-Wave Fault Locating Without Relay-to-Relay Communications
Gianfranco Patti, Schweitzer Engineering Laboratories, Inc.
David López Corton, Red Eléctrica de España

How a Measurement You May Not Be Doing Can Improve Relay Operations
Chase Lockhart, Leidos
Adam Fox, Leidos