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2021 Papers and Presentations

Tuesday, March 23, 2021

Utility Challenges

Types of System Oscillations and Their Detection – Concepts and Applications (Paper) (Presentation)
Mark Adamiak, Adamiak Consulting LLC

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

The Missing Link: How CT and VT Connection Errors Affect Protection (Paper) (Presentation)
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 (Paper) (Presentation)
Alexander Apostolov, OMICRON electronics

Tuesday, March 23, 2021


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

A Troubleshooting Methodology for Issues Discovered During End-to-End Testing (Paper) (Presentation)
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 (Paper) (Presentation)
Eugenio Carvalheira, OMICRON

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

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

Tuesday, March 23, 2021

Distribution I

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

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

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

High-Impedance Faults: Comparing Algorithms (Paper) (Presentation)
Daniel Ransom, GE Grid Solutions

Recent Utility Experience with High Impedance Fault Detection (Paper) (Presentation)
Mark Adamiak, Adamiak Consulting LLC

Phasor-based Transient Earth-Fault Protection (Paper) (Presentation)
Zoran Gajić, Hitachi ABB Power Grids Sweden

Tuesday, March 23, 2021

Transmission I

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

Application and Integration of Automation-Based Tools for Efficient and Accurate Modeling of Transmission System Protection (Paper) (Presentation)
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 (Paper) (Presentation)
Nathan Thomas, SynchroGrid
Joe Perez, SynchroGrid

Cross Country Faults – Protection Challenges and Improvements (Paper) (Presentation)
Venkatesh Chakrapani, GE Grid Solutions

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

Interoperability of Line Differential Protection (Paper) (Presentation)
Jörg Blumschein, SIEMENS

Wednesday, March 24, 2021

Real World Experiences

Case Studies in Analyzing Transformer Installation Faults – Part 1 (Paper) (Presentation)
Sudipta Maiti, Damodar Valley Corporation

AEP Misop Event of 2/23/2019 (Presentation)
Phillip Lux, American Electric Power

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

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

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

Electromechanical Differential Relays Misoperation and Investigation (Paper) (Presentation)
Alex Rangel, Saber Power Services

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

Wednesday, March 24, 2021

Substation I

The Need for Faster Underfrequency Load Shedding (Paper) (Presentation)
Kevin W. Jones, Xcel Energy

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

CVT Transients – Causes, Effects and Solutions (Paper) (Presentation)
Venkatesh Chakrapani, GE Grid Solutions

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

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

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

Wednesday, March 24, 2021


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

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

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

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

Cyber Vulnerability Assessment of a Digital Secondary System in an Electrical Substation (Paper) (Presentation)
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 (Paper) (Presentation)
Troy Ledford, Schweitzer Engineering Laboratories, Inc.

Wednesday, March 24, 2021


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

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

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

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

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

Lessons Learned From Generator Destructive Testing (Paper) (Presentation)
Matchyaraju Alla, Schweitzer Engineering Laboratories, Inc.

Thursday, March 25, 2021


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

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

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

Fast Load Shedding Scheme for Enhancing Reliability and Stability of Expanded Liquified Gas Plant (Paper) (Presentation)
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 (Paper) (Presentation)
Predrag Milovac, IEM

Improving Protection Applications for Modern Industrial Switchgear Systems (Paper) (Presentation)
Benton Vandiver, ABB ES

Thursday, March 25, 2021

Inverter Based Resources

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

Impact of Inverter-based Resources on Impedance-based Protection Functions (Paper) (Presentation)
Prashanth Kumar Mansani, ETAP

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

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

Tutorial on Sub-synchronous Resonance Protection Applied to Inverter Based Renewables (Paper) (Presentation)
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 (Paper) (Presentation)
Daniel Kelly, University of Minnesota
Pratap Mysore, Pratap Consulting Services, LLC

Thursday, March 25, 2021

Distribution II

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

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

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

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

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

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

Thursday, March 25, 2021

Substation II

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

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

Combining Battery and AC Sources for More Reliable Control Power (Paper) (Presentation)
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 (Paper) (Presentation)
Paul I Nyombi, Xcel Energy

Experience with Point-to-Point Process Bus (Paper) (Presentation)
JC Theron, GE Grid Solutions

Challenges Replacing Electro-Mechanical Transformer Differential Relays (Paper) (Presentation)
Terrence Smith, GE Grid Solutions

Thursday, March 25, 2021

Transmission II

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

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

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

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

Double-Ended Traveling-Wave Fault Locating Without Relay-to-Relay Communications (Paper) (Presentation)
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 (Paper) (Presentation)
Chase Lockhart, Leidos
Adam Fox, Leidos