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An Advanced Synchronized Time Digital Grid Twin Testbed for Relay Misoperation Analysis of Electrical Fault Type Detection Algorithms

Journal Article · · Metrology
Distributed energy resources and the number of relays are expected to rise in modern electrical grids; consequently, relay misoperations are also expected to grow. Relays can detect electrical fault types using an internal algorithm and can display the result using light indicators on the front of the relay. However, some relays’ internal algorithms for predicting types of electrical faults could be improved. This study assesses a relay’s external and internal algorithms with an Advanced Synchronized Time Digital Grid Twin (ASTDGT) testbed with paired relays. A misoperation relay analysis focused on measuring the accuracy of using the boundary admittance (the external algorithm) versus the set-default (the internal algorithm) relay method to determine the electrical fault types was performed. In this study, the internal and external relay algorithms were assessed with a synchronized time digital grid twin testbed using a real-time simulator. This testbed evaluated two sets of logic at the same time with the digital grid twin and paired relays in the loop. Different types of electrical faults were simulated, and the relays’ recorded events and electrical fault light indicator states were collected from the human–machine interfaces. This ASTDGT testbed with paired relays successfully evaluated the relay algorithm misoperations. The boundary admittance method had an accuracy of 100% for line-to-line, line-to-ground, and line-to-line ground faults.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Electricity (OE)
Grant/Contract Number:
AC05-00OR22725; NA0003525
OSTI ID:
2428084
Journal Information:
Metrology, Journal Name: Metrology Journal Issue: 3 Vol. 4; ISSN 2673-8244
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

References (25)

Protection schemes used in North American microgrids journal May 2020
Variable frequency response testbed to validate protective relays up to 20 kHz✰ journal May 2021
A generic method for interfacing IEDs using low voltage interfaces to real-time simulators with hardware in the loop journal October 2021
The Fault Causes of Overhead Lines in Distribution Network journal January 2016
Digital Twin: Technology Evolution Stages and Implementation Layers With Technology Elements journal January 2022
Evaluation of New Grid Codes for Converter-Based DERs From the Perspective of AC Microgrid Protection journal January 2022
From Digital Twins to Digital Twin Prototypes: Concepts, Formalization, and Applications journal January 2024
A Comparative Review of Fault Location/Identification Methods in Distribution Networks conference June 2018
Understanding the dynamic mho distance characteristic conference April 2016
Stability Impact of IEEE 1547 Operational Mode Changes Under High DER Penetration in the Presence of Cyber Adversary conference April 2021
Current-Based Trip Coil Analysis of Circuit Breakers for Fault Diagnosis conference October 2018
Important Considerations for Testing and Commissioning Digital Protective Relays: Avoid Misoperations journal July 2019
Under voltage accelerated protection of single source distribution systems conference January 2003
Protection system misoperation analysis conference July 2014
Rule-Based Data-Driven Analytics for Wide-Area Fault Detection Using Synchrophasor Data journal May 2017
A Real-Time Data-Driven Algorithm for Health Diagnosis and Prognosis of a Circuit Breaker Trip Assembly journal June 2015
Detecting Single-Phase-to-Ground Fault Event and Identifying Faulty Feeder in Neutral Ineffectively Grounded Distribution System journal October 2018
Stochastic Strategic Participation of Active Distribution Networks With High-Penetration DERs in Wholesale Electricity Markets journal March 2023
Assessment of the Phase-to-Ground Fault Apparent Admittance Method with Phase/Ground Boundaries to Detect Types of Electrical Faults for Protective Relays Using Signature Library and Simulated Events journal September 2022
Assessment and Commissioning of Electrical Substation Grid Test Bed with a Real-Time Simulator and Protective Relays/Power Meters in the Loop journal January 2023
Experimental Design for Virtual Experiments in Tilted-Wave Interferometry journal February 2022
Development of a Toolchain for Automated Optical 3D Metrology Tasks journal May 2022
Simulation Uncertainty for a Virtual Ultrasonic Flow Meter journal July 2022
Uncertainty-Based Autonomous Path Planning for Laser Line Scanners journal December 2022
3D Model-Based Large-Volume Metrology Supporting Smart Manufacturing and Digital Twin Concepts journal January 2023