2018 Georgia Tech Protective Relaying Conference

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Hidden Failure Detection in Protection System via Centralized Substation Protection

Protection reliability (dependability and security) is jeopardized by two issues: (a) hidden or direct failures of legacy as well as modern protection systems and (b) protective relaying mis-operations due mainly to coordination gaps in present day complex protection and control systems. Therefore, continuous monitoring of protection and control system health and improved “self-healing” protection methods which eliminate relay mis-operations are desirable. We present a new dynamic state estimation-based centralized protection scheme (DSEBCPS) at a substation level that addresses these needs. The system integrates dynamic state estimation-based relays (a.k.a. “setting-less relays”) with a substation-wide monitoring system that detects hidden failures and self-corrects compromised data. The approach results in a self-healing P&C system. The method has been tested via numerical experiments with hardware-in-the-loop and establishes a new paradigm of asset management for protection and control systems.

Sakis Meliopoulos
Georgia Tech
United States

George Cokkinides
Georgia Tech
United States

Hussain Albinali
Aramco SA
Saudi Arabia

Paul Myrda
EPRI
United States

Evangelos Farantatos
EPRI
United States

 

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