Performance of protection relays during stable and unstable power
This work will characterise and evaluate the impact of stable and unstable power swings on a wide range of protection functions in protection relays.
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This paper aims to present an overview of the scenarios which give rise to power swings, how protection devices response, and how the implementation of protection algorithms by different manufacturers can cause similar relays functions to react in different ways. Abstract—With increased integration of renewable energy resources, FACTs devices and series compensation, sub-synchronous oscillations (SSO) have become more common in electrical power systems in recent years. Specially designed relaying devices are often employed to detect and isolate harmful SSO. The synchronously interconnected power systems of ENTSOE ensure a high level of security of supply in the most efficient way. Keywords - Generator Protection, Out of Step Protection, Loss of Synchronism, Transient Stability. com IEEE Southern Alberta Section PES/IAS Joint Chapter Technical Seminar - November 2016 Protective Relays - Technical Seminar Nov 2016 - Copyright: IEEE 2 Abstract: Protective relays and devices.
