A new digital filter directional relay technique using active/reactive power portrait. (March 2017)

• Record Type: Journal Article
• Authors: Eissa, M.M.; Hasan, S.; Saleh, Sherif S.
• Is Part Of: International journal of electrical power & energy systems. Volume 86(2017)
• Page Start: 33
• Page End: 52
• Publication Date: 2017-03
• Subjects: Electrical engineering -- Periodicals; Electric power systems -- Periodicals; Électrotechnique -- Périodiques; Réseaux électriques (Énergie) -- Périodiques; Electric power systems; Electrical engineering; Periodicals; 621.3
• DOI: 10.1016/j.ijepes.2016.09.010
• Languages: English
• ISSNs: 0142-0615

Abstract

Highlights: The study explains for the first time achieving new concept for digital protection. The system explains commercial and theoretical drawbacks. The technique will predict the event based on new tool. The study contribute new directional relay. Abstract: The present paper discusses some conventional directional relay drawbacks, which are based on the relationship between voltage and current, in order to determine fault direction. In addition, it presents a new fault detection technique based on instantaneous active and reactive energy that is measured and analysed at the relaying point. This energy has a distinct characteristic which is used to distinguish the fault direction. The suggested relay has determined the fault direction in a rather short time after fault occurrence, even in 2–5 ms, depending on the characteristics of the fault generated travelling waves. The algorithm used in this method has been modified in order to improve the performance of the relay. Simulation studies showed that the directional relay based on this new technique has fast speed operation with reliability and dependability.