Performance Assessment of Some Practical Loss of Excitation Detection Schemes Employing a Realistic Model

Abbas Hasani, Claus Leth Bak and Filipe Miguel Faria da Silva
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Abbas Hasani: Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark
Claus Leth Bak: Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark
Filipe Miguel Faria da Silva: Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark

Energies, 2020, vol. 13, issue 22, 1-13

Abstract: Loss of excitation (LOE) relay is one of the most essential protection elements for synchronous generators in power plants. During the last few decades, several LOE detection methods have been proposed, while limited schemes such as admittance- and impedance-based ones have been adopted for industrial applications. This study investigates and compares the behavior of some practical LOE detection schemes through extensive simulation scenarios, and from the reliability, speed, and security points of view. The simulation scenarios are accomplished by using the real-time-digital-simulator, where the phase domain model of the synchronous generator is used to develop a realistic and typical power generation system. Employing such a system, different types of complete and partial LOE incidents can be applied according to IEEE Standard C37.102-2006, while the performance of any scheme can be assessed through accurate and realistic LOE scenarios.

Keywords: protection; loss of excitation detection relay; real-time-digital-simulator; synchronous generator modeling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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