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Design and comparison of UFLS schemes of isolated power systems based on frequency stability margin

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IIT-23-074C.pdf (1.665Mb)
Autor
Vadillo Díaz de Aguilar, Mónica
Sigrist, Lukas
Rudez, Urban
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info:eu-repo/semantics/draft
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Resumen
 
 
Increasing penetration of renewable energy resources (RES) affects stability and, in particular, frequency stability of island power systems like the Canary Islands. System protection involves underfrequency load shedding (UFLS) as a last resort tool. The objective of this paper is to tune the parameters of a UFLS scheme based on the frequency stability margin (FSM) and compare its performance with conventional UFLS schemes. The performance is assessed by simulating the outage of generating units of a real isolated Spanish power system. The results of this study demonstrate that the introduction of the FSM in the UFLS scheme contributes to a significant improvement in its performance. The load shedding is delayed for moderate rate of change of frequency (ROCOF) values, and the amount of disconnected load is reduced.
 
URI
http://hdl.handle.net/11531/87285
Design and comparison of UFLS schemes of isolated power systems based on frequency stability margin
Palabras Clave

Island power systems, frequency stability, underfrequency load shedding.
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