In this paper the notion of structural coherency is introduced as a generalized definition of coherency related to the order reduction that may occur in an external power system when forming its transfer function matrix. On the basis of a linearized model of the external system in polynomial matrix form, necessary and sufficient conditions, involving network and generator parameters, are given to ascertain the presence of structurally coherent generators. A practical coherency index is defined which allows one to evaluate the degree of structural coherency among the generating units. By using the proposed index, nearly-coherent generator groups can be easily identified and accurate dynamic equivalents are provided.

Structural Coherency in Interconnected Power Systems

Brucoli, Michele;Torelli, Francesco;Trovato, Michele
1983

Abstract

In this paper the notion of structural coherency is introduced as a generalized definition of coherency related to the order reduction that may occur in an external power system when forming its transfer function matrix. On the basis of a linearized model of the external system in polynomial matrix form, necessary and sufficient conditions, involving network and generator parameters, are given to ascertain the presence of structurally coherent generators. A practical coherency index is defined which allows one to evaluate the degree of structural coherency among the generating units. By using the proposed index, nearly-coherent generator groups can be easily identified and accurate dynamic equivalents are provided.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/11644
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • Scopus 2
  • ???jsp.display-item.citation.isi??? ND
social impact