The stability of a generator following a sudden power imbalance, caused either by a short circuit or a load rejection, may be significantly increased adopting particular techiniques of control of the turbine valves called "fast valving" (also "early valve actuation"). The control law is normally pre-defined on the bases of simulation studies of the power system dynamics, and may sometimes not match the precise system requirements in the real faulted conditions. A new control logis is proposed in the paper, based only on on-line measured variables, and probably better matching the system needs; this logic is called "Closed-Loop Fast Valving" (CLFV). The effectiveness of the CLFV is tested by means of computer simulations making use of the EMTP code.

Evaluating Closed Loop Fast Valving Performance in Power Plants

DENEGRI, GIO BATTISTA;INVERNIZZI, MARCO;PINCETI, PAOLO
1989-01-01

Abstract

The stability of a generator following a sudden power imbalance, caused either by a short circuit or a load rejection, may be significantly increased adopting particular techiniques of control of the turbine valves called "fast valving" (also "early valve actuation"). The control law is normally pre-defined on the bases of simulation studies of the power system dynamics, and may sometimes not match the precise system requirements in the real faulted conditions. A new control logis is proposed in the paper, based only on on-line measured variables, and probably better matching the system needs; this logic is called "Closed-Loop Fast Valving" (CLFV). The effectiveness of the CLFV is tested by means of computer simulations making use of the EMTP code.
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/11567/387786
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact