PAPERS SELECTED FOR THE SYMPOSIUM

• THE EFFECTS OF GENERATOR VOLTAGES CONTROL IN REAL TIME

  Dragan P. Popović - Institut "Nikola Tesla", Beograd, Miloš Stojković - Institut "Nikola Tesla", Beograd

  Abstract Text

  ABSTRACT This papers presents the possibility effects of application in real-time a method for fast and sufficiently accurate definition of generator voltages to realize the favourable voltage-reactive states of electric power interconnection. In peak- load condition, this control is made to... show full text »
  Abstract Text

  ABSTRACT This papers presents the possibility effects of application in real-time a method for fast and sufficiently accurate definition of generator voltages to realize the favourable voltage-reactive states of electric power interconnection. In peak- load condition, this control is made to improve the economic operation, e.g. to reduce the active and reactive power losses. In low-load condition, this control is made to reduce the generator under-exitation states. The development of this method is inspired by known fact of great influence of adequate choice of generator voltage on established voltage-reactive states. The verification of method proposed is made in context of steady-state and dynamic simulation model, on the example of realized and perspective states of Serbian transmission network. The application in real time will be realised by state estimator, which is the part of the new SCADA/EMS system in NDC Elektromreza Srbije. The first practical experiences of the possibility of the application in real time, of the method proposed, has been established on the model of real interconnection, which consists of the EPSs of Serbia, Montenegro, Bosnia and Herzegovina, Hungary, Croatia, Macedonia, Romania, Bulgaria, Greece and Albania. EFEKTI UPRAVLJANJA NAPONIMA GENERATORA U REALNOM VREMENU U radu se izlaže sagledavanje mogućih efekata primene u realnom vremenu jedne metode za brzo i dovoljno tačno definisanje naponskih referenci generatora u cilju ostvarenja povoljnih naponsko-reaktivnih stanja elektroenergetskih interkonekcija. Tu se prvenstveno misli na poboljšanje ekonomije pogona u maksimalnim stanjima, odnosno smanjivanje gubitaka aktivne i reaktivne snage. U minimalnim stanjima, to se radi u cilju minimizacije po¬treba za potpobuđenim režimima rada generatora, odnosno njihovu raspodelu na generatore koji su najpogodniji za to. Razvoj ove metode bio je podstaknut poznatim saznanjem o veoma značajnom uticaju adekvatnog izbora vrednosti naponskih referenci angažovanih generatora na uspostavljene naponsko-reaktivne prilike. Verifikacija metode je bila obavljena u okviru statičkog i dinamičkog simulacionog modela, na primerima ostvarenog i perspektivnih stanja prenosne mreže Srbije, u njenom širokom okruženju. Primena u realnom vremenu bila bi omogućena posredstvom estimatora stanja koji se nalazi u sastavu novog SCADA/EMS sistema, implementiranom u Nacionalnom Dispečerskom Centru Elektromreže Srbije. Prva praktična iskustva u sagledavanju mogućnosti primene predložene metode u realnom vremenu, stečena su na modelu realne elektroenergetske interkonekcije koju sačinjavaju EES Srbije, Crne Gore, Bosne i Hercegovine, Hrvatske, Mađarske, Makedonije, Rumunije, Bugarske, Grčke i Albanije. THE EFFECTS OF GENERATOR VOLTAGES CONTROL IN REAL TIME ABSTRACT This papers presents the possibility effects of application in real-time a method for fast and sufficiently accurate definition of generator voltages to realize the favourable voltage-reactive states of electric power interconnection. In peak- load condition, this control is made to improve the economic operation, e.g. to reduce the active and reactive power losses. In low-load condition, this control is made to reduce the generator under-exitation states. The development of this method is inspired by known fact of great influence of adequate choice of generator voltage on established voltage-reactive states. The verification of method proposed is made in context of steady-state and dynamic simulation model, on the example of realized and perspective states of Serbian transmission network. The application in real time will be realised by state estimator, which is the part of the new SCADA/EMS system in NDC Elektromreza Srbije. The first practical experiences of the possibility of the application in real time, of the method proposed, has been established on the model of real interconnection, which consists of the EPSs of Serbia, Montenegro, Bosnia and Herzegovina, Hungary, Croatia, Macedonia, Romania, Bulgaria, Greece and Albania. « hide
  Symposium Session: Thermal, hydro, wind and other Power Plants | Eksploatacioni problemi termo, hidro, vetro i drugih elektrana