Reference : Reverse-logic control of load tap changers in emergency voltage conditions
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Reverse-logic control of load tap changers in emergency voltage conditions
Otomega, Bogdan [> >]
Sermanson, Vincent [> >]
Van Cutsem, Thierry mailto [Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation >]
Proc. IEEE Bologna Power Tech conference
paper No. 450
2003 IEEE Bologna Power Tech conference
du 23 juin 2003 au 26 juin 2003
University of Bologna
[en] Long-term dynamics ; load tap changers ; voltage instability ; Emergency control ; coordinated voltage control
[en] This papers deals with the emergency control of Load Tap Changers (LTCs) to face low transmission voltages or voltage instability situations. The proposed simple control logic consists in reverting the tap movements once the voltage at a monitored transmission bus falls below some threshold. A deadband on this voltage allows the system to settle down in between the normal and reverse logic modes. In order to control a large number of LTCs, the latter are divided into clusters, each with its own monitored voltage. The paper also considers the control of two levels of LTCs in cascade, where proper coordination is required between the two levels. The proposed scheme has been tested on a detailed EHV-HV-MV planning model of the Western region of the French transmission system operated by RTE. Long-term time responses to major
disturbances are shown to illustrate the performance of the proposed scheme.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers ; Professionals ; Students
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