ON-LOAD TAP CHANGER CONTROL METHOD FOR A POWER EXCITATION CHAIN, RELATED UNIT AND POWER EXCITATION CHAIN COMPRISING SUCH UNIT

ON-LOAD TAP CHANGER CONTROL METHOD FOR A POWER EXCITATION CHAIN, RELATED UNIT AND POWER EXCITATION CHAIN COMPRISING SUCH UNIT

The present invention relates to an on-load tap changer control method for a power excitation chain. The chain includes a generator, a step-up transformer equipped with an on-load tap changer and connected on the one hand to the output of said generator and on the other hand to a transmission bus, a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: MEINECKE CARSTEN
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:The present invention relates to an on-load tap changer control method for a power excitation chain. The chain includes a generator, a step-up transformer equipped with an on-load tap changer and connected on the one hand to the output of said generator and on the other hand to a transmission bus, and an excitation control system comprising a generator automatic voltage regulator (AVRG) and at least one excitation limiter (OELG, UELG). The method includes monitoring the excitation conditions of the generator, activating said at least one excitation limiter (OELG, UELG) when the monitored excitation conditions are outside a predefined range, inhibiting temporarily the change of step of said on-load tape changer.