A TRANSFORMER ASSEMBLY FOR ELECTRIC GRIDS AND A RELATED CONTROL METHOD

A transformer assembly (1) for electric grids comprising:- an electric transformer (2) comprising a magnetic core (20), a first side (2A) including one or more first windings (21) enchained with said magnetic core and adapted to be electrically connected to a first grid section (50) and a second sid...

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Bibliographische Detailangaben
Hauptverfasser:	Bordon, Ruggero, Valori, Valentina
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROLLING CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PHYSICS REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	A transformer assembly (1) for electric grids comprising:- an electric transformer (2) comprising a magnetic core (20), a first side (2A) including one or more first windings (21) enchained with said magnetic core and adapted to be electrically connected to a first grid section (50) and a second side (2B) including one or more second windings (22) enchained with said magnetic core and adapted to be electrically connected to a second grid section (60);- a tap changer (3) operatively associated with said electric transformer (2) to vary the number of turns enchained with said magnetic core (20) for said first windings (21) or for said second windings (22).The transformer assembly comprises a control unit (6) operatively coupled with said tap changer (3) to control the operation of said tap changer, said control unit being configured to:- acquire input data (IN) indicative of an electrical connectivity condition of said second grid section (60) with said second windings (22);- basing on said input signals (IN), determine whether said transformer (2) is in a load condition or in a no-load condition;- if said transformer (2) is in a no-load condition, command said tap changer to set a maximum available number of turns for said first windings (21) or for said second windings (22).