METHOD OF PERFORMING CIRCUIT OPENING AND CLOSING OPERATION, COMPUTER PROGRAM, CONTROL SYSTEM AND POWER SYSTEM
A method of performing a circuit opening and closing operation in a power system (16a; 16b) comprising three phases (L1-L3), a three-phase transformer (20a; 20b), and a circuit breaker system (18), the method comprising a) opening all three phases simultaneously such that a reference current (I1-I3)...
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Main Authors | , |
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Format | Patent |
Language | English French German |
Published |
02.10.2024
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Subjects | |
Online Access | Get full text |
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Summary: | A method of performing a circuit opening and closing operation in a power system (16a; 16b) comprising three phases (L1-L3), a three-phase transformer (20a; 20b), and a circuit breaker system (18), the method comprising a) opening all three phases simultaneously such that a reference current (I1-I3) of a reference phase is interrupted first at a first current zero crossing (42, 44) after the opening; and b) closing all three phases simultaneously at a phase to ground voltage (Vpg) of the phase lagging the reference phase by 120°, in a time range (Ci) of ±90° from a negative peak (46) of said phase to ground voltage if the current zero crossing is a positive current zero crossing, or in a time range (C2) of ±90° from a positive peak (48) of said phase to ground voltage if the current zero crossing is a negative current zero crossing. |
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Bibliography: | Application Number: EP20230164524 |