Line protection control method and microcomputer protection device
A technology of microcomputer protection device and control method, which is applied in the field of power transformation and distribution, and can solve problems such as large excitation inrush current
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[0058] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.
[0059] At present, overhead power supply lines are easily affected by tree branches touching lines, lines being struck by lightning, etc., and feeder circuit breakers will perform protection trips such as quick-break or over-current. When a transformer on the feeder has a short-circuit fault, the circuit breaker will perform quick-break or over-current protection tripping. When the circuit breaker trips for protection, the maintenance personnel repair the short-circuit fault, and the operator restores the power transmission to the feeder. In theory, the circuit breaker can be closed successfully after the short-circuit fault is processed, but in fact, due to the influence of the excitation inrush current, the circuit breaker of the feeder is often unsuccessfully closed, and the protecti...
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