FIELD: power engineering; power stations.
SUBSTANCE: proposed synchronous generator is connected to power transmission line through communication unit, protection unit, and circuit breaker. Exciter connected to generator rotor has its input connected to field regulator. Input of the latter is connected to generator stator through current and potential transformers. Upon occurrence of short circuit in line, regulator functions to force current through generator rotor. Protection unit operates and sends instruction for opening line circuit breaker. At the same time signal is passed through shaper to regulator for reducing field current. By moment when circuit breaker contacts open generator rotor current reduces. That is why generator rotor magnetic field changes to a lower extent when circuit breaker opens. Lower overvoltage is induced in rotor thereby reducing insulation breakdown probability in rotor and exciter.
EFFECT: enhanced reliability.
2 cl, 2 dwg
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