Emergency power supply control system and method for nuclear power plant

Abstract

The invention discloses a nuclear power plant emergency power supply control system and method. The system comprises a direct current bus, a lithium battery power supply device, a solar power supply device, a wind energy power supply device, a hydrogen power supply device, a system working power supply, a dual-power-supply automatic change-over switch and an energy management device. The energy management device comprises a standby working condition control unit and an emergency working condition control unit, and the emergency working condition control unit comprises a time judgment assembly which is used for judging whether the time for entering the emergency working condition is lower than a time threshold value or not and selectively outputting a lithium battery power supply signal or an auxiliary energy power supply signal. According to the emergency power supply control system and method for the nuclear power plant, three clean energy power supply devices are arranged and managed through the energy management device, so that the clean energy is effectively utilized to supply power and charge under the condition of ensuring the supply of the emergency power supply, the reliability of the system is improved, the operation and maintenance difficulty is reduced, the electricity cost is reduced, and the exhaust emission and noise pollution are reduced.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant emergency power supply, in particular to a nuclear power plant emergency power supply control system and method. Background technique [0002] At present, the LLS system (hydraulic test pump turbine generator set), emergency command center and security building of nuclear power plants are all equipped with 380V emergency diesel engines and power distribution equipment. When the external power source is lost, the emergency diesel engine generates power to the downstream emergency load, and the diesel generator has the following problems: [0003] (1) The system is complex and contains mechanical rotating equipment, resulting in a high failure rate of equipment and a high risk of startup failure; [0004] (2) Exhaust gas after diesel combustion is discharged during power generation, polluting the environment; [0005] (3) The noise is loud during power generation, which affects the sur...

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Problems solved by technology

[0003] (1) The system is complex and contains mechanical rotating equipment, resulting in a high failure rate of equipment and a high risk of startup failure;

[0004] (2) Exhaust gas after diesel combustion is discharged during power generation, polluting the environment;

[0005] (3) The noise is loud during power generation, which affects the surrounding people;

[0006] (4) The oil storage tank occupies a large area, and the cost of regular replacement of diesel in the oil tank is high

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