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Nuclear power plant standby power supply system and control method thereof

A technology of backup power supply and control method, which is applied to the integration of power network operating system, emergency power supply arrangement, information technology support system, etc., can solve the problems of long startup time, high cost, complex structure of backup power supply, etc. The effect of prolonging service life, improving system economy and environmental protection

Inactive Publication Date: 2020-09-22
国核示范电站有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a backup power supply system of a nuclear power plant, which solves the problems of complex structure, high cost and long start-up time of the backup power supply, has a simple structure and low cost, and can further improve the in-depth defense capability of the nuclear power plant

Method used

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  • Nuclear power plant standby power supply system and control method thereof
  • Nuclear power plant standby power supply system and control method thereof
  • Nuclear power plant standby power supply system and control method thereof

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Embodiment 1

[0031] Embodiment 1 of the present invention provides a backup power supply system for a nuclear power plant, and this embodiment is applicable to an application scenario where a battery assembly is used as an independent backup power supply. figure 1 It is a structural schematic diagram of a nuclear power plant backup power supply system provided by Embodiment 1 of the present invention.

[0032] Such as figure 1 As shown, the nuclear power plant backup power system 01 provided by Embodiment 1 of the present invention includes: a control module 10 and a battery backup system 20, wherein the battery backup system 20 includes a battery assembly 201 and a bidirectional AC-DC conversion unit 202, and the battery The assembly 201 is connected to the power supply bus 02 through the bidirectional AC-DC conversion unit 202; the control module 10 is connected to the battery assembly 201 and the bidirectional AC-DC conversion unit 202 respectively, and the control module 10 is used to ...

Embodiment 2

[0040] Embodiment 2 of the present invention provides a backup power supply system 01 of a nuclear power plant. This embodiment is applicable to an application scenario where a combination of a battery assembly 201 and a generator is used as a backup power supply. figure 2 It is a schematic structural diagram of a backup power supply system 01 for a nuclear power plant provided in Embodiment 2 of the present invention.

[0041] Such as figure 2 As shown, the nuclear power plant backup power system 01 provided by Embodiment 2 of the present invention also includes a generator backup system 30, and the generator backup system 30 includes a generator set 301 and a generator management unit 302, wherein the generator set 301 and the power supply bus 02 connection, the generator management unit 302 is used to detect the speed and output voltage of the generator set 301, and send the speed and output voltage to the control module 10; the control module 10 is also used to Control ...

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Abstract

The invention discloses a nuclear power plant standby power supply system and a control method thereof.The system comprises a control module, a generator standby power supply system and a battery packstandby power supply system; the battery pack standby power supply system comprises a battery assembly and a bidirectional AC-DC conversion unit; the generator standby power system comprises a generator set and a generator management unit, the generator set is connected with apower supply bus, and the generator management unit is used for detecting the rotating speed and the output voltage of thegenerator set and sending the rotating speed and the output voltage to the control module; the control module is used for controlling the battery assembly to supply power to the power supply bus through the bidirectional AC-DC conversion unit and controlling the generator set to start when the nuclear power plant power supply system is powered down; the control module is further used for controlling the battery assembly to stop supplying power to the power supply bus when the rotating speed reaches the preset rotating speed and the output voltage reaches the preset voltage. The standby powersupply system provided by the invention is simple in structure and rapidin switching response, and is beneficial to improving the depth defense capability of the nuclear power plant.

Description

technical field [0001] The invention relates to the technical field of power supply, in particular to a backup power supply system of a nuclear power plant and a control method thereof. Background technique [0002] With the development of nuclear power technology, the third-generation nuclear power has proposed the concept of passive. Passive nuclear power plants refer to nuclear power plants that adopt AP1000, CAP1000 or CAP1400 technology, where "C" represents the initial letter of China (China), " A" is the first letter of Advanced (advanced), "P" is the first letter of Passive (passive), 1000 means that the installed capacity is 1 million kilowatts, and 1400 means that the installed capacity is 1.4 million kilowatts. [0003] In passive nuclear power plants, it is necessary to configure a backup power supply. When the nuclear power plant loses the off-site power supply and the on-site power supply of the nuclear power plant trips, the backup power supply is connected to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06H02J9/08
CPCH02J9/062H02J9/08Y02B70/30Y04S20/20
Inventor 颜岩刘春光黄晓杰
Owner 国核示范电站有限责任公司