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PWR nuclear power unit overspeed protection control optimization system and optimization control method

A technology for nuclear power units and overspeed protection, applied in mechanical equipment, engine components, machines/engines, etc., can solve the problem that the dynamic characteristics of the system have not been simulated and verified, and achieve the effect of optimizing the protection effect and eliminating potential safety hazards.

Active Publication Date: 2021-04-13
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most thermal power units in my country have installed OPC protection devices with relatively mature technology and theory, but in nuclear power units, the reasonable OPC scheme and the dynamic characteristics of the system under its action have not been verified by simulation

Method used

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  • PWR nuclear power unit overspeed protection control optimization system and optimization control method
  • PWR nuclear power unit overspeed protection control optimization system and optimization control method
  • PWR nuclear power unit overspeed protection control optimization system and optimization control method

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Embodiment Construction

[0023] In order to better understand the present invention, the present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0024] Such as figure 1 As shown, the PWR nuclear power unit is a general model of the PWR nuclear power unit, including a primary loop model and a secondary loop model. The secondary loop model of the pressurized water reactor nuclear power unit includes the steam turbine speed control system and the steam turbine. The steam turbine speed control system includes the governor. unit, electro-hydraulic converter, relay and hydraulic oil motor, the speed governor obtains the speed deviation signal and power deviation signal of the pressurized water reactor nuclear power unit respectively by the speed measurement unit and the dynamometer unit, and the speed deviation signal is obtained by the electro-hydraulic converter The electrical signal corresponding to the signal and the power deviation signal i...

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Abstract

The invention relates to the technical field of pressurized water reactor nuclear power unit control, in particular to an overspeed protection control optimization system and an optimization control method for a pressurized water reactor nuclear power unit. The overspeed protection control optimization system is added to the pressurized water reactor nuclear power unit, and different OPC trigger modes are selected. With different valve closing methods and their reasonable cooperation, the overspeed of the PWR nuclear power unit can be suppressed more quickly and effectively, and the protection effect of the overspeed protection control on the PWR nuclear power unit can be further optimized. By controlling the pressurized water reactor nuclear power unit through the present invention, the speed failure of the pressurized water reactor nuclear power unit can be eliminated quickly, and the safety hazard of the steam turbine of the nuclear power unit can be eliminated.

Description

technical field [0001] The invention relates to the technical field of pressurized water reactor nuclear power unit control, in particular to an optimization system and an optimization control method for overspeed protection and control of a pressurized water reactor nuclear power unit. Background technique [0002] During the operation of the steam turbine of a large unit, the Overspeed Protection Control (OPC) is the first line of defense for the unit's high-frequency protection. The overspeed of the steam turbine is often manifested as the soaring speed of the unit when the electrical load is reduced. OPC quickly closes the high-pressure valve and the medium-pressure valve inside the steam turbine to reduce the mechanical power output by the unit to limit the excessive increase in the speed of the unit. The quick-closing effect of OPC on the steam valve is to some extent a disturbance similar to a step signal for the steam turbine, which may bring other negative effects w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D21/00F01D17/10F01D17/24
CPCF01D17/10F01D17/24F01D21/00
Inventor 文立斌李俊孙艳张翌晖刘光时雷亭吴健旭卢万里廖卫国
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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