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A core average quadrant power tilt ratio calibration system and method

A technology of average power and calibration system, applied in the direction of reactor, nuclear reactor monitoring, greenhouse gas reduction, etc., can solve the problems of insufficient authenticity and reliability, value exceeding the limit requirements, influence, etc., to ensure safe and stable operation.

Active Publication Date: 2022-07-05
SANMEN NUCLEAR POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the online core monitoring system is not available, based on the current unit configuration, using the quadrant power slope ratio outside the reactor that characterizes the weighted power distribution of the periphery directly as the criterion for supervision has insufficient authenticity and reliability, and due to the lack of regular normalization processing , and its value may even exceed the limit value requirements. In this case, according to the requirements of the technical specification, the unit will have to implement corresponding compensation measures, which may have unexpected and unnecessary impact on the operation of the unit

Method used

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  • A core average quadrant power tilt ratio calibration system and method

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Effect test

example 1

[0056] The maximum quadrant power tilt ratio of the power plant: 1.04

[0057] Judgment set value: 1.02

[0058] Online Monitoring System Status: Available

[0059] The total power and AFD acquisition module 7 acquires the total power and AFD data in the power plant system 3 at the current moment, and inputs them into the upper and lower core average power calculation modules 8; the upper and lower core average power calculation modules 8 obtain the total power, AFD Obtain the total power and AFD data input by module 7, according to the formula P avg,up +P avg,lo =P and P avg,up -P avg,lo =AFD calculates the average power of the upper and lower cores, and inputs it into the calibration factor calculation module 9; the uncalibrated nuclear power acquisition module 2 obtains the uncalibrated nuclear power of the upper and lower parts of the reactor at the current moment, and inputs its input signal into the calibration The factor calculation module 9; the calibration factor...

example 2

[0062] Power plant maximum quadrant power tilt ratio: 1.025

[0063] Judgment set value: 1.02

[0064] Online Monitoring System Status: Not Available

[0065] The total power and AFD acquisition module 7 acquires the total power and AFD data in the power plant system 3 at the current moment, and inputs them into the upper and lower core average power calculation modules 8; the upper and lower core average power calculation modules 8 obtain the total power, AFD Obtain the total power and AFD data input by module 7, according to the formula P avg,up +P avg,lo =P and P avg,up -P avg,lo =AFD calculates the average power of the upper and lower cores, and inputs it into the calibration factor calculation module 9; the uncalibrated nuclear power acquisition module 2 obtains the uncalibrated nuclear power of the upper and lower parts of the reactor at the current moment, and inputs its input signal into the calibration The factor calculation module 9; the calibration factor calcu...

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Abstract

A core average quadrant power tilt ratio calibration system and method belong to the technical field of nuclear power plant core safety. The system of the present invention includes a total power and AFD acquisition module for acquiring the thermal power and AFD data in the power plant system at the current moment; the upper and lower core average power calculation modules are used for calculating according to the data acquired by the total power and the AFD acquisition module Obtain the average power of the upper and lower cores; the uncalibrated nuclear power acquisition module is used to obtain the uncalibrated nuclear power of the upper and lower outer cores at the current moment; the calibration factor calculation module is used to calculate the average power of the upper and lower cores The data from the module and the data from the uncalibrated nuclear power acquisition module are used to calculate the power slope ratio calibration factor for the upper and lower channel quadrants outside the reactor. The invention can timely and effectively calibrate the power inclination ratio of the quadrant outside the reactor, so as to ensure the stable operation of the unit.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant core safety, in particular to a system and method for calibrating the average quadrant power inclination ratio of the core. Background technique [0002] The quadrant power tilt ratio (QPTR) is an important content of nuclear power plant safety supervision, and its purpose is to ensure that the total radial power distribution still conforms to the design value used in the safety analysis when the on-line core monitoring system is unavailable, ensuring that the core The power density at any point is limited. [0003] Typical third-generation nuclear power units are generally equipped with off-core power range detectors (referred to as off-core detectors) and in-core fixed self-sufficient energy detectors (referred to as in-core detectors). The in-core detectors are non-safety-related equipment. By acquiring the core status in real time and converting them into detector current data, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C17/10G21D1/02
CPCG21C17/10G21D1/02Y02E30/30Y02E30/00
Inventor 李昂郝腾飞杜超周健司峰伟钱仲悠滕良鹏陈理江丁针挺刘晶石浩宇赵一凡金岚岚
Owner SANMEN NUCLEAR POWER CO LTD
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