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Method and device for fitting emergency protection worth by measuring single-group rod worth

A technology of emergency protection and value, which is applied in the field of nuclear reactor physical tests, can solve the problems of long time, the measured value of emergency protection value is not necessarily accurate, and the basic theory needs to be discussed, so as to reduce the measurement time, increase the annual average capacity factor, and reduce overhaul the effect of time

Active Publication Date: 2018-08-17
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, how to calculate the measured value of the emergency protection value based on the measured integral value of each group of control rods, the current calculation method is relatively complicated, which makes the calculation take a lot of time, and the final simulation is obtained after using these calculation methods to calculate The measured value of the emergency protection value is not necessarily accurate, and its basic theory remains to be discussed

Method used

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  • Method and device for fitting emergency protection worth by measuring single-group rod worth
  • Method and device for fitting emergency protection worth by measuring single-group rod worth
  • Method and device for fitting emergency protection worth by measuring single-group rod worth

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Embodiment 1

[0082] The method of fitting the emergency protection value by measuring the value of a single group of rods in this embodiment is mainly applied in the pressurized water reactor nuclear power plant. In this embodiment, it is specifically applied in the WWER reactor type nuclear power plant (such as Tianwan Nuclear Power Plant).

[0083] Such as figure 1 As shown, in this embodiment, the method for calculating the emergency protection value mainly includes the following steps:

[0084] S1, obtain the sum of the calculated values ​​of the integral values ​​of each control rod group in n control rod groups

[0085] Among them, the selection of the number of control rod groups can be set according to the specific conditions of the nuclear power plant to which the method is applied. In this embodiment, n=10 is set, that is, 10 groups of control rods are used.

[0086] Specifically, the calculation program package is used to calculate the calculated value R of the integral valu...

Embodiment 2

[0110] Such as figure 2 As shown, in the present embodiment, the device for fitting the emergency protection value by measuring the value of a single group of rods includes:

[0111] The first acquisition unit is used to acquire the sum of the calculated values ​​of the integral values ​​of each control rod group in the n control rod groups

[0112] The second acquisition unit is used to acquire the calculated value EP of the emergency protection value when there is no stuck stick cal ;

[0113] The third acquisition unit is used to acquire the sum of the actual measured values ​​of the integral values ​​of each control rod group in the n control rod groups

[0114] Calculation unit, used to calculate the simulated test value according to the following formula (7) And take this value as the measured value EP of emergency protection value exp :

[0115]

[0116] In this embodiment, preferably, the first acquisition unit includes a first calculation package module ...

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Abstract

The invention discloses a method for fitting the emergency protection worth by measuring the single-group rod worth. The method includes the following steps that the sum (the formula is shown in the description) of calculated values of the integral worth of all control rod groups in n control rod groups is obtained; a calculated value EP<cal> of the emergency protection worth when rod clamping does not exist is obtained; the sum (the formula is shown in the description) of actual measured values of the integral worth of all the control rod groups in n control rod groups is obtained; a simulation test value (the formula is shown in the description) is calculated according to the formula (7) to serve as an actual measured value EP<exp> (the formula is shown in the description) of the emergency protection worth. The invention also discloses a device for fitting the emergency protection worth by measuring the single-group rod worth. By means of the method or the device, the actual measuredvalue of the emergency protection worth can be rapidly simulated and obtained according to the measured integral worth of the control rods.

Description

technical field [0001] The invention belongs to the technical field of nuclear reactor physical test methods, and in particular relates to a method and a device for fitting the emergency protection value by measuring the value of a single group of rods. Background technique [0002] During the fuel refueling start-up period of nuclear power plants, according to the requirements of the test program, the emergency protection value measurement test is required. [0003] In the emergency protection value measurement test, positive reactivity was first introduced by raising the tenth group of control rods, so that the reactive power was raised to a level close to 1% Nnom (rated power), and the reactor operator manually executed the emergency protection button, except for the stuck rods Except for the control rod bundle, all other control rods fell to the bottom of the core. After recording the data for 1 minute, the stuck rod bundle also fell to the bottom of the core to complete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q50/06
CPCG06Q50/06G06F30/20
Inventor 霍小东徐敏易璇王红霞郭治鹏
Owner CHINA NUCLEAR POWER ENG CO LTD
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