Validity processing method and device for core cooling monitoring signal
A core cooling and monitoring signal technology, applied in the field of nuclear power plant monitoring, can solve the problems of poor validity judgment performance and low reliability of the core cooling monitoring system, achieve quantification, improve accuracy and credibility, and solve errors The effect of the operation
Active Publication Date: 2021-09-24
CHINA TECHENERGY
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[0005] In view of the above analysis, the embodiment of the present invention aims to provide a core monitoring signal validity processing method and processing device to solve the problems of low reliability and poor validity judgment performance of the existing core cooling monitoring system
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[0051] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.
[0052] A specific embodiment of the present invention discloses a method for processing the effectiveness of core cooling monitoring signals, such as figure 1 shown, including:
[0053] Step S11. Perform temperature validity processing based on the collected core temperature measurement signal to obtain the maximum value of the effective temperature measurement signal;
[0054] Specifically, the temperature measurement signal is the core temperature signal at different positions measured in the same period, and may be a thermocouple temperature signal and / or a thermal resistance temperature s...
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The invention relates to a method and device for processing the validity of a core cooling monitoring signal, belonging to the technical field of nuclear power plant monitoring, and solving the problems of low reliability and poor validity judgment performance of the existing core cooling monitoring system in the prior art. The method includes: performing temperature validity processing based on the collected core temperature measurement signals to obtain the maximum value of the effective temperature measurement signals; obtaining the absolute pressure of the primary circuit based on the relative pressure of the primary circuit of the core; and calculating the absolute pressure based on the primary circuit Obtain the saturation temperature; obtain the first core saturation margin according to the maximum value of the effective temperature measurement signal and the saturation temperature. The invention not only realizes the validity judgment of the temperature measurement signal, but also improves the reliability of the output signal and the precision of the system through redundant mutual correction.
Description
technical field [0001] The invention relates to the technical field of nuclear power plant monitoring, in particular to a method and device for validly processing core cooling monitoring signals. Background technique [0002] The role of the core cooling monitoring system is to continuously monitor parameters such as core temperature, subcooling margin, and pressure vessel water level. These parameters are level 1 parameters after the accident. Although the core cooling monitoring system does not directly undertake the safety function, the whole system belongs to safety level 1E. Therefore, the uninterrupted monitoring of the parameters in the core has important application value. [0003] The function of the traditional core cooling monitoring system is relatively simple. The temperature measurement signal is only judged for over-range to judge whether the temperature measurement signal has temperature drift and disconnection faults. At the same time, the on-site operators...
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IPC IPC(8): G21C17/02
CPCG21C17/02Y02E30/30
Inventor 宗翔鹏孙洪涛白玮夏利民李启明王庆明鲁超
Owner CHINA TECHENERGY