Method and device for evaluating health state of DCDC circuit of instrument control board card
A technology for health assessment and health status, applied in the field of DCDC circuit health status assessment of instrument control boards, can solve the problems of not carrying out DCDC circuit health status assessment, unable to identify power module faults in advance, etc., to improve safety and economy. Effect
Pending Publication Date: 2022-02-25
CHINA TECHENERGY
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[0003] At present, the known nuclear power I&C cards are equipped with a power failure self-diagnosis function, which can simply feed back the on-off status of the power module through the operation of the DCDC circuit, but the health status assessment of the DCDC circuit has not been carried out, and the failure of the power module cannot be identified in advance , to ensure that the instrument control board plays a more stable and effective role in the instrument control system
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[0039] Applicants found in the study, as the nuclear power control system is running in the power plant, the performance of the board power module will inevitably in the process of degradation, and the prior art only gives an indication after the board power is lost. Then affect the function of the single board card, which is heavy to cause the stop of the power station. The reason, the existing technology has the following shortcomings: First, a set of evaluation processes on the health of the nuclear power control panel DCDC circuit, and the health status of the board depends mainly on the subjective judgment of the system engineer, and the experience is serious; Second, there is lacking evaluation index to effectively reflect the health status of the nuclear power control panel DCDC circuit. For nuclear power control panel power modules, the failure of the module presents random characteristics due to its health degradation characteristics. Therefore, it is necessary to further...
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The invention provides a method and device for evaluating a health state of a DCDC circuit of an instrument control board card. The method comprises the following steps: acquiring operation monitoring data of the DCDC circuit of the instrument control board card in real time; and inputting the operation monitoring data into a preset health assessment model, and determining an assessment state of the DCDC circuit of the instrument control board to assess the health state of the DCDC circuit of the instrument control board, the preset health assessment model comprising a standard health assessment index and a standard health threshold. According to the invention, real-time quantitative evaluation of the health state of the DCDC circuit of the nuclear power instrument control board card can be realized, and the health state of the DCDC circuit of the board card can be evaluated in real time in the operation process of a nuclear power unit, so that the fault of a power supply module can be identified in advance, and the instrument control board card can play a more stable and effective role in an instrument control system, thereby improving the safety and economy of the nuclear power instrument control system.
Description
Technical field [0001] The present application relates to nuclear power control technology, in particular, in particular, to a health status assessment method and apparatus for instrumental card DCDC circuitry. Background technique [0002] Nuclear power control card pieces are the main equipment constituting the instrument-controlled system, which plays a vital role in the safe operation of nuclear power systems. According to the analysis statistics of the fault pattern of the on-site board fault data, it is known that the board power conversion unit is the most prone to failure in all kinds of board composers. The primary core module is a DC-DC converter, which directly affects the board. Normal operation. Therefore, it is very necessary to track and evaluate the health status of the DCDC circuit. [0003] At present, known nuclear power control card pieces set up power supply power failure self-diagnosis, and can simply feed back the power module of the power module through th...
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IPC IPC(8): G06Q10/06
CPCG06Q10/06393G06Q10/067
Inventor 赵小鹏石桂连李刚贾虎军吴瑶王嫘莫昌瑜李明利
Owner CHINA TECHENERGY