Nuclear power plant control rod rod-drop time detecting method and electronic equipment

Abstract

The invention discloses a nuclear power plant control rod rod-drop time detecting method. The nuclear power plant control rod rod-drop time detecting method comprises the following steps: (1) acquiring a holding coil signal and a primary coil signal of a detector; (2) cutting out one section of holding coil signal waveform at an initial stage, getting a mean value to obtain a maximum value stablepoint of the holding coil signal; (3) automatically identifying a point where holding coil current end disappears according to the cholding oil signal, automatically identifying a point where the control rod starts to drop, a point where the control rod reaches a stack bottom, and a point where the control rod stop dropping according to the primary coil signal of the detector, calculating the rod-drop time according to the point where holding coil current end disappears, the point where the control rod starts to drop, the point where the control rod reaches a stack bottom, and the point wherethe control rod stop dropping, wherein the point where holding coil current end disappears is first percentage when the holding coil signal drops to a maximal value stable point, determining the pointwhere holding coil current end disappears according to the maximal value stable point, and measuring accurate rod-drop parameters. The invention further discloses corresponding electronic equipment and a computer readable storage medium.

Description

technical field [0001] The invention relates to the field of nuclear power, in particular to detection of the drop time of control rods in nuclear power plants. Background technique [0002] During the start-up, power conversion and shutdown of the nuclear power plant, the reactivity of the reactor is controlled by controlling the lifting, insertion and maintenance of the control rods, so as to ensure that the reactor is always working in a controlled state. According to the different positions and functions of the control rods in the core, the control rods are usually divided into groups (such as temperature rod groups, power rod groups, shutdown rod groups, etc.), and the four control rods in the same subgroup are symmetrical in the core Arrangement (the control rods in the center of the core are separately a subgroup), and they are linked during operation. [0003] The lifting, inserting and holding motions of the control rods are realized by the control rod drive mechan...

AI Technical Summary

Problems solved by technology

The whole process makes the SG current rise from half current and then drop to zero. At this time, it is difficult to determine the power-off time of the coil, and it is impossible to measure accurate drop parameters.

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