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Fuzzy control-based research reactor power automatic adjustment method

An automatic adjustment and fuzzy control technology, which is applied in the control of nuclear reactions, reactors, and reduction of greenhouse gases, can solve the problems of mathematical models describing the dynamics of the system and cannot meet the requirements, so as to achieve simple and effective models, ensure power operation, and ensure operation safe effect

Active Publication Date: 2020-08-21
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology

At present, all newly-built research reactors adopt a digital power automatic adjustment system. For the reactor power, because there are too many variables affected and it is a dynamic change process, it is difficult to describe the dynamics of the system with an accurate mathematical model. The traditional PID adjustment method is used in practical applications. often fail to meet the requirements

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  • Fuzzy control-based research reactor power automatic adjustment method
  • Fuzzy control-based research reactor power automatic adjustment method
  • Fuzzy control-based research reactor power automatic adjustment method

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the drawings and embodiments.

[0026] The technical index requirements of the research reactor power automatic adjustment system often include the introduction of specific step reactivity, the maximum overshoot of the system, the adjustment time of the system, the number of oscillations, etc. For example, the technical index of the power automatic adjustment system of a certain reactor is: when the reactivity step input is 5×10 -4 When △k / k, the maximum overshoot of the system is less than 7% of the given power, the adjustment time is less than 3s, the static error is less than ±1% of the given power, and the number of oscillations is 1 to 2.

[0027] The automatic power adjustment system can use a variety of reliable computer control systems that meet the needs of specific reactor types, and consist of corresponding hardware equipment, software and computer networks. The system realizes the monitorin...

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Abstract

The invention relates to a fuzzy control-based research reactor power automatic adjustment method. The method comprises the following steps: establishing a coordinate system by taking a reactor powermultiple period and a reactor power deviation percentage as horizontal and vertical coordinates respectively, dividing the reactor power multiple period and the reactor power deviation percentage intoa plurality of intervals, and setting different target rod speeds of an adjusting rod for intersection areas of different intervals; calculating a reactor power multiple period and a reactor power deviation percentage according to the current reactor power; and determining an area to which the reactor power multiple period and the reactor power deviation percentage belong in the coordinate systemaccording to a calculation result, and driving an adjusting rod according to a target rod speed set in the area. The method is simple and effective, the operation safety of a research reactor is ensured, and the long-term stable power operation of the research reactor is also ensured.

Description

Technical field [0001] The invention belongs to reactor power control technology, and in particular relates to a method for automatically adjusting the power of a research reactor based on fuzzy control. Background technique [0002] Research reactor refers to a nuclear reactor that mainly uses neutrons produced by controlled nuclear fission in it for various scientific experiments and engineering applications. When the research reactor is operating at different power steps, the reactor power will change due to the reactivity disturbance of the reactor itself, the entry and exit of test samples, temperature changes, rod position changes, and poison changes. In order to ensure safety, the reactor power needs to be stabilized for a long period of time, mainly by relying on the automatic regulating rod, drive mechanism, nuclear power measurement system and power automatic adjustment control system. The principle is that the nuclear power measurement system measures the current reac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C7/02G21C7/00
CPCG21C7/02G21C7/00Y02E30/30
Inventor 甄建霄罗忠
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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