A Fuzzy Control-Based Automatic Power Regulation Method for Research Reactor

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: 2022-05-13
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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  • A Fuzzy Control-Based Automatic Power Regulation Method for Research Reactor
  • A Fuzzy Control-Based Automatic Power Regulation Method for Research Reactor
  • A Fuzzy Control-Based Automatic Power Regulation Method for Research Reactor

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Embodiment Construction

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

[0026] The technical index requirements of the research reactor power automatic regulation system often include the introduction of specific step reactivity, the maximum overshoot of the system, the regulation 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 1-2.

[0027] The power automatic adjustment system can use various reliable computer control systems that meet the needs of specific reactor types, and is composed of corresponding hardware equipment, software and computer networks. The system reali...

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Abstract

The present invention relates to a research reactor power automatic adjustment method based on fuzzy control. The method takes the reactor power doubling period and the reactor power deviation percentage as the abscissa and ordinate respectively, establishes a coordinate system, and takes the reactor power doubling period and the reactor power deviation percentage Divide it into several intervals, set different target rod speeds for the adjustment rods for the intersecting areas of different intervals; calculate the reactor power doubling period and reactor power deviation percentage according to the current reactor power; determine the position in the coordinate system according to the calculation results area, the adjusting rod is driven according to the target rod speed set in this area. The method is simple and effective, which not only ensures the operational safety of the research reactor, but also ensures the long-term stable power operation of the research reactor.

Description

technical field [0001] The invention belongs to the reactor power control technology, in particular to a research reactor power automatic adjustment method based on fuzzy control. Background technique [0002] A research reactor refers to a nuclear reactor that mainly uses neutrons produced by controlled nuclear fission to conduct various scientific experiments and engineering applications. When the research reactor operates 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, it is necessary to stabilize the power of the reactor for a long time, mainly relying on automatic adjustment rods, driving mechanisms, nuclear power measurement systems and automatic power adjustment control systems. The principle is that the nuclear power measurement system measures the current reactor power, the pow...

Claims

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Application Information

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Patent Type & Authority Patents(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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