Active disturbance rejection control method used for fast reactor power and coolant outlet temperature

A technology of active disturbance rejection control and outlet temperature, applied in the field of nuclear power plant control, can solve problems such as not yet widely applied in engineering, difficult parameter setting, complicated design structure, etc., and achieve the effect of simple structure, lighten complex burden, and excellent control effect.

Active Publication Date: 2018-12-11
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

These control algorithms have achieved certain results, but due to the shortcomings of most of them, such as comple

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  • Active disturbance rejection control method used for fast reactor power and coolant outlet temperature
  • Active disturbance rejection control method used for fast reactor power and coolant outlet temperature
  • Active disturbance rejection control method used for fast reactor power and coolant outlet temperature

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Embodiment Construction

[0041] The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0042] Overview and examples of Linear Active Disturbance Rejection Control (LADRC) applications in many fields, including fast tool servo control in precision lathes, frequency conversion speed control of asynchronous motors, uncertain time-delay systems, ship heading control, aircraft Attitude control, etc., have shown the great potential of ADRC technology. In the field of power generation, LADRC has also achieved good control results in the simulation control of thermal power unit coordination system, boiler combustion and load frequency control, thermal power plant main steam temperature control system, and nuclear power plant steam generator water level control. The present invention proposes an active disturbance rejection control method for lead-cooled fast reactor power, such as figure 1 , 2 shown, including:

[0043]S1: Establish the point reactor dynamic equa...

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Abstract

The invention belongs to the nuclear power plant control technology field and especially relates to an active disturbance rejection control method used for fast reactor power and a coolant outlet temperature. The method comprises the following steps of establishing point reactor dynamic equation according to a neutron characteristic in a reactor, establishing the average temperature equation of afast reactor fuel and a coolant outlet temperature equation according to the law of conservation of macroscopic energy, and establishing the reaction equation of a control rod and a reactor overall reactivity equation; acquiring a fast reactor power and coolant outlet temperature second-order differential equation; designing an active disturbance rejection controller based on linear extended stateobserver; determining an extended state observer bandwidth range, and determining a PD bandwidth range by using deviation and executing mechanism motion speed allowing range; giving a coolant outlettemperature during the balance of a system and the fast reactor power during the balance of the system, carrying out LADRC parameter setting, acquiring a controller bandwidth and an observer bandwidth, determining a reactor power control system and a coolant outlet temperature control system, and completing active disturbance rejection control.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant control, and in particular relates to an active disturbance rejection control method for fast reactor power and coolant outlet temperature. Background technique [0002] Nuclear power plant units are highly complex nonlinear systems whose parameters are functions of operating power, nuclear fuel burnout and control rod values, and vary with time. Special consideration must be given to these factors when large power fluctuations occur under load following conditions. Compared with thermal reactors, fast reactors have higher enrichment, harder energy spectrum, smaller Doppler effect than thermal reactors, and the short life of prompt neutrons in fast reactors, small proportion of delayed neutrons, and reactivity disturbance The fast reactor power changes rapidly, requiring the fast reactor control system to have better transient response characteristics. Most of the existing reactors a...

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 周世梁刘凤鸣刘玉燕沈聪
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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