A Cascade Adaptive Volumetric Kalman Active Disturbance Rejection Control Method to Improve Flexible Operation of Thermal Power Units

A self-adaptive Kalman, active disturbance rejection control technology, applied in the direction of self-adaptive control, general control system, control/regulation system, etc., to achieve the effect of ensuring safe and stable operation

Active Publication Date: 2022-07-29
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
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Problems solved by technology

However, the traditional output-based ADRC still has a lot of room for improvement in terms of tracking performance and industrial implementation convenience.

Method used

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  • A Cascade Adaptive Volumetric Kalman Active Disturbance Rejection Control Method to Improve Flexible Operation of Thermal Power Units
  • A Cascade Adaptive Volumetric Kalman Active Disturbance Rejection Control Method to Improve Flexible Operation of Thermal Power Units
  • A Cascade Adaptive Volumetric Kalman Active Disturbance Rejection Control Method to Improve Flexible Operation of Thermal Power Units

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Embodiment Construction

[0086] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0087] Please refer to the drawings in the description figure 1 , figure 1 It is a structural diagram of the unit unit load control involved in the present invention. When the external load request command arrives, the load command processing circuit will select and process it to convert it into the actual load command N acceptable for the safe operation of the unit. s . The main controller of the machine furnace selects the load control method that meets the operating requirements of the unit, and accepts the actual load command N s , active power N, main steam pressure given value P s and main steam pressure P T Signal and generate steam turbine command (TD) and boiler command (BD), which are sent to steam turbine and boiler control system respectively. The combustion control system of the boiler changes the combustion rate by adjustin...

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Abstract

The invention discloses a cascade adaptive volume Kalman active disturbance rejection control method for flexible operation of thermal power units. Firstly, the coordinated control system of the ultra-supercritical unit is taken as the research object and its control difficulties are analyzed; then, the cascade adaptive volume Kalman active disturbance rejection control method is designed for it. Finally, the feasibility of the control method of the present invention is verified by means of a simulation platform, and the effectiveness of the control method is quantified and analyzed by performance indicators. In the analysis of the research object of the present invention, it is simplified to a system with three inputs and three outputs, and its dynamic characteristics are more accurately described. In addition, the present invention cascades the adaptive volumetric Kalman filter with high numerical precision and strong stability and the state observer based on the error form, so that the performance of the controller is significantly improved. To a large extent, the rapid load control ability of the system is improved, and the flexible operation ability of the unit is improved.

Description

technical field [0001] The invention relates to the technical field of coordinated control of flexible operation of thermal power generating units, and more particularly, to a cascade adaptive volumetric Kalman active disturbance rejection control strategy for improving the flexible operation capability of large thermal power generating units. Background technique [0002] In recent years, with the integration of large-scale renewable energy power generation into the power grid, problems such as shortage of fossil energy and environmental pollution have been effectively alleviated in my country. However, its accompanying strong randomness, volatility and intermittency seriously threaten the safe, economical and stable operation of the power grid. The Global Energy Interconnection Development Cooperation Organization pointed out that energy clean and low-carbon transformation and high-quality development are important starting points and focal points for implementing the new ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 侯国莲黄婷弓林娟
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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