Thermal power generating unit mechanical furnace coordination control method based on improved T-S fuzzy prediction modeling

Abstract

The invention discloses a thermal power generating unit mechanical furnace coordination control method based on improved T-S fuzzy prediction modeling. The method comprises utilizing a fuzzy clustering method to determine the optimal number of clusters; identifying the parameters of a T-S fuzzy model based on a least square method; and finally designing a multi-step prediction controller. The thermal power generating unit mechanical furnace coordination control method can guarantee good adjusting quality and higher robustness within the whole working condition range when making a mechanical furnace coordination control system to adjust the load in the large range of the thermal power generating unit, thus being significant in improving the operation performance of a power generation system. The prediction algorithm can realize organic fusion of T-S fuzzy modeling and multi-step prediction control, and can realize prediction control of the mechanical furnace coordination system, and is advantaged in algorithm and high in the prediction precision.

Description

technical field [0001] The invention relates to the field of thermal power unit furnace coordination control, in particular to a thermal power unit furnace coordination control method based on improved T-S fuzzy prediction modeling. Background technique [0002] With the continuous expansion of the capacity of the power grid and unit units, the scale and complexity of the modern power system are increasing significantly. The integrated automation of the power grid requires more and more units to realize automatic generation control (AGC). Requirements, power plant automation level and control performance quality are becoming more and more important. [0003] Boiler-steam turbine (engine furnace) is the main equipment in the thermal power generation unit, and it is of great value to improve the operation performance of the power generation system through its control. Most of the existing machine-furnace coordinated control systems use a single-input and single-output PID con...

AI Technical Summary

Problems solved by technology

However, at present, many large and medium-sized thermal power units need to adjust the load in a wide range according to the requirements of the power grid, so that the operation of the units seriously deviates from the design conditions, and the dynamic characteristics of the furnace objects change greatly

The conventional PID design based on the classic single-input single-output strategy cannot provide good performance in a large range of operating conditions

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