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Parallel operation optimizing control method and system of booster fan

A technology of booster fan and operation control

Active Publication Date: 2012-11-07
BEIJING BOOTES ELECTRIC POWER SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively short time of domestic large-capacity generator sets, the design of parallel operation of desulfurization booster fans has just emerged, and the research results on the optimal control method for parallel operation of desulfurization booster fans in large-scale desulfurization systems have not yet been published.

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  • Parallel operation optimizing control method and system of booster fan
  • Parallel operation optimizing control method and system of booster fan
  • Parallel operation optimizing control method and system of booster fan

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Experimental program
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Embodiment Construction

[0013] The following first analyzes the requirements for correct operation methods and steps in the parallel operation of booster fans and parallel operation.

[0014] Through the analysis of the characteristic curve of the axial flow booster fan and the change of the operating point of the fan during parallel operation and parallel operation, it can be known that the booster fan must follow the correct operation method during parallel operation and parallel operation. . figure 1 It is a schematic diagram of the change of working condition points in the parallel process of two fans, where the abscissa q v / % indicates the opening of the booster fan, the ordinate P is the specific work of the booster fan (that is, the work done by the unit mass of flue gas), the a-b-c-d line is the characteristic curve of the booster fan, and the 0-2 line is the system resistance curve. Depend on figure 1 It can be seen that if the two booster fans are started at the same time and adjusted s...

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Abstract

The invention provides a booster fan parallel operation control method and a system thereof used for controlling the opening degrees of a first booster fan and a second booster fan which operate in parallel. The invention identifies the rationality of the opening degree instruction of the booster fan and ensures that an opening degree executing mechanism of the booster fan executes rational instruction and does not execute irrational instruction. An embodiment of the invention carries out the deviation compensation on the opening degree instruction of the booster fan. The method and the system greatly improve the safety and the reliability of a desulfurization booster fan in parallel operation, reduces the risks of stalling and the over-winding guiding of the fan during the process of parallel operation and improves the operation reliability and the operational percentage of the whole desulfurization system furthermore.

Description

technical field [0001] The present invention relates to an optimal control method and system for parallel operation of supercharging fans. The optimal control method and system can be used especially for parallel operation of supercharging fans in a flue gas desulfurization system, so as to avoid desulfurization of multiple (especially two) The problem of "stall" or "wind grab" occurs during parallel operation and parallel operation of booster fans. Background technique [0002] In my country, as the domestic economy continues to grow at a high speed, electric power construction has also entered an unprecedented period of prosperity, and the single-unit capacity of newly-built units is increasing day by day. At present, among the newly-built units in China, units of 600MW and above have become the mainstream, and the single-unit capacity of some power plants has even reached 1000MW. In order to meet the desulfurization requirements of large flue gas volume, it is the genera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/00
Inventor 刘青波刘炜
Owner BEIJING BOOTES ELECTRIC POWER SCI & TECH