Chaos optimization method for on-line coal quality parameter calculation

A technology of chaos optimization and parameters, which is applied in calculation, electrical digital data processing, special data processing applications, etc. It can solve problems such as low calculation accuracy, manual input of test data cannot reflect the operating status of the unit in real time, and low measurement accuracy.

Inactive Publication Date: 2014-04-02
XIAN THERMAL POWER RES INST CO LTD +1
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Problems solved by technology

However, there are radiation sources in real-time measurement, and the measurement accuracy is not high. Manual input of test data cannot reflect the operating status of the unit in real t...

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  • Chaos optimization method for on-line coal quality parameter calculation
  • Chaos optimization method for on-line coal quality parameter calculation
  • Chaos optimization method for on-line coal quality parameter calculation

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with specific examples.

[0039] The invention mainly acquires the operating parameters of the thermal power unit main engine (boiler, steam turbine, generator) and auxiliary equipment such as coal mill and air preheater in real time, and uses the chaos optimization algorithm to calculate in real time the elemental composition and calorific value of the furnace coal.

[0040] The chaos optimization method of online calculation of coal quality parameters of the present invention comprises the following steps:

[0041] 1) Collect the real-time coal feeder M of the thermal power unit m , Primary air flow M at the entrance of the coal mill f , primary air temperature t at the coal mill inlet 1 , The temperature of the air-powder mixture at the outlet of the pulverizer t 2 , coal mill power W, coal mill inlet desiccant specific heat C 1 , Coal mill outlet desiccant specific heat C 2 , cold air specific...

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Abstract

The invention discloses a chaos optimization method for on-line coal quality parameter calculation, which includes the following steps: the real-time parameters of a thermal power unit, such as the coal feed quantity of a coal feeder, the primary wind flow and primary wind temperature of the inlet of a coal pulverizer, the wind-powder mixture temperature of the outlet of the coal pulverizer and the power of the coal pulverizer, are acquired; the parameters of intermediate unknown variables, such as carbon dioxide gas volume, sulfur dioxide gas quantity calculated according to dry basis components and carbon dioxide gas quantity calculated according to dry basis components in exhausted flue gas, are set; a chaos optimization algorithm is adopted to jointly work out the dry ash-free basis component, dry ash-free basis hydrogen component, dry ash-free basis oxygen component, dry ash-free basis nitrogen component and dry ash-free basis sulfur component of coal, as-received basis moisture, as-received basis ash and net calorific value. The method utilizes the real-time soft measurement technology of analyzing as-fired coal elements and net calorific value by using the chaos optimization algorithm to work out the real-time information of coal quality.

Description

【Technical field】 [0001] The invention belongs to the technical field of thermal power generation, and in particular relates to a chaos optimization method for online calculation of coal quality parameters. 【Background technique】 [0002] At present, real-time ray measurement, manual input of test data, and soft measurement using flue gas composition to analyze the elemental composition of coal in power plants are used. However, there are radiation sources in real-time measurement, and the measurement accuracy is not high. Manual input of test data cannot reflect the operating status of the unit in real time, and the base ash received in soft measurement needs to be analyzed by system energy balance, and iterative calculation is used for correction, and the calculation accuracy is not high. high. 【Content of invention】 [0003] The purpose of the present invention is to address the deficiencies in the prior art and provide a chaos optimization method for online calculatio...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 赖菲范奇王智微刘超飞宋兴光陈钢
Owner XIAN THERMAL POWER RES INST CO LTD
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