A recognition method for critical blockage state of medium speed mills

WANG Tong; TIAN Liang

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A recognition method for critical blockage state of medium speed mills

Thermal Power Generation Issue 12, (2016)

更新时间：2025-09-28

- A recognition method for critical blockage state of medium speed mills
- 作者机构：
  
  华北电力大学控制与计算机工程学院,河北,保定,071000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP273;TK223.25
- Published Online：27 December 2016，
  
  Published：2016
- 稿件说明：
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WANG Tong, TIAN Liang. A recognition method for critical blockage state of medium speed mills[J]. Thermal Power Generation, 2016, (12).
DOI：

WANG Tong, TIAN Liang. A recognition method for critical blockage state of medium speed mills[J]. Thermal Power Generation, 2016, (12). DOI：

摘要

配煤是当前火电厂提高经济效益的主要手段。但劣质煤存在可磨性差

发热量低

相同负荷下给煤量大

易造成磨煤机堵塞等缺陷。工程中发现

磨煤机从正常工作到堵塞要经历一个“临界堵塞”状态的过渡过程，准确判断磨煤机临界堵塞

对机组安全稳定运行意义重大。本文研究一种小波多尺度分解与DS证据理论相结合的目标模式识别方法

通过机理分析确定原始证据信号；再利用多尺度分解的方法提取证据的特征并将证据在时间域内对齐

进一步通过典型样本构造隶属度函数

获得各证据的信度函数分配；最后运用DS证据理论得出识别结论。磨煤机实际运行结果表明

该方法有效。

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