|本期目录/Table of Contents|

[1]曲广浩,曹鹏飞,汪 峰,等.基于特征区间自动搜索的主蒸汽调节阀流量特性建模算法研究[J].工业仪表与自动化装置,2019,(05 总269):11-15.[doi:1000-0682(2019)05-0000-00]
 QU Guanghao,CAO Pengfei,WANG Feng,et al.Research on modeling algorithm of flow characteristics of main steam regulating valve based on automatic search of characteristic interval[J].Industrial Instrumentation & Automation,2019,(05 总269):11-15.[doi:1000-0682(2019)05-0000-00]
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基于特征区间自动搜索的主蒸汽调节阀流量特性建模算法研究

《工业仪表与自动化装置》[ISSN:1000-0682/CN:61-1121/TH]

卷:
期数:
2019年05期 总第269期
页码:
11-15
栏目:
出版日期:
2019-10-15

文章信息/Info

Title:
Research on modeling algorithm of flow characteristics of main steam regulating valve based on automatic search of characteristic interval
作者:
曲广浩1曹鹏飞2汪 峰1王爱成1王 振2
1.华能国际电力股份有限公司德州电厂,山东 德州 253024;
2.山东科技大学 电气与自动化工程学院,山东 青岛 266590
Author(s):
QU Guanghao1 CAO Pengfei2 WANG Feng1 WANG Aicheng1 WANG Zhen2
(1. Huaneng Power International INC, Dezhou Power Plant, Shandong Dezhou 253024, China;
2. College of Electrical Engineering and Automation,Shandong University of Science and Technology,Shandong Qingdao 266590,China)
关键词:
关键词:主蒸汽调节阀流量特性分段线性模型区间自动搜索最小二乘算法
Keywords:
Keywords:main steam regulating valve flow characteristic piecewise model interval automatic searching least square algorithm
分类号:
TM712
DOI:
1000-0682(2019)05-0000-00
文献标志码:
A
摘要:
在火力发电机组中,实发功率的变化通常是通过调节主蒸汽调节阀的开度来改变主蒸汽流量实现的。然而,主蒸汽调节阀往往存在非线性特性,对功率控制回路的性能产生不利影响。该文提出建立主蒸汽调节阀的特性模型,有利于获得阀门真实特性,以及方便为功率控制过程提供逆补偿。在顺阀和单阀方式下对阀门进行实验,提出自动搜索方法对样本数据进行线性区间划分,基于每个区间数据建立线性模型,采用最小二乘算法辨识模型参数,并为下一步迭代更新线性区间提供指导,线性区间和模型辨识交替进行直到达到模型拟合要求。实例分析表明,该方法能够准确地估计阀门流量特性,具有较强实用性。
Abstract:
For thermal power generating units, it is generally to regulate the opening degree of the main steam regulating valves to change the actual power.However,there always exist obvious nonlinear characteristics for the valves,which has adverse effect on the control performance.It is necessary to build the model of the characteristics of the main steam valves, which is conducive to obtain the real characteristics and offer the inverse compensation for the power control.The experiments are conducted in pattern of sequence valve and single valve.An automatic searching method is proposed to divide numbers of linear intervals for the samples.One linear model is built for each linear interval,and the least square algorithm is used for identifying the model parameters.The intervals are iteratively updated with the new model parameters till the fitting precision of the models.The industrial case confirms that the proposed modeling method could estimate the characteristics of the main steam regulating valve accurately and is feasible for practical use.

参考文献/References:

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相似文献/References:

[1]孙德利,尚学辉,王长河.调节阀开度验算计算方法的确定[J].工业仪表与自动化装置,2015,(04 总244):98.
 SUN Deli,SHANG Xuehui,WANG Changhe.The determination of calculation method for the opening of the regulating valve calculation Checking method of the opening of valve[J].Industrial Instrumentation & Automation,2015,(05 总269):98.

备注/Memo

备注/Memo:
收稿日期:2019-01-11
基金项目:国家自然科学基金重点项目“面向工业大系统安全高效运行的报警设计与消除方法及应用”(02030094201);
华能集团科技项目资助
作者简介:曲广浩(1971),男,本科,研究方向为火力发电过程监控,
更新日期/Last Update: 1900-01-01