基于数据统计算法的停磨预判锅炉主控优化方法  

The boiler main control optimization method of stopping grinding prejudgment based on Data statistical algorithm

作　　者：李珂 刘永红 LI Ke;LIU Yonghong(Datang Northwest Electric Power Test&Research Institute,Xi’an 710065,China)

机构地区：[1]大唐西北电力试验研究院,西安710065

出　　处：《自动化与仪器仪表》2022年第2期61-64,共4页Automation & Instrumentation

摘　　要：为解决机组在减负荷、停运磨组过程中由于煤量假性减少导致机组主蒸汽压力反向上升甚至超压等问题,基于数据统计算法的停磨预判锅炉主控优化方法研究运行人员停磨过程及其规律,抽象组态停磨预判锅炉主控前馈,基于大数据采集与分类、数据统计的计算思想研究停磨预判锅炉主控前馈中变时间参数脉冲功能块的最优脉冲时间,结合主蒸汽压力偏差实时、动态调整前馈量值的幅值及回零速率,综合调节减负荷、停磨过程中主蒸汽压力,保障机组运行参数始终保持在模拟量验收规程要求的优良标准范围内。In order to solve the problem that the main steam pressure of the unit rises in reverse or even overpressure due to the pseudo reduction of coal quantity in the process of load reduction and shutdown of mill group, The boiler main control optimization method of stopping grinding prejudgment based on data statistical algorithm studies the stop-grinding process and its laws of operators, and abstracts the boiler main control feed-forward of stop-grinding prejudgment. The optimal pulse time of variable time parameter pulse function block in the boiler main control feed-forward of the boiler was studied based on big data acquisition and classification and data statistics calculation, Combining with the deviation of the main steam pressure, adjusting the amplitude of the feed-forward value and the rate of return to zero in real time and dynamically, combined governing the main steam pressure in the process of load reduction and grinding stop, ensuring that the operating parameters of the unit are always within the fine standard range required by the acceptance procedures of analog quantities.

关 键 词：数据统计 停磨预判 回零速率 变时间脉冲 锅炉主控 主蒸汽压力 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置] TK32[自动化与计算机技术—控制科学与工程]