主汽压系统的综合控制性能评价  

Comprehensive Performance Assessment of Main Steam Pressure Control System

作　　者：刘吉臻[1] 孟庆伟[1] 房方[1] 牛玉广[1] 项丹[1] 杨巍[1] 

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《华东电力》2013年第6期1352-1358,共7页East China Electric Power

基　　金：国家重点基础研究发展计划项目(2012CB215203)~~

摘　　要：在分析了主汽压控制系统评价特点后,选择Harris指标作为稳态段性能评价指标,并给出了基于拉盖尔模型的递归最小二乘估计最小方差算法中时标的选择方法;进而研究了动态段性能评价,提出了求解系统跟踪时刻的计算方法,并以此为分界点将数据分为两部分,分别用于计算系统的确定性性能指标和随机性性能指标。并提出了此情况下控制回路综合性能评价的一般步骤。通过仿真对比分析,验证了本算法的有效性。最后应用于某600 MW火电机组的主汽压控制系统进行了控制性能综合评价。This paper firstly analyzes the assessment features of main steam pressure control system, then the Harris index is chosen for steady state performance assessment, and the option of time scale in the recursive least squares es- timation algorithm of minimum variance based on Laguerre model is proposes for dynamic state performance assess- ment. The tracking time is defined, then the sample data is divided into two parts, used as stochastic performance in- dex and the deterministic performance respectively. In this case the general steps are defined for comprehensive per- formance evaluation of control loops. Through simulation and comparison, the effectiveness of this method is verified. Finally, this method has been applied for the performance assessment of main steam pressure control system in a 600MW thermal power unit.

关 键 词：综合性能评价 时标选择 跟踪时刻 主汽压系统 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]