燃煤发热量软测量技术及其在超临界机组控制系统中的应用  

Soft Measurement Technology of Coal-fired Heat and Its Application on Supercritical Generating Unit Control System

作　　者：韩忠旭[1] 周传心[2] 李丹[1] 张伟 马焕军 张传江[2] 

机构地区：[1]中国电力科学研究院电站技术研究所,北京市海淀区100192 [2]北京国电智深控制技术有限公司,北京市海淀区100192 [3]国电黄金埠发电有限公司,江西省余干县335101

出　　处：《中国电机工程学报》2008年第35期90-95,共6页Proceedings of the CSEE

基　　金：中国电力科学研究院科技创新基金(ZDKJB200712)

摘　　要：采用非线性观测器的方法,通过对"广义热值"观测器的数学分析,探索燃煤发热量的软测量技术。在一台660MW超临界机组以12MW/min的变动速率、分5次将负荷从525MW降至245MW、机前压力从24.2MPa滑变到12MPa的工况下,取得了将有功功率偏差控制在5MW以内的效果,实践证明该超临界机组在协调控制系统中融入热值观测器有很好的鲁棒性,表明其能够快速响应自动发电控制(automatic generation control,AGC)大幅度变负荷的要求。Nonlinear observer is adopted to explore soft measurement technology of coal calorific value through mathematical analysis on the ＂generalized heat value＂ observer. This heat value observer has greater stability robustness and can be integrated into coordinated control system （CCS）. In condition that a 660 MW supercritical generating unit with rate of 12 MW/min decreasing load from 525 MW to 245 MW in 5 times and the pressure sliding from 24.2MPa to 12MPa, the error of active power is within 5 MW. It has been testified that the stability robustness is strongly when the heat value observer integrated into the CCS of generating unit and it can respond to the requirement of automatic generation control （AGC） load changing in large bound quickly.

关 键 词：超临界 直流炉 软测量 煤质分析 热值观测器 

分 类 号：TK39[动力工程及工程热物理—热能工程]