中国电力2017，Vol.50Issue(3)：71-76,6.DOI:10.11930/j.issn.1004-9649.2017.03.071.06
利用一次调频扰动计算火电机组锅炉蓄热系数
Calculation of Boiler Heat Storage Coefficient for Thermal Power Units Based on Primary Frequency Regulation Disturbance
卫丹靖 1田亮 1乔弘 2刘吉臻1
作者信息
- 1. 华北电力大学自动化系,河北保定071003
- 2. 中国能源建设集团广东省电力设计院有限公司,广东广州510000
- 折叠
摘要
Abstract
The heat storage coefficient of the boiler is a key dynamic parameter of the load-pressure controlled object for thermal power units,of which the precise estimation provides important support for optimizing the coordinated control system.According to the simplified nonlinear dynamic model of the load-pressure object,the coordinated control system in the boiler following mode is established to analyze its closed-loop response characteristics using the frequency domain and the time domain methods.The results show that there are big differences in the time and frequency responses of the throttle pressure and the generation load outputs to the governor valve opening and the fuel flow inputs.It can be considered that the throttle pressure and the generation load are only affected by the governor valve opening within a small time scale.Therefore,the data under primary frequency regulation disturbance conditions in a short cycle are used to identify the boiler heat storage coefficient,which accuracy is good as that of the governor valve opening disturbance experiment.In addition,the feasibility of the methods is proved through the data identification and the field experiments in a 330 MW unit.关键词
火电厂/锅炉/锅炉蓄热系数/协调控制/一次调频/对象模型Key words
thermal power plant/boiler/boiler heat storage coefficient/coordinated control/primary frequency regulation/object model分类
信息技术与安全科学引用本文复制引用
卫丹靖,田亮,乔弘,刘吉臻..利用一次调频扰动计算火电机组锅炉蓄热系数[J].中国电力,2017,50(3):71-76,6.
