中国电机工程学报2024，Vol.44Issue(5)：1872-1880,中插17,10.DOI:10.13334/j.0258-8013.pcsee.223063
适用于一次调频能力在线监测的锅炉蓄热系数计算方法
Identification of Boiler Heat Storage Coefficient for Online Monitoring of Primary Frequency Regulation Capability of Steam Unit
摘要
Abstract
The boiler model has become an essential parameter to evaluate the primary frequency regulation ability(PFR),and it varies with the different load in practical engineering.Based on the IEEE standard model structure,a calculation method of boiler heat storage coefficient suitable for on-line monitoring of PFR capacity is proposed.By establishing the dynamic model of flow and heat transfer,the boiler heat storage coefficient is calculated online according to the valve step simulation.Taking a 1 000 MW supercritical unit as an example,the results show that the heat storage coefficient obtained by this method can describe the dynamic changes of thermal parameters during the process of PFR more accurately.Compared with the IEEE standard model,the integrated power in 60 seconds is reduced by 62.4%using the proposed model.Heat storage coefficient changes with the working conditions.Under low load,the heat storage coefficient is large and the heat storage releases slowly.This method can identify the heat storage coefficient under the current working condition according to the on-site real-time data,and it can be applied to the on-line monitoring of PFR capacity.关键词
一次调频/蓄热系数/锅炉模型/频率仿真分析/流动换热Key words
primary frequency regulation(PFR)/heat storage coefficient/boiler model/frequency simulation analysis/flow and heat transfer分类
信息技术与安全科学引用本文复制引用
郭越,徐飞,陈磊,郝玲,郑旭升,倪平,常东锋,林琳..适用于一次调频能力在线监测的锅炉蓄热系数计算方法[J].中国电机工程学报,2024,44(5):1872-1880,中插17,10.基金项目
国家自然科学基金项目(52276073) （52276073）
华电内蒙古能源有限公司包头发电分公司科技项目(CHDKJ21-02-157). Project Supported by National Natural Science Foundation of China(52276073) （CHDKJ21-02-157）
Science and Technology Project of Huadian Inner Mongolia Energy Co.,LTD.Baotou Power Branch(CHDKJ21-02-157). （CHDKJ21-02-157）
