火电机组快速甩负荷过程除氧器动态特性研究
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摘要
针对火电机组快速甩负荷(Fast Cut Back,FCB)过程中除氧器的动态特性变化,建立了除氧器分段模型,以反映除氧器内部结构及工作过程.基于该分段模型对某600 MW机组FCB过程除氧器水位进行仿真研究并提出了相应的控制策略.结果表明:该策略保证了快速甩负荷过程中除氧器水位在机组可承受合理范围变化,有助于电网和电厂的安全运行.
In order to study the change of deaerator dynamic characteristics in process of Fast Cut Back of thermal power generating unit,the paper has built a sectional model to reflect the internal structure and working process of the deaerater.Based on the said segmentation model,we conduct simulation research for deaerator water level of one 600 MW unit FCB process,and present the corresponding control strategy.The results show: the said strategy ensures deaerator water level change within the reasonable scope that it can afford,in the process of the Fast Cut Back.And it helps to the safe operation of power grid and power station.
In order to study the change of deaerator dynamic characteristics in process of Fast Cut Back of thermal power generating unit,the paper has built a sectional model to reflect the internal structure and working process of the deaerater.Based on the said segmentation model,we conduct simulation research for deaerator water level of one 600 MW unit FCB process,and present the corresponding control strategy.The results show: the said strategy ensures deaerator water level change within the reasonable scope that it can afford,in the process of the Fast Cut Back.And it helps to the safe operation of power grid and power station.
引文
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[10]李力.除氧器液位控制策略技术研究[J].华电技术,2016,38(3):10-13.
[2]邓彤天,王迪,周云龙.火电机组FCB关键控制技术综述[J].电站系统工程,2014,30(5):69-72.
[3]周云龙,王迪,陈立军.100%负荷下FCB初期主蒸汽压力变化特性仿真[J].热力发电,2014,43(11):69-73.
[4]廖诗武,曾凯文,姚伟,等.火电快速甩负荷机组动态仿真建模[J].电工技术学报,2017,(4):212-220.
[5]郎坤.汽轮机系统FCB过程机理建模及控制策略研究[D].吉林:东北电力大学,2016.
[6]蔡文刚,蔡锡.火电厂除氧器[M].北京:中国电力出版社,2007:31-35.
[7]邓少翔,霍敏,胡念苏.1000MW机组快速甩负荷工况下除氧器水位仿真及预测[J].热力发电,2015,44(2):101-105.
[8]刘佳青,刘潇清.基于系统动力学的电厂除氧器建模与仿真[J].山东电力技术,2011,11(1):69-72.
[9]傅喻帅.火电机组快速切负荷过程给水控制策略与应用[J].广东电力,2013,26(3):96-98.
[10]李力.除氧器液位控制策略技术研究[J].华电技术,2016,38(3):10-13.