供热机组利用热网蓄热提高变负荷运行速率的研究  

Study on the Increase of Variable Load Operation Rate for Heating Units with Heat Storage in Heat Supply Networks

作　　者：李全全 李扬 贾海军 LI Quanquan;LI Yang;JIA Haijun(Inner Mongolia Jingning Thermal Power Co.,Ltd.,Ulanqab,Inner Mongolia 012000,China)

机构地区：[1]内蒙古京宁热电有限责任公司,内蒙古乌兰察布012000

出　　处：《山西电力》2022年第2期46-49,共4页Shanxi Electric Power

摘　　要：为了接纳风电等新能源的大规模并网,电网对供热机组的变负荷运行速率提出了更高的要求。通过对供热热网的蓄热能力进行计算,发现热网蓄热远远大于锅炉蓄热,利用其可以显著提高机组的负荷响应能力。以典型350 MW超临界供热机组为例,对自动增益控制指令进行多尺度非线性分解,利用其高频分量对连通管压力调节阀、抽汽压力调节阀开度进行补偿,可使主汽压力的控制品质和机组的变负荷运行速率都得到显著提升。In order to accommodate the large-scale integration of new energy resources such as wind power,the power grid has put forward higher requirements for the variable load operation rate of heating units.Based on a calculation of the heat storage capacity of the heat supply networks,it is found that this heat storage capacity is much larger than the heat storage in the boiler,and the load response capacity of the units can be significantly improved with it.Taking typical 350 MW supercritical heating units as an example,multi-scale non-linear decomposition of AGC(Automatic Generation Control)instruction is performed,and its high-frequency components are used to compensate the opening of the pressure regulating valve of the connecting pipe and the exhaust steam pressure regulating valve,which can significantly improve the control quality of the main steam pressure and the rate of variable load operation of the units.

关 键 词：供热机组 热网蓄热 多尺度分解 协调控制 

分 类 号：TP272[自动化与计算机技术—检测技术与自动化装置] TK323[自动化与计算机技术—控制科学与工程]