亚临界汽包炉深度调峰安全性评估及控制优化技术

为应对新能源消纳能力提升过程中电力系统调频、调峰的困难，作为常规电源的燃煤机组必须进行深度、快速、频繁的负荷调整，以消除风、光电间歇性和随机性对电网安全运行的影响。以某330 MW亚临界汽包炉机组为例，探索深度变负荷过程中稳定运行的边界条件，评估合理的调峰下限，并通过先进的控制策略优化设计，提升各系统调节品质和可靠性。研究结果表明，该机组在未进行系统及设备改造的基础上能实现27%额定负荷的深度调峰能力。

Safety Evaluation and Control Optimization Technology for in-Depth Peak-Shaving of Subcritical Drum Boiler

In order to address the difficulties of power system frequency regulation and peak shaving stemming from fast-growing new energy absorption capacity, as a type of conventional power sources, coal-fired units have to implement deep, rapid and frequent load adjustment, which is anticipated to reduce or eliminate the impact of intermittency and randomness of wind and photovoltaic power on the security of power grid operations. Taking a 330 MW subcritical drum furnace unit as the study object, this paper explores the boundary conditions and assesses the reasonable lower limit of peak shaving in deep load variation process. Then by virtue of the optimization design of advanced control strategy, the quality and reliability of the control over each system have been improved. The study results show that the unit is capable of performing peak shaving at 27% of rated load without any engagement of system or equipment transformation.