350MW超临界循环流化床锅炉床温动态仿真研究

Simulation Study on the Bed Temperature Dynamic Characteristics of 350MW CFB Boiler

现代电站,为了进一步提高效率、降低煤耗、减少污染物排放,超临界循环流化床机组技术已经成为火力发电的主要发展方向。而床温是超临界循环流化床机组的主要参数,床温过高过低都会影响机组的安全性和经济性。以某电厂2×350MW超临界循环流化床机组为仿真对象,在仿真支撑平台上,利用模块化建模技术搭建了床温控制相关画面的仿真模型,并联合其它仿真模型进行了调试和试验,在各项扰动的试验基础上对床温的动态特性进行了仿真研究,结果表明所建立的床温控制系统能正确模拟实际机组的床温动态特性,证明了模型的正确性及可用性,可以对电站中的操作技术人员进行岗前培训,对工程技术人员解决实际问题有一定的指导和借鉴作用。

Modern power plant, in order to further improve efficiency, reduce the coal consumption, reducing emissions, supercritical circulating fluidized bed technology has become the main development direction of thermal power unit. And the bed temperature is the main parameters of the supercritical circulating fluidized bed unit, bed temperature is too high too low will affect the safety and economy of the unit. To a certain power plant 2 × 350 mw su- percritical circulating fluidized bed unit as the simulation object, In the simulation support platform, the use of modular modeling technique has set up a simulation model for the bed temperature control related images. And in combination with other simulation model has carried on the debugging and testing, Based on the test of the disturbance of various simulation research was conducted on the dynamic characteristics of bed temperature, Results show that the established bed temperature control system can correctly simulate the actual bed temperature dynamic characteristics of the unit, and prove the correctness and the usability of the model, In a power plant operation technical personnel preservice training, to solve practical problems for engineering and technical personnel has certain guidance and reference.