Research and Application on Intelligent Control of Boiler Primary Air Wide Load and Coupling Technology of Air Duct Flow Field Optimization
In order to improve the flexibility and efficiency of power plant boilers under the conditions of deep peak shaving and frequency regulation of the power grid and variable coal type operation,an optimization scheme for the intelligent control system of the primary air wide load was proposed through in-depth analysis of two 660 MW supercritical boilers and powder production systems in Chongqing Power Plant.The plan includes optimizing the variable load rate and feedforward coefficient to improve the boiler's response to AGC mode load changes.Introducing a variable load command feedforward dynamic feedforward loop to improve the adaptability of the fuel control system to load changes.Add a load command change signal in a wind pressure control circuit to improve the response rate during the initial stage of load command changes.At the same time,in response to the flow field problems in the powder production system,an air duct flow field equalization device was designed and installed,effectively improving the measurement accuracy of primary air flow.The results show that the optimization scheme can meet the requirements of deep peak shaving and frequency regulation of the unit,and adapt to the operating conditions of variable coal types,improving the economy and stability of boiler operation.
coal-fired boilercoal millprimary air volumeair volume measurement
万方数据
维普
