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Online Performance Monitoring Platform based on the Whole Process Models for Coal-fired Subcritical Power Plants

The whole process of subcritical coal-fired power plant contains the all procrsses varying from coal feeding, air distribution and water feeding to combustion, heat exchanging and steam working,involving the whole energy transformation processes: Chemical Energyarrow1Heat Energyarrow2Mechanical Energyarrow3Electric Power.The whole Process models are very essential for the whole process simulation, key state variables monitoring, operation optimization, performance evaluation and control system optimization. At present, the models found in litterature are mostly aiming at control system design and offline simulation, ignoring some key intermediate variables and the complicated chracteristics of large-scale units.Hence,the online whole process models beed to be developed based on the DCS real-time data,providing a flatform for online monitoring and operation optimization,such as lower heating value identification of the feedcoal, coal feedforward, load scheduling, optimization of cold end system, economical performance evaluation, etc.

User guide of the simulation platform(Subcritical)
code download

Whole Process Simulation of Thermal Power Plants(Ultral-Supercritical)

The whole process of ultral-supercritical power plant contains the all procrsses varying from coal feeding, air distribution and water feeding to combustion, heat exchanging and steam working,involving the whole energy transformation processes: Chemical Energyarrow1Heat Energyarrow2Mechanical Energyarrow3Electric Power.Based on DCS real-time operation data,considering the ultra-supercritical condition,the whole process simulation is carried out,applied for the identification of feedcoal lower heating value, the online calculation of boiler efficiency, the temperature of flue gas at furnace exit and the heat transfer resistence of heat exchangers, and the operation optimization.

User guidance of the simulation platform(ultral-supercritical)
code download

Optimazation Research of the Coordinated Control Strategy for Boiler-Turbine System

The performance of coordinated control system (CCS) is one of the most important factors impacting the efficiency of boiler-turbine unit.Owing to the high nonlinearity, strong intercoupling and various uncertainties, the present coordinated control system could not achieve the expected control performance.So far, the conventional proportional integral derivative (PID) control approach is still adopted for coordinated control system in most of thermal power plants. However,the disadvantages of these approaches are apparent for large-scale units due to the neglect ofthe nonlinearity and intercoupling effects between multiple control loops.To achieve better control performance, various advanced control strategies have been proposed even without perfect models, which provides theory reference for the CCS improvement. But there are still researches need to do with the nonlinear process modeling and robust CCS design. Therefore, we are further studing the modeling of boiler-turbine system and control strategy optimization of the CCS.  

Control-oriented Model of the Coal-fired Boiler-Turbine System and the User Guide
code download

CFD Simulation of Fluid Field and Optimal Design for SCR De-NOx Process in Coal-fired Power Plant

To reduce the Nox concentration in the flue gas released by coal-fired power plant and increase the efficiency of SCR de-nox facility, 3D simulation Model is built based on Gambit software. In addition, the geometry is meshed and pre-processed by Fluent, the CFD software proposed by ANSYS. Numerical simulation is carried out which is focusing on the gas flow characteristics inside the SCR facility. After analyzing the simulation results, optimal strategies are adopted to improve the distributions of gas flow velocity and NH3 concentration. Accordingly, the efficiency of the catalyst used inside the SCR facility is improved and its lifecycle is extended.  

Bioprocess Modeling, control and Optimal Scheduling

Prediction and Scheduling software design of VC fermentaion for Hebei WelCome Company, including:
1、Data Acquition Software,including online collecting data from master controlroom by DDE Program and off-line termly data acquiring;
2、Calculation platform for 2KGA prediction and scheduling,which gives the 4-8 hours predicting values of the 2KGA fermentation production, product concentration and benefit function,and proposes perspective scheduling suggestions;
3、Production Management System of 2KGA fermentation,which shows some intermediate calculation results of scheduling platform and key information of fermention process to the user by the means of GUI,convenient for fermentation data online monitoring for engineers;
4、Web Sever,which provides the calculation results of production, concentration and benefit function for the visitors through local network.

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