KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/123456789/1

Browse

Settings

Has files: NoSubject: search.filters.subject.Combined cycle cower plant (CCPP)

Search Results

Now showing 1 - 2 of 2
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Optimization Based Dynamics Setpoint Control to Improve Cycle Power Efficiency of The Lm6000pf+ Aero Gas Turbine
    (2021-01-01)
    Kongratana, Viriya
    ;
    Tawangkan, Wissanudech
    ;
    Wongvanich, Napasool
    The efficiency of the Aero Gas Turbine in a combine cycle power plant (CCPP) is maximum under the conditions that the combustion chamber temperature is highest, the compressor is working at full capacity and all bleed valves are closed. The Inlet Air Heating System is therefore used to improve the efficiency of the machines in low power generation conditions. To ensure stability in response to air temperature and machine capacity changes, this work thus proposes an optimization-based automation system designed to stabilize the CCPP. Results show that under changing conditions, the overall efficiency of the air compressors in low load conditions increases by 3%, shortening the system start time of 15 minutes and improving the efficiency of the combined cycle power plant by an average of 100 BTU / kw.hr. The average fuel cost is reduced by approximately 600,000 baht per month.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Optimization-based PID Controller Design with Gain Scheduling for the Drum Boiler Level Control of the Industrial Combine Cycle Plant
    (2021-01-01)
    Kongratana, Viriya
    ;
    Suthat, Badin
    ;
    Wongvanich, Napasool
    This work aims to present an application of water level control system for a three-element cascade drum boiler with a PID controller. The PID control value was divided into two control ranges, including peak mode operation during high power consumption and off-peak mode operation during low power consumption for a combined cycle power plant. The feedforward part was the flow rate, while the feedback part was the water level in the drum boiler. Such variables consisted of steam output flow rate, feed water flow rate and water level in the drum boiler. The optimization method was applied for calculating the parameters of the water level controller in the drum boiler. As a result, it was found that the PID controller with divided control phases was able to clearly control the water level of the drum boiler better than a single PID controller. It was able to handle transient and rapid processes very well. For example, shrink and swell effects of water in a drum boiler caused by the fluctuation of the pressure inside the boiler. This method could be used practically for controlling the water level in power plant drum boilers.