การเพิ่มประสิทธิภาพในการผลิตไฟฟ้าของโรงไฟฟ้าชีวมวลด้วยเทคนิคการควบคุมและติดตามแบบอัตโนมัติ

Abstract

The objectives of this study were to design, develop a program to control, automatically track progress, and increase the overall efficiency of the power plant. It was found that the past efficiency analysis of power plants such as boiler efficiency, total plant efficiency, and OEE. Gross heat rate was not in accordance with criteria. Data of generating power were stored in the distributed control system, DCS. After that, the staff got the data for analysis. It took too much time to get data to improve production process, and the loss of proficiency occurred. This thesis has developed the processing program with automatic control and tracking by installing OPC server software to act as a medium to carry the data and connect OPC client via Matrikon OPC Explorer and MATLAB 2020b programs. The outcome of this program is that it was able to calculate and process power plant efficiency instantaneously such as the efficiency of boiler, of steam turbine, of total power plant, and of overall machinery efficiency, and net heat rate ratio for electricity generation. Moreover, this program also increases the power plant efficiency as follows: 1) boiler efficiency rose up to 4.48% 2). Total plant efficiency was up to 2.16%. Also, gross heat rate which was used to generate power continually decreased to 1,718.36 kJ/kWh. The increase of efficiency and decrease of gross heat rate led to the control of biomass efficiency, the time-saving work for the staff responsible for efficiency analysis and the decreasing costs of power generation.