| Abstract |
Thermal power plants, as significant water consumers, have extremely high requirements for water supply quality and equipment stability. Traditional water supply systems, often relying on manual adjustment or relay control, suffer from low automation levels, high energy consumption, and unstable water supply quality, making it difficult to meet the demands of modern thermal power plants. To address these challenges, this study first conducts a needs analysis to investigate the current status and existing problems of the water supply system in thermal power plants. It identifies the parameters that need to be monitored and regulated, such as water supply pressure, flow rate, and water quality. Subsequently, a system architecture design is carried out, outlining the overall structure of the system and defining requirements for automation, reliability, and scalability. Control programs are developed using PLC programming software, including main programs and subroutines, to achieve functions such as data acquisition, processing, logical judgment, and control output. The hardware devices and software programs are then integrated and subjected to system commissioning. Functional and performance tests are conducted to ensure stable system operation. Based on the test results, the system is optimized and adjusted to enhance its performance and reliability.
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