Research on Energy Efficiency Monitoring of Coal Mine Air Compression Station Based on Gas-electric Dual Meter Method

Aiming at the problems of gas-electric data fragmentation, unloading energy consumption quantification deviation exceeding 3.2% and others caused by gas pressure fluctuation, multi-machine parallel connection, and high-altitude environmental interference in energy efficiency monitoring of coal mine air compression stations, a dynamic monitoring system based on gas-electric dual meter method is proposed. The gas-electric dual meter synchronous acquisition and dynamic correlation analysis technology are adopted to construct a three-layer modular system architecture, pressure transmitter, vortex flow meter, and smart meter are integrated to achieve synchronous acquisition of gas pressure-gas volume-electricity quantity; A gas pressure-temperature joint compensation model is developed and an altitude gradient correction mechanism is introduced to reduce the measurement error of gas volume to 0.8%; A sliding window adaptive filtering algorithm is designed to reduce the standard deviation of pressure fluctuation by 53.1%. In the application of the air compressor station in Guizhou Dafang Coal Industry, the system achieves a unit energy consumption of 0.119 kW·h/Nm³, an energy saving rate of 21.8%, an annual electricity quantity saving of 56 3000 kW·h, and an early warning of 28 days in advance for fouling faults in the cooler of the 3^# air compressor.