The control strategy of cold storage and energy savingin subway tunnel is realized by piston wind.

There are over 300 urban rail transit lines in China, with a total operating mileage of 9862 kilometers and a heavy burden of energy consumption costs. Energy conservation and consumption reduction have become the mainstream trend in subway operation. Traditional subway lines only focus on energy:saving control of air conditioning systems in station areas, and are often constrained by vehicle traction and braking conditions, adopting laissez faire measures for temperature control in tunnel environments. To solve this problem, the comparison of data from on:site investigations of multiple subway lines clarified the differences between the environmental conditions of subway tunnels using the new train traction system with energy feedback braking regeneration inverter recovery technology and traditional tunnels. The basic conditions for reducing the energy consumption of train and station air conditioning by controlling piston air to achieve staged cold storage are met. Through in:depth analysis of the energy:saving issues of tunnel piston wind, corresponding control model countermeasures were proposed for different scenarios. Verify the comparison of traction energy consumption under different models through on:site subway testing, and achieve effective reduction of environmental control energy consumption during subway operation.