Study On Rail Transit Stationenvironmental Control Systemcontrolling Technology

Environmental control system is an important part of rail transit system, the energy consumption accounts for about 40%~50% of energy consumption in the entire subway station. Countries in the"Eleventh Five-Year"period, the energy saving as a national policy and put forward specific index requirements. This energy-saving control of environmental control system has also become the current rail transit design and operation process must be taken into account.This paper analyzes the energy consumption of the composition of the rail transit station, as well as the characteristics of environmental control system, through the environmental control system analysis, mathematical models and use simulation and other means to further validate the mathematical model is reasonable.In this paper, according to the characteristics of environmental control system ,we put forward the corresponding control mode. Ventilation Season, the use of CO2 concentration in the control of the station's air supply; Air-conditioning season, the use of temperature control station's air supply, and thus a corresponding change in the frequency converter to achieve subway fan comfort and energy efficiency control.Shanghai Metro Line 4 Pudian station test results show that using frequency conversion control technology with fuzzy control method, has good energy-saving effect, can significantly reduce the energy consumption of the station.Through the study of the paper we once again proved that frequency conversion technology in the environment control system application is feasible. According to the station Pudian the practical effects of point of view, system is running stable, energy-saving results are obvious, with a spread value.