Load Forecasting Method and Air Conditioning System of Air Conditioning System in Subway Underground Station

Abstract

The invention relates to prediction of air conditioner loads, in particular to a method for predicting loads of an air conditioning system of a subway underground station. The method includes the following operating steps that 1), environmental parameters of the subway underground station are selected and input and subjected to variance analysis, and the parameters affecting the energy consumptionof the air conditioning system are selected with an orthogonal test method and a variance analysis method; 2), the mapping relation between the environmental parameters and the energy consumption ofthe air conditioning system is established according to the input environmental parameters; 3), structural parameters and operating parameters of a neutral network are set, and the neutral network isestablished; 4), the environmental parameters are changed, the loads are predicted through the neutral network, and a prediction result is obtained; and 5), the prediction result is evaluated throughthe ratio of the regression sum of squares to the total sum of squares and the root-mean-square error variable coefficient. By the adoption of the method for predicting the loads of the air conditioning system of the subway underground station, the cold capacity and the air capacity are supplied according to the requirements of the loads of public areas in the station, and therefore energy of theair conditioning system of the station is greatly saved.

Description

technical field [0001] The patent of the present invention relates to the forecasting of air-conditioning load, in particular to the load forecasting method and air-conditioning system of the air-conditioning system of subway underground stations. Background technique [0002] With the continuous development of urban rail transit, the number of subway stations is also increasing. By the end of 2017, 3,234 urban rail transit stations had been put into operation, an increase of 21.1% over the previous year. In the station buildings of urban rail transit system, the energy consumption of ventilation and air conditioning equipment accounts for 65.71%, which is the most important electricity consumer in rail transit. It can be seen that reducing the energy consumption of ventilation and air conditioning systems plays a vital role in the energy saving of urban rail transit system station buildings. The energy consumption of ventilation and air-conditioning systems in public area...

AI Technical Summary

Problems solved by technology

[0008] The air volume and cooling capacity required in the public area of ​​the station are determined by the cooling load in the station. The cooling load is the coupling output under the influence of various factors such as outdoor temperature and humidity, passenger flow, and equipment power consumption. The air conditioning system is adjusted according to a single factor. accurate question

In addition, feedback control has hysteresis, and the current control method cannot solve the volume hysteresis phenomenon of the subway air-conditioning and ventilation system well.

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