Obtaining method of static control strategy for chiller based on time-series distribution of air-conditioning load

Abstract

The invention discloses a static control strategy acquisition method for chillers based on the time series distribution of air-conditioning loads. Data and thermodynamic characteristics obtain the T-load rate data group associated with time and load rate; step B: decision tree generation, take a plurality of state points in the whole time period, distribute nodes on each described state point; step C: Decision tree selection, through the operation data and the T-load rate data set, calculate the power consumption of each parent node and the superposition value of each child node power consumption directly generated by the parent node; compare For the superposition value corresponding to each parent node, keep the parent node with the lowest superposition value and the child nodes generated by it, and discard the rest; the optimal control strategy can be obtained without calculating the results of all possible control strategies. The factors are comprehensive, avoiding excessive calculation, and the result generation speed is fast.

Description

technical field [0001] The invention relates to the control field of chillers, in particular to a method for obtaining static control strategies of chillers based on time-series distribution of air-conditioning loads Background technique [0002] With the rapid development of the current social economy and the continuous improvement of people's requirements for the comfort of the living environment, air conditioning systems have become an indispensable part of human daily life and industrial production processes. According to statistics, after entering the 21st century, the proportion of building power consumption in the total power consumption of the country is getting higher and higher, and it has reached more than 25% at present, of which, the power consumption of chillers accounts for more than 60%, while the power consumption in the load distribution is relatively high. In high summer, the power consumption of the air conditioner can even take up to 1 / 3[1]. Therefore, ...

AI Technical Summary

Problems solved by technology

However, in the actual operation process, this control strategy does not take into account that the frequent switching on and off of the operating mode will generate a strong inrush current to the circuit, and the existence of the inrush current will increase the power consumption of the entire chiller system, resulting in actual The total power consumption increases, and the ideal effect cannot be fully achieved; and if there are a large number of chillers, all possible control strategies need to be listed, and then compared based on all final results, this method makes the calculation amount Reaching a very large number leads to slow calculations, making instant control difficult, and thus somewhat limiting

Images