Obtaining method of water chilling unit static control strategy based on air conditioning load time series distribution

Abstract

The invention discloses an obtaining method of a water chilling unit static control strategy based on air conditioning load time series distribution. The obtaining method comprises the following stepsthat step A, data are acquired, specifically, operation data of a water chilling unit are acquired, a plurality of time points in a whole time period are taken, and a T-load rate data set of which time is associated with the load rate is obtained according to the operation data and thermodynamic property of the water chilling unit; step B, a decision tree is generated, a plurality of state pointsin the whole time period are taken, and nodes are distributed on the state points; and step C, branch selection of the decision tree is carried out, through the operation data and the T-load rate data set, superposition values of power consumption of father nodes and power consumption of child nodes directly generated by the father nodes is calculated, the superposition values corresponding to the father nodes are compared, the father node with the lowest superposition value and the child node generated by the father node are preserved, and the rest of the father nodes and the child nodes arediscarded. An optimal control strategy can be obtained without calculating results of all possible control strategies, the factors considered are comprehensive, an excessive calculation amount is avoided, and the result generation speed is high.

Description

Technical field [0001] The invention relates to the field of control of water chillers, in particular to a method for obtaining a static control strategy of a water chiller based on air conditioning load timing distribution 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, the air conditioning system has become an indispensable part of human daily life and industrial production. According to statistics, after entering the 21st century, building power consumption accounts for an increasing proportion of the country’s total power consumption. It has now reached more than 25%. Among them, the power consumption of chillers accounts for more than 60%, and the load distribution is relatively high. In the high summer, the power consumption of the air conditioner can even occupy 1 / 3 [1]. Therefore, the optimization and energy saving of chillers is a key...

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

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