A Dynamic Programming Method for Ice Storage Air Conditioning System

Abstract

The invention discloses a dynamic planning method for an ice storage air-conditioning system, which includes the following steps: Step 1, calculating the unit cooling capacity cost of the refrigeration main unit in each period starting from the current moment; Time period, represented by k, the average ambient temperature T of N periods starting from the current moment output by the average ambient temperature prediction algorithm k [N] as the basis, obtain the full load energy efficiency COP of the refrigerator for N periods starting from the current moment k [N], to get the unit cooling cost P(Q r ) k [N]; Step 2, according to the unit cooling cost of the refrigerator P(Q r ) k [N], calculate the stored cooling capacity allocated at the current moment; step 3, the cooling capacity Q of the ice tank at the current moment k according to the judgment in step 2 1k To determine the working mode of the ice storage air conditioning system at the current moment. Establish a more accurate dynamic prediction system, which can effectively and reasonably allocate the storage cooling capacity and automatically adjust the working mode.

Description

technical field [0001] The invention relates to the technical field of ice storage systems, in particular to a dynamic programming method for ice storage air conditioning systems. Background technique [0002] In recent years, the more and more serious power shortage and energy shortage have become a major bottleneck hindering economic development. With the increasing awareness of the energy crisis in the whole society, the state clearly puts energy conservation and efficiency improvement at the top of the energy work. Recently, the Chinese government has requested to effectively strengthen resource conservation and build a conservation-oriented society. Therefore, all walks of life must make full use of existing power resources while saving electricity. At present, there are two characteristics of tight power supply: one is the low load rate of the power grid, and the peak-to-valley difference of the system increases; the other is that with the change of the power structure...

AI Technical Summary

Problems solved by technology

The control of ice storage system is a comprehensive problem involving multiple disciplines, and due to the uncertainty of the actual air conditioning load, it brings certain difficulties to the design of the control strategy

Compared with the efficient operation of the storage cooling capacity and the efficient operation of the refrigeration host, the storage cooling capacity distribution is more important for reducing the operating cost of the air conditioning system. In the patent application number: 201710664807.9 "A Configuration Method for Economical Operation of Energy Storage Ice Storage System in Microgrid" Solved the relevant constraint conditions based on the characteristics of the ice storage device and energy storage device, and obtained the load distribution and optimal control strategy of each type of power consumption in the microgrid, but it did not make a deeper analysis of the distribution of stored cooling capacity. judgment, and rely too much on the price of electricity, without considering the change of ambient temperature during the working process

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