A collaborative control system for multiple refrigeration units in an energy station

Abstract

The invention discloses a cooperative control system for multiple refrigerating units in an energy station, including an energy station and an industrial park workshop. The energy station is equipped with n sets of refrigerating machines; The pipes are connected to the cooling system, and the outlet of the cooling system is connected to the refrigerator through the return water pipe; the return water pipe is equipped with a return water temperature sensor, the industrial park workshop is equipped with a park temperature sensor, and the refrigerators are equipped with split range controllers. The controller is connected to the temperature controller of the workshop in the park. The temperature controller of the workshop in the park is connected to the return water temperature sensor to obtain the measured value of the return water temperature. The temperature controller of the workshop in the park is connected to the temperature sensor in the park to obtain the measured value of the workshop temperature. The controller controls the operation of the freezer. The invention takes the temperature value of the workshop in the park as its main control variable, and the return water temperature of the refrigerating unit as a secondary control variable, so as to reduce the influence of multiple factors on the temperature of the cold source in the workshop in the park.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to a cooperative control system for multiple refrigeration units in an energy station. Background technique [0002] Multi-energy stations are generally composed of power distribution, natural gas boilers, refrigerators, photovoltaics, and energy storage equipment. Refrigerators are one of the important components of energy stations and are used to provide cold sources for industrial parks, including cold air and cooling water. Wait. [0003] The defect of the prior art is that the existing method generally controls the start and stop of multiple refrigerating units through the return water temperature of the refrigerating units. When the return water temperature is too high, start multiple refrigerating units at the same time, and when the return water temperature is low, start a certain refrigerating unit. Therefore, the existing control methods have the followin...

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Problems solved by technology

[0004] When the return water temperature reaches the refrigeration unit from the workshop of the park factory through the long-distance pipeline, there is a large delay, and the long-distance pipeline will also reduce (winter) or increase (summer) the return water temperature, which will cause additional temperature changes. Based on this, the temperature adjustment of the refrigeration unit cannot compensate the influence of external factors on the temperature of the workshop in the park, and the adjustment time is too long

[0005] Multiple refrigeration units start according to the deviation range of the return water temperature, and there are over-regulation and under-regulation. Over-regulation will directly lead to energy loss, and under-regulation will lead to a decline in cooling quality

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