CN117477756A

CN117477756A - Cold station system, power supply method for cold station system, and storage medium

Info

Publication number: CN117477756A
Application number: CN202311406691.0A
Authority: CN
Inventors: 杨言鼎; 李宏波; 陈倍颖; 张永威; 田彪
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2023-10-26
Filing date: 2023-10-26
Publication date: 2024-01-30

Abstract

The embodiment of the application relates to a cold station system, a power supply method of the cold station system and a storage medium, wherein the cold station system comprises: photovoltaic power module, refrigeration host computer, commercial power module, control module, wherein: the refrigerating host is respectively connected with the photovoltaic power module, the mains supply module and the control module; the mains supply module is used for providing a mains supply for the refrigeration host; the photovoltaic power module is used for providing a photovoltaic power supply for the refrigerating host; the control module is used for determining a power supply mode of the refrigeration host based on the commercial power consumed by the refrigeration host and the photovoltaic power consumed by the refrigeration host, and controlling the power supply of the refrigeration host according to the power supply mode. Therefore, the power supply can be combined with the mains supply and the photovoltaic power supply to supply power to the refrigeration host in the cold station system, and the power supply mode of the refrigeration host can be determined based on the mains supply consumed by the refrigeration host and the photovoltaic power consumed by the refrigeration host, and the power supply of the refrigeration host is controlled according to the power supply mode, so that the running cost of the cold station system can be reduced.

Description

Cold station system, power supply method for cold station system, and storage medium

Technical Field

The present disclosure relates to the field of refrigeration technologies, and in particular, to a cold station system, a power supply method of the cold station system, and a storage medium.

Background

The cold station system can be said to be a control system, and in general, the cold station system is a short term for a cold station group control system. Forms of cold station systems include, for example, cold-concentrated cold stations and other cold station forms. The cold station system is generally used in a machine room to supply cold or heat to the machine room. Such as some large malls, office buildings, factories, data centers, etc., require a large amount of cooling.

In the related art, electric energy is generally provided for a refrigeration host in a cold station system through power supply sources such as commercial power, a diesel generator and the like. Under the condition of power failure of the commercial power, the diesel generator needs to be started and operated so as to supply power to the refrigeration host.

However, the above-described cold station system is relatively costly to operate.

Disclosure of Invention

In view of the above, in order to solve some or all of the above technical problems, embodiments of the present application provide a cold station system, a power supply method of the cold station system, and a storage medium.

In a first aspect, embodiments of the present application provide a cold station system, the cold station system comprising: photovoltaic power module, refrigeration host computer, commercial power module, control module, wherein:

the refrigerating host is respectively connected with the photovoltaic power supply module, the mains supply module and the control module;

the mains supply module is used for providing a mains supply for the refrigeration host;

the photovoltaic power module is used for providing a photovoltaic power supply for the refrigerating host;

the control module is used for determining a power supply mode of the refrigeration host based on the commercial power consumed by the refrigeration host and the photovoltaic power consumed by the refrigeration host, and controlling the power supply of the refrigeration host according to the power supply mode.

In one possible embodiment, the cold station system further comprises a temperature and humidity sensor;

the temperature and humidity sensor is connected with the control module;

the control module is also used for determining power utilization trend information of the cold station system based on the temperature and humidity information acquired by the temperature and humidity sensor.

In one possible embodiment, the control module is further configured to determine a remaining usage period of a backup power source of the cold station system based on the electricity usage trend information, wherein the backup power source includes the photovoltaic power source.

In one possible embodiment, the cold station system further comprises an energy storage module;

the energy storage module is connected with the control module;

the control module is also used for determining whether to control the energy storage module to store energy or not based on the electricity consumption trend information and the current electricity price information.

In one possible embodiment, the energy storage module comprises at least one of:

an energy storage converter group and an uninterruptible power supply.

In one possible embodiment, the photovoltaic power module includes a photovoltaic panel group, a junction unit, and a boost unit;

the converging unit is respectively connected with the photovoltaic panel group and the boosting unit;

the converging unit is used for converging and inputting the electric energy converted by the photovoltaic panel group to the boosting unit;

the boosting unit is used for boosting the direct current provided by the converging unit based on the target voltage of the direct current bus of the refrigeration host, and connecting the boosted direct current to the position of the direct current bus of the refrigeration host.

In one possible embodiment, the mains power module is for connection with a first mains power and a second mains power, the mains power module comprising a first circuit breaker, a second circuit breaker and a change-over switch;

the first circuit breaker is used for controlling whether the mains supply module provides mains supply through the first mains supply;

the second circuit breaker is used for controlling whether the mains supply module provides mains supply through the second mains supply;

in the case that the cooling host supplies the commercial power via the commercial power module, the change-over switch supplies the commercial power to the cooling host by switching the first commercial power or the second commercial power.

In one possible embodiment, the cooling host is a photovoltaic air conditioner.

In a second aspect, an embodiment of the present application provides a power supply method of a cold station system, where the cold station system is the cold station system described in the first aspect, and the method is applied to a control module included in the cold station system, and the method includes:

and determining a power supply mode of the refrigeration host based on the commercial power consumed by the refrigeration host and the photovoltaic power consumed by the refrigeration host, and controlling the power supply of the refrigeration host according to the power supply mode.

In a third aspect, embodiments of the present application provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method as in any of the embodiments of the power supply method of the cold station system of the second aspect described above.

The cold station system provided by the embodiment of the application comprises: photovoltaic power module, refrigeration host computer, commercial power module, control module, wherein: the refrigerating host is respectively connected with the photovoltaic power supply module, the mains supply module and the control module; the mains supply module is used for providing a mains supply for the refrigeration host; the photovoltaic power module is used for providing a photovoltaic power supply for the refrigerating host; the control module is used for determining a power supply mode of the refrigeration host based on the commercial power consumed by the refrigeration host and the photovoltaic power consumed by the refrigeration host, and controlling the power supply of the refrigeration host according to the power supply mode. Therefore, the power supply can be combined with the mains supply and the photovoltaic power supply to supply power to the refrigeration host in the cold station system, and the power supply mode of the refrigeration host can be determined based on the mains supply consumed by the refrigeration host and the photovoltaic power consumed by the refrigeration host, and the power supply of the refrigeration host is controlled according to the power supply mode, so that the running cost of the cold station system can be reduced.

In the power supply method of the cold station system provided by the embodiment of the application, the cold station system includes: photovoltaic power module, refrigeration host computer, commercial power module, control module, wherein: the refrigerating host is respectively connected with the photovoltaic power supply module, the mains supply module and the control module; the mains supply module is used for providing a mains supply for the refrigeration host; the photovoltaic power module is used for providing a photovoltaic power supply for the refrigerating host; the control module is used for determining a power supply mode of the refrigeration host based on the commercial power consumed by the refrigeration host and the photovoltaic power consumed by the refrigeration host, and controlling the power supply of the refrigeration host according to the power supply mode. The method is applied to a control module included in the cold station system, and comprises the following steps: and determining a power supply mode of the refrigeration host based on the commercial power consumed by the refrigeration host and the photovoltaic power consumed by the refrigeration host, and controlling the power supply of the refrigeration host according to the power supply mode. Therefore, the power supply can be combined with the mains supply and the photovoltaic power supply to supply power to the refrigeration host in the cold station system, and the power supply mode of the refrigeration host can be determined based on the mains supply consumed by the refrigeration host and the photovoltaic power consumed by the refrigeration host, and the power supply of the refrigeration host is controlled according to the power supply mode, so that the running cost of the cold station system can be reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

Fig. 1 is a schematic structural diagram of a cold station system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a prior art cold station system;

FIG. 3 is a schematic flow diagram of the operation of the cold station system of FIG. 2;

FIG. 4 is a schematic structural diagram of a cold station system according to an embodiment of the present disclosure;

FIG. 5 is a schematic flow diagram of the operation of the cold station system of FIG. 4;

fig. 6 is a schematic flow chart of a power supply method of a cold station system according to an embodiment of the present application.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings, it being apparent that the described embodiments are some, but not all embodiments of the present application. It should be noted that: the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.

It will be appreciated by those skilled in the art that terms such as "first," "second," and the like in the embodiments of the present application are used merely to distinguish between different steps, devices, or modules, and do not represent any particular technical meaning or logical sequence therebetween.

It should also be understood that in this embodiment, "plurality" may refer to two or more, and "at least one" may refer to one, two or more.

It should also be appreciated that any component, data, or structure referred to in the embodiments of the present application may be generally understood as one or more without explicit limitation or the contrary in the context.

In addition, the term "and/or" in this application is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.

It should also be understood that the description of the embodiments herein emphasizes the differences between the embodiments, and that the same or similar features may be referred to each other, and for brevity, will not be described in detail.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. For an understanding of the embodiments of the present application, the present application will be described in detail below with reference to the drawings in conjunction with the embodiments. It will be apparent that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In order to solve the technical problem of higher operation cost of a cold station system in the prior art, the application provides the cold station system, a power supply method of the cold station system and a storage medium, and the operation cost of the cold station system can be reduced.

Fig. 1 is a schematic structural diagram of a cold station system according to an embodiment of the present application.

As shown in fig. 1, the cold station system specifically includes: a photovoltaic power module 20, a refrigeration host 10, a mains power module 30 and a control module 40.

The refrigeration host 10 is respectively connected with the photovoltaic power module 20, the commercial power module 30 and the control module 40.

The mains power module 30 is used for providing a mains power supply to the refrigeration host 10.

The photovoltaic power module 20 is configured to provide photovoltaic power to the refrigeration host 10.

The control module 40 is configured to determine a power supply mode of the refrigeration host 10 based on a commercial power consumed by the refrigeration host 10 and the photovoltaic power consumed by the refrigeration host 10, and control power supply of the refrigeration host 10 according to the power supply mode.

Here, the power supply method may include at least one of a photovoltaic power module 20, a commercial power module 30, an energy storage converter (Power Conversion System, PCS) group, and an uninterruptible power supply (Uninterruptible Power Supply, UPS).

As an example, the ratio of the power of the photovoltaic power source consumed by the refrigeration host 10 to the total power (i.e. the sum of the power of the mains power source consumed by the refrigeration host 10 and the power of the photovoltaic power source consumed by the refrigeration host 10) may be calculated. If the ratio is greater than or equal to the preset threshold, it can be stated that the weather is clear at this time, the photovoltaic power consumption can meet the most power consumption load demands of the refrigeration host 10, and at this time, the utility power burden can be reduced, for example, the power supply mode can be determined as follows: the refrigeration host 10 is powered via a photovoltaic power module 20.

As yet another example, the power supply mode of the cooling host 10 may be determined in combination with the mains power consumed by the cooling host 10, the photovoltaic power consumed by the cooling host 10, and the current temperature and humidity information.

As yet another example, the power supply mode of the cooling host 10 may be determined in combination with the mains power consumed by the cooling host 10, the photovoltaic power consumed by the cooling host 10, and current power rate information. For example, the ratio of the power of the photovoltaic power source consumed by the refrigeration host 10 to the total power (i.e., the sum of the power of the mains power source consumed by the refrigeration host 10 and the power of the photovoltaic power source consumed by the refrigeration host 10) may be calculated. If the ratio is greater than or equal to a preset threshold value and the electricity price information indicates that the current electricity price is in the trough, the power supply mode can be determined as follows: the refrigeration host 10 is powered via at least one of the photovoltaic power module 20 and the mains power module 30, and the energy storage module of the refrigeration host 10 is powered via at least one of the photovoltaic power module 20 and the mains power module 30.

As yet another example, the power supply mode of the cooling host 10 may be determined in combination with the mains power consumed by the cooling host 10, the photovoltaic power consumed by the cooling host 10, current temperature and humidity information, and current electricity price information.

In some optional implementations of this embodiment, the cold station system further includes a temperature and humidity sensor.

The temperature and humidity sensor is connected with the control module 40.

The temperature and humidity sensor is used for collecting temperature and humidity information, for example, the temperature and humidity sensor may be used for collecting outdoor temperature and humidity information, and sending the temperature and humidity information to the control module 40.

The control module 40 is further configured to determine power consumption trend information of the cold station system based on the temperature and humidity information collected by the temperature and humidity sensor.

It will be appreciated that the cold station system as a whole is designed according to the most severe local climatic conditions. The power distribution (including the power distribution of the commercial power module 30) and the backup power (which may include at least one of the photovoltaic power module 20 and the energy storage module) designed when the server is operated at full load are generally the highest outdoor temperature in summer. In practice, however, in winter or in spring and autumn, the outdoor air temperature is lower than that in summer, which is more favorable for heat dissipation. Therefore, the outdoor temperature and humidity sensor is used for collecting temperature and humidity information, and the power consumption of the cold station system in the current stage can be estimated more favorably, so that the power consumption trend of the cold station system is estimated.

In some application scenarios in the above alternative implementations, the control module 40 is further configured to determine a remaining usage duration of the backup power supply of the cold station system based on the power consumption trend information.

Wherein the backup power source comprises the photovoltaic power source.

In addition, the backup power source may also include a photovoltaic power module 20 and an energy storage module.

It can be appreciated that in the above application scenario, the remaining use duration of the standby power supply of the cold station system can be more accurately determined based on the electricity trend information, so that power supply scheduling can be more accurately performed.

In some application scenarios of the above alternative implementations, the cold station system further includes an energy storage module.

The energy storage module is connected to the control module 40.

The control module 40 is further configured to determine whether to control the energy storage module to store energy based on the electricity consumption trend information and the current electricity price information.

As an example, if the electricity consumption trend information indicates that the current electricity consumption amount of the cooling host 10 is low and the current electricity price information at the current time indicates that the current electricity price is in the valley, it may be determined to control the energy storage module to store energy.

As yet another example, if the electricity consumption trend information indicates that the current electricity consumption amount of the cooling host 10 is high and the current electricity price information at the current time indicates that the current electricity price is at the peak, it may be determined that the energy storage module does not need to be controlled to store energy.

It can be understood that under the application scenario, based on the electricity consumption trend information and the current electricity price information, whether the energy storage module is controlled to store energy can be flexibly determined, so that the electricity cost consumed by the cold station system can be reduced.

In some cases of the above application scenarios, the energy storage module includes at least one of: an energy storage converter group and an uninterruptible power supply.

It can be appreciated that in the above case, the energy storage converter set is used as the energy storage module, so that more standby electric power can be provided and the refrigeration cost can be reduced compared with the uninterruptible power supply.

In some alternative implementations of the present embodiment, the photovoltaic power module 20 includes a photovoltaic panel group, a bus unit, and a boost unit.

And the converging unit is respectively connected with the photovoltaic panel group and the boosting unit.

And the converging unit is used for converging and inputting the electric energy converted by the photovoltaic panel group to the boosting unit.

The boosting unit is configured to boost the direct current provided by the busbar unit based on the target voltage of the direct current busbar of the refrigeration host 10, and to switch the boosted direct current into the position of the direct current busbar of the refrigeration host 10.

It can be appreciated that in the above implementation manner, the electric energy conversion may be implemented by the photovoltaic panel set, the electric energy is collected by the collecting unit, and then the processed electric energy is provided to the refrigeration host 10 via the boosting unit, so that the refrigeration host 10 operates normally.

In some alternative implementations of the present embodiment, the mains supply module 30 is configured to connect to a first mains supply and a second mains supply, and the mains supply module 30 includes a first circuit breaker, a second circuit breaker, and a change-over switch.

The first circuit breaker is for controlling whether the mains power module 30 provides mains power via the first mains.

The second circuit breaker is for controlling whether the mains power module 30 provides mains power via the second mains.

In case the cooling master 10 supplies mains power via the mains power module 30, the change-over switch supplies mains power to the cooling master 10 by switching the first mains power or the second mains power.

It will be appreciated that in the alternative implementation described above, load balancing of the power supplies is achieved by means of redundant power supplies, and when one mains supply fails, the other mains supply may take over its operation to ensure a normal supply of mains power.

In some alternative implementations of the present embodiment, the cooling host 10 is a photovoltaic air conditioner.

It can be appreciated that in the above implementation, a photovoltaic air conditioner may be used as the cooling host, and thus, the running cost of the cold station system may be reduced.

The cold station system provided by the embodiment of the application comprises: photovoltaic power module 20, refrigeration host 10, mains power module 30, control module 40, wherein: the refrigeration host 10 is respectively connected with the photovoltaic power module, the commercial power module 30 and the control module 40; the mains power module 30 is configured to provide a mains power supply to the refrigeration host 10; the photovoltaic power module is used for providing photovoltaic power for the refrigeration host 10; the control module 40 is configured to determine a power supply mode of the refrigeration host 10 based on a commercial power consumed by the refrigeration host 10 and the photovoltaic power consumed by the refrigeration host 10, and control power supply of the refrigeration host 10 according to the power supply mode. Thus, the power supply can be provided for the refrigeration host in the cold station system by combining the mains power supply and the photovoltaic power supply, and the power supply mode of the refrigeration host 10 can be determined based on the mains power consumed by the refrigeration host 10 and the photovoltaic power consumed by the refrigeration host 10, and the power supply of the refrigeration host 10 is controlled according to the power supply mode, so that the running cost of the cold station system can be reduced.

The following exemplary description of the embodiments of the present application is provided, but it should be noted that the embodiments of the present application may have the features described below, and the following description should not be construed as limiting the scope of the embodiments of the present application.

First, referring to fig. 2, fig. 2 is a schematic structural diagram of a cold station system in the prior art. The uppermost end of the cold station system is provided with a circuit breaker of A-path and B-path commercial power (redundant distribution circuit), and the incoming line of a control cabinet of lower-end electric equipment (such as an air conditioner, a water pump cooling tower and the like) is provided with a double-power switch (ATS (Automatic Transfer Switching Equipment, automatic transfer switch). The equipment dual power switch defaults to be in an A-path commercial power gear, meanwhile, the lower end of the B-path commercial power is connected with a UPS (Uninterruptible Power Supply ) power supply of electric equipment in series, and a diesel generator is connected in parallel to be used as a system backup power supply.

With continued reference to fig. 3, fig. 3 is a schematic flow chart of operation for the cold station system of fig. 2.

As shown in fig. 3, the conventional data center project power-off switching process includes:

1) When the equipment normally operates, all cold station load equipment uses an A-path power supply;

2) When the A-path mains supply fails and fails, the ATS dual-power switch switches all loads to the B-path mains supply for operation;

3) When the B-path commercial power fails and fails, and the A-path power supply does not recover the power supply, the B-path UPS power supply provides 15 minutes of power supply output for all loads mounted on the B-path. Here, the requirement of GB50174-2017 on a class a data center UPS power supply is.

4) At this time, the power supply monitoring module detects that all the circuits B of the commercial power A have been powered off, and the UPS is started. And sending a starting instruction to the standby diesel generator.

5) The diesel generator starts to operate after receiving the starting instruction, and replaces UPS power supply in the B path to be put into use after the operation is stable.

With continued reference to fig. 4, fig. 4 is a schematic structural diagram of another cold station system according to an embodiment of the present application.

In fig. 4, circuit breakers (i.e., the first circuit breaker and the second circuit breaker) of an a-way power supply and a B-way power supply (redundant power distribution circuit) (i.e., the first commercial power supply and the second commercial power supply) are configured at the uppermost end of the cold station system, a double power switch (ATS automatic transfer switch, i.e., the transfer switch) is required to be configured at the inlet of a control cabinet of lower-end electric equipment (i.e., equipment such as an air conditioner (i.e., the refrigeration host 10) and a water pump cooling tower) respectively, the equipment double power switch defaults to be in a B-way commercial power gear, and meanwhile, an energy storage module of a PCS (Power Conversion System) is connected in parallel with the lower end of the B-way commercial power supply by the energy storage converter) as a system energy scheduling center, and in addition, the air conditioner host is a photovoltaic air conditioner, except that the main power supply is supplied by the commercial power (i.e., the commercial power module 30), and the other path is supplied by the photovoltaic system (i.e., the photovoltaic power module 20).

The energy storage converter, also called a bidirectional energy storage inverter, is a core component for realizing bidirectional flow of electric energy between the energy storage system and the power grid, and is used for controlling the charging and discharging processes of the battery to perform alternating current-direct current conversion.

The photovoltaic system (namely the photovoltaic module) consists of a photovoltaic panel, a converging unit and a DC/DC (direct current to direct current) boosting module (namely the boosting unit). And the photovoltaic panels form a power generation assembly, and electric energy is converged and input into the DC/DC module through the converging unit. And the DC/DC module boosts the direct current provided by the confluence device according to the target voltage of the direct current bus of the photovoltaic host, and is connected to the position of the direct current bus bar of the photovoltaic host.

The power supply of the photovoltaic air conditioner is composed of two parts: (1) a photovoltaic power source; (2) a mains supply.

When the cold station system is in normal operation, the energy storage module controller reads the duty ratio of the photovoltaic power supply of the air conditioner host machine in the total power consumption through a communication line, and estimates the battery capacity meeting the time (for example, 12 hours) of the standby power supply of the system. Meanwhile, outdoor weather conditions are transmitted to the energy storage module controller (namely the control module 40) through communication of the outdoor temperature and humidity sensor so as to evaluate the power utilization trend of the cold station, and power utilization trend information is obtained.

The energy storage module controller dynamically adjusts the charge and discharge of the system battery module on the basis of meeting the capacity of the backup power supply of the cold station by comparing peak-valley electricity prices, so that the system electricity fee expenditure is saved.

According to the requirements of the A-type data center, the backup diesel generator needs to meet the requirement of 12 hours of oil supply, and when the backup diesel generator is replaced by the energy storage PCS battery module, the backup power supply requirement also needs to be met. The novel cold station system preferentially consumes photovoltaic electric energy, if the photovoltaic power supply duty ratio is very high, the weather is clear, the photovoltaic power consumption can meet the requirement of most of power consumption load of a unit, the load of commercial power is reduced at the moment, and meanwhile, the capacity pressure of a standby power supply is reduced. The energy storage capability of the PCS power module can be released. The energy storage module controller comprehensively evaluates the releasable spare power capacity by comparing the partial consumption ratio of the photovoltaic power supply and estimating the influence of outdoor temperature and humidity on the cooling capacity of the system, and simultaneously combines the peak-valley electricity price policy of the commercial power to charge when the electricity price is low and to partially discharge the system when the electricity price is high. The electric charge expense can be saved for the user for a long time.

According to national standard GB50174-2017, the data center meeting one of the following conditions is a data center of A level:

1. interruption of operation of the electronic information system will cause significant economic losses;

2. interruption of operation of electronic information systems can cause serious confusion in public order.

Here, description is made of the outdoor temperature and humidity sensor:

because the cold station as a whole is a parameter designed according to the most severe local climatic conditions: and under the condition of the highest outdoor air temperature in summer, the power distribution and backup power supply capacity designed when the server runs at full load are generally adopted. In practice, however, in winter or in spring and autumn, the outdoor air temperature is lower than that in summer, which is more favorable for heat dissipation of the equipment. Therefore, the outdoor temperature and humidity sensor is adopted to collect data, so that the power consumption of the cold station in the current stage can be more favorably estimated, and the power consumption trend of the cold station of the data center is estimated.

The temperature outside the market is high, and the cooling capacity of the cooling tower is correspondingly reduced. Meanwhile, the corresponding cooling side water pump and cooling tower fan consume more power to achieve the same heat dissipation effect. Therefore, the power consumption of the whole system can be indirectly judged by sensing the external weather conditions. And because the off-line temperature is a continuous analog value (namely, the temperature cannot jump), the power consumption trend of the cold station of the data center can be obtained through the rising or falling slope of the temperature.

The following describes the energy-saving space of the electricity consumption of the data center:

the CPU of the current generation server adopts multi-core variable main frequency operation, the power consumption can reach the maximum only in part of time (such as 6.18, double 11 shopping knots or data volume explosion in the past year). The power consumption of the server is difficult to reach the highest value at other times;

in order to meet the expandability of facilities, modern data center servers (heat source equipment) are usually planned to enter into the field in batches within a few years, but the early-stage cold stations are often designed according to full-load capacity, so that the cold stations have a relatively large energy-saving regulation and control space within a few years. At the moment, the back-up PCS battery module can be fully utilized to adjust peak-valley electricity price, so that the energy efficiency is improved for the system, and the electricity charge expense is reduced.

With continued reference to fig. 5, fig. 5 is a schematic flow chart of operation for the cold station system of fig. 4.

As shown in fig. 5, the operation of the cold station system includes:

1) When the equipment normally operates, all cold station load equipment uses a B-path power supply, and energy storage capacity scheduling control is performed by combining the strategies. Wherein, the strategy comprises the following steps: charging is performed when the electricity price is low, and partial discharging is performed on the system when the electricity price is high.

2) When the B-path mains supply fails and fails, the ATS dual-power switch switches all loads to the A-path mains supply for operation.

3) When the A-path mains supply fails and fails, the ATS dual-power switch switches all loads back to the B-path mains supply; at the moment, under the condition that the control system monitors that the mains supply at the upper ends of the A path and the B path is not restored, the energy storage module inverter is put into operation to continuously supply power to the load.

It follows that the differences between the two cold station systems described above include:

1) Standby power supply:

the cold station system of fig. 2 uses a diesel generator as a backup power source, which is not environment-friendly;

the cold station system of fig. 4 uses a PCS energy storage module as a backup power source.

2) And a cold water host:

the cold station system of fig. 2 uses a conventional cold water master;

the cold station system of fig. 4 uses a photovoltaic cold water host machine, can use photovoltaic power supply under the condition of sufficient illumination in the daytime, reduces the dependence on power supply of a power grid, and improves the overall energy efficiency ratio of the system.

3) Energy scheduling:

the cold station system of fig. 2 has no energy scheduling function;

the cold station system of fig. 4 can replace part of the power load under good daytime and meteorological conditions based on the above-mentioned photovoltaic power supply, so that the capacity of part of the PCS energy storage system can be reasonably planned on the premise of safe and stable operation of the system, and charge and discharge can be carried out according to peak-to-valley electricity prices. Thereby further saving the electricity charge of the cold station system and the running cost.

This function can also be achieved when the energy storage PCS of the new data center cold station is replaced with an online UPS (Uninterruptible Power Supply ) power supply and a backup battery module of sufficient capacity is provided. However, after the related features are replaced, the switching time of the backup power supply is further shortened, and meanwhile, the cost is greatly increased.

It should be noted that, in addition to the above descriptions, the present embodiment may further include the technical features described in the above embodiments, so as to achieve the technical effects of the cold station system shown above, and the detailed description is referred to above, and is omitted herein for brevity.

According to the cold station system provided by the embodiment of the application, when the data center uses the photovoltaic host as a cold source system and simultaneously uses the energy storage module to replace the diesel generator, the energy storage battery can be optimally scheduled, so that the electricity charge is saved, and the emission of carbon is reduced. And on the premise of ensuring the reliable operation of the cold station system of the data center, the operation cost of the system is reduced. The high-efficiency power-saving operation of the whole cold station system can be realized by flexibly allocating the photovoltaic power generation assembly in the system and the energy storage battery control strategy for replacing the diesel generator.

Fig. 6 is a schematic flow chart of a power supply method of a cold station system according to an embodiment of the present application. The cold station system specifically comprises: a photovoltaic power module 20, a refrigeration host 10, a mains power module 30 and a control module 40.

The method is applied to the control module 40.

As shown in fig. 6, the method specifically includes:

step 101, determining a power supply mode of the refrigeration host based on the commercial power consumed by the refrigeration host and the photovoltaic power consumed by the refrigeration host, and controlling the power supply of the refrigeration host according to the power supply mode.

In this embodiment, the power supply mode may include at least one of a photovoltaic power module 20, a commercial power module 30, an energy storage converter (Power Conversion System, PCS) set, and an uninterruptible power supply (Uninterruptible Power Supply, UPS).

As an example, the ratio of the power of the photovoltaic power source consumed by the refrigeration host 10 to the total power (i.e. the sum of the power of the mains power source consumed by the refrigeration host 10 and the power of the photovoltaic power source consumed by the refrigeration host 10) may be calculated. If the ratio is greater than or equal to the preset threshold, it can be stated that the weather is clear at this time, the photovoltaic power consumption can meet the most power consumption load demands of the refrigeration host 10, and at this time, the utility power burden can be reduced, for example, the power supply mode can be determined as follows: the refrigeration host 10 is powered via a photovoltaic power module.

It should be noted that, in addition to the above descriptions, the present embodiment may further include the corresponding technical features described in the embodiment corresponding to fig. 1, so as to achieve the technical effects of the cold station system shown in fig. 1, and the detailed description with reference to fig. 1 is omitted herein for brevity.

The embodiment of the application also provides a storage medium (computer readable storage medium). The storage medium here stores one or more programs. Wherein the storage medium may comprise volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid state disk; the memory may also comprise a combination of the above types of memories.

When one or more programs in the storage medium are executable by one or more processors, the above-described power supply method of the cold station system executed on the electronic device side is implemented.

The above processor is configured to execute a power supply program of the cold station system stored in the memory, so as to implement the following steps of a power supply method of the cold station system executed on the electronic device side:

Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of function in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cold station system, the cold station system comprising: photovoltaic power module, refrigeration host computer, commercial power module, control module, wherein:

2. The cold station system of claim 1, further comprising a temperature and humidity sensor;

the temperature and humidity sensor is connected with the control module;

3. A cold station system according to claim 2, wherein,

the control module is also used for determining the residual using duration of the standby power supply of the cold station system based on the electricity utilization trend information, wherein the standby power supply comprises the photovoltaic power supply.

4. The cold station system of claim 2, further comprising an energy storage module;

the energy storage module is connected with the control module;

5. The cold station system of claim 4, wherein the energy storage module comprises at least one of:

an energy storage converter group and an uninterruptible power supply.

6. Cold station system according to one of claims 1 to 5, characterized in that the photovoltaic power module comprises a photovoltaic panel group, a junction unit and a boost unit;

7. Cold station system according to one of claims 1-5, characterized in that the mains supply module is adapted to be connected to a first mains supply and a second mains supply, the mains supply module comprising a first circuit breaker, a second circuit breaker and a change-over switch;

8. Cold station system according to one of claims 1 to 5, characterized in that the refrigeration host is a photovoltaic air conditioner.

9. A method of powering a cold station system, characterized in that the cold station system is a cold station system according to one of claims 1-8, the method being applied to a control module comprised by the cold station system, the method comprising:

10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the method of claim 9.