CN113375476B - Power control method and device for cooling tower fan group and computer equipment - Google Patents
Power control method and device for cooling tower fan group and computer equipment Download PDFInfo
- Publication number
- CN113375476B CN113375476B CN202110709443.8A CN202110709443A CN113375476B CN 113375476 B CN113375476 B CN 113375476B CN 202110709443 A CN202110709443 A CN 202110709443A CN 113375476 B CN113375476 B CN 113375476B
- Authority
- CN
- China
- Prior art keywords
- cooling tower
- tower fan
- target
- power
- fan group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
Abstract
The disclosure relates to the technical field of energy, and the embodiment of the disclosure discloses a power control method and device for a cooling tower fan group and computer equipment. One embodiment of the method comprises: calculating the cooling efficiency of the cooling tower fan group according to the obtained target outlet water temperature of the cooling tower fan group, the cooling tower inlet water temperature and the wet bulb temperature of air entering the cooling tower; calculating to obtain target ventilation quantity based on the cooling efficiency and the cooling water flow of the cooling tower fan group; establishing an objective function for minimizing the power of the cooling tower fan group based on the target ventilation and the power and ventilation of each cooling tower fan in the cooling tower fan group; solving the objective function to obtain the target power of each cooling tower fan in the cooling tower fan group so as to form a target power set; based on the target set of powers, the power of each cooling tower fan in the group of cooling tower fans is adjusted. The embodiment optimizes the operation of the system and reduces energy consumption.
Description
Technical Field
The embodiment of the disclosure relates to the technical field of energy, in particular to a power control method and device for a cooling tower fan group and computer equipment.
Background
The cooling tower is an important component of a heating ventilation air-conditioning system and has the function of exchanging heat between circulating water carrying waste heat and air in the tower, transmitting the heat of the water to the air and diffusing the heat into the atmosphere to cool the circulating water. The cooling tower has good operation performance and directly influences the cooling and heating effects of the air conditioning system. The energy consumption of the cooling tower is an important component of the energy consumption of a circulating cooling water system, the efficiency of the cooling tower is improved by using a control method of the cooling tower, and further a water chilling unit works in a high-efficiency area, so that the cooling tower and the whole air conditioning system are effectively improved, and the cooling tower has important social significance and economic value. The prior art relies on opening and stopping the control cooling tower and improves cooling tower efficiency more, though can reduce the amount of wind through the cooling tower through opening and stopping the control cooling tower, nevertheless can not the relation of rational utilization fan power and fan amount of wind fully reduce fan consumption and improve cooling tower efficiency.
At present, the cooling tower fan is optimized, frequency conversion adjustment is generally carried out on the cooling tower fan, and real-time monitoring and dynamic control of a cooling tower fan system are realized by adding a frequency conversion control module. However, if all cooling tower fans are subjected to frequency conversion, the investment of early stage or modification is greatly increased, and the economic efficiency of the project is affected. Therefore, how to reduce the energy consumption of a part of cooling tower fans in a plurality of cooling tower fan systems under the condition of frequency conversion is a current technical problem.
Disclosure of Invention
In view of this, the embodiments of the present disclosure provide a power control method and apparatus for a cooling tower fan group, and a computer device, so as to solve the problem of how to reduce energy consumption under the condition of adopting frequency conversion for some cooling tower fans in a multiple cooling tower fan system, and the problem of not reasonably utilizing the relationship between fan power and fan air volume to fully reduce fan power consumption and improve cooling tower efficiency in the prior art.
In a first aspect of the embodiments of the present disclosure, a method for controlling power of a cooling tower fan group is provided, including: calculating the cooling efficiency of the fan group of the cooling tower according to the obtained target outlet water temperature of the fan group of the cooling tower, the inlet water temperature of the cooling tower and the wet bulb temperature of air entering the cooling tower; calculating to obtain target ventilation quantity based on the cooling efficiency and the cooling water flow of the cooling tower fan group; establishing an objective function for minimizing the power of the cooling tower fan group based on the target ventilation and the power and ventilation of each cooling tower fan in the cooling tower fan group; solving the objective function to obtain the target power of each cooling tower fan in the cooling tower fan group so as to form a target power set; adjusting the power of each cooling tower fan in the group of cooling tower fans based on the target set of powers.
In a second aspect of the embodiments of the present disclosure, a power control device for a cooling tower fan group is provided, the device includes: the first calculation unit is configured to calculate the cooling efficiency of the cooling tower fan group according to the obtained target outlet water temperature of the cooling tower fan group, the obtained inlet water temperature of the cooling tower and the obtained wet bulb temperature of air entering the cooling tower; a second calculation unit configured to calculate a target ventilation amount based on the cooling efficiency and a cooling water flow rate of the cooling tower fan group; an objective function establishing unit configured to establish an objective function for minimizing power of the cooling tower fan group based on the target ventilation and power, ventilation of each cooling tower of the cooling tower fan group; the objective function solving unit is configured to solve the objective function to obtain the target power of each cooling tower in the cooling tower fan group so as to form a target power set; a power adjustment unit configured to adjust power of each cooling tower of the cooling tower fan group based on the target set of powers.
In a third aspect of the embodiments of the present disclosure, a computer device is provided, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the above method when executing the computer program.
In a fourth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, in which a computer program is stored, which when executed by a processor implements the steps of the above-mentioned method.
One of the above-described various embodiments of the present disclosure has the following advantageous effects: firstly, calculating the cooling efficiency of a fan group of the cooling tower according to the obtained target outlet water temperature, the inlet water temperature of the cooling tower and the wet bulb temperature of air entering the cooling tower. And then, calculating to obtain a target ventilation according to the cooling efficiency and the cooling water flow, and further constructing a target function for minimizing the power of the cooling tower fan group. And after the target function is optimized and solved to obtain the target power of each cooling tower fan, adjusting the power of the cooling tower fans. The operation optimization of the system is realized, the energy consumption is reduced, and a large amount of cost is saved for enterprises.
Drawings
The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements. It should be understood that the drawings are schematic and that elements and components are not necessarily drawn to scale.
FIG. 1 is a scenario diagram of an application scenario of an embodiment of the present disclosure;
FIG. 2 is a flow chart of a method for controlling power of a cooling tower fan group according to an embodiment of the present disclosure;
FIG. 3 is a block diagram of a power control apparatus for a cooling tower fan group provided by an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a computer device provided by an embodiment of the present disclosure.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the disclosed embodiments. However, it will be apparent to one skilled in the art that the present disclosure may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present disclosure with unnecessary detail.
A method and an apparatus for controlling power of a cooling tower fan group according to an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of an application scenario of a power control method for a cooling tower fan group according to an embodiment of the present disclosure.
In the application scenario of fig. 1, first, the computing device 101 may calculate the cooling efficiency 105 of the cooling tower fan group according to the obtained target outlet water temperature 102, inlet water temperature 103 of the cooling tower, and wet bulb temperature 104 of air entering the cooling tower. Then, the computing device 101 may calculate a target ventilation 107 based on the cooling efficiency 105 and the cooling water flow 106 of the cooling tower fan group. Then, the computing device 101 may establish an objective function 109 for minimizing the power of the cooling tower fan group based on the target ventilation 107 and the power and ventilation of each cooling tower fan in the cooling tower fan group, as indicated by reference numeral 108. Thereafter, the computing device 101 may solve the objective function 109 to obtain a target power of each cooling tower fan in the cooling tower fan group, so as to form a target power set 110. Finally, the computing device 101 may adjust the power of each cooling tower fan in the cooling tower fan group based on the target set of powers 110, as indicated by reference numeral 111.
The computing device 101 may be hardware or software. When the computing device is hardware, it may be implemented as a distributed cluster composed of multiple servers or terminal devices, or may be implemented as a single server or a single terminal device. When the computing device is embodied as software, it may be installed in the hardware devices enumerated above. It may be implemented, for example, as multiple software or software modules to provide distributed services, or as a single software or software module. And is not particularly limited herein.
It should be understood that the number of computing devices in FIG. 1 is merely illustrative. There may be any number of computing devices, as implementation needs dictate.
Fig. 2 is a flowchart of a power control method for a cooling tower fan group according to an embodiment of the present disclosure. The method of power control for a cooling tower fan group of FIG. 2 may be performed by the computing device 101 of FIG. 1. As shown in fig. 2, the method for controlling power of a cooling tower fan group includes the following steps:
step S201, calculating the cooling efficiency of the cooling tower fan group according to the obtained target outlet water temperature of the cooling tower fan group, the cooling tower inlet water temperature and the wet bulb temperature of air entering the cooling tower.
In some embodiments, an executing entity (for example, the computing device 101 shown in fig. 1) of the power control method for a cooling tower fan group may calculate the cooling efficiency of the cooling tower fan group according to the obtained target outlet water temperature, inlet water temperature of the cooling tower, and wet bulb temperature of air entering the cooling tower. Here, the target outlet water temperature may be a required temperature for the outlet water temperature of the entire cooling tower fan group, and may be preset.
The cooling tower fan group stated above may be a cooling system consisting of a plurality of cooling tower fans. The fan used for cooling tower is a machine which can raise gas pressure and discharge gas by means of input mechanical energy, belonging to driven fluid machinery. The cooling tower may be a device that uses water as a circulating coolant to absorb heat from the system and discharge it to the atmosphere to reduce the temperature of the water. The water and the air are in flowing contact and then are subjected to heat exchange to generate steam, and the steam volatilizes and takes away heat to achieve evaporation heat dissipation, convection heat transfer and radiation heat transfer to dissipate preheating generated in industry or refrigeration air conditioners, so that the evaporation heat dissipation device for reducing the water temperature can ensure the normal operation of the system.
In some alternative implementations of some embodiments, the cooling efficiency may be calculated according to the following formula:
wherein η is used to characterize cooling efficiency;
t in the method is used for representing the water inlet temperature of the cooling tower;
t out the method is used for representing the target outlet water temperature;
t wb for characterizing the wet bulb temperature of the air entering the cooling tower.
In some embodiments, the corresponding temperature parameters at the different frequencies include a target outlet water temperature, a cooling tower inlet water temperature, and a wet bulb temperature of air entering the cooling tower. The water inlet temperature of the cooling tower can be measured by a temperature sensor arranged on a water inlet pipe and a water outlet pipe of a fan of the cooling tower, and the wet bulb temperature of air entering the cooling tower can also be measured by the sensor.
And step S202, calculating to obtain target ventilation volume based on the cooling efficiency and the cooling water flow of the cooling tower fan group.
In some embodiments, the execution body may calculate an optimal air-water ratio of the cooling tower fan group based on the cooling efficiency. Then, the execution body may calculate the target ventilation amount based on the optimal air-water ratio and the cooling water flow rate of the cooling tower fan group. Here, the air-water ratio may be a mass ratio of an air quantity and a water quantity flowing through the cooling tower fan group. As an example, the optimal air-water ratio and the optimal cooling water flow rate are obtained, and the target ventilation rate can be obtained through calculation.
In some embodiments, the cooling efficiency is also called as cooling tower efficiency, and under the condition that the outdoor wet bulb temperature is constant, the higher the cooling tower efficiency is, the smaller the heat exchange temperature difference of the cooling tower fan group is, and the lower the temperature of the cooling water returning machine is. And the factor affecting the efficiency of the cooling tower is usually that the air-water ratio is not in the optimal ratio. Under the condition that the outdoor wet bulb temperature and the effective heat exchange area of the cooling tower are fixed, the main factor influencing the efficiency of the cooling tower is the air-water ratio. At a certain outdoor wet bulb temperature, the higher the air-water ratio, the higher the cooling tower efficiency, but when the cooling tower efficiency reaches a certain ratio (for example, 80%), the efficiency is difficult to be improved by further improving the air-water ratio, so that the air-water ratio is normally adjusted to the certain ratio.
The cooling efficiency stated above can be the heat exchange efficiency of the cooling tower fan, and improving the heat exchange efficiency of the cooling tower fan can improve the working efficiency of the water chilling unit using the cooling tower fan group, thereby achieving the effect of energy conservation.
Step S203, establishing an objective function for minimizing the power of the cooling tower fan group based on the target ventilation and the power and ventilation of each cooling tower fan in the cooling tower fan group.
In some embodiments, the execution subject may establish an objective function for minimizing the power of the cooling tower fan group based on the target ventilation and the power and ventilation of each cooling tower fan in the cooling tower fan group. Here, the constraints of the objective function include at least a ventilation constraint and a power constraint.
In some optional implementations of some embodiments, the power constraint at least includes: the power of each fixed-frequency cooling tower fan in the cooling tower fan group is in direct proportion to the first power of the frequency of the fixed-frequency cooling tower fan, and the power of each variable-frequency cooling tower fan in the cooling tower fan group is in direct proportion to the third power of the frequency of the variable-frequency cooling tower fan.
In some embodiments, the group of cooling tower fans includes at least one fixed frequency cooling tower fan and at least one variable frequency cooling tower fan. The fixed frequency can be a rated frequency adopted by power generation, transmission, transformation and distribution equipment of a power system and industrial and civil electrical equipment, and is expressed in hertz (Hz). As an example, the grid frequency of the current power supply is 50Hz, so the fixed frequency is 50Hz, and the frequency range of the frequency converter is less than or equal to the grid frequency.
As an example, if there are 6 constant frequency cooling tower fans and 2 variable frequency cooling tower fans in the cooling tower fan group, x is used 1 And x 2 Representing the states of 2 variable-frequency cooling tower fans, and using x 3 、x 4 、x 5 、x 6 、x 7 And x 8 Showing the states of 6 constant frequency cooling tower fans. The states include an operating state and a stop state, x 1 ,…x 8 ∈[0,1]0 indicates a stop state, and 1 indicates an operation state. By x 9 ，x 10 The frequency of 2 frequency conversion cooling tower fans is expressed by x 11 ,…x 16 And =50 represents the frequency of the remaining 6 constant-frequency cooling tower fans, namely the frequency is 50Hz. The power of the fan of the constant-frequency cooling tower is represented by P, and the power of the fan of the variable-frequency cooling tower is in direct proportion to the third power of the frequency of the fan. Therefore, the objective function established by taking the minimization of the sum of the powers of the fixed-frequency cooling tower fan and the variable-frequency cooling tower fan in the cooling tower fan group as the target can be expressed as follows:
wherein, said λ 1 And λ 2 The value of (2) depends on factory information of the variable frequency cooling tower fan.
In some optional implementations of some embodiments, the above ventilation constraint condition includes at least: the ventilation volume of each cooling tower fan in the cooling tower fan group accords with a preset ventilation volume range, the ventilation volume of each cooling tower fan in the cooling tower fan group is in direct proportion to the frequency of the cooling tower fan, and the ventilation volume of the cooling tower fan group is larger than or equal to the target ventilation volume.
As an example, since the target ventilation is represented by q, since the ventilation of the constant-frequency cooling tower fan and the variable-frequency cooling tower fan is proportional to the primary power of the respective frequencies, the constraint condition can be expressed as:
wherein alpha is a coefficient, and the value of alpha depends on the respective factory information of the cooling tower fan.
The power of the fan is in direct proportion to the third power of the fan frequency without considering the power consumption of the frequency converter. When the factors of the construction, arrangement and the like of the cooling tower are not changed, the efficiency of the cooling tower is only related to the wind-water ratio, so that the efficiency of the cooling tower is only a function of the fan frequency. The efficiency of the cooling tower can be improved by adjusting the frequency of the fan, so that the purposes of fully reducing the power consumption of the fan and improving the efficiency of the cooling tower by reasonably utilizing the relation between the power of the fan and the air quantity of the fan can be achieved.
And S204, solving the objective function to obtain the target power of each cooling tower fan in the cooling tower fan group so as to form a target power set.
In some embodiments, the executing agent may solve the objective function by using a genetic algorithm to obtain the target power of each cooling tower fan in the cooling tower fan group.
Step S205, based on the target power set, adjusting the power of each cooling tower fan in the cooling tower fan group.
In some embodiments, the execution subject may adjust the power of each cooling tower fan in the cooling tower fan group to a corresponding target power in the target power set.
In some optional implementations of some embodiments, the method further comprises: in response to the fact that the target power which is 0 exists in the target power set, obtaining the service time of each cooling tower fan in the cooling tower fan group to obtain a service time set; selecting a target number of use time from the use time set as target use time to obtain a target use time set; and controlling the fixed-frequency cooling tower fan corresponding to each target use time in the target use time set to stop running. The above target number may be the same as the number of target powers of 0 in the target power set. As an example, the execution subject may select a use time having a long use time as the target use time from the use time set.
One of the above-described various embodiments of the present disclosure has the following advantageous effects: firstly, calculating the cooling efficiency of a fan group of the cooling tower according to the obtained target outlet water temperature, the inlet water temperature of the cooling tower and the wet bulb temperature of air entering the cooling tower. And then, calculating to obtain a target ventilation quantity according to the cooling efficiency and the cooling water flow, and further constructing a target function for minimizing the power of the fan group of the cooling tower. And after the target function is optimized and solved to obtain the target power of each cooling tower fan, adjusting the power of the cooling tower fans. The operation optimization of the system is realized, the energy consumption is reduced, and a large amount of cost is saved for enterprises. In addition, the return water temperature of the refrigerating machine is ensured to be as close to the efficient operation area of the refrigerating machine as possible, the cooling tower fan unit is ensured to support the operation of the system with the least number of operation units and the least starting times, the energy conservation of the system is realized when the air conditioning unit operates in a reliable and efficient area, and the service lives of the cooling tower and the refrigerating machine are prolonged.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods. For details not disclosed in the embodiments of the apparatus of the present disclosure, refer to the embodiments of the method of the present disclosure.
Fig. 3 is a schematic diagram of a power control device of a cooling tower fan group according to an embodiment of the present disclosure. As shown in fig. 3, the power control device for the cooling tower fan group includes:
the first calculating unit 301 is configured to calculate the cooling efficiency of the cooling tower fan group according to the obtained target outlet water temperature of the cooling tower fan group, the obtained inlet water temperature of the cooling tower and the obtained wet bulb temperature of air entering the cooling tower;
a second calculating unit 302 configured to calculate a target ventilation based on the cooling efficiency and the cooling water flow rate of the cooling tower fan group;
an objective function establishing unit 303 configured to establish an objective function for minimizing power of the cooling tower fan group based on the target ventilation amount and the power and ventilation amount of each cooling tower in the cooling tower fan group;
an objective function solving unit 304, configured to solve the objective function to obtain a target power of each cooling tower in the cooling tower fan group, so as to form a target power set;
a power adjustment unit 305 configured to adjust the power of each cooling tower of the cooling tower fan group based on the target set of powers.
In some embodiments, the cooling efficiency is calculated according to the following formula:
wherein η is used to characterize cooling efficiency;
t in the method is used for representing the water inlet temperature of the cooling tower;
t out the method is used for representing the target outlet water temperature;
t wb for characterizing the wet bulb temperature of the air entering the cooling tower.
In some embodiments, the second computing unit 302 of the power control device of the cooling tower fan group is further configured to: calculating an optimal air-water ratio of the cooling tower fan group based on the cooling efficiency; and calculating to obtain the target ventilation quantity based on the optimal air-water ratio and the cooling water flow of the cooling tower fan group.
In some embodiments, the constraints of the objective function at least include: power constraints and ventilation constraints.
In some embodiments, the power constraints at least include: the power of each fixed-frequency cooling tower fan in the cooling tower fan group is in direct proportion to the first power of the frequency of the fixed-frequency cooling tower fan, and the power of each variable-frequency cooling tower fan in the cooling tower fan group is in direct proportion to the third power of the frequency of the variable-frequency cooling tower fan.
In some embodiments, the ventilation constraints at least include: the ventilation rate of each cooling tower fan in the cooling tower fan group accords with a preset ventilation rate range, the ventilation rate of each cooling tower fan in the cooling tower fan group is in direct proportion to the primary power of the frequency of the cooling tower fan, and the ventilation rate of the cooling tower fan group is larger than or equal to the target ventilation rate.
In some embodiments, the power control of the cooling tower fan group is further configured to: in response to the fact that the target power which is 0 exists in the target power set, obtaining the service time of each cooling tower fan in the cooling tower fan group to obtain a service time set; selecting a target number of use time from the use time set as target use time to obtain a target use time set; and controlling the fixed-frequency cooling tower fan corresponding to each target use time in the target use time set to stop running.
It will be understood that the units described in the apparatus 300 correspond to the various steps in the method described with reference to fig. 2. Thus, the operations, features and resulting advantages described above with respect to the method are also applicable to the apparatus 300 and the units included therein, and are not described herein again.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure.
Fig. 4 is a schematic diagram of a computer device 4 provided by the disclosed embodiment. As shown in fig. 4, the computer device 4 of this embodiment includes: a processor 401, a memory 402 and a computer program 403 stored in the memory 402 and executable on the processor 401. The steps in the various method embodiments described above are implemented when the processor 401 executes the computer program 403. Alternatively, the processor 401 implements the functions of the respective modules/units in the above-described respective apparatus embodiments when executing the computer program 403.
Illustratively, the computer program 403 may be partitioned into one or more modules/units, which are stored in the memory 402 and executed by the processor 401 to accomplish the present disclosure. One or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 403 in the computer device 4.
The computer device 4 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computer devices. Computer device 4 may include, but is not limited to, a processor 401 and a memory 402. Those skilled in the art will appreciate that fig. 4 is merely an example of a computer device 4 and is not intended to limit computer device 4 and may include more or fewer components than those shown, or some of the components may be combined, or different components, e.g., the computer device may also include input output devices, network access devices, buses, etc.
The Processor 401 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 402 may be an internal storage unit of the computer device 4, for example, a hard disk or a memory of the computer device 4. The memory 402 may also be an external storage device of the computer device 4, such as a plug-in hard disk provided on the computer device 4, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. Further, memory 402 may also include both internal storage units of computer device 4 and external storage devices. The memory 402 is used for storing computer programs and other programs and data required by the computer device. The memory 402 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules, so as to perform all or part of the functions described above. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. 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 disclosure.
In the embodiments provided in the present disclosure, it should be understood that the disclosed apparatus/computer device and method may be implemented in other ways. For example, the above-described apparatus/computer device embodiments are merely illustrative, and for example, a division of modules or units, a division of logical functions only, an additional division may be made in actual implementation, multiple units or components may be combined or integrated with another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the present disclosure may implement all or part of the flow of the method in the above embodiments, and may also be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of the above methods and embodiments. The computer program may comprise computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain suitable additions or additions that may be required in accordance with legislative and patent practices within the jurisdiction, for example, in some jurisdictions, computer readable media may not include electrical carrier signals or telecommunications signals in accordance with legislative and patent practices.
The above examples are only intended to illustrate the technical solutions of the present disclosure, not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present disclosure, and are intended to be included within the scope of the present disclosure.
Claims (6)
1. A power control method for a cooling tower fan group is characterized by comprising the following steps:
calculating the cooling efficiency of a cooling tower fan group according to the obtained target outlet water temperature, the cooling tower inlet water temperature and the wet bulb temperature of air entering the cooling tower, wherein the cooling tower fan group at least comprises a fixed-frequency cooling tower fan and at least one variable-frequency cooling tower fan;
calculating to obtain target ventilation quantity based on the cooling efficiency and the cooling water flow of the cooling tower fan group;
establishing an objective function by minimizing the sum of the powers of the fixed-frequency cooling tower fan and the variable-frequency cooling tower fan in the cooling tower fan group as an objective based on the target ventilation and the power and ventilation of each cooling tower fan in the cooling tower fan group; the constraints of the objective function include at least: power constraint conditions and ventilation quantity constraint conditions; the power constraints include at least: the power of each fixed-frequency cooling tower fan in the cooling tower fan group is in direct proportion to the first power of the frequency of the fixed-frequency cooling tower fan, and the power of each variable-frequency cooling tower fan in the cooling tower fan group is in direct proportion to the third power of the frequency of the variable-frequency cooling tower fan; the ventilation volume constraints include at least: the ventilation quantity of each cooling tower fan in the cooling tower fan group conforms to a preset ventilation quantity range, the ventilation quantity of each cooling tower fan in the cooling tower fan group is in direct proportion to the primary power of the frequency of the cooling tower fan, and the ventilation quantity of the cooling tower fan group is larger than or equal to the target ventilation quantity;
solving the objective function to obtain the target power of each cooling tower fan in the cooling tower fan group so as to form a target power set;
adjusting the power of each cooling tower fan in the group of cooling tower fans based on the target set of powers;
the method further comprises the following steps:
in response to the fact that the target power which is 0 exists in the target power set, obtaining the service time of each cooling tower fan in the cooling tower fan group to obtain a service time set;
selecting a target number of use time from the use time set as target use time to obtain a target use time set;
and controlling the fixed-frequency cooling tower fan corresponding to each target use time in the target use time set to stop running.
2. The method of claim 1, wherein the cooling efficiency is calculated according to the following equation:
wherein η is used to characterize cooling efficiency;
t in the method is used for representing the water inlet temperature of the cooling tower;
t out used for representing the target outlet water temperature;
t wb for characterizing the wet bulb temperature of the air entering the cooling tower.
3. The method of claim 1, wherein calculating a target ventilation based on the cooling efficiency and cooling water flow of the cooling tower fan group comprises:
calculating an optimal air-water ratio of the cooling tower fan group based on the cooling efficiency;
and calculating to obtain the target ventilation quantity based on the optimal air-water ratio and the cooling water flow of the cooling tower fan group.
4. A power control apparatus for a cooling tower fan cluster, comprising:
the first calculation unit is configured to calculate and obtain the cooling efficiency of the cooling tower fan group according to the obtained target outlet water temperature, the cooling tower inlet water temperature and the wet bulb temperature of air entering the cooling tower, wherein the cooling tower fan group at least comprises one fixed-frequency cooling tower fan and at least one variable-frequency cooling tower fan;
a second calculation unit configured to calculate a target ventilation amount based on the cooling efficiency and a cooling water flow rate of the cooling tower fan group;
an objective function establishing unit configured to establish an objective function with a minimum sum of the powers of the constant-frequency cooling tower fan and the variable-frequency cooling tower fan in the cooling tower fan group as a target based on the target ventilation amount and the power and ventilation amount of each cooling tower in the cooling tower fan group; the constraints of the objective function include at least: power constraint conditions and ventilation quantity constraint conditions; the power constraints include at least: the power of each fixed-frequency cooling tower fan in the cooling tower fan group is in direct proportion to the first power of the frequency of the fixed-frequency cooling tower fan, and the power of each variable-frequency cooling tower fan in the cooling tower fan group is in direct proportion to the third power of the frequency of the variable-frequency cooling tower fan; the ventilation volume constraints include at least: the ventilation quantity of each cooling tower fan in the cooling tower fan group conforms to a preset ventilation quantity range, the ventilation quantity of each cooling tower fan in the cooling tower fan group is in direct proportion to the primary power of the frequency of the cooling tower fan, and the ventilation quantity of the cooling tower fan group is larger than or equal to the target ventilation quantity;
the objective function solving unit is configured to solve the objective function to obtain the target power of each cooling tower in the cooling tower fan group so as to form a target power set;
a power adjustment unit configured to adjust power of each cooling tower of the cooling tower fan group based on the target set of powers;
the power adjustment unit is further configured to: in response to the fact that the target power which is 0 exists in the target power set, obtaining the service time of each cooling tower fan in the cooling tower fan group to obtain a service time set; selecting a target number of use time from the use time set as target use time to obtain a target use time set; and controlling the fixed-frequency cooling tower fan corresponding to each target use time in the target use time set to stop running.
5. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 3 when executing the computer program.
6. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110709443.8A CN113375476B (en) | 2021-06-25 | 2021-06-25 | Power control method and device for cooling tower fan group and computer equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110709443.8A CN113375476B (en) | 2021-06-25 | 2021-06-25 | Power control method and device for cooling tower fan group and computer equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113375476A CN113375476A (en) | 2021-09-10 |
| CN113375476B true CN113375476B (en) | 2023-03-21 |
Family
ID=77579132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110709443.8A Active CN113375476B (en) | 2021-06-25 | 2021-06-25 | Power control method and device for cooling tower fan group and computer equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113375476B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5556599A (en) * | 1978-10-23 | 1980-04-25 | Sumitomo Chem Co Ltd | Cooling tower controller |
| CN106931603B (en) * | 2017-03-27 | 2023-05-12 | 重庆市计量质量检测研究院 | Central air conditioning cooling water system energy efficiency monitoring system based on internet of things |
| CN107451397B (en) * | 2017-07-06 | 2020-12-08 | 扬州大学 | Cooling tower fan based on optimized operation and adjusting mode accurate quantitative optimization selection method |
| CN110374906B (en) * | 2019-07-03 | 2020-08-11 | 长安大学 | System and method for optimizing and controlling fan group efficiency of long and large highway tunnel |
| CN110631212B (en) * | 2019-08-16 | 2021-09-24 | 西安建筑科技大学 | Energy-saving control method for central air-conditioning cooling water system |
| CN111076602A (en) * | 2019-12-31 | 2020-04-28 | 北京世纪互联宽带数据中心有限公司 | Cooling tower fan control method and system |
| CN112461036B (en) * | 2020-11-09 | 2022-05-31 | 新奥数能科技有限公司 | Cooling tower fan control method and device, terminal equipment and storage medium |
| CN112990674A (en) * | 2021-03-01 | 2021-06-18 | 哈尔滨工程大学 | Multi-target operation scheduling method for offshore floating wind power plant |
-
2021
- 2021-06-25 CN CN202110709443.8A patent/CN113375476B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113375476A (en) | 2021-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7567888B2 (en) | Method for evaluating and optimizing performance of chiller system | |
| CN110398034B (en) | Cooling tower control method and system of air conditioner and air conditioner | |
| CN106895525A (en) | It is a kind of with recuperation of heat/heat dissipation system for computer room and its operation method of full natural cooling | |
| CN103868190A (en) | Energy-saving control method suitable for central air-conditioning cooling water system | |
| CN111867330A (en) | Method and system for adjusting communication machine building machine room based on IT load change | |
| WO2023040694A1 (en) | Method and apparatus for calculating energy efficiency of refrigerating machine room, and electronic device | |
| CN110631212B (en) | Energy-saving control method for central air-conditioning cooling water system | |
| CN104595223A (en) | Method and system for controlling rotating speed of fan based on weather information | |
| CN112461036B (en) | Cooling tower fan control method and device, terminal equipment and storage medium | |
| CN105371443A (en) | Control device for air-conditioning cooling water system and data processing method of main control module of control device | |
| CN111723533B (en) | Energy-saving calculation method for variable-frequency water pump of ground source heat pump system | |
| CN113375476B (en) | Power control method and device for cooling tower fan group and computer equipment | |
| CN107560086B (en) | Control method and device for central air conditioner cooling water system and central air conditioner | |
| JP2011226680A (en) | Cooling water producing facility | |
| US11765867B2 (en) | Cooling system for data center based on hyperbola cooling tower | |
| Demetriou et al. | Energy Modeling of Air-Cooled Data Centers: Part I—The Optimization of Enclosed Aisle Configurations | |
| KR102476032B1 (en) | System for water cooling of server in data center | |
| US20220373206A1 (en) | Chiller controller for optimized efficiency | |
| CN111076390A (en) | Method and device for managing operation of precise air conditioner | |
| CN204534939U (en) | Air conditioner in machine room hot water control device | |
| JP2015169367A (en) | Air conditioning system and air conditioning system control method | |
| CN115540218A (en) | Control system and method for efficient machine room | |
| CN114543405B (en) | Energy auditing method, device and equipment of refrigeration system and storage medium | |
| CN212619461U (en) | Common refrigerating system for equipment and plant | |
| US20220373210A1 (en) | Chiller controller for optimized efficiency |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |