Fan frequency converter cooling system control method, device and equipment and storage medium

Abstract

The invention discloses a fan frequency converter cooling system control method, device and equipment and a storage medium, the air volume can be automatically calculated and adjusted according to the current fan frequency converter temperature of a unit and the real-time data of the indoor temperature, so that the air pressure in a frequency converter chamber is matched with the preset air pressure condition, namely the micro-positive pressure state is maintained, dust pollution is reduced, and the service life of the fan frequency converter is prolonged. Therefore, the fault risk of the fan frequency converter is reduced. The method comprises the steps that the frequency converter temperature of each fan frequency converter in a fan frequency converter chamber is obtained for temperature detection; if it is detected that the specified fan frequency converter to be cooled and / or to be cooled is present, the specified air outlet volume and the specified air inlet volume of the current fan frequency converter chamber are determined, and the target air inlet volume of the fan frequency converter chamber is determined according to the relation between the specified air outlet volume and the preset air volume; and according to the air volume difference between the target air inlet volume and the specified air inlet volume, the corresponding indoor ventilation cooling fan is controlled to be turned on or turned off, so that the air pressure of the fan frequency converter chamber is matched with the preset air pressure condition.

Description

Technical Field

[0001] The present application relates to the technical field of fan inverter cooling system control, and in particular to a fan inverter cooling system control method, device, equipment and storage medium. Background Art

[0002] The fan inverter is an electrical device used to control the speed of the fan. It adjusts the speed of the fan by changing the power supply frequency and voltage of the motor. At present, the inverter cooling mainly adopts the method of outdoor natural ventilation and forced ventilation of the fan outlet on the top of the inverter cabinet. However, since the air inlet area is about twice the air outlet area, the speed of the air outlet (9.3m / s) is greater than the speed of the air inlet (5.1m / s), which forms a large negative pressure in the inverter room, and a large amount of dust outside is adsorbed into the interior of the inverter room. The dust enters the inverter room and its power unit, and adsorbs on the circuit board. Once the inverter produces condensation in the process of hot to cold state, it will cause the circuit board components to short-circuit and cause control failure when it is powered on again. If the dust entering is conductive dust, it may directly cause equipment failure, which may cause irreversible damage and cause great interference to the stable operation of the inverter, seriously affecting the safe and stable operation of the inverter and the unit, and increasing the maintenance cost. Summary of the invention

[0003] In view of this, the present application provides a fan inverter cooling system control method, device, equipment and storage medium, the main purpose of which is to solve the problem that the current fan inverter cooling system will cause outdoor dust to be adsorbed into the interior of the inverter room, thereby causing inverter equipment failure.

[0004] According to a first aspect of the present application, a fan inverter cooling system control method is provided, the method comprising:

[0005] Obtain the inverter temperature of each fan inverter in the fan inverter room for temperature detection, wherein the inverter cabinet where each fan inverter is located is provided with a cabinet top fan, and the fan inverter room is provided with a plurality of indoor ventilation and cooling fans;

[0006] If it is detected that there is a designated fan inverter to be cooled and / or to stop cooling, the designated air outlet and designated air inlet of the current fan inverter room are determined, and the target air inlet of the fan inverter room is determined according to the relationship between the designated air outlet and the preset air volume;

[0007] According to the air volume difference between the target air volume and the specified air volume, the corresponding indoor ventilation and cooling fan is controlled to be turned on or off so that the wind pressure in the fan inverter room matches the preset wind pressure condition.

[0008] Optionally, acquiring the inverter temperature of each fan inverter in the fan inverter room for temperature detection includes:

[0009] Based on the temperature sensor associated with each of the fan inverters, the inverter temperature of each of the fan inverters is obtained, wherein the air outlet of each of the fan inverters is configured with a measuring point, and the measuring point is provided with a temperature sensor associated with the corresponding fan inverter;

[0010] Determine the indoor ambient temperature of the fan inverter room, and calculate the temperature difference between the inverter temperature corresponding to each fan inverter and the indoor ambient temperature;

[0011] If the temperature difference associated with the fan inverter is greater than a preset temperature difference threshold and / or the inverter temperature of the fan inverter is greater than a preset temperature value, the fan inverter is determined to be a designated fan inverter to be cooled, and the working state of the cabinet top fan of the designated fan inverter is switched from an off state to an on state;

[0012] If the temperature difference associated with the fan inverter is less than or equal to the preset temperature difference threshold and the inverter temperature of the fan inverter is less than or equal to the preset temperature value, then the fan inverter is judged whether it is the designated fan inverter to stop cooling based on the working status of the cabinet top fan corresponding to the fan inverter, and the working status is either on or off.

[0013] Optionally, judging whether the fan inverter is a designated fan inverter for stopping cooling according to the working state of the cabinet top fan corresponding to the fan inverter includes:

[0014] Detecting the working status of the cabinet top fan corresponding to the fan inverter;

[0015] If the working state is the on state, it is determined that the fan inverter is the designated fan inverter for which cooling is to be stopped, and the working state of the cabinet top fan of the designated fan inverter is switched from the on state to the off state.

[0016] Optionally, determining the current designated air outlet volume and designated air inlet volume of the fan inverter room, and determining the target air inlet volume of the fan inverter room according to the relationship between the designated air outlet volume and the preset air volume, includes:

[0017] Determine at least one cabinet top fan in the fan inverter room whose working state is in the on state, calculate the air output of each cabinet top fan, and take the sum of the air outputs of all cabinet top fans as the specified air output, wherein the air output of the cabinet top fan is determined according to the air outlet area, motor power, fan blade diameter and rotation speed of the cabinet top fan;

[0018] Determine at least one indoor ventilation and cooling fan in the fan inverter room whose working state is in the on state, calculate the air intake volume of each indoor ventilation and cooling fan, and take the sum of the air intake volumes of all indoor ventilation and cooling fans as the specified air intake volume, wherein the air intake volume of the indoor ventilation and cooling fan is determined according to the air inlet area and fan parameters of the indoor ventilation and cooling fan, and the fan parameters include motor power, fan blade diameter and rotation speed;

[0019] The air volume multiple indicated by the preset air volume relationship is determined, and the product of the specified air volume outlet and the air volume multiple is used as the target air volume inlet.

[0020] Optionally, controlling to turn on or off a corresponding indoor ventilation and cooling fan according to an air volume difference between a target air volume and a specified air volume, so that the air pressure in the fan inverter room matches a preset air pressure condition, includes:

[0021] Comparing the designated air intake volume with the target air intake volume to generate a comparison result;

[0022] If the comparison result indicates that the specified air intake volume is greater than or less than the target air intake volume, the air volume difference between the specified air intake volume and the target air intake volume is calculated, and the indoor ventilation and cooling fan whose air intake volume matches the air volume difference is determined, and the indoor ventilation and cooling fan is controlled to be turned off or on.

[0023] Optionally, the method further comprises:

[0024] The local control cabinet power supply is a two-way three-phase four-wire power supply. Each indoor ventilation and cooling fan control branch in the local control cabinet is provided with a multi-function digital display, which is used to display voltage, current, power, air volume, and air pressure parameters in real time.

[0025] Optionally, the method further comprises:

[0026] The control unit of the local control cabinet is used to send a local control instruction to the execution unit so that the execution unit starts or shuts down the indoor ventilation and cooling fan in the fan inverter room; and / or,

[0027] The control unit of the local control cabinet is used to receive remote control instructions initiated by the remote control terminal based on the cloud controller, and send the remote control instructions to the execution unit so that the execution unit starts or shuts down the indoor ventilation and cooling fan indicated by the remote control instructions, wherein the cloud controller accesses the Internet through wireless Internet using a 4G card.

[0028] According to a second aspect of the present application, a fan inverter cooling system control device is provided, the device comprising: a local control cabinet, a fan inverter, a cabinet top fan and an indoor ventilation cooling fan, wherein the local control cabinet comprises a communication unit, a control unit and an execution unit;

[0029] The communication unit is used to obtain the inverter temperature of each fan inverter in the fan inverter room, and determine the current specified air outlet and specified air inlet of the fan inverter room, wherein the inverter cabinet where each fan inverter is located is provided with a cabinet top fan, and the fan inverter room is provided with a plurality of indoor ventilation and cooling fans;

[0030] The control unit is used to receive the inverter temperature, the designated air outlet volume and the designated air inlet volume transmitted by the communication unit, and perform temperature detection on the inverter temperature; if it is detected that there is a designated fan inverter to be cooled and / or to stop cooling, the target air inlet volume of the fan inverter room is determined according to the relationship between the designated air outlet volume and the preset air volume; according to the air volume difference between the target air inlet volume and the designated air inlet volume, a local control instruction is generated and sent to the execution unit to control the opening or closing of the corresponding indoor ventilation and cooling fan, so that the wind pressure of the fan inverter room matches the preset wind pressure condition;

[0031] The execution unit is used to receive the local control instruction sent by the control unit, and turn on and / or turn off the indoor ventilation and cooling fan according to the local control instruction.

[0032] According to a third aspect of the present application, a computer device is provided, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of any one of the methods described in the first aspect when executing the computer program.

[0033] According to a fourth aspect of the present application, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of any one of the methods described in the first aspect are implemented.

[0034] By means of the above technical scheme, the present application provides a method, device, equipment and storage medium for controlling a fan inverter cooling system. The present application controls the start and stop of the cooling system of the fan inverter based on an on-site control cabinet, wherein the inverter cabinet where each fan inverter is located is provided with a cabinet top fan, and a plurality of indoor ventilation and cooling fans are provided indoors in the fan inverter room. There are 10 indoor ventilation and cooling fans that can be controlled by the cooling system. The communication unit of the on-site control cabinet can transmit the inverter temperature of each fan inverter in the fan inverter room, the specified air outlet and the specified air inlet of the current fan inverter room to the control unit. The control unit of the on-site control cabinet can perform temperature detection on the inverter temperature. If it is detected that there is a specified fan inverter to be cooled and / or to be stopped from cooling, the target air inlet of the fan inverter room is determined according to the relationship between the specified air outlet and the preset air volume. Then, based on the air volume difference between the target air volume and the specified air volume, a local control instruction is generated and transmitted to the execution unit of the local control cabinet, so that the execution unit controls the opening or closing of the corresponding indoor ventilation and cooling fan, thereby achieving the matching of the wind pressure in the fan inverter room with the preset wind pressure condition. In an embodiment of the present application, the system can automatically calculate and adjust the air volume according to the real-time data of the current load condition of the unit, the fan inverter temperature and the indoor temperature. Then, it is ensured that the wind pressure in the inverter room matches the preset wind pressure condition, that is, it is maintained in a slightly positive pressure state to reduce dust pollution, thereby reducing the risk of failure of the fan inverter and extending the service life of the equipment.

[0035] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0037] Figure 1 A schematic flow chart of a fan inverter cooling system control method provided in an embodiment of the present application is shown;

[0038] Figure 2 A schematic diagram of the structure of an on-site control cabinet of a fan inverter cooling system control method provided in an embodiment of the present application is shown;

[0039] Figure 3A schematic diagram of a control circuit of a local control cabinet of a fan inverter cooling system control method provided in an embodiment of the present application is shown;

[0040] Figure 4 A schematic structural diagram of a fan inverter cooling system control device provided in an embodiment of the present application is shown;

[0041] Figure 5 A schematic diagram of the device structure of a computer device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0042] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0043] The installed capacity of the first phase of Jingtai Power Plant is 2×300MW. The primary and secondary fan inverters are arranged in a inverter room between two furnace dust collectors. There are 8 primary and secondary fan inverters in total, and the capacity of each inverter is 3800kVA. The current cooling method is outdoor natural ventilation and forced ventilation at the cabinet top fan outlet. Although the current air inlet area is about twice the area of ​​the air outlet, the speed of the air outlet (9.3m / s) is greater than the speed of the air inlet (5.1m / s), which creates a large negative pressure in the room, causing a large amount of dust outside to be adsorbed into the inverter room. Although there is a filter at the inlet, it cannot effectively solve the problem of dust pollution. Under the operation of the original cooling system, dust enters the inverter room and its power unit, and is adsorbed on the circuit board. Once the inverter produces condensation in the process from hot to cold, it will cause the circuit board components to short-circuit when powered on again, causing control failures. If the dust entering is conductive dust, it may directly cause equipment failure, which may cause irreversible damage and greatly interfere with the stable operation of the fan inverter, seriously affecting the safe and stable operation of the fan inverter and the unit, and increasing maintenance costs. At present, some manufacturers have air-water cooling systems, but the water consumption and water cooling pipes of the external system are increased, and outdoor civil engineering, electrical control, and air duct systems are added, making the system more complex and occupying a larger area. In addition, the control system is manually controlled and cannot realize automatic calculation of air volume according to random group load and remote control.

[0044] The present application embodiment provides a fan inverter cooling system control method, such as Figure 1 As shown, the method includes:

[0045] S10, obtaining the inverter temperature of each fan inverter in the fan inverter room for temperature detection, wherein the inverter cabinet where each fan inverter is located is provided with a cabinet top fan, and the fan inverter room is provided with a plurality of indoor ventilation and cooling fans.

[0046] The cooling system control method provided in this application is applicable to a local control cabinet, which requires two three-phase four-wire power supplies to improve the reliability of the power supply of the equipment. Figure 2 As shown, it includes a communication unit, a control unit and an execution unit. The communication unit is used to obtain the indoor ambient temperature of the fan inverter room, the inverter temperature of the fan inverter, the specified air inlet volume of the fan inverter room and the specified air outlet volume of the fan inverter room, and transmit the relevant parameters to the control unit, and generate a local control instruction based on the control unit. The control unit transmits the local control instruction to the execution unit, so that the execution unit controls to turn on or off the corresponding indoor ventilation and cooling fan based on the local control instruction.

[0047] It should be noted that the fan inverter room is equipped with multiple fan inverter cabinets and multiple indoor ventilation and cooling fans, and the fan inverter is deployed in the cabinet. In the actual operation process, the number of fans on the top of each inverter cabinet is 4, the cabinet top fan motor power is 2.63kW, the air volume is 13365m3 / h, the fan blade diameter is 630mm, and the speed is 1320rpm. The air outlet corresponding to each fan inverter is configured with a measuring point, and a temperature sensor can be set at the measuring point. The temperature sensor can associate the collected inverter temperature with the corresponding fan inverter identification and transmit it to the local control cabinet. At the same time, at least one temperature sensor can also be set in the fan inverter room. The temperature value collected by a temperature sensor or the average temperature collected by multiple temperature sensors can be transmitted to the local control cabinet as the indoor ambient temperature of the fan inverter room.

[0048] In this step, after receiving the indoor ambient temperature and the inverter temperature of each fan inverter, the control unit needs to perform temperature detection on the inverter temperature according to the indoor ambient temperature to determine whether there is a fan inverter to be cooled or to stop cooling. Specifically, the control unit calculates the temperature difference between the inverter temperature corresponding to each fan inverter and the indoor ambient temperature. The temperature difference is compared with the preset temperature difference threshold, and at the same time, the inverter temperature is compared with the preset temperature value. Among them, the preset temperature threshold and the preset temperature value can be set by relevant technical personnel according to actual needs. The specific preset temperature threshold can be 5°C, and the preset temperature value can be 50°C.

[0049] Furthermore, if the temperature difference associated with the fan inverter is greater than a preset temperature difference threshold and / or the inverter temperature of the fan inverter is greater than a preset temperature value, the fan inverter is determined to be the designated fan inverter to be cooled. At this time, the working state of the cabinet top fan of the designated fan inverter will be switched from the closed state to the open state, that is, the designated air volume of the fan inverter room will increase, and the air volume needs to be adjusted.

[0050] Furthermore, if the temperature difference associated with the fan inverter is less than or equal to the preset temperature difference threshold and the inverter temperature of the fan inverter is less than or equal to the preset temperature value, it is necessary to judge whether the fan inverter is the designated fan inverter to be stopped from cooling based on the working status of the cabinet top fan corresponding to the fan inverter. Specifically, if the working status is on, the fan inverter is determined to be the designated fan inverter to be stopped from cooling. At this time, the working status of the cabinet top fan of the designated fan inverter will switch from on to off, that is, the designated air outlet of the fan inverter room will be reduced, and the air intake volume needs to be adjusted.

[0051] It should be noted that the working state in this application includes the on state and the off state. In addition, the outdoor environment in the area where the fan inverter room is located does not exceed 38°C.

[0052] S20. If it is detected that there is a designated fan inverter to be cooled and / or to stop cooling, determine the designated air outlet and designated air inlet of the current fan inverter room, and determine the target air inlet of the fan inverter room based on the relationship between the designated air outlet and the preset air volume.

[0053] In this step, if it is detected that there is a designated fan inverter to be cooled and / or to stop cooling, it means that the current air volume of the fan inverter room, that is, the designated air volume has changed. In order to stabilize the wind pressure in the fan inverter room, it is necessary to determine the corresponding target air intake volume according to the current designated air volume, and then ensure that the air volume relationship between the target air intake volume and the designated air volume meets the preset air volume relationship, that is, the target air intake volume is 1.15 times the designated air volume, so that the indoor wind pressure of the inverter room is in a slightly positive pressure state.

[0054] In the actual operation process, the current air outlet and air inlet of the fan inverter room must be determined first, that is, the designated air outlet and designated air inlet must be determined. Specifically, the working state of each cabinet top fan in the fan inverter room is detected, and at least one cabinet top fan whose working state is in the open state is determined. For any cabinet top fan, the air outlet of the cabinet top fan is determined according to the air outlet area, motor power, fan blade diameter and rotation speed of the cabinet top fan. Further, the sum of the air outlets of all cabinet top fans is used as the designated air outlet. At the same time, at least one indoor ventilation and cooling fan whose working state is in the open state is determined in the fan inverter room. For any indoor ventilation and cooling fan, the air inlet of the indoor ventilation and cooling fan is determined according to the air inlet area and fan parameters of the indoor ventilation and cooling fan, wherein the fan parameters include motor power, fan blade diameter and rotation speed. Further, the sum of the air inlet of all indoor ventilation and cooling fans is used as the designated air inlet.

[0055] Further, an air volume multiple indicated by a preset air volume relationship is determined, and the product of the specified air volume outlet and the air volume multiple is used as the target air volume inlet.

[0056] S30. According to the air volume difference between the target air volume and the specified air volume, control the corresponding indoor ventilation and cooling fan to be turned on or off so that the wind pressure in the fan inverter room matches the preset wind pressure condition.

[0057] In this step, the control unit determines at least one indoor ventilation and cooling fan that matches the air volume difference between the target air volume and the specified air volume, and then generates a local control instruction carrying the fan identifier of at least one indoor ventilation and cooling fan and transmits it to the execution unit, so that the execution unit controls to turn on or off at least one indoor ventilation and cooling fan according to the local control instruction. The control circuit of the execution unit is as follows Figure 3 As shown in the figure, by controlling the power supply and the contactor (KM) and the relay (KH), the corresponding fan can be started. For example, to start fan No. 1, it is necessary to close the 1-KM contactor and the 1-KH relay to complete the starting logic. Figure 3 QF stands for Circuit Breaker, which is used to protect the circuit from overload and short circuit. FU3 is Fuse, which is used for overload protection. KM stands for Contactor, which is used to remotely control the opening and closing of the circuit. KH stands for Relay, which is used to transmit signals in the circuit or control other devices. DL4 is a power distribution device.

[0058] During the actual operation, the control unit compares the specified air intake volume with the target air intake volume and generates a comparison result. If the comparison result indicates that the specified air intake volume is greater than the target air intake volume, it means that at least one indoor ventilation and cooling fan in the open state needs to be turned off. At this time, the air volume difference between the specified air intake volume and the target air intake volume is calculated, and an indoor ventilation and cooling fan with an air intake volume equal to the air volume difference or multiple indoor ventilation and cooling fans with a sum of air intake volumes equal to the air volume difference is determined, and a local control instruction is generated to enable the execution unit to control the one indoor ventilation and cooling fan or multiple indoor ventilation and cooling fans to be turned off. If the comparison result indicates that the specified air intake volume is less than the target air intake volume, it means that at least one indoor ventilation and cooling fan in the closed state needs to be turned on. At this time, the air volume difference between the target air intake volume and the specified air intake volume is calculated, and an indoor ventilation and cooling fan with an air intake volume equal to the air volume difference or multiple indoor ventilation and cooling fans with a sum of air intake volumes equal to the air volume difference is determined, and a local control instruction is generated to enable the execution unit to control the one indoor ventilation and cooling fan or multiple indoor ventilation and cooling fans to be turned on.

[0059] It should be noted that each indoor ventilation and cooling fan control branch in the local control cabinet is equipped with a multi-function digital display, which is used to display voltage, current, power, air volume and air pressure parameters in real time.

[0060] In addition, the control unit of the local control cabinet can also receive remote control commands initiated by the remote control terminal based on the cloud controller, and realize the control of the start and stop of each fan on the mobile phone through the Internet. Specifically, after receiving the remote control command, the control unit will pass the remote control command to the execution unit, so that the execution unit starts or shuts down the indoor ventilation and cooling fan indicated by the remote control command. Among them, the cloud controller uses 4G card wireless Internet access.

[0061] The method provided in the embodiment of the present application is based on the on-site control cabinet to control the start and stop of the cooling system of the fan inverter, wherein the inverter cabinet where each fan inverter is located is provided with a cabinet top fan, and the indoor fan inverter room is provided with a plurality of indoor ventilation and cooling fans. There are 10 indoor ventilation and cooling fans that can be controlled by the cooling system. The communication unit of the on-site control cabinet can transmit the acquired inverter temperature of each fan inverter in the fan inverter room, the specified air outlet and the specified air inlet of the current fan inverter room to the control unit. The control unit of the on-site control cabinet can perform temperature detection on the inverter temperature. If it is detected that there is a specified fan inverter to be cooled and / or to stop cooling, the target air inlet of the fan inverter room is determined according to the relationship between the specified air outlet and the preset air volume. Then, based on the air volume difference between the target air volume and the specified air volume, a local control instruction is generated and transmitted to the execution unit of the local control cabinet, so that the execution unit controls the opening or closing of the corresponding indoor ventilation and cooling fan, thereby achieving the matching of the wind pressure in the fan inverter room with the preset wind pressure condition. In an embodiment of the present application, the system can automatically calculate and adjust the air volume according to the real-time data of the current load condition of the unit, the fan inverter temperature and the indoor temperature. By controlling the start and stop of the cooling system, remote and automatic adjustment is achieved to ensure that the wind pressure in the inverter room matches the preset wind pressure condition, that is, to maintain a slightly positive pressure state, which can effectively solve dust pollution, avoid the occurrence of primary and secondary fan inverter failures, improve the stable operation of the entire system and extend the service life of the equipment. It has a positive significance for the safe and stable operation of the generator set.

[0062] Further, as Figure 1 In a specific implementation of the method, the present application provides a fan inverter cooling system control device, such as Figure 4 As shown, the device includes: a local control cabinet, a fan frequency converter, a cabinet top fan and an indoor ventilation and cooling fan, wherein the local control cabinet includes a communication unit, a control unit and an execution unit;

[0063] The communication unit is used to obtain the inverter temperature of each fan inverter in the fan inverter room, and determine the current specified air outlet and specified air inlet of the fan inverter room, wherein the inverter cabinet where each fan inverter is located is provided with a cabinet top fan, and the fan inverter room is provided with a plurality of indoor ventilation and cooling fans;

[0064] The control unit is used to receive the inverter temperature, the designated air outlet volume and the designated air inlet volume transmitted by the communication unit, and perform temperature detection on the inverter temperature; if it is detected that there is a designated fan inverter to be cooled and / or to stop cooling, the target air inlet volume of the fan inverter room is determined according to the relationship between the designated air outlet volume and the preset air volume; according to the air volume difference between the target air inlet volume and the designated air inlet volume, a local control instruction is generated and sent to the execution unit to control the opening or closing of the corresponding indoor ventilation and cooling fan, so that the wind pressure of the fan inverter room matches the preset wind pressure condition;

[0065] The execution unit is used to receive the local control instruction sent by the control unit, and turn on and / or turn off the indoor ventilation and cooling fan according to the local control instruction.

[0066] In a specific application scenario, the control unit of the local control cabinet is used to obtain the inverter temperature of each fan inverter based on the temperature sensor associated with each fan inverter, wherein the air outlet of each fan inverter is configured with a measuring point, and the measuring point is provided with a temperature sensor associated with the corresponding fan inverter; determine the indoor ambient temperature of the fan inverter room, and calculate the temperature difference between the inverter temperature corresponding to each fan inverter and the indoor ambient temperature; if the temperature difference associated with the fan inverter is greater than the preset temperature difference threshold and / or the If the inverter temperature of the fan inverter is greater than the preset temperature value, it is determined that the fan inverter is the designated fan inverter to be cooled, and the working state of the cabinet top fan of the designated fan inverter is switched from the closed state to the open state; if the temperature difference associated with the fan inverter is less than or equal to the preset temperature difference threshold and the inverter temperature of the fan inverter is less than or equal to the preset temperature value, then it is determined whether the fan inverter is the designated fan inverter to stop cooling according to the working state of the cabinet top fan corresponding to the fan inverter, and the working state is the open state or the closed state.

[0067] In a specific application scenario, the control unit of the local control cabinet is used to detect the working status of the cabinet top fan corresponding to the fan inverter; if the working status is the on state, the fan inverter is determined to be the designated fan inverter for stopping cooling, and the working status of the cabinet top fan of the designated fan inverter is switched from the on state to the off state.

[0068] In a specific application scenario, the local control cabinet is used to determine at least one cabinet top fan in the fan inverter room whose working state is in the on state, calculate the air outlet of each cabinet top fan, and take the sum of the air outlets of all cabinet top fans as the designated air outlet, wherein the air outlet of the cabinet top fan is determined based on the air outlet area, motor power, fan blade diameter and rotation speed of the cabinet top fan; determine at least one indoor ventilation and cooling fan in the fan inverter room whose working state is in the on state, calculate the air intake of each indoor ventilation and cooling fan, and take the sum of the air intake of all indoor ventilation and cooling fans as the designated air intake, wherein the air intake of the indoor ventilation and cooling fan is determined based on the air intake area and fan parameters of the indoor ventilation and cooling fan, and the fan parameters include motor power, fan blade diameter and rotation speed; determine the air volume multiple indicated by the preset air volume relationship, and take the product between the designated air outlet and the air volume multiple as the target air intake.

[0069] In a specific application scenario, the control unit of the local control cabinet is used to compare the specified air intake volume with the target air intake volume to generate a comparison result; if the comparison result indicates that the specified air intake volume is greater than or less than the target air intake volume, the air volume difference between the specified air intake volume and the target air intake volume is calculated, and the indoor ventilation and cooling fan whose air intake volume matches the air volume difference is determined, and the indoor ventilation and cooling fan is controlled to be turned off or on.

[0070] In a specific application scenario, the local control cabinet is a two-way three-phase four-wire power supply, and each indoor ventilation and cooling fan control branch in the local control cabinet is provided with a multi-function digital display, which is used to display voltage, current, power, air volume, and air pressure parameters in real time.

[0071] In a specific application scenario, the control unit of the local control cabinet is used to send a local control instruction to the execution unit so that the execution unit starts or shuts down the indoor ventilation and cooling fan in the fan inverter room; and / or, the control unit of the local control cabinet is used to receive a remote control instruction initiated by a remote control terminal based on a cloud controller, and send the remote control instruction to the execution unit so that the execution unit starts or shuts down the indoor ventilation and cooling fan indicated by the remote control instruction, wherein the Internet access method of the cloud controller is wireless Internet access using a 4G card.

[0072] The device provided in the embodiment of the present application controls the start and stop of the cooling system of the fan inverter based on the local control cabinet, wherein the inverter cabinet where each fan inverter is located is provided with a cabinet top fan, and the indoor of the fan inverter room is provided with a plurality of indoor ventilation and cooling fans. There are 10 indoor ventilation and cooling fans that can be controlled by the cooling system. The communication unit of the local control cabinet can transmit the acquired inverter temperature of each fan inverter in the fan inverter room, the specified air outlet and the specified air inlet of the current fan inverter room to the control unit. The control unit of the local control cabinet can perform temperature detection on the inverter temperature. If it is detected that there is a specified fan inverter to be cooled and / or to stop cooling, the target air inlet of the fan inverter room is determined according to the relationship between the specified air outlet and the preset air volume. Then, based on the air volume difference between the target air volume and the specified air volume, a local control instruction is generated and transmitted to the execution unit of the local control cabinet, so that the execution unit controls the opening or closing of the corresponding indoor ventilation and cooling fan, thereby achieving the matching of the wind pressure in the fan inverter room with the preset wind pressure condition. In an embodiment of the present application, the system can automatically calculate and adjust the air volume according to the real-time data of the current load condition of the unit, the fan inverter temperature and the indoor temperature. Then, it is ensured that the wind pressure in the inverter room matches the preset wind pressure condition, that is, it is maintained in a slightly positive pressure state to reduce dust pollution, thereby reducing the risk of failure of the fan inverter and extending the service life of the equipment.

[0073] It should be noted that for other corresponding descriptions of the functional units involved in the fan inverter cooling system control device provided in the embodiment of the present application, reference can be made to Figures 1 to 3 The corresponding description in will not be repeated here.

[0074] In an exemplary embodiment, see Figure 5 , and also provides a device, which includes a communication bus, a processor, a memory and a communication interface, and may also include an input and output interface and a display device, wherein each functional unit can communicate with each other through the bus. The memory stores a computer program, and the processor is used to execute the program stored in the memory and execute the fan inverter cooling system control method in the above embodiment.

[0075] A computer-readable storage medium stores a computer program, which implements the steps of the fan inverter cooling system control method when executed by a processor.

[0076] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present application can be implemented by hardware, or by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each implementation scenario of the present application.

[0077] Those skilled in the art will appreciate that the accompanying drawings are merely schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily required for implementing the present application.

[0078] Those skilled in the art will appreciate that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the implementation scenario description, or can be changed accordingly and located in one or more devices different from the implementation scenario. The modules in the above implementation scenario can be combined into one module, or can be further split into multiple sub-modules.

[0079] The above application serial numbers are for description only and do not represent the advantages or disadvantages of the implementation scenarios.

[0080] The above disclosure only discloses several specific implementation scenarios of the present application. However, the present application is not limited thereto, and any changes that can be conceived by technicians in this field should fall within the scope of protection of the present application.

Claims

1. A fan inverter cooling system control method, characterized in that: The method is applicable to a local control cabinet, including: Obtain the inverter temperature of each fan inverter in the fan inverter room for temperature detection, wherein the inverter cabinet where each fan inverter is located is provided with a cabinet top fan, and the fan inverter room is provided with a plurality of indoor ventilation and cooling fans; If it is detected that there is a designated fan inverter to be cooled and / or to stop cooling, the designated air outlet and designated air inlet of the current fan inverter room are determined, and the target air inlet of the fan inverter room is determined according to the relationship between the designated air outlet and the preset air volume; According to the air volume difference between the target air volume and the specified air volume, the corresponding indoor ventilation and cooling fan is controlled to be turned on or off so that the wind pressure in the fan inverter room matches the preset wind pressure condition.

2. The method according to claim 1, characterized in that The step of obtaining the inverter temperature of each fan inverter in the fan inverter room for temperature detection includes: Based on the temperature sensor associated with each of the fan inverters, the inverter temperature of each of the fan inverters is obtained, wherein the air outlet of each of the fan inverters is configured with a measuring point, and the measuring point is provided with a temperature sensor associated with the corresponding fan inverter; Determine the indoor ambient temperature of the fan inverter room, and calculate the temperature difference between the inverter temperature corresponding to each fan inverter and the indoor ambient temperature; If the temperature difference associated with the fan inverter is greater than a preset temperature difference threshold and / or the inverter temperature of the fan inverter is greater than a preset temperature value, the fan inverter is determined to be a designated fan inverter to be cooled, and the working state of the cabinet top fan of the designated fan inverter is switched from an off state to an on state; If the temperature difference associated with the fan inverter is less than or equal to the preset temperature difference threshold and the inverter temperature of the fan inverter is less than or equal to the preset temperature value, then the fan inverter is judged whether it is the designated fan inverter to stop cooling based on the working status of the cabinet top fan corresponding to the fan inverter, and the working status is either on or off.

3. The method according to claim 2, characterized in that The step of judging whether the fan inverter is a designated fan inverter to be stopped from cooling according to the working state of the cabinet top fan corresponding to the fan inverter comprises: Detecting the working status of the cabinet top fan corresponding to the fan inverter; If the working state is the on state, it is determined that the fan inverter is the designated fan inverter for which cooling is to be stopped, and the working state of the cabinet top fan of the designated fan inverter is switched from the on state to the off state.

4. The method according to claim 1, characterized in that The step of determining the current designated air volume and designated air volume of the fan inverter room, and determining the target air volume of the fan inverter room according to the relationship between the designated air volume and the preset air volume, includes: Determine at least one cabinet top fan in the fan inverter room whose working state is in the on state, calculate the air output of each cabinet top fan, and take the sum of the air outputs of all cabinet top fans as the specified air output, wherein the air output of the cabinet top fan is determined according to the air outlet area, motor power, fan blade diameter and rotation speed of the cabinet top fan; Determine at least one indoor ventilation and cooling fan in the fan inverter room whose working state is in the on state, calculate the air intake volume of each indoor ventilation and cooling fan, and take the sum of the air intake volumes of all indoor ventilation and cooling fans as the specified air intake volume, wherein the air intake volume of the indoor ventilation and cooling fan is determined according to the air inlet area and fan parameters of the indoor ventilation and cooling fan, and the fan parameters include motor power, fan blade diameter and rotation speed; The air volume multiple indicated by the preset air volume relationship is determined, and the product of the specified air volume outlet and the air volume multiple is used as the target air volume inlet.

5. The method according to claim 1, characterized in that According to the air volume difference between the target air volume and the specified air volume, controlling to open or close the corresponding indoor ventilation and cooling fan so that the air pressure in the fan inverter room matches the preset air pressure condition, includes: Comparing the designated air intake volume with the target air intake volume to generate a comparison result; If the comparison result indicates that the specified air intake volume is greater than or less than the target air intake volume, the air volume difference between the specified air intake volume and the target air intake volume is calculated, and the indoor ventilation and cooling fan whose air intake volume matches the air volume difference is determined, and the indoor ventilation and cooling fan is controlled to be turned off or on.

6. The method according to claim 1, characterized in that The method further comprises: The local control cabinet power supply is a two-way three-phase four-wire power supply. Each indoor ventilation and cooling fan control branch in the local control cabinet is provided with a multi-function digital display, which is used to display voltage, current, power, air volume, and air pressure parameters in real time.

7. The method according to claim 1, characterized in that The method further comprises: The control unit of the local control cabinet is used to send a local control instruction to the execution unit so that the execution unit starts or shuts down the indoor ventilation and cooling fan in the fan inverter room; and / or, The control unit of the local control cabinet is used to receive remote control instructions initiated by the remote control terminal based on the cloud controller, and send the remote control instructions to the execution unit so that the execution unit starts or shuts down the indoor ventilation and cooling fan indicated by the remote control instructions, wherein the cloud controller accesses the Internet through wireless Internet using a 4G card.

8. A fan inverter cooling system control device, characterized in that: The device comprises: a local control cabinet, a fan frequency converter, a cabinet top fan and an indoor ventilation and cooling fan, wherein the local control cabinet comprises a communication unit, a control unit and an execution unit; The communication unit is used to obtain the inverter temperature of each fan inverter in the fan inverter room, and determine the current specified air outlet and specified air inlet of the fan inverter room, wherein the inverter cabinet where each fan inverter is located is provided with a cabinet top fan, and the fan inverter room is provided with a plurality of indoor ventilation and cooling fans; The control unit is used to receive the inverter temperature, the designated air outlet volume and the designated air inlet volume transmitted by the communication unit, and perform temperature detection on the inverter temperature; if it is detected that there is a designated fan inverter to be cooled and / or to stop cooling, the target air inlet volume of the fan inverter room is determined according to the relationship between the designated air outlet volume and the preset air volume; according to the air volume difference between the target air inlet volume and the designated air inlet volume, a local control instruction is generated and sent to the execution unit to control the opening or closing of the corresponding indoor ventilation and cooling fan, so that the wind pressure of the fan inverter room matches the preset wind pressure condition; The execution unit is used to receive the local control instruction sent by the control unit, and turn on and / or turn off the indoor ventilation and cooling fan according to the local control instruction.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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