CN113849021A - Transformer substation temperature and humidity control system and method based on Internet of things - Google Patents
Transformer substation temperature and humidity control system and method based on Internet of things Download PDFInfo
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Abstract
The invention discloses a transformer substation temperature and humidity control system and method based on the Internet of things. The control method comprises the following steps: the control system is networked to realize information interaction between the upper computer and the lower computer; the temperature and humidity control equipment is connected to realize the control of the lower computer on the equipment; the temperature and humidity of the transformer substation are controlled, and the temperature and humidity of the transformer substation are detected and controlled; and (6) uploading the information. According to the invention, real-time control of temperature and humidity information of the transformer substation and remote control of temperature and humidity control equipment in the transformer substation are realized through networking information interaction of the upper computer, the lower computer and the Internet of things platform, the workload of operation and maintenance personnel is reduced, and unmanned and intelligent transformer substation is further realized.
Description
Technical Field
The invention relates to the field of intelligent control of substations, in particular to a substation temperature and humidity control system and method based on the Internet of things.
Background
Along with the continuous development of an electric power system, the automation degree is continuously improved, an unattended transformer substation also becomes a necessary trend, the unattended transformer substation is also an effective measure for promoting the modernization of the power grid production management, at present, an internal power supply company comprehensively carries out unattended transformation of the transformer substation, the problem that the on-site environment cannot be effectively controlled is also faced when the transformer substation is upgraded and transformed, and new challenges are provided for safe production and transformer operation and maintenance.
A 'comprehensive power data acquisition system based on the technology of the Internet of things' disclosed in Chinese patent literature, the publication number of which is CN213547185U and the publication date of which is 2021-06-25, comprises a monitoring platform, an Internet of things network and a sensing system; the monitoring platform comprises a data processing center and an application server and is used for collecting data acquired by the system; the Internet of things network adopts a wireless access network based on LPWAN technology, and the sensing system transmits information to the monitoring platform; the sensing system comprises a data acquisition terminal which is arranged at each node of the transformer substation and the distribution line and is used for acquiring electric power data and data influencing electric power. The system is combined with the LPWAN technology to realize the arrangement of the whole power distribution network, and the requirements of monitoring the operation of the transformer substation and the safety monitoring on the line are met; the front-end measurement and identification of the equipment operation data are realized by combining the LPWAN characteristics, the remote Internet of things monitoring with low energy consumption is realized, and the measurement and acquisition of the large-scale operation data are realized on the basis of the original sensing identification. But temperature and humidity control in the present transformer substation still can only control equipment such as air conditioner, dehumidifier, fan switch in every equipment room of every station in turn through fortune dimension personnel, lacks intelligent management and control. Thus the present that lacks operation and maintenance strength at the transformer substation gradually increases, and easy because the humiture of control substation in time and the trouble problem of finding the humiture controlgear in the transformer substation lead to the rise of transformer substation's equipment trouble risk, be unfavorable for the safe and stable operation of transformer substation.
Disclosure of Invention
The invention provides a transformer substation temperature and humidity control system and method based on the Internet of things, aiming at overcoming the problems that in the prior art center, temperature and humidity control in a transformer substation still needs a large amount of manual operation and lacks intelligent management and control, and temperature and humidity conditions in the transformer substation cannot be mastered and controlled in real time.
In order to achieve the purpose, the invention adopts the following technical scheme:
a transformer substation temperature and humidity control system based on the Internet of things comprises an upper computer, wherein the upper computer comprises a human-computer interaction interface for interaction and remote control of system information; the upper computer is in communication connection with the Internet of things platform, and the Internet of things platform is in communication connection with the lower computer; the lower computer comprises an Internet of things main node and a plurality of Internet of things sub-nodes connected with the Internet of things main node.
According to the invention, the transformer substation data is collected and controlled through a human-computer interaction interface in the upper computer; the Internet of things platform is used as an information transfer station to realize information interaction between an upper computer and a lower computer; the main node of the internet of things and the sub-nodes of the internet of things in the lower computer are used as actual execution equipment, so that the building coverage of the internet of things in the transformer substation, the acquisition of temperature and humidity and the control of the temperature and humidity in the substation by controlling low-voltage electric equipment in the substation including temperature and humidity control equipment are realized. The invention solves the problem that a great deal of manpower is needed to open or close equipment such as an air conditioner, a dehumidifier and the like in the transformer substation; the problems of indoor temperature and humidity, and the operation conditions of an air conditioner and a dehumidifier in the transformer substation can not be mastered in real time; the problems of protection, communication device crash and blockage are caused by untimely opening of the air conditioner and dehumidifier isothermal humidity equipment.
Preferably, the internet of things child node includes: the control module is used for controlling the work of the Internet of things sub-nodes; the in-station communication module is used for networking communication among nodes in the transformer substation; the display module is used for checking the equipment state and the temperature and the humidity of a site; the decoding and encoding module is used for controlling the field device after decoding; the temperature and humidity sensor is used for acquiring temperature and humidity data; the storage module is used for storing the coding and decoding command and the important information; the internet of things main node is based on the internet of things sub-node and further comprises an internet surfing module used for achieving information interaction with the internet of things platform.
The main node of the internet of things can be simultaneously connected with a plurality of sub-nodes of the internet of things, and the main node of the internet of things receives a command from the platform of the internet of things through the internet surfing module and simultaneously sends the collected transformer substation information to the platform of the internet of things. The IOT sub-node receives the command information from the IOT main node to execute the operation, and the command of the IOT sub-node from the IOT platform can be transmitted to the IOT sub-node through the IOT main node, so that the IOT sub-node does not need an internet surfing module, and the cost is saved.
A transformer substation temperature and humidity control method based on the Internet of things comprises the following steps:
s1, networking a control system, realizing information interaction by networking an upper computer and a lower computer through an Internet of things platform, and networking an Internet of things main node and a plurality of Internet of things sub-nodes in the lower computer in a station;
s2, connecting the temperature and humidity control equipment, wherein the main node of the Internet of things and the sub-nodes of the Internet of things in the lower computer are connected with the temperature and humidity control equipment through a decoding and encoding module;
s3, controlling the temperature and humidity of the transformer substation, and remotely controlling the temperature and humidity of a lower computer in the transformer substation by an upper computer through an Internet of things platform and controlling the temperature and humidity through temperature and humidity control equipment;
and S4, uploading the information, wherein the master node of the Internet of things in the lower computer uploads all the information in the control process to the platform of the Internet of things.
The upper computer comprises a man-machine interaction interface, the page is visual, the operation is simple, the installation is convenient, and the main functions of the upper computer are as follows: information interaction with an Internet of things platform is realized; remotely controlling various air conditioners and dehumidifiers in the transformer substation; and collecting and displaying temperature and humidity information of each substation equipment room in real time. The main functions of the lower computer in the invention are as follows: networking in the substation to realize information transmission; performing information interaction with an Internet of things platform; collecting the temperature and humidity of each equipment room in the transformer substation; controlling different types of air conditioners and dehumidifiers; according to the control demand, the independent control of the indoor temperature and humidity of the transformer substation is realized.
Preferably, in S1, the information interaction between the upper computer and the lower computer includes:
s11, creating a first product and a second product under the platform of the Internet of things;
s12, creating 1 st to nth devices corresponding to n substations under the first product project, and creating 1 st to nth devices corresponding to n substations under the second product project;
s13, connecting and communicating all devices under the first product project with a human-computer interaction interface of the upper computer;
s14, each device under the second product project is connected and communicated with a lower computer Internet of things main node in the corresponding transformer substation;
and S15, performing information transfer between the ith equipment under the first product project and the ith equipment under the second product project in the Internet of things platform.
According to the invention, the upper computer and the lower computer perform information interaction by using the Internet of things platform as a transfer platform, so that the accuracy of an information transmission object can be ensured, and the safety of information transmission can also be ensured. The information of the lower computer in the ith transformer substation is transmitted to the ith equipment under the second product project, and the information can be stored and historical data can be retrieved; meanwhile, the human-computer interaction interface can select to set and operate the ith transformer substation, and the command information can be transmitted to the ith transformer substation under the first product project. Then the ith equipment under two product projects transmits respective information interaction, thereby achieving the information interaction of the upper computer and the lower computer, and greatly improving the speed and the accuracy of the information interaction when one upper computer and a plurality of lower computers carry out the information interaction.
Preferably, in S3, the internet of things master node and the internet of things child node in the lower computer may respectively detect temperatures and humidities in different regions of a substation and control the temperatures and humidities through the temperature and humidity control device.
Preferably, the method for controlling the temperature and humidity of the internet of things main node comprises the following steps: receiving a feedback command from a child node of the Internet of things; the decoding encoder outputs a decoding and encoding command, and realizes storage and erasing operations by using keys; receiving a command from an Internet of things platform, and executing temperature and humidity detection and control according to the command; temperature and humidity sensors detect temperature and humidity, and a display screen displays the temperature, the humidity and the equipment state.
Preferably, the method for controlling the temperature and humidity of the internet of things sub-node comprises the following steps: the decoding encoder outputs a decoding and encoding command, realizes storage and erasure operations by using keys, and sends execution information to the Internet of things main node; receiving a command from a main node of the Internet of things, executing temperature and humidity detection and control according to the command, and sending execution information to the main node of the Internet of things; temperature and humidity sensors detect temperature and humidity, a display screen displays the temperature and humidity and the equipment state, and execution information is sent to the Internet of things main node.
The internet of things main node and the internet of things sub-node are identical in design structure, and the difference is that the internet of things main node is provided with an internet surfing module for information transmission with an internet of things platform; the internet of things sub-node only carries out in-station information interaction with the internet of things main node without an internet surfing module; therefore, the main node of the internet of things has all functions of the sub-nodes of the internet of things. The design and manufacturing cost are saved by the unified modular design of the main node of the internet of things and the sub-nodes of the internet of things, meanwhile, the main node of the internet of things can be connected with a plurality of sub-nodes of the internet of things, the expansibility of the sub-nodes of the internet of things is increased, and when related building facilities are added in the transformer substation, the sub-nodes of the internet of things connected with the main node of the internet of things can be directly added to detect and control the temperature and humidity of the newly added building facilities.
The invention has the following beneficial effects: the real-time control of the temperature and humidity information of the transformer substation and the remote control of the temperature and humidity control equipment in the transformer substation are realized through the networking information interaction of the upper computer, the lower computer and the Internet of things platform, so that the manpower and material resources are saved, the application cost is saved, and the stability and the safety of the operation of the transformer substation are improved; the unified modular design of the main nodes of the Internet of things and the sub-nodes of the Internet of things can increase and mine the functions of the nodes of the Internet of things by adding functional modules at the nodes, and can expand temperature and humidity detection and control areas by adding the connected sub-nodes of the Internet of things; and the damaged equipment can be timely found by combining the data detection of the temperature and humidity sensor and the operation control and self-checking performance of the temperature and humidity control equipment, so that the fault risk of the transformer substation is reduced.
Drawings
FIG. 1 is a system block diagram of the present invention;
FIG. 2 is a flow chart of a temperature and humidity control method of the present invention;
FIG. 3 is an information interaction connection diagram of the upper computer, the lower computer and the platform of the Internet of things;
FIG. 4 is a flow chart of the master node of the Internet of things of the present invention;
FIG. 5 is a flow chart of a sub-node of the Internet of things of the present invention;
FIG. 6 is a schematic connection diagram of a control module, a decoding and encoding module, an internet access module and a key of a master node of the Internet of things;
fig. 7 is a schematic connection diagram of a control module, an intra-station communication module, a display module, a storage module and a temperature and humidity sensor of a host node of the running internet of things.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1, a transformer substation temperature and humidity control system based on the internet of things comprises an upper computer, wherein the upper computer comprises a human-computer interaction interface for interaction and remote control of system information; the upper computer is in communication connection with the Internet of things platform, and the Internet of things platform is in communication connection with the lower computer; the lower computer comprises an Internet of things main node and a plurality of Internet of things sub-nodes connected with the Internet of things main node.
The thing networking child node includes: the control module is used for controlling the work of the Internet of things sub-nodes; the in-station communication module is used for networking communication among nodes in the transformer substation; the display module is used for checking the equipment state and the temperature and the humidity of a site; the decoding and encoding module is used for controlling the field device after decoding; the temperature and humidity sensor is used for acquiring temperature and humidity data; the storage module is used for storing the coding and decoding command and the important information; the internet of things main node further comprises an internet surfing module on the basis of the internet of things sub-node, and the internet surfing module is used for achieving information interaction with the internet of things platform.
As shown in fig. 2, a transformer substation temperature and humidity control method based on the internet of things includes:
s1, networking a control system, realizing information interaction by networking an upper computer and a lower computer through an Internet of things platform, and networking an Internet of things main node and a plurality of Internet of things sub-nodes in the lower computer in a station;
s2, connecting the temperature and humidity control equipment, wherein the main node of the Internet of things and the sub-nodes of the Internet of things in the lower computer are connected with the temperature and humidity control equipment through a decoding and encoding module;
s3, controlling the temperature and humidity of the transformer substation, and remotely controlling the temperature and humidity of a lower computer in the transformer substation by an upper computer through an Internet of things platform and controlling the temperature and humidity through temperature and humidity control equipment;
and S4, uploading the information, wherein the master node of the Internet of things in the lower computer uploads all the information in the control process to the platform of the Internet of things.
As shown in fig. 3, in S1, the information interaction between the upper computer and the lower computer includes:
s11, creating a first product and a second product under the platform of the Internet of things;
s12, creating 1 st to nth devices corresponding to n substations under the first product project, and creating 1 st to nth devices corresponding to n substations under the second product project;
s13, connecting and communicating all devices under the first product project with a human-computer interaction interface of the upper computer;
s14, each device under the second product project is connected and communicated with a lower computer Internet of things main node in the corresponding transformer substation;
and S15, performing information transfer between the ith equipment under the first product project and the ith equipment under the second product project in the Internet of things platform.
In S3, the main node of the Internet of things and the sub-nodes of the Internet of things in the lower computer can respectively detect the temperature and humidity of different areas in a transformer substation and control the temperature and humidity through temperature and humidity control equipment.
The method for controlling the temperature and the humidity of the main node of the Internet of things comprises the following steps: receiving a feedback command from a child node of the Internet of things; the decoding encoder outputs a decoding and encoding command, and realizes storage and erasing operations by using keys; receiving a command from an Internet of things platform, and executing temperature and humidity detection and control according to the command; temperature and humidity sensors detect temperature and humidity, and a display screen displays the temperature, the humidity and the equipment state.
The method for controlling the temperature and the humidity of the sub-nodes of the Internet of things comprises the following steps: the decoding encoder outputs a decoding and encoding command, realizes storage and erasure operations by using keys, and sends execution information to the Internet of things main node; receiving a command from a main node of the Internet of things, executing temperature and humidity detection and control according to the command, and sending execution information to the main node of the Internet of things; temperature and humidity sensors detect temperature and humidity, a display screen displays the temperature and humidity and the equipment state, and execution information is sent to the Internet of things main node.
As shown in fig. 6 and 7, which are circuit design connection diagrams of a master node of the internet of things, an STM32C8T6 is selected as a control chip U1 by a control module; the internet module selects a 4G communication module EC600S as a chip U2; the encoding and decoding module selects an IR05F infrared decoding encoder as a chip U3; the display module selects an OLED liquid crystal display screen as a chip U4; the intra-station communication module selects a Lora Internet of things communication module as a chip U5; the storage module selects a 16M Flash memory with a W25X16 model as a U6; the temperature and humidity sensor adopts DHT11 as a sensor P1.
Three GND pins of the control chip U1 are grounded, a 3V3 pin of the control chip U1 is connected with a 3.3V voltage input, and a 5V pin of the control chip U1 is connected with a 5V voltage input. A PB9 pin of the control chip U1 is connected with one end of the key K1, a PB8 pin of the control chip U1 is connected with one end of the key K2, a PC13 pin of the control chip U1 is connected with one end of the key K3, and the other end of the key K1, the other end of the key K2 and the other end of the key K3 are connected with one another and grounded.
The GND pin of the chip U2 is grounded, the VCC pin of the chip U2 is connected with 5V voltage input, the WK pin of the chip U2 is connected with the PB0 pin of the chip U1, the RX pin of the chip U2 is connected with the PB10 pin of the chip U1, the TX pin of the chip U2 is connected with the PB11 pin of the chip U1, and the FN pin of the chip U2 is connected with the PB1 pin of the chip U1.
The 3V3 pin of the chip U3 is connected with 3.3V voltage input, the RXD pin of the chip U3 is connected with the PA2 pin of the chip U1, the TXD pin of the chip U3 is connected with the PA3 pin of the chip U1, and the GND pin of the chip U3 is grounded.
The GND pin of the chip U4 is grounded, the VCC pin of the chip U4 is connected to a 5V voltage input, the SCL pin of the chip U4 is connected to the PB6 pin of the chip U1, and the SDA pin of the chip U4 is connected to the PB7 pin of the chip U1.
The GND pin of the chip U5 is grounded, the VCC pin of the chip U5 is connected with 5V voltage input, the TXD pin of the chip U5 is connected with the PA10 pin of the chip U1, the RXD pin of the chip U5 is connected with the PA9 pin of the chip U1, the AUX pin of the chip U5 is connected with the PA11 pin of the chip U1, and the MD0 pin of the chip U5 is connected with the PA12 pin of the chip U1.
The GND pin of the chip U6 is grounded, the WP # pin of the chip U6 is connected with 3.3V voltage input, the VCC pin of the chip U6 is connected with the HOLD pin and is grounded through a capacitor C1, the SO pin of the chip U6 is connected with the PB14 pin of the chip U1, the CS pin of the chip U6 is connected with the PA8 pin of the chip U1, the CLK pin of the chip U6 is connected with the PB13 pin of the chip U1, and the SI pin of the chip U6 is connected with the PB15 pin of the chip U1.
Pin No. 1 of the sensor P1 is grounded, pin No. 3 of the sensor P1 is connected with 3.3 volt input, and pin No. 2 of the sensor P1 is connected with pin PB5 of the chip U1.
According to the invention, the transformer substation data is collected and controlled through a human-computer interaction interface in the upper computer; the Internet of things platform is used as an information transfer station to realize information interaction between an upper computer and a lower computer; the main node of the internet of things and the sub-nodes of the internet of things in the lower computer are used as actual execution equipment, so that the building coverage of the internet of things in the transformer substation, the acquisition of temperature and humidity and the control of the temperature and humidity in the substation by controlling low-voltage electric equipment in the substation including temperature and humidity control equipment are realized. The invention solves the problem that a great deal of manpower is needed to open or close equipment such as an air conditioner, a dehumidifier and the like in the transformer substation; the problems of indoor temperature and humidity, and the operation conditions of an air conditioner and a dehumidifier in the transformer substation can not be mastered in real time; the problems of protection, communication device crash and blockage are caused by untimely opening of the air conditioner and dehumidifier isothermal humidity equipment.
The main node of the internet of things can be simultaneously connected with a plurality of sub-nodes of the internet of things, and the main node of the internet of things receives a command from the platform of the internet of things through the internet surfing module and simultaneously sends the collected transformer substation information to the platform of the internet of things. The IOT sub-node receives the command information from the IOT main node to execute the operation, and the command of the IOT sub-node from the IOT platform can be transmitted to the IOT sub-node through the IOT main node, so that the IOT sub-node does not need an internet surfing module, and the cost is saved.
The node of the Internet of things can also be provided with an external interface, and the external interface can be connected with other functional modules such as a noise detection module and is used for detecting noise in a transformer substation and judging whether a fault occurs; the particulate matter detection module is used for detecting the density of particulate matters in the air in the transformer substation and judging whether the working environment of equipment in the transformer substation meets the requirements or not; and the maintenance personnel identification module judges and identifies personnel information entering the transformer substation, and warns, warns and identifies unknown personnel entering the transformer substation without a fault. The purpose of increasing and deeply excavating the node function of the internet of things is achieved by connecting additional functional modules to the nodes of the internet of things. In addition, different function modules can be added to different Internet of things sub-nodes according to the environment or the requirement of detecting a control object, so that the selective detection and control of various factors in different areas in the transformer substation are achieved.
The upper computer comprises a man-machine interaction interface, the page is visual, the operation is simple, the installation is convenient, and the main functions of the upper computer are as follows: information interaction with an Internet of things platform is realized; remotely controlling various air conditioners and dehumidifiers in the transformer substation; and collecting and displaying temperature and humidity information of each substation equipment room in real time. The main functions of the lower computer in the invention are as follows: networking in the substation to realize information transmission; performing information interaction with an Internet of things platform; collecting the temperature and humidity of each equipment room in the transformer substation; controlling different types of air conditioners and dehumidifiers; according to the control demand, the independent control of the indoor temperature and humidity of the transformer substation is realized.
According to the invention, the upper computer and the lower computer perform information interaction by using the Internet of things platform as a transfer platform, so that the accuracy of an information transmission object can be ensured, and the safety of information transmission can also be ensured. The information of the lower computer in the ith transformer substation is transmitted to the ith equipment under the second product project, and the information can be stored and historical data can be retrieved; meanwhile, the human-computer interaction interface can select to set and operate the ith transformer substation, and the command information can be transmitted to the ith transformer substation under the first product project. Then the ith equipment under two product projects transmits respective information interaction, thereby achieving the information interaction of the upper computer and the lower computer, and greatly improving the speed and the accuracy of the information interaction when one upper computer and a plurality of lower computers carry out the information interaction.
The internet of things main node and the internet of things sub-node are identical in design structure, and the difference is that the internet of things main node is provided with an internet surfing module for information transmission with an internet of things platform; the internet of things sub-node only carries out in-station information interaction with the internet of things main node without an internet surfing module; therefore, the main node of the internet of things has all functions of the sub-nodes of the internet of things. The design and manufacturing cost are saved by the unified modular design of the main node of the internet of things and the sub-nodes of the internet of things, meanwhile, the main node of the internet of things can be connected with a plurality of sub-nodes of the internet of things, the expansibility of the sub-nodes of the internet of things is increased, and when related building facilities are added in the transformer substation, the sub-nodes of the internet of things connected with the main node of the internet of things can be directly added to detect and control the temperature and humidity of the newly added building facilities.
In the embodiment of the invention, the human-computer interaction interface of the upper computer is based on exe software in a Windows environment, is compiled by adopting Visual Studio software C # language, realizes the acquisition of control information and the connection and information interaction between the upper computer and the Internet of things platform, and respectively consists of four parts of MQTT operation, air conditioner control, dehumidifier control, temperature and humidity acquisition and the like.
The main node of the Internet of things in the lower computer takes an STM32F103C8T6 core board as a control center and adopts a modular design; the EC600S is a 4G communication module, and realizes information interaction with the Internet of things platform by using MQTT AT and instructions; the Lora module is an Internet of things communication module, networking is carried out in the station, the actual measurement of the communication distance can reach 3KM, and the Lora module penetrates through 8 layers of walls, so that the networking requirements of the transformer substation are fully met; the OLED is a liquid crystal display, so that the temperature, the humidity and the equipment state can be conveniently checked on site; the IR05F is an infrared decoding encoder, and realizes the control of equipment such as an air conditioner, a dehumidifier and the like after decoding; the DHT11 is a temperature and humidity sensor, and the precision of the temperature and humidity sensor meets the requirement of indoor temperature and humidity acquisition; the Flash memory adopts 16M W25X16 for storing infrared decoding commands and important information. The sub-nodes of the Internet of things adopt the same layout, and because the sub-node information comes from the main node and does not need to be connected with the platform of the Internet of things, the 4G internet surfing module is removed from the main node.
In the embodiment, the upper computer is networked in a Wifi mode, and the lower computer is networked in a 4G mode, so that two products are created on the platform of the Internet of things. Different devices are established corresponding to different substations under each product, each device under the Wifi product is connected with a human-computer interaction interface of the upper computer, each device under the 4G mode is connected with a lower computer Internet of things main node of the corresponding substation, information transfer between different devices of different products is completed by using the cloud flow function of the Internet of things platform, and information interaction between the upper computer and the lower computer is achieved.
As shown in fig. 4, which is a flow chart of the operation of the master node of the internet of things, the master node of the internet of things has four events to work,
event one: if the subnode feedback command is received by the Lora module, the subnode feedback command is uploaded to the Internet of things platform through the 4G module;
and event II: the infrared decoding encoder outputs a decoding command, realizes operations such as Flash storage, erasure and the like by using keys, and finally uploads execution information to the Internet of things platform;
event three: receiving and analyzing a command from the Internet of things platform, if the command is a sub-node command, transmitting the sub-node command to the sub-node through the Lora module, and transferring the sub-node command to a work flow of the sub-node, if the command is a main node command, screening a decoding command according to analysis information to control equipment such as an air conditioner and a dehumidifier or detect the temperature and humidity, and also performing control and temperature and humidity detection on the equipment such as the air conditioner and the dehumidifier through remote control, and finally uploading execution information to the Internet of things platform;
event four: the temperature and humidity are collected by the DHT11 sensor, the temperature and humidity and the equipment state are displayed by the OLED in real time, whether the indoor temperature and humidity meet the requirements is analyzed through threshold detection, and finally, the judgment and temperature and humidity information are uploaded to the Internet of things platform.
As shown in fig. 5, which is a work flow diagram of the internet of things sub-node, the internet of things sub-node has three events to work,
event one: the infrared decoding encoder outputs a decoding command, realizes operations such as Flash storage, erasure and the like by using keys, and finally sends execution information to the Internet of things main node;
event three: receiving and analyzing a command from the main node of the Internet of things, screening a decoding command according to the analyzed information to control equipment such as an air conditioner and a dehumidifier or detect the temperature and the humidity, or remotely controlling the equipment such as the air conditioner and the dehumidifier and detecting the temperature and the humidity, and finally sending execution information to the main node of the Internet of things;
event four: the temperature and humidity are collected by the DHT11 sensor, the temperature and humidity and the equipment state are displayed by the OLED in real time, whether the indoor temperature and humidity meet the requirements is analyzed through threshold detection, and finally, the judgment and the temperature and humidity information are sent to the Internet of things main node.
In the embodiment of the invention, the main node of the internet of things is placed in a control room of a transformer substation, the sub-nodes of the internet of things are placed around air conditioners, dehumidifiers, exhaust fans and other equipment in a switch room of the transformer substation, and charging sockets are arranged around the air conditioners, the dehumidifiers and other equipment, so that a power supply adopts a 5V1A power adapter to supply power. During decoding, the remote controller is aligned to an infrared receiving device of the infrared coding and decoding module, and a decoding command frame is output through a serial port and stored by a Flash memory; during coding, the stored decoding command frame is input into the infrared coding and decoding module through a serial port according to the control requirement, and is transmitted to corresponding equipment through the infrared transmitting device, so that the same control of air conditioners, dehumidifiers and other equipment in different types and different ages can be realized. The Save and Delete keys can realize the storage and deletion of decoding and coding command frames. When a human-computer interaction interface is operated, connection and message subscription with different devices of an Internet of things platform are realized through selection of a transformer substation and operation of an MQTT server; the method comprises the steps of sending messages to corresponding equipment on an Internet of things platform by key operation of an air conditioner, a dehumidifier, temperature and humidity acquisition and the like, wherein the messages are coded by Modbus, and the messages are sequentially in the specific format of frame header, slave machine address, equipment number, function code, temperature, humidity and CRC check code and are the same as communication frames between a main node of the Internet of things and sub-nodes of the Internet of things during networking in a station.
The above embodiments are described in detail for the purpose of illustration and understanding, and no unnecessary limitations are to be understood therefrom, and any modifications, equivalents, and improvements made within the spirit and principle of the present invention should be included therein.
Claims (7)
1. A transformer substation temperature and humidity control system based on the Internet of things is characterized by comprising an upper computer, wherein the upper computer comprises a human-computer interaction interface and is used for interaction and remote control of system information; the upper computer is in communication connection with the Internet of things platform, and the Internet of things platform is in communication connection with the lower computer; the lower computer is used for controlling and detecting the temperature and the humidity of the transformer substation; the lower computer comprises an Internet of things main node and a plurality of Internet of things sub-nodes connected with the Internet of things main node.
2. The substation temperature and humidity control system based on the internet of things of claim 1, wherein the internet of things sub-node comprises: the control module is used for controlling the work of the Internet of things sub-nodes; the in-station communication module is used for networking communication among nodes in the transformer substation; the display module is used for checking the equipment state and the temperature and the humidity of a site; the decoding and encoding module is used for controlling the field device after decoding; the temperature and humidity sensor is used for acquiring temperature and humidity data; the storage module is used for storing the coding and decoding command and the important information;
the internet of things main node is based on the internet of things sub-node and further comprises an internet surfing module used for achieving information interaction with the internet of things platform.
3. A transformer substation temperature and humidity control method based on the Internet of things is characterized by comprising the following steps:
s1, networking a control system, realizing information interaction by networking an upper computer and a lower computer through an Internet of things platform, and networking an Internet of things main node and a plurality of Internet of things sub-nodes in the lower computer in a station;
s2, connecting the temperature and humidity control equipment, wherein the main node of the Internet of things and the sub-nodes of the Internet of things in the lower computer are connected with the temperature and humidity control equipment through a decoding and encoding module;
s3, controlling the temperature and humidity of the transformer substation, and remotely controlling the temperature and humidity of a lower computer in the transformer substation by an upper computer through an Internet of things platform and controlling the temperature and humidity through temperature and humidity control equipment;
and S4, uploading the information, wherein the master node of the Internet of things in the lower computer uploads all the information in the control process to the platform of the Internet of things.
4. The method for controlling the temperature and humidity of the substation based on the internet of things according to claim 3, wherein in the step S1, information interaction between the upper computer and the lower computer comprises the following steps:
s11, creating a first product and a second product under the platform of the Internet of things;
s12, creating 1 st to nth devices corresponding to n substations under the first product project, and creating 1 st to nth devices corresponding to n substations under the second product project;
s13, connecting and communicating all devices under the first product project with a human-computer interaction interface of the upper computer;
s14, each device under the second product project is connected and communicated with a lower computer Internet of things main node in the corresponding transformer substation;
and S15, performing information transfer between the ith equipment under the first product project and the ith equipment under the second product project in the Internet of things platform.
5. The method for controlling the temperature and humidity of the substation based on the internet of things of claim 3, wherein in the step S3, the master node of the internet of things and the sub-nodes of the internet of things in the lower computer can respectively detect the temperature and humidity of different areas in the substation and control the temperature and humidity through temperature and humidity control equipment.
6. The substation temperature and humidity control method based on the Internet of things of claim 5, wherein the method for controlling the temperature and humidity of the Internet of things main node comprises the following steps:
receiving a feedback command from a child node of the Internet of things;
the decoding encoder outputs a decoding and encoding command, and realizes storage and erasing operations by using keys;
receiving a command from an Internet of things platform, and executing temperature and humidity detection and control according to the command;
temperature and humidity sensors detect temperature and humidity, and a display screen displays the temperature, the humidity and the equipment state.
7. The method for controlling the temperature and humidity of the substation based on the Internet of things of claim 5, wherein the method for controlling the temperature and humidity by the sub-nodes of the Internet of things comprises the following steps:
the decoding encoder outputs a decoding and encoding command, realizes storage and erasure operations by using keys, and sends execution information to the Internet of things main node;
receiving a command from a main node of the Internet of things, executing temperature and humidity detection and control according to the command, and sending execution information to the main node of the Internet of things;
temperature and humidity sensors detect temperature and humidity, a display screen displays the temperature and humidity and the equipment state, and execution information is sent to the Internet of things main node.
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Application publication date: 20211228 |