CN113131610B - Remote control system of power distribution cabinet - Google Patents

Abstract

The invention discloses a remote control system of a power distribution cabinet, which comprises the following steps: step S1: the remote monitoring terminal distributes an IP address for the power distribution cabinet server through the wireless switch and forms a local area network together with the office network; step S2: the local area network is connected to the Internet through a remote secure communication module; step S3: the state parameters of the power distribution cabinet server are issued to a network; step S4: the remote monitoring terminal is connected with the network and receives state parameters issued by the power distribution cabinet server; step S5: the remote monitoring terminal sends out a command to adjust the state parameters of the power distribution cabinet server; step S6: the power distribution cabinet server controls and adjusts the running state of the power distribution cabinet. Therefore, the staff can remotely control the device locally through the local area network, and can remotely control the device remotely through the Internet in the foreign area, so that the device is convenient and practical.

Description

A remote control system for power distribution cabinet

technical field

The invention relates to the field of electric power monitoring, more specifically, it relates to a remote control system of a power distribution cabinet.

Background technique

The power distribution cabinet is the power distribution equipment used for power distribution, control, metering and cable connection in the power supply equipment system. Or protection and other functions, therefore, the power distribution cabinet occupies a very important position in the entire power industry.

Distribution automation refers to the use of modern electronics, communication technology, computer and network technology combined with power equipment to improve the quality of power supply, establish a closer and more responsible relationship with users, meet the diversity of user requirements at a reasonable price, and strive to power supply The economy is the best. At present, most distribution automation systems are based on communication networks, feeder terminal units and background computer networks. When the distribution network is in normal operation, it can monitor the operation status of the distribution network and change the operation mode remotely. It can be detected in time, but most of them lack automatic control function. Even if a few systems have automatic control function, the system is too complicated, which makes the cost high and is not suitable for popularization and application.

At present, the power distribution cabinet needs to be monitored frequently during the use of the power distribution cabinet, and the monitoring is often carried out by the staff who personally arrive at the site for monitoring. This not only wastes time, but also the monitoring effect is not good, and it is impossible to monitor the power distribution cabinet in real time. It is believed that the detection is prone to errors. In addition, the existing power distribution cabinets are all live equipment, and accidents may easily occur if non-staff operate improperly.

For example, a Chinese patent with the patent publication number CN201621361768.2 discloses a remote power monitoring system, including a substation and a power monitoring center. A power control unit connected to three-phase power is installed in the substation. The power control unit includes a voltage stabilizing circuit, sampling and conditioning circuit and single-chip microcomputer, the three-phase electricity is respectively connected to the voltage stabilizing circuit, the voltage stabilizing circuit is connected to the sampling conditioning circuit, the sampling conditioning circuit is connected to the single-chip microcomputer, the substation also includes an alarm, a camera, a sensor, a main control system and a network server, and the sensors include a smoke sensor and a temperature sensor. Sensors and alarms include infrared alarms and smoke alarms.

In short, there are many defects in the existing technology. For example, the existing power monitoring system is not comprehensive for the power monitoring of each power distribution cabinet, and cannot monitor and upload data in real time; If you are not familiar with the location of the electrical control cabinet, it will take a certain amount of time to find the location of the power distribution cabinet. For some existing power monitoring systems, there is a lack of auxiliary capabilities for the location of the power distribution cabinet.

Contents of the invention

Aiming at the deficiencies in the existing technology, the purpose of the present invention is to provide a remote control system for power distribution cabinets, which is used to solve the problems in the prior art that cannot be monitored in real time and upload data collection, and is also used to solve the current Some distribution cabinets cannot be located in real time.

To achieve the above object, the present invention provides the following technical solutions:

A remote control system for a power distribution cabinet, comprising the following steps:

Step S1: The remote monitoring terminal assigns an IP address to the power distribution cabinet server through the wireless switch, and forms a local area network together with the office network;

Step S2: the local area network is connected to the Internet through the remote safety communication module;

Step S3: publish the status parameters of the power distribution cabinet server to the network;

Step S4: The remote monitoring terminal connects to the network and receives the status parameters issued by the power distribution cabinet server;

Step S5: The remote monitoring terminal issues a command to adjust the status parameters of the distribution field electric cabinet server;

Step S6: the power distribution cabinet server controls and adjusts the operating state of the power distribution cabinet.

Through the above technical scheme, the wireless remote monitoring of the power distribution cabinet is realized through the remote monitoring terminal. The staff can also monitor the working status of the power distribution cabinet in real time when they are in the office or on a business trip, and have more control over the various operating parameters of the power distribution cabinet. Intuitive understanding makes it convenient for staff to monitor and maintain the power distribution cabinet, which greatly saves a lot of manpower and time. At the same time, when the power distribution cabinet fails, it can also be repaired in time to avoid losses, that is, , the staff can carry out remote control locally through the local area network, and can also carry out remote control through the Internet in other places.

The present invention is further set as: in step S1, the remote monitoring terminal includes a mobile phone terminal, a computer terminal or a combination thereof.

The present invention is further set as: the mobile phone terminal includes an initialization module, a connection setting module, a remote connection module, a remote command generation module, a media data generation module, a media data display module, a data packaging module, a data unpacking module, and a desktop image data solution module. Compression module, desktop image data display module and data buffer module.

The present invention is further configured as follows: the computer terminal includes a UPS power supply, a host, a display screen, a keyboard, and a printer, and the UPS power supply supplies power to the host computer, the display screen, the keyboard, and the printer.

Through the above technical solution, the mobile phone terminal and the computer terminal are connected to the server of the remote monitoring terminal, and the mobile terminal such as a mobile phone is used as a medium to perform remote operations on the server of the remote monitoring terminal, and the information and data in the server of the remote terminal can be obtained in time. , easy to operate.

The present invention is further set as: in step S2, the remote safety communication module has S-Link and WLAN technologies.

Through the above-mentioned technical scheme, through the remote safety communication module using S-Link and WLAN technology, the communication safety and real-time performance of the remote control process are guaranteed.

The present invention is further set as follows: in step S3, the status parameter is released on the network through a web page view.

Through the above technical solution, by publishing the status parameters on the network in the form of a webpage view, the staff can intuitively check the specific conditions of various parameters of the power distribution cabinet, so as to facilitate subsequent operations.

The present invention is further set as: in step S4, the remote monitoring terminal is connected to the network through WIFI, GPRS, 2G, 3G or 4G.

Through the above technical solution, the network is connected by WIFI, GPRS, 2G, 3G or 4G, which reduces the communication cost and is easy to popularize and implement.

The present invention is further set as follows: in step S6, a general microcomputer comprehensive protection device is provided in the power distribution cabinet, the general microcomputer comprehensive protection device is connected to the power distribution cabinet server through communication, and the general microcomputer comprehensive protection device is provided with Voltage sensor, current sensor, temperature sensor, humidity sensor, signal conditioning circuit and A/D conversion circuit, the voltage sensor, current sensor, temperature sensor, humidity sensor, signal conditioning circuit and A/D conversion circuit are electrically connected in sequence.

Through the above technical scheme, by setting a general microcomputer integrated protection device in the power distribution cabinet, it is unnecessary to install a large number of meters in the power distribution cabinet, saving space, and at the same time, it is also convenient for real-time monitoring of various parameters in the power distribution cabinet. monitor.

The present invention is further configured as follows: the power distribution cabinet is also provided with a GPS positioning module, and the GPS positioning module communicates with the power distribution cabinet server, and uploads the real-time positioning information of the power distribution cabinet to the remote monitoring terminal.

Through the above technical scheme, the GPS positioning module is installed in the power distribution cabinet, which can locate the position of the power distribution cabinet in real time, and upload the location information to the remote monitoring terminal in real time. When the power distribution cabinet fails, it is beneficial for the staff to search and repair. save time.

The present invention is further set as: the remote monitoring terminal is also provided with a Bluetooth ad hoc network, the power distribution cabinet server is also provided with an NB-IOT network module, and the Bluetooth ad hoc network and the NB-IOT network module communicate with the Internet respectively connection, the Bluetooth ad hoc network controls the NB-IOT network module through the Internet, and then realizes the real-time remote control of the power distribution cabinet by the remote monitoring terminal.

Through the above technical solution, through the combination of Bluetooth ad hoc network and NB-IOT network technology to complete the interconnection and intercommunication between the local Bluetooth ad hoc network and the Internet, and the practicality of using the combination of Bluetooth ad hoc network and NB-IOT network technology Stronger, the remote monitoring terminal can be directly connected to the server of the power distribution cabinet through Bluetooth to remotely monitor the power distribution cabinet, and the data communication between the local network, the Internet and the NB-IOT network module improves the efficiency of remote control without adding Gateway and network cable, and the communication range is large.

In summary, the present invention has the following beneficial effects:

(1) The wireless remote monitoring of the power distribution cabinet is realized through the remote monitoring terminal. The staff can also monitor the working status of the power distribution cabinet in real time when they are in the office or on a business trip, and have a more intuitive view of the various operating parameters of the power distribution cabinet. learn;

(2) Through the connection between the mobile phone terminal and the computer terminal and the server of the remote monitoring terminal, using the network as a medium to use mobile terminals such as mobile phones to perform remote operations on the server of the remote monitoring terminal, the information and data in the server of the remote terminal can be obtained in time. ;

(3) Through the data communication between the local network, the Internet and the NB-IOT network module, the efficiency of remote control is improved, without adding gateways and network cables, and the communication range is relatively large.

Description of drawings

Fig. 1 is the method flowchart of the remote control system of distribution cabinet of the present invention;

Fig. 2 is a connection block diagram of the remote monitoring terminal and the power distribution cabinet of the present invention.

Reference signs: 1, UPS power supply; 2, host computer; 3, display screen; 4, keyboard; 5, printer; 6, wireless switchboard; 7, power distribution cabinet; 8, power distribution cabinet server; 9, general microcomputer comprehensive protection device; 10, positioning module; step S1; step S2; step S3; step S4; step S5; step S6.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The present invention will be described in detail below in conjunction with the accompanying drawings.

Example 1

Please refer to Fig. 1 and Fig. 2, which are the flow chart of the method of the remote control system of the power distribution cabinet and the block diagram of the connection between the remote monitoring terminal and the power distribution cabinet of the present invention. As shown in the figure, the remote control system of the power distribution cabinet The control method may generally include the following steps, specifically:

Step S1: The remote monitoring terminal assigns an IP address to the power distribution cabinet server 8 through the wireless switch 6, and forms a local area network together with the office network; preferably, in this embodiment, the remote monitoring terminal can be a mobile phone terminal, a computer terminal or A combination of both.

Specifically, the mobile terminal may include an initialization module, a connection setting module, a remote connection module, a remote command generation module, a media data generation module, a media data display module, a data packaging module, a data unpacking module, and a desktop image data decompression module. Module, desktop image data display module and data buffer module, more specifically, described initialization module is the module that starts the first operation of mobile terminal in the remote monitoring terminal, is responsible for initializing the operation state of application program, obtains environment parameter, sets global variable , the connection setting module allows the user to set the connection IP address, port, authentication user name and password, etc., the remote connection module is responsible for the actual HTTP link and data sending and receiving, and the remote command generation module is responsible for generating corresponding remote control according to the information input by the remote monitoring terminal command, the media data generation module is responsible for obtaining media information such as specified text, images, audio clips, etc., and encodes the data into an octet code suitable for HTTP transmission through serialization, and the media data display module sends the media sent by the computer The information is displayed or played on the remote monitoring terminal. The data packaging module is responsible for HTTP encapsulation and encryption of the generated data, which is ready to be delivered to the remote connection module for transmission. The data unpacking module performs reverse decapsulation and Decryption, the desktop image data decompression module compresses the data according to the reverse algorithm of the image compression algorithm, and the desktop image data display module restores the desktop display on the remote monitoring terminal according to the desktop data. All kinds of data information are cached separately, so as to speed up the corresponding speed of the system when the data is used next time.

Concretely, and described computer end can comprise ups power supply 1, main frame 2, display screen 3, keyboard 4, printer 5, and described UPS power supply 1 supplies power to main frame 2, display screen 3, keyboard 4 and printer 5, thereby, The mobile terminal and the computer terminal are connected to the server of the remote monitoring terminal, and the mobile terminal such as the mobile phone is used as the medium to perform remote operation on the server of the remote monitoring terminal, so that the information and data in the server of the remote terminal can be obtained in time, and the operation is convenient and more Specifically, the power supply for charging the host computer 2, the display screen 3, the keyboard 4, and the printer 5 can also be a lithium battery. 1. The printer 5 performs uninterrupted charging, and the display screen 3 can be a liquid crystal display screen. Of course, appropriate changes can be made according to specific usage conditions, and the present invention does not make any restrictions on this.

Step S2: The local area network is connected to the Internet through the remote security communication module; preferably, in this embodiment, the remote security communication module has S-Link and WLAN technology, that is, through the remote communication module using S-Link and WLAN technology The safety communication module ensures the communication security and real-time performance of the remote monitoring process, and the staff can perform remote control locally or on a LAN, or remotely control it through the Internet in other places.

Step S3: Publish the status parameters of the power distribution cabinet server 8 to the network; preferably, in this embodiment, the status parameters are published on the network through web view publishing, specifically, the status parameters in the power distribution cabinet 7 A general microcomputer comprehensive protection device 9 is provided, and the general microcomputer comprehensive protection device 9 communicates with the power distribution cabinet server 8. The general microcomputer comprehensive protection device 9 is provided with a voltage sensor, a current sensor, a temperature sensor, a humidity sensor, a signal Conditioning circuit and A/D conversion circuit, the voltage sensor, current sensor, temperature sensor, humidity sensor, signal conditioning circuit and A/D conversion circuit are electrically connected in sequence, that is, the state parameter is the voltage in the power distribution cabinet Parameters, current parameters, temperature parameters, humidity parameters, etc., of course, according to the actual use, the type of sensor in the distribution cabinet 7 can be changed, the present invention does not limit this, by setting in the distribution cabinet 7 The universal microcomputer comprehensive protection device 9 saves the cumbersome steps of setting various meters in the power distribution cabinet 7, that is, saves a lot of space.

Step S4: The remote monitoring terminal connects to the network and receives the status parameters released by the power distribution cabinet server 8; preferably, in this embodiment, the remote monitoring terminal can be connected to the Internet through WIFI, GPRS, 2G, 3G or 4G The network, specifically, connects the local area network to the remote security communication module, and then connects to the Internet, so that remote monitoring and real-time maintenance of the power distribution cabinet 7 can be performed anytime and anywhere through WIFI, GPRS, 2G, 3G or 4G Internet access.

Step S5: The remote monitoring terminal issues a command to adjust the status parameters of the power distribution cabinet server 8; that is, the remote monitoring terminal can issue commands such as voltage adjustment and current adjustment to the power distribution cabinet 7, so that the power distribution cabinet server 8 Controlling the adjustment of voltage and current in the power distribution cabinet 7 is fast and efficient.

Step S6: the power distribution cabinet server 8 controls and adjusts the operating state of the power distribution cabinet 7 .

During specific implementation, the wireless switch 6 is used to assign an IP address to each power distribution cabinet server 8, and together with the office network to form a local area network, all operation screens and processes on the HMI (human-machine interface) of each power distribution cabinet server Data, parameters, etc. are written through a specific program and published on the network in the form of web view publish (Wwb view publish), so that as long as the staff opens the remote monitoring terminal in any area covered by the LAN, they can input any With the IP address of the server 8 of the distribution cabinet, you can see all the real-time data that the distribution cabinet 7 is running, just like being on site, which is very convenient and practical. Of course, you can also connect the LAN to the security communication module, and then connect to the Internet, and you can perform remote monitoring and real-time maintenance of the power distribution cabinet 7 anytime and anywhere through WIFI, GPRS, 2G, 3G or 4G. The remote security communication module The use of S-Link security encryption protocol solves the problem of security and integrity of remote data transmission through the Internet in automation, and uses virtual local area network WLAN technology to achieve real-time data transmission.

Example 2

Please continue to refer to Figure 1 and Figure 2, the present invention also provides another embodiment, which is different from the previous embodiment in that the remote monitoring terminal can also be provided with a Bluetooth ad hoc network, and the power distribution cabinet The server 8 can also be provided with an NB-IOT network module, the Bluetooth ad hoc network and the NB-IOT network module are respectively connected to the Internet for communication, and the Bluetooth ad hoc network controls the NB-IOT network module through the Internet, thereby realizing the remote monitoring terminal pairing The real-time remote control of the power distribution cabinet 7, specifically, when the remote monitoring terminal receives the remote control command sent by the staff, it performs a Bluetooth connection to the power distribution cabinet server 8 according to the local Bluetooth, wherein the remote monitoring terminal can be a mobile phone, a computer , tablet or smart wearable device, preferably, the remote control instruction can be transmitted by means of voice signal, button signal or wireless signal, and when the remote monitoring terminal determines that the Bluetooth connection with the power distribution cabinet server 8 is successful, the remote control instruction can directly Monitor or control any node in the power distribution cabinet server 8. When the remote monitoring terminal determines that the Bluetooth connection with the power distribution cabinet server 8 is unsuccessful, the remote monitoring terminal communicates with the Internet according to the local network, and after the communication connection, the The remote control command is sent to the Internet, and when the Internet receives the remote control command, it sends the remote control command to the NB-IOT network module, so that the NB-IOT network module can monitor or control any node according to the Bluetooth ad hoc network; that is, When the distance between the remote monitoring terminal and the power distribution cabinet server 8 is far away, the Bluetooth connection between the remote monitoring terminal and the power distribution cabinet server 8 cannot be performed. Therefore, in this embodiment, the NB-IOT network module can be used to , in order to carry out the interconnection and intercommunication of the Bluetooth ad hoc network and the Internet.

Among them, through the combined communication method of Bluetooth ad hoc network and NB-IOT network module network technology, the local Bluetooth ad hoc network and the Internet are interconnected and interoperable, which is more practical and provides the efficiency of remote control without adding gateways and network cables. , and the communication range is large.

The remote control system of the power distribution cabinet of the present invention can also be provided with a GPS positioning module 10 in the power distribution cabinet 7, and the GPS positioning module 10 is connected to the power distribution cabinet server 8 through communication, whereby the GPS positioning module 10 can The location information of the power distribution cabinet 7 is uploaded to the remote monitoring terminal in real time through the power distribution cabinet server 8. When a fault occurs in the power distribution cabinet, the staff can quickly find the faulty power distribution cabinet according to the GPS positioning module 10, and then make timely decisions. Maintenance saves a lot of time spent looking for the distribution cabinet 7 .

Of course, preferably, in this embodiment, smoke sensors and alarm devices can also be provided in the power distribution cabinet 7, the smoke sensor is connected to the power distribution cabinet server 8 in communication, and the smoke sensor is also connected to the alarm device Communication connection, when electric burning occurs in the power distribution cabinet 7 due to a short circuit, the smoke sensor can sense the signal of the smoke, and then upload the signal to the remote monitoring terminal to prompt the staff to repair in time, specifically, to cut off the power processing, to avoid losses, and at the same time, the alarm device sends out early warning information. In this embodiment, the alarm device can be a signal light and a sound alarm. Of course, according to the actual situation, the alarm device can be appropriately changed. The present invention There is no restriction on this.

The above descriptions are only preferred implementations of the present invention, and the scope of protection of the present invention is not limited to the above examples, and all technical solutions that fall under the idea of the present invention belong to the scope of protection of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention should also be regarded as the protection scope of the present invention.

Claims (1)

1. The remote control system of the power distribution cabinet is characterized by comprising the following steps of:

step S1: the remote monitoring terminal distributes IP addresses to a power distribution cabinet server (8) through a wireless switch (6) and forms a local area network together with an office network, wherein the remote monitoring terminal comprises a mobile phone terminal, a computer terminal or a combination or intelligent wearing equipment thereof, the mobile phone terminal comprises an initialization module, a connection setting module, a remote connection module, a remote command generating module, a media data display module, a data packaging module, a data unpacking module, a desktop image data decompressing module, a desktop image data display module and a data buffering module, the initialization module is used for starting a first operation module of the mobile phone terminal in the remote monitoring terminal, initializing the operation state of an application program, acquiring environmental parameters, setting global variables, the connection setting module allows a user to set connection IP addresses, ports, verifying user names and passwords, the remote connection module is responsible for actual HTTP link and data receiving and transmitting, the remote command generating module is responsible for generating corresponding remote control commands according to information input by the remote monitoring terminal, the media data generating module is responsible for acquiring appointed texts, images and audio fragments, encoding data into eight bits suitable for HTTP transmission, the data is transmitted in a serialization mode, the data is decoded into eight bits suitable for HTTP transmission, the data is reversely transmitted by the data playing module is packed by the computer data decoding module, the data is reversely connected with the data playing module is packed by the data decoding module, the data is reversely connected with the data module is responsible for the data decoding module for the data module for carrying out decryption algorithm, the data is transmitted by the data decoding algorithm is reversely, the data is packaged and is packaged, the desktop image data display module restores desktop display on a remote monitoring terminal according to desktop data, the data buffer module respectively carries out buffer processing on various data information processed in a near-term so as to accelerate the response speed of a system when the next data is used for optimizing user experience, the computer terminal comprises a UPS power supply (1), a host (2), a display screen (3), a keyboard (4) and a printer (5), the UPS power supply (1) supplies power to the host (2), the display screen (3), the keyboard (4) and the printer (5), the mobile phone terminal and the computer terminal are connected with a server of the remote monitoring terminal, the mobile terminal is used for carrying out remote operation on the server of the remote monitoring terminal by taking a network as a medium, the data and the data in the server of the remote monitoring terminal can be acquired in time, a Bluetooth ad hoc network is further arranged in the remote monitoring terminal, the Bluetooth ad hoc network is further arranged in the power distribution cabinet, the Bluetooth ad hoc network and the NB-IOT network module are respectively connected with the Internet, when a Bluetooth control command sent by a Bluetooth operator of the remote monitoring terminal is received by the Bluetooth control terminal, the remote control terminal is directly connected with a remote control signal (8) or a wireless control signal is transmitted to a remote control terminal by adopting a remote control mode, when the remote monitoring terminal judges that the Bluetooth connection with the power distribution cabinet server (8) is unsuccessful, the remote monitoring terminal is in communication connection with the Internet according to a local network, and sends a remote control instruction to the Internet after the communication connection, and when the Internet receives the remote control instruction, the remote control instruction is sent to the NB-IOT network module, so that the NB-IOT network module monitors or controls any node according to the Bluetooth ad hoc network;

step S2: the local area network is connected to the Internet through a remote secure communication module, and the remote secure communication module is provided with an S-Link and WLAN technology;

step S3: the state parameters of the power distribution cabinet server (8) are published to the network, and the state parameters are published on the network in a webpage view publishing mode;

step S4: the remote monitoring terminal is connected with a network and receives state parameters issued by the power distribution cabinet server (8), and is connected with the network in a WIFI, GPRS, 2G, 3G or 4G internet surfing mode, so that the local area network is connected to the remote safety communication module and then connected to the Internet;

step S5: the remote monitoring terminal sends out a command to adjust the state parameters of the power distribution cabinet server (8), and the remote monitoring terminal sends out voltage adjustment and/or current adjustment to the power distribution cabinet (7) so that the power distribution cabinet server (8) controls the power distribution cabinet (7) to adjust the voltage and/or the current;

step S6: the power distribution cabinet server (8) is used for controlling and adjusting the running state of the power distribution cabinet (7), a general microcomputer comprehensive protection device (9) is arranged in the power distribution cabinet (7), the general microcomputer comprehensive protection device (9) is in communication connection with the power distribution cabinet server (8), a voltage sensor, a current sensor, a temperature sensor, a humidity sensor, a signal conditioning circuit and an A/D conversion circuit are arranged in the general microcomputer comprehensive protection device (9), and the voltage sensor, the current sensor, the temperature sensor, the humidity sensor, the signal conditioning circuit and the A/D conversion circuit are electrically connected in sequence, and the state parameters are voltage parameters, current parameters, temperature parameters and humidity parameters in the power distribution cabinet;

the power distribution cabinet (7) is internally provided with a smoke sensor and an alarm device, the smoke sensor is in communication connection with a power distribution cabinet server (8), the smoke sensor is also in communication connection with the alarm device, when electric burning occurs in the power distribution cabinet (7) due to short circuit, the smoke sensor can sense a smoke signal, the smoke signal is uploaded to a remote monitoring terminal and subjected to power-off processing, the alarm device sends out early warning information, and the alarm device comprises a signal lamp and/or an acoustic alarm;

the power distribution cabinet (7) is internally provided with a GPS positioning module (10), and the GPS positioning module (10) is in communication connection with a power distribution cabinet server (8) and uploads real-time positioning information of the power distribution cabinet (7) to a remote monitoring terminal;

an IP address is allocated to each power distribution cabinet server (8), a local area network is formed by the IP address and an office network, all operation pictures, process data and parameters on a human-computer interface of each power distribution cabinet server (8) are written through specific programs and distributed on the network in a webpage view mode, all real-time data of the power distribution cabinet (7) running can be seen just like the Internet input by a worker when a remote monitoring terminal is opened in any area covered by the local area network, or the local area network is connected to a secure communication module and then connected to the Internet, remote monitoring and real-time maintenance of the power distribution cabinet (7) can be performed at any time and any place in a WIFI, GPRS, 2G, 3G or 4G Internet mode, and the secure communication module uses an S-Link secure encryption protocol.

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