Integrated communication terminal for blind compensation of automatic communication of distribution network and working method of integrated communication terminal

Abstract

The invention belongs to the field of distribution network automation communication, and discloses an integrated communication terminal for blind compensation of distribution network automation communication and a working method thereof.The integrated communication terminal comprises a shell protection module, and a communication module set and a power distribution module are integrated in the shell protection module; the communication module group collects distribution network automation terminal data through a serial communication interface, modulates, transmits and demodulates the data through at least one of a wireless relay mode, a microwave relay mode and a Beidou satellite communication mode, and then returns the data to a distribution network automation operation and maintenance master station; the power distribution module provides commercial power and a photovoltaic input interface to supply power to the terminal. By adopting the terminal, the problem of communication interruption is effectively solved, operation and maintenance personnel remotely realize switch superposition or fault isolation, manual field processing is reduced, the operation and maintenance cost is reduced, the power supply recovery time is shortened, and the coverage of distribution network automation in a complex area and the power supply reliability are improved.

Description

Technical Field

[0001] This invention belongs to the field of distribution network automation communication technology, and particularly relates to an integrated communication terminal for blind spot compensation in distribution network automation communication and its working method. Background Technology

[0002] In the field of 10kV distribution line operation and maintenance, pole-mounted switches are core equipment for realizing segmented switching, operation control, and fault protection of distribution line sections, playing a vital role in ensuring the reliability of power supply to the distribution network. With the advancement of power grid digitalization, distribution network automation technology has been widely applied. Among these, the Feeder Terminal Unit (FTU), as a key automation component of the pole-mounted switch, establishes a communication link with the distribution network automation master station to achieve remote monitoring, data acquisition, and control operations of the pole-mounted switch's operating status, providing technical support for remote operation and maintenance of the distribution network. In this process, the communication system, as the data transmission bridge between the FTU and the master station, directly determines the effectiveness of distribution network automation and has become one of the core components of distribution network digitalization.

[0003] However, in practical applications, some 10kV distribution lines need to cover complex geographical areas such as mountainous regions. The installation location of pole-mounted switches is often limited by terrain and the coverage range of communication base stations, resulting in wireless signal blind spots. Simultaneously, mountainous areas have complex climate conditions and frequent thunderstorms, making pole-mounted switches susceptible to tripping due to lightning strikes or line faults. Because FTUs cannot establish effective communication with the distribution network automation master station in signal blind spots, maintenance personnel cannot remotely reclose switches or isolate faults, requiring on-site manual intervention. This process not only consumes significant manpower and resources but also prolongs fault handling time, leading to slow power restoration of the distribution network. This increases maintenance costs and reduces power supply reliability, becoming a major bottleneck restricting the extension of distribution network automation to mountainous areas and the comprehensive digital coverage of the power grid.

[0004] This shows that in a distribution network automation system, the FTU cannot maintain stable communication with the distribution network automation master station in areas without signal coverage. Summary of the Invention

[0005] This invention provides an integrated communication terminal for blind spot compensation in distribution network automation and its working method, in order to solve the problem that FTU cannot achieve stable communication with the distribution network automation master station in areas without signal.

[0006] To achieve the above objectives, the present invention employs the following technical content: An integrated communication terminal for blind spot compensation in distribution network automation includes a protective housing module; the protective housing module houses a communication module group and a power distribution module. The communication module group is used to collect data from distribution network automation terminals via a serial communication interface, and transmit the distribution network automation terminal data to the distribution network automation operation and maintenance master station via at least one wireless communication method; the wireless communication method includes: Wireless relay method: Serial port data is modulated into a wireless signal for point-to-point relay transmission, and after demodulation and restoration, it is transmitted back to the distribution network automation operation and maintenance master station through the mobile communication network. Microwave relay mode: Serial port data is converted into Ethernet data and modulated into microwave signals for point-to-point relay transmission. After demodulation and restoration, the data is transmitted back to the distribution network automation operation and maintenance master station through the mobile communication network. BeiDou satellite communication method: Serial port data is converted into BeiDou short message signals, which are then transmitted back to the distribution network automation operation and maintenance master station via BeiDou satellite and ground station through a private network; The power distribution module includes an AC power input interface, a photovoltaic input interface, and an output interface; the output interface of the power distribution module is connected to the communication module group.

[0007] Furthermore, the communication module group includes: A 230MHz wireless communication module, configured as an RS485 / RS232 serial port, is used to support modulation and demodulation of serial port signals and 230MHz wireless signals; A 5.8GHz microwave communication module is used to support the modulation and demodulation of Ethernet data and 5.8GHz microwave signals; The Beidou communication module has RS232 / RS485 serial ports to support the encoding and decoding of serial data and Beidou short messages.

[0008] Furthermore, The 230MHz wireless communication module can support baud rates of 9600bps and 115200bps. The wireless operating frequency band of the 5.8GHz microwave communication module is the 5.8GHz microwave band; the bandwidth is ≥100Mbps.

[0009] Furthermore, the communication module group realizes data feedback from the distribution network automation terminal in the following way: A point-to-point relay link is established using a 230MHz wireless communication module, and serial port data is transmitted to the 4G backhaul node via wireless relay. A point-to-point microwave link is established using a 5.8GHz microwave communication module, and Ethernet data is transmitted to the 4G backhaul node via microwave relay. The serial port data is transmitted back to the distribution network automation master station via satellite in the form of Beidou short messages through the Beidou communication module.

[0010] Furthermore, The power distribution module integrates a surge protection air switch; The surge protection circuit breaker includes a mains circuit breaker, a photovoltaic circuit breaker, and an output circuit breaker.

[0011] Furthermore, it also includes a backup power module connected to the communication module group; the backup power module includes a lithium iron phosphate battery with a capacity of 20Ah, capable of supporting charging and discharging in ambient temperatures ranging from -20℃ to 60℃, and a peak output power of 30W.

[0012] Furthermore, The door of the outer protective module adopts a double-layer sealing structure. The outer protective module adopts an aluminum sealed housing. The top of the aluminum sealed housing is equipped with a rain cover and an antenna slot, and the back is equipped with mounting clips for adapting to various line towers.

[0013] A method for operating an integrated communication terminal for blind spot compensation in distribution network automation includes: The communication module group is powered by a power distribution module; Data from distribution network automation terminals is collected using the serial communication interface of the communication module group, and the data is transmitted to the distribution network automation operation and maintenance master station via at least one wireless communication method; the wireless communication method includes: Wireless relay method: Serial port data is modulated into a wireless signal for point-to-point relay transmission, and after demodulation and restoration, it is transmitted back to the distribution network automation operation and maintenance master station through the mobile communication network. Microwave relay mode: Serial port data is converted into Ethernet data and modulated into microwave signals for point-to-point relay transmission. After demodulation and restoration, the data is transmitted back to the distribution network automation operation and maintenance master station through the mobile communication network. BeiDou satellite communication method: Serial port data is converted into BeiDou short message signals, which are then transmitted back to the distribution network automated operation and maintenance master station via BeiDou satellite and ground station through a dedicated network.

[0014] Furthermore, the wireless relay method can support baud rates of 9600bps and 115200bps, and the wireless signal is 230MHz.

[0015] Furthermore, in the microwave relay method, the wireless operating frequency band is the 5.8GHz microwave band; the bandwidth is ≥100Mbps.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention provides an integrated communication terminal for supplementing communication gaps in distribution network automation, comprising a protective outer casing module that integrates a communication module group and a power distribution module. The communication module group collects data from the distribution network automation terminal through a serial communication interface and transmits the data back to the distribution network automation operation and maintenance master station using at least one of wireless relay, microwave relay, and BeiDou satellite communication methods after modulation, transmission, and demodulation. The power distribution module provides mains power and photovoltaic input interfaces to power the terminal. This terminal uses a multi-mode wireless communication mechanism, including point-to-point relay or satellite backhaul to build redundant communication paths, maintaining data transmission links in mountainous areas with signal blind spots or in harsh weather conditions. Simultaneously, the power distribution module, combined with backup power support, ensures power supply stability and overcomes the effects of terrain and lightning strikes. This terminal effectively solves the communication interruption problem, enabling maintenance personnel to remotely reclose switches or isolate faults, reducing manual on-site handling, lowering maintenance costs, shortening power restoration time, and improving the coverage and reliability of distribution network automation in complex areas.

[0017] Preferably, in this invention, by explicitly configuring the 230MHz wireless communication module, the 5.8GHz microwave communication module, and the BeiDou communication module, and defining their interface capabilities—namely, RS485 / RS232 serial port support and Ethernet support—this scheme substantially constructs a heterogeneous communication system. The 230MHz module provides a conventional serial port relay channel, the microwave module provides high-speed Ethernet data transmission capability, and the BeiDou module serves as the ultimate communication guarantee when there is no terrestrial signal coverage. This modular combination ensures that, under different communication environment constraints, such as bandwidth requirements, signal coverage range, and terrain obstacles, the terminal can flexibly select the optimal or available communication method, greatly enhancing the system's adaptability and robustness in complex scenarios.

[0018] Preferably, in this invention, data is transmitted to a node with a mobile network via point-to-point wireless or microwave relay for further forwarding, or directly back via a satellite private network. This solution fully utilizes the combination of existing communication infrastructure and proprietary technologies. This explicit path design ensures that data can find a feasible relay or direct channel to reach the main station under various terrain limitations, effectively solving the data interruption problem caused by signal blind spots, and providing key technical support for realizing remote monitoring and control.

[0019] Preferably, in this invention, a surge protection circuit breaker is integrated into the power distribution module, significantly improving the electrical safety protection level of the terminal equipment in mountainous areas prone to thunderstorms. This design can effectively absorb and isolate instantaneous overvoltages or surge currents from the power input terminal, such as those induced by lightning strikes, preventing these impacts from damaging the internal precision communication and power supply modules. This greatly reduces the risk of equipment failure due to severe weather, ensuring the long-term stable operation and reliability of the terminal under complex climatic conditions.

[0020] Preferably, in this invention, a backup power module of a specific type and performance provides robust power backup support for the entire communication terminal. This battery possesses wide temperature range adaptability and sufficient power output capability, ensuring the communication module group can continue operating for a sufficient period even when both external mains power and photovoltaic power are interrupted, or in the event of extreme environmental temperature changes. This provides a solid guarantee for maintaining the uninterrupted operation of critical communication links during periods of high failure incidence, such as thunderstorms, and is an important technical measure to ensure timely reporting of fault information or receipt of master station commands during power outages.

[0021] Preferably, in this invention, for complex mountainous climate environments, the outer casing protection module adopts an aluminum sealed shell, double-layer sealed doors, a top rain shelter, and a multi-functional mounting clip on the back, providing comprehensive physical protection and ease of installation. The sealing and rain-proof design effectively prevents rainwater, moisture, and dust from entering the internal equipment, ensuring the safety of internal components in humid and rainy environments; the robust material and top antenna mount protect the communication antenna; and the diverse mounting clips allow the terminal to quickly and securely adapt to different types of line towers, simplifying deployment in complex terrain areas and improving the overall equipment's adaptability and durability in outdoor environments.

[0022] This invention also provides a working method for an integrated communication terminal used for communication gap filling in distribution network automation. Based on the aforementioned integrated communication terminal for communication gap filling in distribution network automation, this method supplies power to the communication module group through the power distribution module, collects data from the power distribution terminal using a serial communication interface, and transmits data using at least one of the following methods: wireless relay, microwave relay, or BeiDou satellite communication. Wireless / microwave relay achieves data relay forwarding to the mobile network through point-to-point modulation and demodulation; the BeiDou method converts data into short messages and transmits them back to the master station via satellite and dedicated network. This method constructs multiple heterogeneous communication links—when terrain or weather blocks conventional mobile signals, point-to-point relay can establish short-range relay channels across local blind spots, while BeiDou communication completely avoids dependence on ground base stations, forming a data backhaul path with full coverage. Combined with dual power supply, it ensures continuous operation in harsh environments. This solves the communication interruption problem caused by signal blind spots in mountainous areas, enabling the operation and maintenance master station to remotely receive fault information and perform remote control operations, avoiding manual on-site handling, significantly shortening fault isolation and power restoration time, improving power supply reliability in complex areas, reducing operation and maintenance costs, and promoting comprehensive coverage of distribution network automation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an integrated communication terminal for blind spot compensation in distribution network automation, provided in an embodiment of the present invention. Figure 2 A schematic diagram of the FTU blind spot compensation principle of the 230MHz wireless transmission module provided in this embodiment of the invention; Figure 3A schematic diagram of the FTU blind spot compensation principle for a 5.8G microwave module provided in an embodiment of the present invention; Figure 4 The diagram below illustrates the FTU blind spot compensation principle of the BeiDou communication module provided in this embodiment of the invention. Detailed Implementation

[0024] To make the technical problems solved by the present invention, the technical solutions, and the beneficial effects clearer, the following specific embodiments provide a further detailed description of the present invention. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of the invention.

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] As mentioned in the background section, some power distribution lines are located in mountainous areas, where pole-mounted switches are situated in signal blind spots due to terrain and the location of communication base stations. Because of the unpredictable weather and frequent thunderstorms in mountainous areas, these pole-mounted switches are frequently affected and trip. Since they are in signal blind spots, remote control is impossible, and each trip requires a lengthy on-site investigation, causing significant disruption to power distribution maintenance and posing a major obstacle to the digitalization of the power grid.

[0029] To address the aforementioned issues, this embodiment provides an integrated communication terminal for blind spot coverage in distribution network automation. It collects FTU messages via microwave relay, wireless relay, or BeiDou communication and transmits them to the distribution network automation master station. This terminal leverages the high performance and long-distance capabilities of wireless transmission, avoiding the need for fiber optic infrastructure in mountainous areas, and enables the distribution network automation master station to enable pole-mounted switches.

[0030] like Figure 1As shown, this embodiment provides an integrated communication terminal for supplementing communication gaps in distribution network automation, including a protective housing module; the protective housing module houses a communication module group and a power distribution module; the communication module group is used to collect distribution network automation terminal data through a serial communication interface and transmit the distribution network automation terminal data to the distribution network automation operation and maintenance master station through at least one wireless communication method; the wireless communication method includes: Wireless relay method: Serial port data is modulated into a wireless signal for point-to-point relay transmission, and after demodulation and restoration, it is transmitted back to the distribution network automation operation and maintenance master station through the mobile communication network. Microwave relay mode: Serial port data is converted into Ethernet data and modulated into microwave signals for point-to-point relay transmission. After demodulation and restoration, the data is transmitted back to the distribution network automation operation and maintenance master station through the mobile communication network. BeiDou satellite communication method: Serial port data is converted into BeiDou short message signals, which are then transmitted back to the distribution network automation operation and maintenance master station via BeiDou satellite and ground station through a private network; The power distribution module includes an AC power input interface, a photovoltaic input interface, and an output interface; the output interface of the power distribution module is connected to the communication module group.

[0031] The integrated communication terminal for blind spot compensation in distribution network automation provided in this embodiment will be further described below with reference to the accompanying drawings and specific application examples: This embodiment discloses an integrated communication terminal for supplementing communication gaps in distribution network automation. The terminal includes a protective housing module, which internally houses a communication module group, a backup power module, and a power distribution module. The communication module group can collect data from the distribution network automation terminal via a serial communication interface and transmit the collected data to the distribution network automation operation and maintenance master station via at least one wireless communication method. The power distribution module has a mains power input interface, a photovoltaic input interface, and an output interface. The output interface of the power distribution module is connected to the communication module group, providing power to the communication module group.

[0032] The communication module group specifically includes a 230MHz wireless communication module, a 5.8GHz microwave communication module, and a Beidou communication module.

[0033] like Figure 2 As shown in this embodiment, the 230MHz wireless communication module is equipped with RS485 and RS232 serial ports, which can support two common baud rates and realize modulation and demodulation between the serial wired signal and the 230MHz wireless signal.

[0034] like Figure 3As shown, in this embodiment, the 5.8GHz microwave communication module has an RJ45 network port, which can support modulation and demodulation between Ethernet data and 5.8GHz microwave signals. The module operates in the corresponding microwave frequency band and has the characteristics of high bandwidth and low latency.

[0035] like Figure 4 As shown in this embodiment, the Beidou communication module is equipped with RS232 and RS485 serial ports, which can realize the encoding and decoding processing between serial port data and Beidou short messages.

[0036] For example, the communication module group implements data backhaul from the distribution network automation terminal in three ways: The first is a wireless relay method, where the 230MHz wireless communication module reads automation data from the distribution network automation terminal through its own serial port, modulates the electrical signal into a wireless signal of the corresponding frequency band, and sends it to the same type of wireless communication module at the other end. After receiving the wireless data, the module at the other end demodulates and restores it to serial port data, and then transmits the serial port data to the mobile communication module, which then uploads the data to the distribution network automation operation and maintenance master station; The second is a microwave relay method, where the serial port data of the distribution network automation terminal is first converted into Ethernet data by a serial port conversion module and then transmitted to the 5.8GHz microwave communication... The first communication method uses three approaches: 1) a communication module that modulates electrical signals into microwave signals of the corresponding frequency band and sends them to a similar microwave module at the other end. The receiving module demodulates the microwave signal back into Ethernet data, which is then converted into serial data by a serial port conversion module and transmitted to the mobile communication module. Finally, the mobile communication module uploads the data to the distribution network automation master station. 2) A third method uses BeiDou satellite communication. The BeiDou communication module connects to the distribution network automation terminal via its serial port and reads the data. It then converts the serial data into BeiDou short message data and uploads it to the BeiDou satellite. The BeiDou satellite sends the message to the BeiDou ground station, which then transmits the message back to the distribution network automation master station via a dedicated network channel. These three communication methods can respectively meet the blind spot compensation needs in short-distance, medium-distance, and long-distance scenarios. The high bandwidth and low latency characteristics of the communication module group can meet the bandwidth and latency requirements between the distribution network automation equipment and the master station. Furthermore, the communication module group is equipped with multiple interfaces, supporting Ethernet, ModBus, power protocols, and other protocols, making it compatible with various distribution network automation equipment.

[0037] Explained, the power distribution module is responsible for distributing electrical energy. It integrates surge protection circuit breakers, specifically including mains circuit breakers, photovoltaic circuit breakers, and output circuit breakers, all with surge protection capabilities. In terms of power supply strategy, mains power is prioritized in scenarios with low-voltage lines, while photovoltaic power is used in environments without mains power, thus achieving complementarity among multiple power supply methods.

[0038] The backup power module is connected to the communication module group and uses a lithium iron phosphate battery as the energy storage unit to meet the continuous backup power needs of the wireless communication module in the event of a power outage. The lithium iron phosphate battery has a capacity of 20Ah, which can meet the backup power needs of the wireless communication module for 24 hours in the event of a power outage. The module supports both 12V and 24V outputs and supports peak output power consumption up to 30W. The module supports both AC mains charging and photovoltaic charging. Both the module's input and output have surge protection functions, and it can support charging and discharging at temperatures ranging from -20℃ to 60℃. It has float charging capabilities and overvoltage and overcurrent protection, enhancing its stability and safety. Therefore, the backup power module supports two different voltage outputs, achieving high peak output power consumption, and supports both AC mains charging and photovoltaic charging. The backup power module's input and output terminals are equipped with surge protection functions, enabling charging and discharging operations within a wide temperature range. It also features float charging capabilities and overvoltage and overcurrent protection mechanisms, effectively improving the stability and safety of the module's operation.

[0039] The protective casing module serves both as a fixed support and a rainproof element. Its aluminum casing can withstand the strong corrosive effects of high temperature and humidity outdoors. The door features a double-layered structure, facilitating maintenance and effectively preventing moisture and rodents from entering the module. The back of the protective casing module has mounting clips that match various types of power distribution line towers. The top of the module is equipped with a rain shelter and an antenna mount for mounting different types of antennas. This terminal can operate stably over a wide temperature range and features multiple protections including input / output surge protection, overvoltage and overcurrent protection, effectively solving the monitoring problem of power distribution lines in areas without public network signal.

[0040] Based on the aforementioned integrated communication terminal for supplementing communication gaps in distribution network automation, this embodiment also provides a method for operating the integrated communication terminal for supplementing communication gaps in distribution network automation. The method specifically includes: firstly, providing power to the communication module group through the power distribution module. The power distribution module can select between mains power supply or photovoltaic power supply according to the actual scenario, and achieves safe power distribution by means of its integrated surge protection circuit breaker; then, collecting distribution network automation terminal data through the serial communication interface of the communication module group, and transmitting the collected distribution network automation terminal data to the distribution network automation operation and maintenance master station through at least one wireless communication method. The wireless communication methods specifically include: wireless relay, which modulates serial data into a wireless signal of the corresponding frequency band for point-to-point relay transmission, and after demodulation and restoration, transmits it back to the distribution network automation operation and maintenance master station via a mobile communication network; microwave relay, which converts serial data into Ethernet data and modulates it into a microwave signal of the corresponding frequency band for point-to-point relay transmission, and after demodulation and restoration, transmits it back to the distribution network automation operation and maintenance master station via a mobile communication network; and BeiDou satellite communication, which converts serial data into BeiDou short message signals and transmits them back to the distribution network automation master station via a dedicated network through BeiDou satellites and ground stations. In the wireless relay method, the communication module group can support two different baud rates, and the modulated wireless signal is in the corresponding frequency band; in the microwave relay method, the wireless operating frequency band is the corresponding microwave frequency band, and it has a high bandwidth, which can meet the needs of distribution network automation equipment for "three remote" and "four remote" monitoring, as well as future higher-level monitoring.

[0041] In summary, the integrated communication terminal and method for blind spot compensation in distribution network automation provided by this invention have the following advantages compared with existing communication methods: This terminal, through its integrated design, combines a multi-communication module group supporting wireless relay, microwave relay, and BeiDou satellite communication, along with a power distribution module with dual inputs of mains power and photovoltaic power, all within a protective housing, forming a complete communication gap-filling terminal system for mountainous areas. Its principle lies in using point-to-point relay technology (wireless / microwave) to construct short-range relay links to bypass local signal blind spots. Simultaneously, it leverages BeiDou satellite communication to completely eliminate reliance on ground base stations, forming a data backhaul channel with full coverage. Combined with dual power supply and surge protection, it ensures continuous and stable operation in complex environments. This terminal effectively overcomes the damage to communication links caused by mountainous terrain, signal blind spots, and thunderstorms. It enables the distribution network automation master station to reliably receive terminal data and remotely execute switch control commands even when traditional mobile networks fail, significantly reducing the need for manual on-site handling, shortening fault isolation and power restoration time, lowering maintenance costs, and comprehensively improving the automation coverage and power supply reliability of the distribution network in complex geographical areas.

[0042] The above embodiments are merely one of the implementation methods for achieving the technical solution of the present invention. The scope of protection claimed by the present invention is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention.

Claims

1. An integrated communication terminal for blind spot compensation in distribution network automation, characterized in that, Includes an outer casing protection module; the outer casing protection module is equipped with a communication module group and a power distribution module; The communication module group is used to collect data from distribution network automation terminals via a serial communication interface, and transmit the distribution network automation terminal data to the distribution network automation operation and maintenance master station via at least one wireless communication method; the wireless communication method includes: Wireless relay method: Serial port data is modulated into a wireless signal for point-to-point relay transmission, and after demodulation and restoration, it is transmitted back to the distribution network automation operation and maintenance master station through the mobile communication network. Microwave relay mode: Serial port data is converted into Ethernet data and modulated into microwave signals for point-to-point relay transmission. After demodulation and restoration, the data is transmitted back to the distribution network automation operation and maintenance master station through the mobile communication network. BeiDou satellite communication method: Serial port data is converted into BeiDou short message signals, which are then transmitted back to the distribution network automation operation and maintenance master station via BeiDou satellite and ground station through a private network; The power distribution module includes an AC power input interface, a photovoltaic input interface, and an output interface; the output interface of the power distribution module is connected to the communication module group.

2. The integrated communication terminal for blind spot compensation in distribution network automation according to claim 1, characterized in that, The communication module group includes: A 230MHz wireless communication module, configured as an RS485 / RS232 serial port, is used to support modulation and demodulation of serial port signals and 230MHz wireless signals; A 5.8GHz microwave communication module is used to support the modulation and demodulation of Ethernet data and 5.8GHz microwave signals; The Beidou communication module has RS232 / RS485 serial ports to support the encoding and decoding of serial data and Beidou short messages.

3. An integrated communication terminal for blind spot compensation in distribution network automation according to claim 2, characterized in that, The 230MHz wireless communication module can support baud rates of 9600bps and 115200bps. The wireless operating frequency band of the 5.8GHz microwave communication module is the 5.8GHz microwave band; the bandwidth is ≥100Mbps.

4. An integrated communication terminal for blind spot compensation in distribution network automation according to claim 2, characterized in that, The communication module group achieves data feedback from the distribution network automation terminal in the following ways: A point-to-point relay link is established using a 230MHz wireless communication module, and serial port data is transmitted to the 4G backhaul node via wireless relay. A point-to-point microwave link is established using a 5.8GHz microwave communication module, and Ethernet data is transmitted to the 4G backhaul node via microwave relay. The serial port data is transmitted back to the distribution network automation master station via satellite in the form of Beidou short messages through the Beidou communication module.

5. An integrated communication terminal for blind spot compensation in distribution network automation according to claim 1, characterized in that, The power distribution module integrates a surge protection air switch; The surge protection circuit breaker includes a mains circuit breaker, a photovoltaic circuit breaker, and an output circuit breaker.

6. An integrated communication terminal for blind spot compensation in distribution network automation according to claim 1, characterized in that, It also includes a backup power module connected to the communication module group; the backup power module includes a lithium iron phosphate battery with a capacity of 20Ah, which can support charging and discharging in an ambient temperature range of -20℃ to 60℃, and has a peak output power of 30W.

7. An integrated communication terminal for blind spot compensation in distribution network automation according to claim 1, characterized in that, The door of the outer protective module adopts a double-layer sealing structure. The outer protective module adopts an aluminum sealed housing. The top of the aluminum sealed housing is equipped with a rain cover and an antenna slot, and the back is equipped with mounting clips for adapting to various line towers.

8. A method for operating an integrated communication terminal for blind spot compensation in distribution network automation, based on the integrated communication terminal for blind spot compensation in distribution network automation as described in any one of claims 1-7, characterized in that, include: The communication module group is powered by a power distribution module; Data from distribution network automation terminals is collected using the serial communication interface of the communication module group, and the data is transmitted to the distribution network automation operation and maintenance master station via at least one wireless communication method; the wireless communication method includes: Wireless relay method: Serial port data is modulated into a wireless signal for point-to-point relay transmission, and after demodulation and restoration, it is transmitted back to the distribution network automation operation and maintenance master station through the mobile communication network. Microwave relay mode: Serial port data is converted into Ethernet data and modulated into microwave signals for point-to-point relay transmission. After demodulation and restoration, the data is transmitted back to the distribution network automation operation and maintenance master station through the mobile communication network. BeiDou satellite communication method: Serial port data is converted into BeiDou short message signals, which are then transmitted back to the distribution network automated operation and maintenance master station via BeiDou satellite and ground station through a dedicated network.

9. The working method of an integrated communication terminal for blind spot compensation in distribution network automation according to claim 8, characterized in that, The wireless relay method supports baud rates of 9600bps and 115200bps, and the wireless signal is 230MHz.

10. The working method of an integrated communication terminal for blind spot compensation in distribution network automation according to claim 8, characterized in that, In the microwave relay method, the wireless operating frequency band is the 5.8GHz microwave band; the bandwidth is ≥100Mbps.

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