Mobile power supply vehicle low-voltage distribution load access device and method

Abstract

The invention relates to the technical field of mobile power supply vehicle power supply, in particular to a mobile power supply vehicle low-voltage power distribution load access device and method.The device comprises a mobile power supply vehicle, a first-level power distribution module, a plurality of second-level power distribution modules, a plurality of third-level power distribution modules and a PC end, electric energy output by the mobile power supply vehicle is reasonably distributed to the secondary power distribution module, and electric power distribution is carried out according to the power size and the importance degree of the secondary power distribution module; the second-stage power distribution module is used for distributing the electric energy output by the first-stage power distribution module to the third-stage power distribution modules to meet the requirement for simultaneous power supply of the multiple third-stage power distribution modules, and meanwhile, power distribution is carried out according to the power magnitude and the importance degree of the third-stage power distribution modules; by designing the three-stage power distribution module, the requirement that the high-power mobile power supply vehicle can supply power to a plurality of user sides at the same time is met, the power supply range of the high-power mobile power supply vehicle is widened, and the supply protection capacity of the mobile power supply vehicle is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply for mobile power vehicles, and in particular to a low-voltage power distribution load access device and method for a mobile power vehicle. Background Art

[0002] At present, the power source of the mobile power supply vehicle system in the market is mainly the generator, and the fuel of the generator is diesel or gasoline, and it is equipped with an oil storage tank, and the noise of the general engine unit when working is about 110dB. In order to reduce noise, the power supply vehicle system in the market has taken measures such as adding mufflers, anti-noise devices, adding sound-absorbing cotton to the side panels of the car box, or adding sealing strips to the car box doors and windows, which is complicated; and the built-in national standard DC charging pile converts the 380V AC output of the generator set into 200V-750V DC to meet the charging of electric vehicles on the market. The system's working efficiency is relatively low and the energy consumption is large; finally, most of the existing mobile power supply vehicle operation control systems use mechanical or electrical switch types to operate the corresponding functions, and it is impossible or inconvenient to control the working technical parameters in the system in real time.

[0003] In summary, how to restore emergency power supply on site with high quality in the shortest time has become a necessary practical pursuit. At present, the commonly used means in the existing technology are power facility repair and mobile power supply mode. A mobile power supply vehicle can only supply power to one power repair facility. However, there are many problems such as small number of power distribution levels, inability to match multiple load points, and inability to meet the temporary power needs of the masses (such as mobile phone charging, temporary heating, etc.), and it is easy to cause waste of resources. Summary of the invention

[0004] The present invention provides a low-voltage power distribution load access device and method for a mobile power vehicle, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problem that the existing low-voltage power distribution device of the mobile power vehicle has a small number of power distribution levels and cannot match multiple user load points.

[0005] To solve the above problems, one of the technical solutions of the present invention is implemented in the following way: a mobile power vehicle low-voltage distribution load access device, including a mobile power vehicle, a primary distribution module, multiple secondary distribution modules, multiple tertiary distribution modules and a PC terminal, wherein: The primary power distribution module is connected to the mobile power vehicle, and the power output of the mobile power vehicle is reasonably distributed to the secondary power distribution module, and the power is distributed according to the power size and importance of the secondary power distribution module; The secondary power distribution module is used to distribute the power output by the primary power distribution module to the tertiary power distribution module, meeting the demand for simultaneous power supply of multiple tertiary power distribution modules, and distributing power according to the power size and importance of the tertiary power distribution module; The third-level power distribution module is mainly used to reasonably distribute the power output by the second-level power distribution module to the power-consuming equipment, so as to meet the requirements of power supply to multiple equipment at the same time, and to distribute power according to the power size and importance of the power-consuming equipment; The PC end is mainly responsible for monitoring and controlling the information status of each line in the primary distribution module, the secondary distribution module and the tertiary distribution module, mastering the operating power consumption status of each branch, and completing the remote switching and power distribution of the user end according to the user end connected to the primary distribution module, the secondary distribution module and the tertiary distribution module.

[0006] The above-mentioned primary power distribution module includes a master control unit, a first sensor unit and a first low-voltage circuit breaker, wherein: The first low-voltage circuit breaker is connected to the first sensor unit, and is connected to the mobile power supply vehicle and the secondary power distribution module through a socket, and is used for switching the primary power distribution module and the secondary power distribution module; The first sensing unit obtains the operation information of the first low-voltage circuit breaker, uploads the operation information to the main control unit, and receives the remote control command issued by the main control unit to control the remote opening and closing of the first low-voltage circuit breaker; wherein the operation information of the first low-voltage circuit breaker includes voltage and current information and opening and closing position information; The master control unit is used to receive the operation information output by the first sensor unit and upload it to the PC. At the same time, the master control unit receives the remote control command issued by the PC and outputs it to the first sensor unit.

[0007] The above-mentioned secondary power distribution module includes a main control unit, a second sensor unit, and a second low-voltage circuit breaker, wherein: The second low-voltage circuit breaker is connected to the second sensor unit and is connected to the three-level power distribution module through a socket, and is used for switching between the secondary power distribution module and the tertiary power distribution module; The second sensing unit obtains the operation information of the second low-voltage circuit breaker, uploads the operation information to the main control unit, and receives the remote control command issued by the main control unit to control the remote opening and closing of the second low-voltage circuit breaker; The main control unit is used to receive the operating information output by the second sensor unit and upload it to the primary power distribution module, which then uploads it to the PC. At the same time, the main control unit receives the remote control command issued by the PC via the primary power distribution module and outputs it to the second sensor unit.

[0008] The above-mentioned three-level power distribution module includes a third sensor unit and a third low-voltage circuit breaker, wherein: The third low-voltage circuit breaker is connected to the third sensor unit and is connected to the user through the socket, and is used for switching between the three-level power distribution module and the user; The third sensing unit obtains the operating information of the third low-voltage circuit breaker and sends the operating information to the secondary power distribution module, which outputs the operating information to the PC end via the primary power distribution module, and receives the remote control commands issued by the PC end via the primary power distribution module and the secondary power distribution module to control the remote opening and closing of the third low-voltage circuit breaker.

[0009] The first low-voltage circuit breaker of the above-mentioned first-level distribution module is connected to the second low-voltage circuit breaker of the mobile power vehicle and the second-level distribution module through a cable; the second low-voltage circuit breaker of the second-level distribution module is connected to the third low-voltage circuit breaker of the tertiary distribution module through a cable; the third low-voltage circuit breaker of the tertiary distribution module is connected to the user end through a cable; the PC end is connected to the main control unit of the first-level distribution module through the FT3 communication line, the main control unit is connected to the first sensor unit and the main control unit through the FT3 communication line, and the main control unit is connected to the second sensor unit and the third sensor unit through the FT3 communication line.

[0010] The above-mentioned PC terminal includes an online monitoring module and a server. The online monitoring module is used to monitor the operating status of the primary distribution module, the secondary distribution module and the tertiary distribution module in real time. When a related branch fault is detected, a remote control tripping command is remotely issued to cut off the faulty branch. The server has data analysis and storage functions and can perform topology calculations for the primary distribution module, the secondary distribution module and the tertiary distribution module.

[0011] The second technical solution of the present invention is achieved by the following method: a method for connecting a low-voltage distribution load to a mobile power supply vehicle, comprising the following steps: Connect the primary power distribution module, multiple secondary power distribution modules, and multiple tertiary power distribution modules in sequence, and then connect the primary power distribution module to the mobile power supply of the mobile power supply vehicle and the PC end respectively; Connect the three-level power distribution module to the user end to supply power to the user end; The power distribution modules at all levels obtain the operation data of the user end in real time and output it to the PC end; the operation data includes voltage, current, and opening and closing position status signals; The PC side determines whether the user side is faulty in real time based on the received operation data; In response, the PC sends a remote control trip command to remove the faulty branch.

[0012] The above-mentioned power distribution modules at all levels obtain the operating data of the user end in real time and output it to the PC end, including: The first sensor unit in the primary power distribution module obtains the voltage, current and opening / closing position signal of the first low-voltage circuit breaker, and outputs it to the main control unit, which then outputs it to the PC end; The second sensor unit in the secondary power distribution module obtains the voltage, current and opening / closing position signal of the second low-voltage circuit breaker and outputs it to the main control unit, which then outputs it to the PC via the main control unit. The third sensor unit in the three-level power distribution module obtains the voltage, current and opening and closing position signals of the third low-voltage circuit breaker, and outputs them to the main control unit, which then outputs them to the PC via the main control unit.

[0013] The present invention realizes the requirement that a high-power mobile power supply vehicle can supply power to multiple user terminals at the same time by designing a three-level power distribution module, increases the power supply range of the high-power mobile power supply vehicle, and effectively improves the power supply capability of the mobile power supply vehicle.

[0014] Furthermore, the present invention realizes the monitoring and control of all low-voltage circuit breakers in the three-level distribution module of the mobile power vehicle through the cooperation of the PC terminal, the general control unit, the main control unit and multiple sensor units. While improving the power supply capability of the mobile power vehicle, it can conveniently realize the automatic removal of user loads at each power supply point, effectively improving the power supply safety and reliability of the mobile power vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0016] Figure 1 This is an overall block diagram of the circuit connection of Example 1 of the present invention.

[0017] Figure 2 This is a circuit connection diagram of Example 1 of the present invention.

[0018] Figure 3 This is a flow chart of the method of embodiment 2 of the present invention.

[0019] Figure 4 This is a circuit connection diagram of Example 3 of the present invention. DETAILED DESCRIPTION

[0020] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0021] Example 1: Figure 1-2 As shown, an embodiment of the present invention discloses a low-voltage power distribution load access device for a mobile power vehicle, including a mobile power vehicle, a primary power distribution module, multiple secondary power distribution modules, multiple tertiary power distribution modules and a PC terminal, wherein: The primary power distribution module is connected to the mobile power vehicle, and the power output of the mobile power vehicle is reasonably distributed to the secondary power distribution module, and the power is distributed according to the power size and importance of the secondary power distribution module; The secondary power distribution module is used to distribute the power output by the primary power distribution module to the tertiary power distribution module, meeting the demand for simultaneous power supply of multiple tertiary power distribution modules, and distributing power according to the power size and importance of the tertiary power distribution module; The third-level power distribution module is mainly used to reasonably distribute the power output by the second-level power distribution module to the power-consuming equipment, so as to meet the requirements of power supply to multiple equipment at the same time, and to distribute power according to the power size and importance of the power-consuming equipment; The PC end is mainly responsible for monitoring and controlling the information status of each line in the primary distribution module, the secondary distribution module and the tertiary distribution module, mastering the operating power consumption status of each branch, and completing the remote switching and power distribution of the user end according to the user end connected to the primary distribution module, the secondary distribution module and the tertiary distribution module.

[0022] The above-mentioned primary distribution module can reasonably distribute the electric energy output by the mobile power vehicle to the secondary distribution module, which can meet the requirements of simultaneous power supply of multiple secondary distribution modules. It can also carry out targeted power distribution according to the power size and importance of the secondary distribution module to ensure that key equipment has priority in obtaining stable power supply.

[0023] The above-mentioned secondary power distribution module is used to reasonably distribute the electric energy output by the primary power distribution module to the tertiary power distribution module, so as to meet the requirements of simultaneous power supply of multiple tertiary power distribution modules, and can carry out targeted power distribution according to the power size and importance of the tertiary power distribution module to ensure that key equipment has priority in obtaining stable power supply.

[0024] The above-mentioned three-level distribution module is used to reasonably distribute the electric energy output by the second-level distribution module to the user end, meet the requirements of simultaneous power supply to multiple user ends, and carry out targeted power distribution according to the power size and importance of the electrical equipment to ensure that key equipment has priority in obtaining stable power supply.

[0025] The primary power distribution module includes a master control unit, a first sensor unit and a first low-voltage circuit breaker, wherein the first low-voltage circuit breaker is connected to the first sensor unit, and is connected to the mobile power vehicle and the secondary power distribution module through a socket, and is used for switching the primary power distribution module and the secondary power distribution module; The first sensing unit obtains the operation information of the first low-voltage circuit breaker, uploads the operation information to the main control unit, and receives the remote control command issued by the main control unit to control the remote opening and closing of the first low-voltage circuit breaker; wherein the operation information of the first low-voltage circuit breaker includes voltage and current information and opening and closing position information; The master control unit is used to receive the operation information output by the first sensor unit and upload it to the PC. At the same time, the master control unit receives the remote control command issued by the PC and outputs it to the first sensor unit.

[0026] The above-mentioned first low-voltage circuit breaker communicates with the first sensor unit via RS485. The first sensor unit obtains the voltage and current information and the opening and closing position information of the first low-voltage circuit breaker, and sends all the information to the main control unit via FT3 communication. The main control unit then uploads it to the PC. The PC can issue remote control commands through the main control unit and the first sensor unit to realize remote opening and closing of the low-voltage circuit breaker and complete the switching of related branches and load distribution within the primary distribution module.

[0027] The secondary power distribution module includes a main control unit, a second sensor unit, and a second low-voltage circuit breaker, wherein the second low-voltage circuit breaker is connected to the second sensor unit and is connected to the tertiary power distribution module through a socket, and is used for switching between the secondary power distribution module and the tertiary power distribution module; The second sensing unit obtains the operation information of the second low-voltage circuit breaker, uploads the operation information to the main control unit, and receives the remote control command issued by the main control unit to control the remote opening and closing of the second low-voltage circuit breaker; The main control unit is used to receive the operating information output by the second sensor unit and upload it to the primary power distribution module, which then uploads it to the PC. At the same time, the main control unit receives the remote control command issued by the PC via the primary power distribution module and outputs it to the second sensor unit.

[0028] The second low-voltage circuit breaker communicates with the second sensor unit via RS485. The second sensor unit obtains the voltage and current information and the opening and closing position information of the second low-voltage circuit breaker, and sends all the information to the main control unit via FT3 communication. The main control unit then sends the information to the general control unit, which then uploads it to the PC. The PC sends remote control commands via the general control unit, the main air unit and the second sensor unit to realize remote opening and closing of the second low-voltage circuit breaker and complete the switching of related branches and load distribution within the secondary power distribution module.

[0029] The three-level power distribution module includes a third sensor unit and a third low-voltage circuit breaker, wherein the third low-voltage circuit breaker is connected to the third sensor unit and is connected to the user through a socket, and is used for switching between the three-level power distribution module and the user; The third sensing unit obtains the operating information of the third low-voltage circuit breaker and sends the operating information to the secondary power distribution module, which outputs the operating information to the PC end via the primary power distribution module, and receives the remote control commands issued by the PC end via the primary power distribution module and the secondary power distribution module to control the remote opening and closing of the third low-voltage circuit breaker.

[0030] The above-mentioned third sensing unit obtains the voltage and current information and the opening and closing position information of the third low-voltage circuit breaker, and sends all the information to the main control unit in the secondary distribution module in FT3 communication mode, and then the main control unit in the secondary distribution module sends the information to the main control unit of the primary distribution module. The main control unit uploads the data to the PC end, and the PC end can issue remote control commands through the main control unit, the main control unit and the third sensing unit to realize the remote opening and closing of the third low-voltage circuit breaker, and complete the switching of related branches and the distribution of power load within the three-level distribution module.

[0031] Among them, the PC side includes an online monitoring module and a server. The online monitoring module is used to monitor the operating status of the primary distribution module, the secondary distribution module and the tertiary distribution module in real time. When a related branch fault is detected, a remote control tripping command is remotely issued to cut off the faulty branch. The server has data analysis and storage functions, and can perform topology calculations for the primary distribution module, the secondary distribution module and the tertiary distribution module.

[0032] The above online monitoring module can monitor the operating status of each low-voltage circuit breaker in the three-level power distribution module in real time. When a related branch fault is detected, a remote control tripping command can be issued remotely to remove the faulty branch. The server is the hardware carrier and storage center of all data of the online monitoring module.

[0033] Example 2: Figure 3 As shown, an embodiment of the present invention discloses a method for connecting a low-voltage power distribution load to a mobile power vehicle, comprising the following steps: S101, connecting a primary power distribution module, multiple secondary power distribution modules, and multiple tertiary power distribution modules in sequence, and then connecting the primary power distribution module to a mobile power supply of a mobile power supply vehicle and a PC end respectively; S102, connecting the three-level power distribution module to the user end to supply power to the user end; S103, the power distribution modules at all levels obtain the operation data of the user end in real time and output it to the PC end; wherein the operation data includes voltage, current, and opening and closing position status signals; S104, the PC determines in real time whether the user terminal is faulty based on the received operation data; S105, in response to "yes", the PC sends a remote control trip command to remove the faulty branch.

[0034] In the above step S104, if the response is no, the PC does not output the remote strict control command.

[0035] Among them, possible faults at the user end include overvoltage inside the corresponding low-voltage circuit breaker branch (the voltage received at the PC end is higher than the actual set voltage), overcurrent (the current received at the PC end increases abnormally), and loss of voltage (the voltage received at the PC end is lower than the actual operating voltage).

[0036] Among them, the power distribution modules at all levels obtain the operating data of the user end in real time and output it to the PC end, including: The first sensor unit in the primary power distribution module obtains the voltage, current and opening / closing position signal of the first low-voltage circuit breaker, and outputs it to the main control unit, which then outputs it to the PC end; The second sensor unit in the secondary power distribution module obtains the voltage, current and opening / closing position signal of the second low-voltage circuit breaker and outputs it to the main control unit, which then outputs it to the PC via the main control unit. The third sensor unit in the three-level power distribution module obtains the voltage, current and opening and closing position signals of the third low-voltage circuit breaker, and outputs them to the main control unit, which then outputs them to the PC via the main control unit.

[0037] Example 3: Figure 4 As shown, an embodiment of the present invention discloses a connection device for 1-N power line branches, wherein the primary power distribution module includes: a main control unit, a first sensor unit 1-N and a first low-voltage circuit breaker 1-N, the main control unit is connected to the first sensor unit 1-N and the main control unit through an FT3 communication line to implement remote control commands, the first sensor unit 1-N is connected to the first low-voltage circuit breaker 1-N, and the first low-voltage circuit breaker 1-N is connected to the connection power supply and the secondary power distribution module 1-N through a socket; wherein 1-N refers to a branch of the 1-N power line.

[0038] The secondary power distribution module 1-N includes: a main control unit, a second sensor unit 1-N and a second low-voltage circuit breaker 1-N. The main control unit is connected to the second sensor unit 1-N and the main control unit through an FT3 communication line, the second sensor unit 1-N is connected to the second low-voltage circuit breaker 1-N, and the second low-voltage circuit breaker 1-N is connected to the tertiary power distribution module 1-N through a socket.

[0039] The three-level power distribution module 1-N includes: a third sensor unit 1-N and a third low-voltage circuit breaker 1-N. The third sensor unit 1-N is connected to the main control unit and the third low-voltage circuit breaker 1-N through an FT3 communication line, and the third low-voltage circuit breaker 1-N is connected to the user through a socket.

[0040] In summary, the present invention realizes the demand that a high-power mobile power supply vehicle can supply power to multiple user terminals at the same time by designing a three-level power distribution module, increases the power supply range of the high-power mobile power supply vehicle, and effectively improves the power supply capability of the mobile power supply vehicle.

[0041] Furthermore, the present invention realizes the monitoring and control of all low-voltage circuit breakers in the three-level distribution module of the mobile power vehicle through the cooperation of the PC terminal, the general control unit, the main control unit and multiple sensor units. While improving the power supply capability of the mobile power vehicle, it can conveniently realize the automatic removal of user loads at each power supply point, effectively improving the power supply safety and reliability of the mobile power vehicle.

Claims

1. A low-voltage distribution load access device for a mobile power supply vehicle, characterized in that: It includes a mobile power supply vehicle, a primary power distribution module, multiple secondary power distribution modules, multiple tertiary power distribution modules and a PC terminal, among which: The primary power distribution module is connected to the mobile power vehicle, and the power output by the mobile power vehicle is reasonably distributed to the secondary power distribution module, and the power is distributed according to the power size and importance of the secondary power distribution module; The secondary power distribution module is used to distribute the power output by the primary power distribution module to the tertiary power distribution module, meeting the demand for simultaneous power supply of multiple tertiary power distribution modules, and distributing power according to the power size and importance of the tertiary power distribution module; The third-level power distribution module is mainly used to reasonably distribute the power output by the second-level power distribution module to the power-consuming equipment, so as to meet the requirements of power supply to multiple equipment at the same time, and to distribute power according to the power size and importance of the power-consuming equipment; The PC end is mainly responsible for monitoring and controlling the information status of each line in the primary distribution module, the secondary distribution module and the tertiary distribution module, mastering the operating power consumption status of each branch, and completing the remote switching and power distribution of the user end according to the user end connected to the primary distribution module, the secondary distribution module and the tertiary distribution module.

2. A low-voltage power distribution load access device for a mobile power supply vehicle according to claim 1, characterized in that: The primary power distribution module includes a master control unit, a first sensor unit and a first low-voltage circuit breaker, wherein: The first low-voltage circuit breaker is connected to the first sensor unit, and is connected to the mobile power supply vehicle and the secondary power distribution module through a socket, and is used for switching the primary power distribution module and the secondary power distribution module; The first sensing unit obtains the operation information of the first low-voltage circuit breaker, uploads the operation information to the main control unit, and receives the remote control command issued by the main control unit to control the remote opening and closing of the first low-voltage circuit breaker; wherein the operation information of the first low-voltage circuit breaker includes voltage and current information and opening and closing position information; The master control unit is used to receive the operation information output by the first sensor unit and upload it to the PC. At the same time, the master control unit receives the remote control command issued by the PC and outputs it to the first sensor unit.

3. A low-voltage power distribution load access device for a mobile power supply vehicle according to claim 1, characterized in that: The secondary power distribution module includes a main control unit, a second sensor unit, and a second low-voltage circuit breaker, wherein: The second low-voltage circuit breaker is connected to the second sensor unit and is connected to the three-level power distribution module through a socket, and is used for switching between the secondary power distribution module and the tertiary power distribution module; The second sensing unit obtains the operation information of the second low-voltage circuit breaker, uploads the operation information to the main control unit, and receives the remote control command issued by the main control unit to control the remote opening and closing of the second low-voltage circuit breaker; The main control unit is used to receive the operating information output by the second sensor unit and upload it to the primary power distribution module, which then uploads it to the PC. At the same time, the main control unit receives the remote control command issued by the PC via the primary power distribution module and outputs it to the second sensor unit.

4. A low-voltage power distribution load access device for a mobile power supply vehicle according to claim 1, characterized in that: The three-level power distribution module includes a third sensor unit and a third low-voltage circuit breaker, wherein: The third low-voltage circuit breaker is connected to the third sensor unit and is connected to the user through the socket, and is used for switching between the three-level power distribution module and the user; The third sensing unit obtains the operating information of the third low-voltage circuit breaker and sends the operating information to the secondary power distribution module, which outputs the operating information to the PC end via the primary power distribution module, and receives the remote control commands issued by the PC end via the primary power distribution module and the secondary power distribution module to control the remote opening and closing of the third low-voltage circuit breaker.

5. A low-voltage power distribution load access device for a mobile power supply vehicle according to claim 1, characterized in that: The PC side includes an online monitoring module and a server. The online monitoring module is used to monitor the operating status of the primary distribution module, the secondary distribution module and the tertiary distribution module in real time. When a related branch fault is detected, a remote control tripping command is remotely issued to cut off the faulty branch. The server has data analysis and storage functions and can perform topology calculations for the primary distribution module, the secondary distribution module and the tertiary distribution module.

6. A method for connecting low-voltage power distribution loads to a mobile power vehicle, characterized in that: The following steps are involved: Connect the primary power distribution module, multiple secondary power distribution modules, and multiple tertiary power distribution modules in sequence, and then connect the primary power distribution module to the mobile power supply of the mobile power supply vehicle and the PC end respectively; Connect the three-level power distribution module to the user end to supply power to the user end; The power distribution modules at all levels obtain the operation data of the user end in real time and output it to the PC end; the operation data includes voltage, current, and opening and closing position status signals; The PC side determines whether the user side is faulty in real time based on the received operation data; In response, the PC sends a remote control trip command to remove the faulty branch.

7. A method for connecting low-voltage power distribution loads to a mobile power vehicle according to claim 6, characterized in that: The power distribution modules at all levels obtain the operation data of the user end in real time and output it to the PC end, including: The first sensor unit in the primary power distribution module obtains the voltage, current and opening / closing position signal of the first low-voltage circuit breaker, and outputs it to the main control unit, which then outputs it to the PC end; The second sensor unit in the secondary power distribution module obtains the voltage, current and opening / closing position signal of the second low-voltage circuit breaker and outputs it to the main control unit, which then outputs it to the PC via the main control unit. The third sensor unit in the three-level power distribution module obtains the voltage, current and opening and closing position signals of the third low-voltage circuit breaker, and outputs them to the main control unit, which then outputs them to the PC via the main control unit.

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