Multi-shunt modular electric energy acquisition system

Abstract

The invention discloses a multi-branch modular electric energy acquisition system, which comprises a main electric energy acquisition device and a plurality of branch electric energy acquisition devices, and is characterized in that the main electric energy acquisition device comprises at least one first communication bus interface, and each branch electric energy acquisition device comprises at least two second communication bus interfaces; the branch electric energy acquisition devices connected with the same main cable in the plurality of branch electric energy acquisition devices are connected in sequence through communication buses inserted between the respective second communication bus interfaces; the second communication bus interface of one branch electric energy acquisition device is connected with the first communication bus interface of the main electric energy acquisition device through a communication bus; the branch electric energy acquisition device is used for acquiring branch electric parameter data of an accessed branch cable; the main path electric energy acquisition device is used for acquiring main path electric parameter data of an accessed main path cable. The whole set of scheme is designed in a modularized mode, assembling and modularized management are convenient, wiring is few, the installation process is simple and convenient, branch loop capacity expansion is convenient, and cost is controllable.

Description

Technical Field

[0001] The present invention relates to the technical field of power monitoring, and particularly relates to a multi-branch modular power energy acquisition system. Background Art

[0002] The patent "An energy consumption monitoring device for a data center" (authorization announcement number CN 216956929 U) proposes an energy consumption monitoring device, which is a data center energy consumption monitoring device with a compact design and convenient installation, and can perform real-time monitoring of the total power of two incoming lines of A + B and the outgoing branch lines.

[0003] The patents "Intelligent AC main monitoring system for data center row head cabinets" (authorization announcement number CN 208158235 U) and "Intelligent AC branch monitoring system for data center row head cabinets" (authorization announcement number CN 208423933 U) propose an intelligent AC main and branch monitoring system for data center row head cabinets, which can realize real-time monitoring of the electrical parameters output by the row head cabinets, improve reliability, and prevent accidents.

[0004] The patent "A modular monitoring device for data center row head cabinets" (authorization announcement number: CN209488268 U) provides a modular monitoring device for data center row head cabinets, which defines and divides the monitoring device for row head cabinets modularly, and can be assembled and used in combination in the case of multiple main and branch lines, facilitating assembly and modular management, and meeting the requirements of complex working conditions.

[0005] The above several methods can all achieve data acquisition of the electrical parameters of each loop of the main and branch lines of the data center row head cabinets, and achieve real-time monitoring of the entire power distribution system. However, the sensors and the acquisition devices are separated, and the electrical parameter signals of each branch loop need to be separately wired, resulting in a large number of cables for collecting the signals of each branch loop, complex wiring, easy to make mistakes, and it is difficult to meet the requirements of adding branch loops and their electrical parameter acquisition lines on site, and the on-site expansion cost is expensive. Summary of the Invention

[0006] The purpose of the present invention is to overcome the defects existing in the prior art and provide a multi-branch modular power energy acquisition system that can reduce the number of wirings, reduce the probability of wiring errors, is convenient for expansion, and has a modular design.

[0007] To achieve the above purpose, the technical solution of the present invention is to design a multi-branch modular power energy acquisition system. The multi-branch modular power energy acquisition system includes a main circuit power energy acquisition device and a plurality of branch circuit power energy acquisition devices. The main circuit power energy acquisition device includes at least one first communication bus interface, and the branch circuit power energy acquisition devices include at least two second communication bus interfaces; Among the several branch circuit power acquisition devices, the branch circuit power acquisition devices connected to the same main circuit cable are sequentially connected through a communication bus plugged between their respective second communication bus interfaces, and the second communication bus interface of one branch circuit power acquisition device is connected to the first communication bus interface of the main circuit power acquisition device through a communication bus; The branch circuit power acquisition device is used to collect the branch circuit electrical parameter data of the accessed branch circuit cable, count the branch circuit power, and upload the branch circuit electrical parameter data collected by itself to the main circuit power acquisition device through the communication bus accessed through the second communication bus interface; The main circuit power acquisition device is used to collect the main circuit electrical parameter data of the accessed main circuit cable, count the main circuit power, and receive the branch circuit electrical parameter data uploaded by each branch circuit power acquisition device through the communication bus accessed through the first communication bus interface.

[0008] Further, the branch circuit power acquisition device further includes a branch circuit electrical signal acquisition module and a branch circuit main control module, and the branch circuit main control module is electrically connected to the branch circuit electrical signal acquisition module and the at least two second communication bus interfaces respectively; The branch circuit electrical signal acquisition module is used to access the target branch circuit cable, collect the voltage signal and current signal of the target branch circuit cable, and transmit the voltage signal and current signal of the target branch circuit cable to the branch circuit main control module; The branch circuit main control module is used to calculate the electrical parameter data of the target branch circuit cable according to the voltage signal and current signal of the target branch circuit cable, and upload the electrical parameter data of the target branch circuit cable to the main circuit power acquisition device through the communication bus accessed through the second communication bus interface.

[0009] Further, the branch circuit power acquisition device is divided into a plug-in part and a base, the plug-in part is provided with a male end port, and the base is provided with a female end port; The at least two second communication bus interfaces are arranged on the plug-in part, the branch circuit main control module is arranged in the plug-in part, and the branch circuit main control module is electrically connected to the male end port; The branch circuit electrical signal acquisition module is arranged in the base, and the branch circuit electrical signal acquisition module is electrically connected to the female end port; After the plug-in part and the base are plugged together, the male end port and the female end port are correspondingly connected.

[0010] Further, the branch circuit electrical signal acquisition module includes a current-carrying copper bar, a branch circuit current sampling unit, a branch circuit voltage sampling unit, a temperature measurement unit, a PCB board, and a lower terminal connection port; One end of the current-carrying copper bar is connected to the main circuit cable, and the other end of the current-carrying copper bar is connected to the lower terminal connection port, and the lower terminal connection port is used to access the branch line cable; The branch current sampling unit, the branch voltage sampling unit, and the temperature measurement unit are respectively arranged on the current-carrying copper bar and are respectively electrically connected to the PCB board, and the PCB board serves as the mother end port.

[0011] Further, the branch main control module includes a branch CPU chip, a branch power management unit, a branch storage unit, and a sampling signal receiving circuit; The branch CPU chip is respectively electrically connected to the branch power management unit, the branch storage unit, the sampling signal receiving circuit, and the at least two second communication bus interfaces, and the sampling signal receiving circuit is electrically connected to the public end port.

[0012] Further, the multi-branch modular power acquisition system further includes a plurality of circuit breakers; One end of the current-carrying copper bar is connected to the main circuit cable through the circuit breaker.

[0013] Further, the electrical parameter data includes at least one of active power, reactive power, apparent power, power factor, demand, sub-harmonics, and total harmonics.

[0014] Further, the main circuit power acquisition device further includes a main control module and at least one main circuit electrical signal acquisition module, and the main control module is respectively electrically connected to at least one main circuit electrical signal acquisition module and the at least one first communication bus interface; The main circuit electrical signal acquisition module is used to access the target main circuit cable, collect the voltage signal and current signal of the target main circuit cable, and transmit the voltage signal and current signal of the target main circuit cable to the main circuit main control module; The main control module is used to calculate the electrical parameter data of the target main circuit cable according to the voltage signal and current signal of the target main circuit cable, and receive the branch electrical parameter data uploaded by each branch power acquisition device through the communication bus accessed by the first communication bus interface.

[0015] Further, the main circuit electrical signal acquisition module includes a main circuit voltage acquisition unit and a main circuit current acquisition unit, and the main control module includes a main circuit CPU chip, an isolation communication unit, an Ethernet communication unit, a main circuit power management unit, and a main circuit storage unit; The main circuit CPU chip is respectively electrically connected to the main circuit voltage acquisition unit, the main circuit current acquisition unit, the isolation communication unit, the Ethernet communication unit, the main circuit power management unit, and the main circuit storage unit.

[0016] Further, the multi-branch modular power acquisition system further includes a display screen, and the display screen is communicatively connected to the main circuit power acquisition device; The display screen is used to display the main circuit electrical parameter data and each branch circuit electrical parameter data transmitted by the main circuit power acquisition device.

[0017] The advantages and beneficial effects of the present invention are as follows: The main circuit cable is connected to the main circuit power acquisition device to collect the main circuit electrical parameter data, and each branch circuit cable is connected to the branch circuit power acquisition device to collect the branch circuit electrical parameter data. And each branch circuit power acquisition device is provided with at least two communication bus interfaces, so that the branch circuit power acquisition devices connected to the same main circuit cable can be sequentially connected by plugging the communication bus between their respective communication bus interfaces, and finally connected to the communication bus interface of the main circuit power acquisition device. Thus, the branch circuit electrical parameter data collected by each branch circuit power acquisition device can be uploaded to the main circuit power acquisition device for storage, realizing the modular design of the whole set of solutions. It can be used arbitrarily in combination in the case of the main circuit and more branch circuits, which is convenient for assembly and modular management, with fewer wiring, simple installation process, not easy to make mistakes, and at the same time convenient for the expansion of the branch circuit loop of the on-site distribution cabinet, and the cost is controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the multi-branch modular power acquisition system of the present invention; Figure 2 is a schematic installation diagram of the branch circuit power acquisition device and the circuit breaker; Figure 3 is a schematic structural diagram of the branch circuit power acquisition device; Figure 4 is for Figure 3 the port definition diagram of 13 in In the figure: 1, main circuit power acquisition device; 2, branch circuit power acquisition device; 3, communication bus; 4, touch screen; 5, miniature circuit breaker; 6, lower terminal connection port of the circuit breaker; 7, current-carrying copper bar; 8, second communication bus interface; 9, lower terminal connection port of the branch acquisition device; 10, branch circuit power acquisition device; 11, branch current sampling unit; 12, branch voltage sampling unit; 13, temperature measurement unit; 14, male terminal port of the plug-in; 15, PCB board; 16, plug-in; 17, base; 20-29 are all pins of the male terminal port of the plug-in. DETAILED DESCRIPTION OF THE INVENTION

[0019] The following combines the drawings and embodiments to further describe the specific embodiments of the present invention. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0020] According to Figures 1 to 4As shown in the figure, the multi-branch modular power energy acquisition system of the present invention includes a main path power energy acquisition device and a plurality of branch path power energy acquisition devices. The main path power energy acquisition device 1 includes at least one first communication bus interface, and the branch path power energy acquisition device 2 includes at least two second communication bus interfaces 8. Among the plurality of branch path power energy acquisition devices, the branch path power energy acquisition devices connected to the same main path cable are sequentially connected through a communication bus inserted between their respective second communication bus interfaces, and the second communication bus interface of one of the branch path power energy acquisition devices 2 is connected to the first communication bus interface of the main path power energy acquisition device 1 through a communication bus.

[0021] The branch path power energy acquisition device is used to collect the branch path electrical parameter data of the accessed branch path cable, count the branch path power, and upload the branch path electrical parameter data collected by itself to the main path power energy acquisition device through the communication bus accessed through the second communication bus interface.

[0022] The main path power energy acquisition device is used to collect the main path electrical parameter data of the accessed main path cable, count the main path power, and receive the branch path electrical parameter data uploaded by each branch path power energy acquisition device through the communication bus accessed through the first communication bus interface.

[0023] For example, Figure 1 n branch path power energy acquisition devices (A1~An) on the main cable of path A, where each branch path power energy acquisition device is connected to a branch cable branched from the main cable of path A. Two adjacent branch path power energy acquisition devices among these n branch path power energy acquisition devices are connected through a communication bus 3 inserted between their respective second communication bus interfaces. The specific connection method refers to Figure 2 , Figure 2 , in which the branch path power energy acquisition device 2 is adjacent to the branch path power energy acquisition device 10. One end of the communication bus 3 is inserted into the communication bus interface on the branch path power energy acquisition device 2, and the other end of the communication bus 3 is inserted into the communication bus interface on the branch path power energy acquisition device 2, and so on. The subsequent branch path power energy acquisition devices adjacent to the branch path power energy acquisition device 10 are also connected in this way. Another communication bus interface 8 on the branch path power energy acquisition device 2 can be inserted into the communication bus connected to the main path power energy acquisition device 1. One end of this communication bus is inserted into the communication bus interface 8 on the branch path power energy acquisition device 2, and the other end is inserted into the communication bus interface corresponding to the main cable of path A on the main path power energy acquisition device 1. In the way of connecting the communication bus interfaces of each branch path power energy acquisition device with a communication bus, the branch path electrical parameter data collected by each branch path power energy acquisition device can be uploaded to the main path power energy acquisition device in real time for storage. At the same time, the main path power energy acquisition device can collect the main path electrical parameter data of the accessed main path cable, so that the main path power energy acquisition device can collect and save the electrical parameter data of the main path cable and the electrical parameter data of each branch path cable, waiting to be uploaded to the background system or uploaded to the display screen 4 for display.

[0024] In the embodiments of the present disclosure, the main road cable is connected to the main road power acquisition device to collect the main road electrical parameter data, and each branch cable is connected to the branch power acquisition device to collect the branch electrical parameter data. Moreover, each branch power acquisition device is provided with at least two communication bus interfaces, so that the branch power acquisition devices connected to the same main road cable can be sequentially connected by plugging in the communication bus between their respective communication bus interfaces and finally connected to the communication bus interface of the main road power acquisition device. Thus, the branch electrical parameter data collected by each branch power acquisition device can be uploaded to the main road power acquisition device for storage, realizing the modular design of the whole set of solutions. It can be used in any combination in the case of a main road and many branches, which is convenient for assembly and modular management, with fewer wires, simple installation process, not easy to make mistakes, and at the same time convenient for the expansion of the branch circuit of the field distribution cabinet, and the cost is controllable.

[0025] In order to realize the function of the branch power acquisition device to collect the branch cable electrical parameter data, a further preferred implementation of the present invention is that the branch power acquisition device further includes a branch electrical signal acquisition module and a branch main control module. The branch main control module is electrically connected to the branch electrical signal acquisition module and at least two second communication bus interfaces respectively. The branch electrical signal acquisition module is used to access the target branch cable, collect the voltage signal and current signal of the target branch cable, and transmit the voltage signal and current signal of the target branch cable to the branch main control module. The branch main control module is used to calculate the electrical parameter data of the target branch cable according to the voltage signal and current signal of the target branch cable, and upload the electrical parameter data of the target branch cable to the main road power acquisition device through the communication bus connected through the second communication bus interface.

[0026] In order to realize the modular design of the branch power acquisition device and facilitate the maintenance and replacement of the module without power interruption, a further preferred implementation of the present invention is that the branch power acquisition device 2 is divided into a plug-in part 16 and a base 17. The plug-in part 16 is provided with a male end port 14, and the base is provided with corresponding female end ports. At least two second communication bus interfaces are arranged on the plug-in part 16, and the branch main control module is arranged in the plug-in part 16. The branch main control module is electrically connected to the male end port. The branch electrical signal acquisition module is arranged in the base, and the branch electrical signal acquisition module is electrically connected to the female end port. After the plug-in part 16 and the base 17 are plugged together, the male end port and the female end port are correspondingly connected.

[0027] In order to implement the functions of the branch electrical signal acquisition module, and at the same time monitor the temperature of the branch electrical signal acquisition module to improve safety, a further preferred embodiment of the present invention is that the branch electrical signal acquisition module includes a current-carrying copper bar 7, a branch current sampling unit 11, a branch voltage sampling unit 12, a temperature measurement unit 13, a PCB board 15, and a lower terminal connection port 9. One end of the current-carrying copper bar 7 is connected to the main circuit cable, and the other end of the current-carrying copper bar 7 is connected to the lower terminal connection port 9, and the lower terminal connection port 9 is used to access the branch cable. The branch current sampling unit 11, the branch voltage sampling unit 12, and the temperature measurement unit 13 are respectively arranged on the current-carrying copper bar and are respectively electrically connected to the PCB board 15, and the PCB board 15 serves as the female terminal port of the base 17.

[0028] The branch current sampling unit is used to sample the current signal of the target branch cable, the branch voltage sampling unit is used to sample the voltage signal of the target branch cable, and the temperature measurement unit is used to measure the temperature of the current-carrying copper bar.

[0029] Figure 3 In the branch current sampling unit 11, the branch voltage sampling unit 12, and the temperature measurement unit 13 are all wired on Figure 3 the PCB board 15 in. The PCB board 15 serves as the female terminal port of the base 17. After the plug-in 16 and the base 17 are plugged together, the PCB board 15 is wired to the male terminal port 14 on the plug-in 16. The port definition of the male terminal port 14 on the plug-in 16 is as Figure 4 shown: In order to ensure the stable and reliable signal of the connector 16, pins 20 and 21 are connected in parallel to the branch voltage sampling unit 12 (U), pins 22 and 23 are connected in parallel to the sampling input terminal I1 of the branch current sampling unit 11, pins 24 and 25 are connected in parallel to the output terminal I2 of the branch current sampling unit 11, pins 26 and 27 are empty pins, pin 28 is connected to the signal sampling input terminal T1 of the temperature measurement unit 13, and pin 29 is connected to the signal sampling output terminal T2 of the temperature measurement unit 13.

[0030] In order to implement the functions of the branch main control module, the electrical parameter data collected by each branch power energy acquisition device can be locally stored to prevent data interference and tampering. A further preferred embodiment of the present invention is that the branch main control module includes a branch CPU chip, a branch power management unit, a branch storage unit, and a sampling signal receiving circuit. The branch CPU chip is respectively electrically connected to the branch power management unit, the branch storage unit, the sampling signal receiving circuit, and at least two second communication bus interfaces, and the sampling signal receiving circuit is electrically connected to the male terminal port.

[0031] The sampling signal receiving circuit is used to receive the voltage signal and current signal sampled by the branch electrical signal acquisition module for analog-to-digital conversion, and transmit the converted voltage data and current data to the branch CPU chip. The branch power management unit is used to supply power to the branch CPU chip. The branch CPU chip is used to calculate the electrical parameter data of the target branch cable according to the voltage data and current data. The branch storage unit is used to store the electrical parameter data collected by the branch CPU chip. The branch CPU chip can be a microprocessor MCU, and the microprocessor MCU is connected to the two communication bus interfaces of the branch power acquisition device through a communication circuit. The branch storage unit can be implemented through a storage circuit, and the branch power management unit can be implemented through a power circuit.

[0032] To improve the safety of the multi-branch modular power acquisition system, a further preferred embodiment of the present invention is that the multi-branch modular power acquisition system further includes a plurality of miniature circuit breakers 5; one end of the current-carrying copper bar 7 is connected to the main circuit cable through the circuit breaker 5.

[0033] For the specific connection method, refer to Figure 2 , one end of the current-carrying copper bar 7 of the branch power acquisition device 2 is directly fixed on the lower terminal port 6 of the miniature circuit breaker 5, and the lower terminal port 10 of the branch power acquisition device 2 is connected to the branch cable.

[0034] To make the electrical parameter data collected by the multi-branch modular power acquisition system more comprehensive, a further preferred embodiment of the present invention is that the electrical parameter data includes at least one of active power, reactive power, apparent power, power factor, demand, fractional harmonics, and total harmonics.

[0035] The main circuit power acquisition device monitors the voltage and current of the main circuit cable, calculates electrical parameters such as active power, reactive power, apparent power, power factor, demand, fractional harmonics, and total harmonics of the main circuit cable, and counts the main circuit power consumption.

[0036] The branch power acquisition device monitors the voltage and current of the branch cable, calculates electrical parameters such as active power, reactive power, apparent power, power factor, demand, fractional harmonics, and total harmonics of the branch cable, and counts the branch power consumption.

[0037] To achieve the modular design of the main circuit power acquisition device, a further preferred embodiment of the present invention is that the main circuit power acquisition device further includes a master control module and at least one main circuit electrical signal acquisition module. The master control module is electrically connected to at least one main circuit electrical signal acquisition module and at least one first communication bus interface respectively. The main circuit electrical signal acquisition module is used to access the target main circuit cable, collect the voltage signal and current signal of the target main circuit cable, and transmit the voltage signal and current signal of the target main circuit cable to the main circuit master control module. The master control module is used to calculate the electrical parameter data of the target main circuit cable according to the voltage signal and current signal of the target main circuit cable, and receive the branch electrical parameter data uploaded by each branch power acquisition device through the communication bus accessed by the first communication bus interface.

[0038] To achieve the function of the main circuit power acquisition device to collect the electrical parameter data of the main circuit cable and facilitate communication with external devices, a further preferred embodiment of the present invention is that the main circuit electrical signal acquisition module includes a main circuit voltage acquisition unit and a main circuit current acquisition unit, and the master control module includes a main circuit CPU chip, an isolation communication unit, an Ethernet communication unit, a main circuit power management unit and a main circuit storage unit. The main circuit CPU chip is electrically connected to the main circuit voltage acquisition unit, the main circuit current acquisition unit, the isolation communication unit, the Ethernet communication unit, the main circuit power management unit and the main circuit storage unit respectively.

[0039] The main circuit voltage acquisition unit can collect the voltage signal of the accessed main circuit cable, the main circuit current acquisition unit can collect the current signal of the accessed main circuit cable, the main circuit CPU chip calculates the electrical parameter data of the main circuit cable according to the voltage signal and current signal of the main circuit cable, counts the main circuit power, the main circuit power management unit supplies power to the main circuit CPU chip and the main circuit storage unit, and the main circuit storage unit stores the electrical parameter data. The isolation communication unit and the Ethernet communication unit are used for data interaction with the external system. The isolation communication unit is implemented through an isolation uplink communication interface (which can be a wired communication interface such as RS485, CANBUS, MODBUS, etc. and a wireless communication interface such as Zigbee, UWB, NFC, WIFI, LoRa, etc.), and the Ethernet communication unit is implemented through an uplink Ethernet communication interface.

[0040] To display the electrical parameter data of each main circuit and each branch circuit in real time, a further preferred embodiment of the present invention is that the multi-branch modular power acquisition system further includes a display screen 4. The display screen 4 is communicatively connected to the main circuit power acquisition device 1, and the display screen 4 is used to display the electrical parameter data of each main circuit and each branch circuit transmitted by the main circuit power acquisition device 1.

[0041] In specific implementation, the main circuit power acquisition device can be provided with a communication bus interface with DC24V power supply to supply power to the display screen, and at the same time establish a communication connection between the display screen and the main circuit power acquisition device, and transmit the main circuit electrical parameter data and each branch electrical parameter data stored in the main circuit power acquisition device to the display screen for display.

[0042] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A multi-branch modular power acquisition system, characterized in that, Including: A main circuit power acquisition device and several branch circuit power acquisition devices. The main circuit power acquisition device includes at least one first communication bus interface, and the branch circuit power acquisition devices include at least two second communication bus interfaces; Among the several branch circuit power acquisition devices, the branch circuit power acquisition devices connected to the same main circuit cable are sequentially connected through a communication bus inserted between their respective second communication bus interfaces, and a second communication bus interface of one branch circuit power acquisition device is connected to the first communication bus interface of the main circuit power acquisition device through a communication bus; The branch circuit power acquisition device is used to collect branch electrical parameter data of the accessed branch cable, count the branch power consumption, and upload the branch electrical parameter data collected by itself to the main circuit power acquisition device through the communication bus accessed through the second communication bus interface; The main circuit power acquisition device is used to collect main circuit electrical parameter data of the accessed main circuit cable, count the main circuit power consumption, and receive the branch electrical parameter data uploaded by each branch circuit power acquisition device through the communication bus accessed through the first communication bus interface.

2. The multi-branch modular power acquisition system according to claim 1, characterized in that The branch circuit power acquisition device further includes a branch electrical signal acquisition module and a branch main control module. The branch main control module is electrically connected to the branch electrical signal acquisition module and the at least two second communication bus interfaces respectively; The branch electrical signal acquisition module is used to access the target branch cable, collect the voltage signal and current signal of the target branch cable, and transmit the voltage signal and current signal of the target branch cable to the branch main control module; The branch main control module is used to calculate the electrical parameter data of the target branch cable according to the voltage signal and current signal of the target branch cable, and upload the electrical parameter data of the target branch cable to the main circuit power acquisition device through the communication bus accessed through the second communication bus interface.

3. The multi-branch modular power acquisition system according to claim 2, wherein The branch circuit power acquisition device is divided into a plug-in part and a base. The plug-in part is provided with a male end port, and the base is provided with a female end port; The at least two second communication bus interfaces are arranged on the plug-in part, the branch main control module is arranged in the plug-in part, and the branch main control module is electrically connected to the male end port; The branch electrical signal acquisition module is arranged in the base, and the branch electrical signal acquisition module is electrically connected to the female end port; After the plug-in part and the base are plugged together, the male end port and the female end port are correspondingly connected.

4. The multi-branch modular power acquisition system according to claim 3, wherein The branch electrical signal acquisition module includes a current-carrying copper bar, a branch current sampling unit, a branch voltage sampling unit, a temperature measurement unit, a PCB board and a lower terminal interface; One end of the current-carrying copper bar is connected to the main circuit cable, and the other end of the current-carrying copper bar is connected to the lower terminal interface, and the lower terminal interface is used to access the branch cable; The branch current sampling unit, the branch voltage sampling unit and the temperature measurement unit are respectively arranged on the current-carrying copper bar and are respectively electrically connected to the PCB board, and the PCB board serves as the female end port.

5. The multi-branch modular power acquisition system according to claim 3, wherein The branch main control module includes a branch CPU chip, a branch power management unit, a branch storage unit and a sampling signal receiving circuit; The branch CPU chips are electrically connected to the branch power management unit, the branch storage unit, the sampling signal receiving circuit, and the at least two second communication bus interfaces respectively, and the sampling signal receiving circuit is electrically connected to the common terminal port.

6. The multi-branch modular power acquisition system according to claim 4, wherein The multi-branch modular power acquisition system further includes a plurality of circuit breakers; One end of the current-carrying copper bar is connected to the main circuit cable through the circuit breaker.

7. The multi-branch modular power acquisition system according to claim 1, wherein The electrical parameter data includes at least one of active power, reactive power, apparent power, power factor, demand, fractional harmonic, and total harmonic.

8. The multi-branch modular power acquisition system according to claim 1, wherein The main circuit power acquisition device further includes a master control module and at least one main circuit electrical signal acquisition module, and the master control module is electrically connected to the at least one main circuit electrical signal acquisition module and the at least one first communication bus interface respectively; The main circuit electrical signal acquisition module is used to access the target main circuit cable, collect the voltage signal and current signal of the target main circuit cable, and transmit the voltage signal and current signal of the target main circuit cable to the main circuit master control module; The master control module is used to calculate the electrical parameter data of the target main circuit cable according to the voltage signal and current signal of the target main circuit cable, and receive the branch electrical parameter data uploaded by each branch power acquisition device through the communication bus accessed by the first communication bus interface.

9. The multi-branch modular power acquisition system according to claim 8, wherein, The main circuit electrical signal acquisition module includes a main circuit voltage acquisition unit and a main circuit current acquisition unit, and the master control module includes a main circuit CPU chip, an isolation communication unit, an Ethernet communication unit, a main circuit power management unit, and a main circuit storage unit; The main circuit CPU chip is electrically connected to the main circuit voltage acquisition unit, the main circuit current acquisition unit, the isolation communication unit, the Ethernet communication unit, the main circuit power management unit, and the main circuit storage unit respectively.

10. The multi-branch modular power acquisition system according to claim 1, characterized in that, The multi-branch modular power acquisition system further includes a display screen, and the display screen is communicatively connected to the main circuit power acquisition device; The display screen is used to display the electrical parameter data of each main circuit and the electrical parameter data of each branch transmitted by the main circuit power acquisition device.

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