CN114583830A - DC power line - Google Patents

DC power line Download PDF

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Publication number
CN114583830A
CN114583830A CN202210064718.1A CN202210064718A CN114583830A CN 114583830 A CN114583830 A CN 114583830A CN 202210064718 A CN202210064718 A CN 202210064718A CN 114583830 A CN114583830 A CN 114583830A
Authority
CN
China
Prior art keywords
cable
power supply
circuit
control unit
electrically connected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210064718.1A
Other languages
Chinese (zh)
Inventor
常青亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huizhou Kaisheng Wire And Cable Co ltd
Original Assignee
Huizhou Kaisheng Wire And Cable Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huizhou Kaisheng Wire And Cable Co ltd filed Critical Huizhou Kaisheng Wire And Cable Co ltd
Priority to CN202210064718.1A priority Critical patent/CN114583830A/en
Publication of CN114583830A publication Critical patent/CN114583830A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/40—Testing power supplies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a DC power line, comprising: the monitoring unit and the main control unit are arranged on the DC cable and arranged between the external power supply and the load; the monitoring unit is arranged at one end of the DC cable close to the external power supply, and the main control unit is arranged at one end of the DC cable close to the load. The DC power line of the invention is used as a communication channel through the DC cable, thus the main control unit is in communication connection with the monitoring unit, and the main control unit can directly monitor the working state parameters of the external power supply through the DC cable, thereby realizing convenient and effective monitoring of the external power supply by a user.

Description

DC power line
Technical Field
The invention relates to the technical field of electric fittings, in particular to a DC power line.
Background
The electric energy supply is an essential important component for people in production and life, and the management level of the power supply greatly influences the reliability and safety of people in the production and life process. Therefore, it is important to monitor the power supply efficiently and reliably on-line in the power supply system.
However, some existing online power monitoring products have the problems of limited measurement parameters, inconvenience in installation and maintenance and the like.
Disclosure of Invention
Therefore, a DC power line is needed to be provided aiming at the technical problem that the existing power online monitoring product is inconvenient to install and maintain.
A DC power line comprises a DC cable, a monitoring unit for monitoring power supply operation parameters and a main control unit which is responsible for detecting data display, system control and communication with an upper computer, wherein two ends of the DC cable are respectively connected with an external power supply and a load, and the monitoring unit and the main control unit are arranged on the DC cable and arranged between the external power supply and the load; the monitoring unit is arranged at one end of the DC cable close to the external power supply, and the main control unit is arranged at one end of the DC cable close to the load.
In one embodiment, the DC cable has a first plug, a second plug and a relay switch for controlling the on-off of the DC cable, the first plug is disposed at one end of the DC cable, and the second plug is disposed at the other end of the DC cable; the relay switch is provided to the DC cable, and the relay switch is provided between the first plug and the second plug.
In one embodiment, the main control unit includes a first microcontroller, a first communication circuit, a first power circuit, an LCD, and an operation panel, where the first communication circuit, the first power circuit, the LCD, and the operation panel are electrically connected to the first microcontroller respectively; the first communication circuit is electrically connected with the monitoring unit through a DC cable; the first power supply circuit is connected with an external power supply through a DC cable; the first microcontroller is electrically connected with the relay switch.
In one embodiment, the main control unit further includes a first coupling circuit, and two ends of the first coupling circuit are electrically connected to the first communication circuit.
In one embodiment, the main control unit further includes a signal isolation circuit, and the signal isolation circuit is integrated with the main control unit.
In one embodiment, the monitoring unit includes a second microcontroller, a second communication circuit, a second power circuit, a temperature sensor, a voltage sensor, and a current sensor, and the second communication circuit, the second power circuit, the temperature sensor, the voltage sensor, and the current sensor are electrically connected to the second microcontroller respectively; the second communication circuit is electrically connected with the first communication circuit through a DC cable; the second power supply circuit is connected with an external power supply through a DC cable; the temperature sensor is arranged on the outer surface of the DC cable; the voltage sensor and the current sensor are connected to an external power supply through DC cables, respectively.
In one embodiment, the monitoring unit further includes a second coupling circuit, and two ends of the second coupling circuit are electrically connected to the second communication circuit.
In one embodiment, the DC cable further includes a plurality of branch lines, a plurality of third plugs, and a plurality of branch relay switches, the plurality of plugs are respectively and correspondingly disposed at one ends of the plurality of branch lines, which are respectively far away from the corresponding third plugs, are converged in the DC cable, the plurality of branch relay switches are respectively and correspondingly disposed on the plurality of branch lines, and the plurality of branch relay switches are respectively and electrically connected to the first microcontroller.
In one embodiment, the third plugs can be electrically connected to corresponding backup power sources respectively.
In one embodiment, the DC power line further includes a plurality of branch monitoring units, and the branch monitoring units are electrically connected to the branch lines respectively.
In one embodiment, the plurality of branch monitoring units have the same structure as the monitoring unit, and are respectively connected to the first communication circuit through a DC cable.
In summary, the DC power line disclosed by the present invention uses the DC cable as a communication channel, so that the main control unit and the monitoring unit are communicatively connected, and the main control unit can directly monitor the working state parameters of the external power source through the DC cable, thereby implementing convenient and effective monitoring of the external power source by the user. In addition, the DC power line provided by the invention can enable the load to be connected with a plurality of standby power supplies by arranging the plurality of branch lines and the plurality of branch monitoring units, and can monitor the corresponding standby power supplies through the corresponding branch monitoring units, thereby effectively improving the stability of the power supply of the power line to the load.
Drawings
FIG. 1 is a schematic diagram of a DC power line in one embodiment;
FIG. 2 is a schematic diagram of a main control unit in one embodiment;
fig. 3 is a schematic structural diagram of a monitoring unit in one embodiment.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1, the present invention discloses a DC power line, which includes a DC cable, a monitoring unit for monitoring power supply operation parameters, and a main control unit for detecting data display, system control, and communicating with an upper computer. Specifically, two ends of the DC cable are respectively connected to an external power source and a load, and the monitoring unit and the main control unit are both arranged on the DC cable and between the external power source and the load; the monitoring unit is arranged at one end of the DC cable close to the external power supply, and the main control unit is arranged at one end of the DC cable close to the load. In practical application, when a load needs to be connected with an external power supply, the load is connected with the external power supply through a DC power line, wherein the DC cable transmits a direct-current power supply to the load, the monitoring unit can monitor the running state parameters of the external power supply and send monitoring data to the main control unit, the main control unit can reflect the monitoring data to an operator, and the operator can control the connection condition of the DC power line through the main control unit.
Referring to fig. 1, further, the DC cable has a first plug, a second plug and a relay switch for controlling on/off of the DC cable. The first plug is arranged at one end of the DC cable, and the second plug is arranged at the other end of the DC cable; the relay switch is provided to the DC cable, and the relay switch is provided between the first plug and the second plug. In practical application, the DC cable is connected with an external power supply through the first plug and is connected with the load through the second plug, and the relay switch can control the on-off of the DC cable, so that the on-off of the load and the external power supply is controlled.
Referring to fig. 2, further, the main control unit includes a first microcontroller, a first communication circuit, a first power circuit, an LCD, and an operation panel. The first communication circuit, the first power supply circuit, the LCD and the operation panel are respectively electrically connected with the first microcontroller; the first communication circuit is electrically connected with the monitoring unit through a DC cable; the first power supply circuit is connected with an external power supply through a DC cable; the first microcontroller is electrically connected with the relay switch. In practical application, the first microcontroller can receive and analyze monitoring data and display the data through the LCD, an operator manually controls the main control unit through the operation panel according to the monitoring data displayed by the LCD, and the main control unit controls the opening and closing of the relay switch through the first microcontroller; the first communication circuit can receive monitoring information sent by the monitoring unit, so that the monitoring information is transmitted to the first microcontroller; the first power circuit can obtain power from an external power source through the DC cable to supply power to the main control unit.
Referring to fig. 2, further, the main control unit further includes a first coupling circuit, and two ends of the first coupling circuit are electrically connected to the first communication circuit. In practical applications, the first coupling circuit is used for transmission of electric energy and signals in the DC cable.
Referring to fig. 2, further, the main control unit further includes a signal isolation circuit integrated with the main control unit. In practical application, because the main control unit is arranged between the monitoring unit and the load, the signal isolation circuit can effectively improve the electromagnetic compatibility of the system.
Referring to fig. 3, further, the monitoring unit includes a second microcontroller, a second communication circuit, a second power circuit, a temperature sensor, a voltage sensor, and a current sensor. The second communication circuit, the second power supply circuit, the temperature sensor, the voltage sensor and the current sensor are respectively electrically connected with the second microcontroller; the second communication circuit is connected with the first communication circuit through the DC cable; the second power supply circuit is connected with an external power supply through a DC cable; the temperature sensor is arranged on the outer surface of the DC cable; the voltage sensor and the current sensor are connected to an external power supply through DC cables, respectively. In practical application, the second microcontroller is responsible for controlling the temperature sensor, the voltage sensor and the current sensor to monitor and collect the running state parameters of the external power supply, and transmitting the collected monitoring data to the first communication circuit through the second communication circuit; and the second power circuit is capable of drawing power from an external power source via the DC cable to power the monitoring unit.
Referring to fig. 3, further, the monitoring unit further includes a second coupling circuit, and two ends of the second coupling circuit are electrically connected to the second communication circuit. In practical applications, the second coupling circuit is used for transmission of electric energy and signals in the DC cable.
Referring to fig. 1, the DC cable further includes a plurality of branch lines, a plurality of third plugs, and a plurality of branch relay switches. The plugs are respectively and correspondingly arranged at one ends of the branch lines, far away from the corresponding third plug, are respectively tied to the DC cable, and the branch relay switches are respectively and correspondingly electrically connected to the branch lines. Specifically, the plurality of third plugs can be respectively and electrically connected with the plurality of corresponding standby power supplies; the branch relay switches are respectively and electrically connected with the first microcontroller. In practical application, the first microcontroller can control the on-off of the corresponding branch line through a plurality of branch relay switches.
Referring to fig. 1, the DC power line further includes a plurality of branch monitoring units, and the branch monitoring units are respectively and electrically connected to the plurality of branch lines. Specifically, the structures of the plurality of branch monitoring units are the same as the monitoring units, and the branch monitoring units are connected with the first communication circuit through DC cables respectively. In practical application, the plurality of branch monitoring units can monitor and collect the operating state parameters of the corresponding standby power supplies through the corresponding branch lines, so that a plurality of groups of monitoring data are transmitted to the first communication circuit through the DC cable, and the main control unit is further used for monitoring the operating states of the standby power supplies.
In summary, the DC power line disclosed by the present invention uses the DC cable as a communication channel, so that the main control unit and the monitoring unit are communicatively connected, and the main control unit can directly monitor the working state parameters of the external power source through the DC cable, thereby implementing convenient and effective monitoring of the external power source by the user. In addition, the DC power line provided by the invention can enable the load to be connected with a plurality of standby power supplies by arranging the plurality of branch lines and the plurality of branch monitoring units, and can monitor the corresponding standby power supplies through the corresponding branch monitoring units, thereby effectively improving the stability of the power supply of the power line to the load.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A DC power supply line, comprising: the monitoring unit and the main control unit are arranged on the DC cable and arranged between the external power supply and the load; the monitoring unit is arranged at one end, close to the external power supply, of the DC cable, and the main control unit is arranged at one end, close to the load, of the DC cable.
2. The DC power supply line according to claim 1, wherein the DC cable has a first plug, a second plug, and a relay switch that controls on/off of the DC cable, the first plug being provided at one end of the DC cable, the second plug being provided at the other end of the DC cable; the relay switch is provided to the DC cable, and the relay switch is provided between the first plug and the second plug.
3. The DC power supply line of claim 2, wherein the master control unit comprises a first microcontroller, a first communication circuit, a first power circuit, an LCD, and an operation panel, the first communication circuit, the first power circuit, the LCD, and the operation panel being electrically connected to the first microcontroller, respectively; the first communication circuit is electrically connected with the monitoring unit through the DC cable; the first power supply circuit is connected to the external power supply through the DC cable; the first microcontroller is electrically connected with the relay switch.
4. The DC power line of claim 3, wherein the master control unit further comprises a first coupling circuit, and two ends of the first coupling circuit are electrically connected to the first communication circuit.
5. The DC power supply line of claim 3, wherein the master control unit further comprises a signal isolation circuit integrated within the master control unit.
6. The DC power cord of claim 3, wherein the monitoring unit comprises a second microcontroller, a second communication circuit, a second power circuit, a temperature sensor, a voltage sensor, and a current sensor, the second communication circuit, the second power circuit, the temperature sensor, the voltage sensor, and the current sensor being electrically connected to the second microcontroller, respectively; the second communication circuit is electrically connected with the first communication circuit through the DC cable; the second power supply circuit is connected to the external power supply through the DC cable; the temperature sensor is arranged on the outer surface of the DC cable; the voltage sensor and the current sensor are respectively connected with the external power supply through the DC cables.
7. The DC power supply line of claim 6, wherein the monitoring unit further comprises a second coupling circuit, both ends of the second coupling circuit being electrically connected to the second communication circuit.
8. The DC power line according to claim 3, wherein the DC cable further includes a plurality of branch lines, a plurality of third plugs, and a plurality of branch relay switches, the plurality of plugs are respectively disposed at one ends of the plurality of branch lines, which are respectively away from the corresponding third plugs, are converged at the DC cable, the plurality of branch relay switches are respectively disposed at the plurality of branch lines, and the plurality of branch relay switches are respectively electrically connected to the first microcontroller.
9. The DC power line according to claim 8, further comprising a plurality of branch monitoring units, wherein the plurality of branch monitoring units are electrically connected to the plurality of branch lines respectively.
10. The DC power supply line according to claim 9, wherein a plurality of the branch monitoring units have the same structure as the monitoring units and are connected to the first communication circuit through the DC cables, respectively.
CN202210064718.1A 2022-01-20 2022-01-20 DC power line Pending CN114583830A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210064718.1A CN114583830A (en) 2022-01-20 2022-01-20 DC power line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210064718.1A CN114583830A (en) 2022-01-20 2022-01-20 DC power line

Publications (1)

Publication Number Publication Date
CN114583830A true CN114583830A (en) 2022-06-03

Family

ID=81769809

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210064718.1A Pending CN114583830A (en) 2022-01-20 2022-01-20 DC power line

Country Status (1)

Country Link
CN (1) CN114583830A (en)

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