CN116317122A - Line terminal device and power distribution device - Google Patents
Line terminal device and power distribution device Download PDFInfo
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- CN116317122A CN116317122A CN202310149072.1A CN202310149072A CN116317122A CN 116317122 A CN116317122 A CN 116317122A CN 202310149072 A CN202310149072 A CN 202310149072A CN 116317122 A CN116317122 A CN 116317122A
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- 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
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- 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]
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- 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
- H02J13/00016—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 a wired telecommunication network or a data transmission bus
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- 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
- H02J13/00022—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 wireless data transmission
- H02J13/00026—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 wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
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- 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
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Abstract
The embodiment of the application provides a line terminal device and power distribution device, wherein, this line terminal device includes: the main control unit is powered by the total power line, and is used for detecting the voltage of the total power line to obtain a voltage signal, detecting the current of the total power line to obtain a first current signal, and determining main electric quantity detection data based on the voltage signal and the first current signal; the branch unit is used for acquiring a voltage signal detected by the main control unit, carrying out current detection on a corresponding branch power line to obtain a second current signal, and determining corresponding branch electric quantity detection data based on the voltage signal and the second current signal; the connecting unit is used for detachably connecting the main control unit and the branch unit or detachably connecting the two branch units. By the mode, the complexity of the circuit of the power distribution device can be reduced, and the transformation cost of the power distribution device is reduced.
Description
Technical Field
The application relates to the technical field of power supply, in particular to a line terminal device and a power distribution device.
Background
In recent years, a low-voltage distribution network becomes a ring which is most closely related to users in an electric power internet of things system, distribution areas are widely distributed, equipment is numerous, the situation is complex, cloud edge cooperative mechanisms cannot be verified, and an efficient monitoring control method is lacked. The quality of the low-voltage distribution network operation directly influences the electricity utilization experience of power consumers. The low-voltage transformer area has the problems of inaccurate system data, low operation and maintenance efficiency, untimely fault reporting, unclear relationship, long maintenance time, difficult discovery of electricity larceny, unknown equipment state and the like.
The intelligent transformation scheme of the existing transformer area is to install an intelligent detection terminal and a communication module on the existing element, the intelligent plastic shell is replaced or the intelligent plastic shell is slightly broken, when multiple branches exist, the replaced modules are more, and the defects of complex transformation, high cost, original equipment and lines damage and the like exist.
Disclosure of Invention
The embodiment of the application provides a line terminal device and a power distribution device, which can reduce the complexity of the line of the power distribution device and reduce the transformation cost of the power distribution device.
The present application provides a line termination device, the line termination device comprising: the main control unit is powered by the total power line, and is used for detecting the voltage of the total power line to obtain a voltage signal, detecting the current of the total power line to obtain a first current signal, and determining main electric quantity detection data based on the voltage signal and the first current signal; the branch unit is used for acquiring a voltage signal detected by the main control unit, carrying out current detection on a corresponding branch power line to obtain a second current signal, and determining corresponding branch electric quantity detection data based on the voltage signal and the second current signal; the connecting unit is used for detachably connecting the main control unit and the branch unit or detachably connecting the two branch units.
In some embodiments, the master control unit comprises: the main control circuit is connected with the main power line and is used for detecting the voltage of the main power line and supplying power to the branch unit; the first current transformer is connected with the main control circuit and coupled with the total power line, and is used for detecting the current of the total power line.
In some embodiments, the master circuit comprises: a main control module; the power supply conversion module is connected with the main power line, the main control module and the branch unit and is used for converting the voltage of a power supply provided by the main power line so as to supply power to the branch unit; the first measurement module is connected with the main control module, the total power line and the first current transformer and is used for detecting the voltage of the total power line to obtain a voltage signal and detecting the current of the total power line based on the first current transformer to obtain a first current signal.
In some embodiments, a total breaker is provided on the total power line, the power conversion module is connected to an input end of the total breaker, the first current transformer is coupled to the input end of the total breaker, and the power taking mode of the power conversion module is puncture power taking.
In some embodiments, a total circuit breaker is arranged on the total power line, the first current transformer is coupled with the input end of the total circuit breaker, and the power conversion module is connected with the output end of the total circuit breaker.
In some embodiments, the main control circuit further includes a first communication module, the first communication module is connected to the main control module and the connection unit, and the first communication module is used for communicating with the branch unit.
In some embodiments, the master control unit further includes an uplink communication circuit, the uplink communication circuit is connected to the master control circuit and the host computer, and the uplink communication circuit is used for communicating with the host computer.
In some embodiments, the branching unit comprises: the branch circuit is powered by the main control unit and is used for acquiring a voltage signal detected by the main control unit; the second current transformer is connected with the branch circuit and coupled with the corresponding branch power line, and is used for detecting the current of the branch power line.
In some embodiments, the branch circuit includes: a sub-control module; the second measuring module is connected with the sub-control module and the second current transformer and is used for carrying out current detection on the sub-power line based on the second current transformer to obtain a second current signal.
In some embodiments, the branch circuit further includes a second communication module, where the second communication module is connected to the sub-control module and the connection unit, and the second communication module is used to communicate with the main control unit.
In some embodiments, a circuit breaker is provided on the branch power line, and a second current transformer is coupled to an output of the circuit breaker.
The application also provides a power distribution device comprising the line termination device.
The line terminal device provided by the embodiment of the application comprises: the main control unit is powered by the total power line, and is used for detecting the voltage of the total power line to obtain a voltage signal, detecting the current of the total power line to obtain a first current signal, and determining main electric quantity detection data based on the voltage signal and the first current signal; the branch unit is used for acquiring a voltage signal detected by the main control unit, carrying out current detection on a corresponding branch power line to obtain a second current signal, and determining corresponding branch electric quantity detection data based on the voltage signal and the second current signal; the connecting unit is used for detachably connecting the main control unit and the branch unit or detachably connecting the two branch units. By the mode, on one hand, original elements are not required to be replaced, and when multiple branches exist in the meter box, the data monitoring of each branch can be realized by only increasing the number of the branch units; on the other hand, only one path of voltage input is needed for supplying power, the power supply of the branch unit is obtained by the conversion of the main control unit, the synchronism of voltage and current can be ensured, the wiring complexity is reduced, and the safety is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an embodiment of a line termination device provided in the present application;
FIG. 2 is a schematic diagram of an embodiment of the master control unit 10 in FIG. 1;
FIG. 3 is a schematic diagram of an embodiment of the master control circuit 11 in FIG. 2;
FIG. 4 is a schematic diagram of an embodiment of the branching unit 20 of FIG. 1;
FIG. 5 is a schematic diagram of an embodiment of the branch circuit 21 of FIG. 4;
fig. 6 is a schematic structural view of another embodiment of the line termination device provided in the present application;
fig. 7 is a schematic structural view of a further embodiment of the line termination device provided herein;
fig. 8 is a schematic structural view of an embodiment of a power distribution device provided in the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
"A and/or B" includes the following three combinations: only a, only B, and combinations of a and B.
The use of "adapted" or "configured to" in this application is meant to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps. In addition, the use of "based on" is intended to be open and inclusive in that a process, step, calculation, or other action "based on" one or more of the stated conditions or values may be based on additional conditions or beyond the stated values in practice.
In this application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes have not been shown in detail to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a line termination device provided in the present application, where the line termination device 100 includes a main control unit 10 and at least one branching unit 20.
The line termination unit (LTU, line termination unit) is a composite functional block in the digital transmission system that contains at least a transmitting function and a receiving function, or a device that implements the composite function. Generally, line termination devices are used in the transmission and access fields of cables.
In this embodiment, the main control unit 10 is powered by a main power line, and the main control unit 10 is configured to perform voltage detection on the main power line to obtain a voltage signal, perform current detection on the main power line to obtain a first current signal, and determine main power detection data based on the voltage signal and the first current signal; the branch unit 20 is powered by the main control unit 10, and the branch unit 20 is used for acquiring a voltage signal detected by the main control unit 10, performing current detection on a corresponding branch power line to obtain a second current signal, and determining corresponding branch electric quantity detection data based on the voltage signal and the second current signal; the connection unit 30 is used to detachably connect the main control unit 10 and the branch unit 20, or to detachably connect the two branch units 20.
It can be appreciated that, in an embodiment, each branch unit 20 may be directly connected to the main control unit 10, and is powered by the main control unit 10, and receives a voltage signal obtained by voltage detection of the main control unit 10 on the total power line; in another embodiment, a first one of the plurality of branch units 10 is connected to the main control unit 10, and the remaining branch units 20 are sequentially connected, specifically, between the main control unit 10 and the branch units 20, or between the two branch units 20 may be connected through the connection unit 30.
Specifically, the connection unit 30 mainly includes the following functions:
1. downlink transmission of voltage signals: that is, the voltage signal obtained by the main control unit 10 detecting the voltage of the total power line is transmitted to the branch unit 20 through the connection unit 30, and the branch unit 20 calculates the branch electric quantity detection data by using the voltage signal and the second current signal obtained by detecting the current of the corresponding branch electric power limit.
2. Uplink transmission of electric quantity detection data: each branch unit 20 transmits the calculated branch electric quantity detection data to the main control unit 10 through the connection unit 30, and the main control unit 10 uploads the main electric quantity detection data calculated by itself and the received branch electric quantity detection data to the upper computer.
3. And (3) power supply: the main control unit 10 is supplied with power from the main power line, voltage-converts the power supplied from the main power line, and then supplies power to the branch unit 20 through the connection unit 30.
It should be understood that the above-mentioned transmission of the voltage signal and uplink transmission of the power detection data may pass through a communication link, and the power supply needs to pass through another power supply path, so in an alternative embodiment, the main control unit 10 and the branching unit 20 may include two external interfaces, i.e. one power supply interface and one communication interface, and the connection unit 30 also needs to include two external power supply interfaces and two communication interfaces, so as to connect the main control unit 10 and the branching unit 20, or two branching units 20.
The embodiment mainly has the following advantages:
1. the old distribution equipment is convenient to reform without replacing the original elements, the intellectualization is realized by additionally installing the LTU (line terminal device 100), and when multiple branches exist in the meter box, the data monitoring can be realized by only adding the branch unit 20. Compared with the prior art, the intelligent circuit breaker has the advantages of convenience in transformation, low cost, no damage to original equipment and circuits, strong applicability and the like.
2. Only one path of power supply voltage input is needed, the voltage of the total power line (main loop) is input to the main control unit 10, and the voltage is reduced by the main control unit 10 and then transmitted to the branch unit 20, so that the synchronism of the voltage and the current can be ensured. Compared with the voltage of each LTU connected to the main loop, the wiring complexity is reduced, and the safety is improved.
The main control unit 10 and the branching unit 20 are described below, respectively.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an embodiment of the master control unit 10 in fig. 1, where the master control unit 10 includes a master control circuit 11 and a first current transformer 12.
The main control circuit 11 is connected to the main power line, and the main control circuit 11 is used for detecting the voltage of the main power line and supplying power to the branch unit 20; the first current transformer 12 is connected to the main control circuit 11 and coupled to the total power line, and the first current transformer 12 is used for detecting the current of the total power line.
Optionally, the main control unit 10 further includes an uplink communication circuit 13, where the uplink communication circuit 13 connects the main control circuit 11 and the host computer. The uplink communication circuit 13 may upload the determined main power detection data and branch power detection data to the upper computer by adopting 485 communication, bluetooth communication or HPLC communication.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an embodiment of the master control circuit 11 in fig. 2, where the master control circuit 11 includes a master control module 111, a power conversion module 112, and a first measurement module 113.
The power conversion module 112 is connected to the main power line, the main control module 111 and the branching unit (the branching unit 20 is connected through the connection unit 30), and the power conversion module 112 is used for performing voltage conversion on the power provided by the main power line so as to supply power to the branching unit 20; the first measurement module 113 is connected to the main control module 111, the total power line, and the first current transformer 12, and the first measurement module 113 is configured to perform voltage detection on the total power line to obtain a voltage signal, and perform current detection on the total power line based on the first current transformer 12 to obtain a first current signal.
Further, the first detection module 113 transmits the voltage signal and the first current signal to the main control module 111, and the main control module 111 calculates total power detection data (e.g. power data) based on the voltage signal and the first current signal.
Optionally, the power conversion module 112 is configured to convert the voltage of the power supplied by the main power line, specifically, may convert a higher power voltage into a lower power voltage (e.g. 12V). The power conversion module 112 may be implemented by a voltage divider circuit, a low dropout regulation voltage regulator (LDO), a voltage transformation circuit, etc., which is not limited herein. The converted low-voltage power source is mainly used for supplying power to each branch unit 20, so that each branch unit 20 does not need to be additionally provided with a power transmission line for supplying power, and the main control unit 10 and the plurality of branch units 20 only need one power supply line, namely a total power line.
Alternatively, the first measurement module 113 may be an electric energy measurement chip, which may directly detect the voltage of the total power line for voltage measurement, and further, the electric energy measurement chip may be connected to the first current transformer 12 for current measurement.
For example, the power metering unit 131 may be a power metering chip of V9240 or V9260S, and the following is a description of V9240 as an example, and the pin parameters of the V9240S chip are as follows:
it can be understood that, in practical applications, the 2/3 th pin or the 4/5 th pin of the V9240S chip can be used as an input of a current signal (connected to the total power line), and the 13/14 th pin can be connected to the main control module 111 for transmitting metering data.
In an alternative embodiment, the main control circuit 11 may further include a display module 114, where the main control circuit 11 is configured to display the metering data, and specifically may include a voltage data display, a current data display, a total power detection data display, and a branch power detection data display.
In an alternative embodiment, the main control circuit 11 may further include a first communication module 115, and the main control circuit 11 is configured to send the detected voltage signal to each branch unit 20 based on the first communication module 115, so that the branch unit 20 calculates branch power detection data based on the voltage signal and the respective detected second current signal; and acquiring current data, voltage data or calculated branch power detection data detected by each branch unit 20 based on the first communication module 115, and then transmitting the current data, the voltage data or the calculated branch power detection data to the upper computer together through the uplink communication circuit 13. The first communication module 115 may use CAN communication to implement communication between the main control and the branch.
Referring to fig. 4, fig. 4 is a schematic diagram illustrating an embodiment of the branching unit 20 in fig. 1, where the branching unit 20 includes a branching circuit 21 and a second current transformer 22.
The branch circuit 21 is powered by the main control unit 10, and the branch circuit 21 is used for acquiring a voltage signal detected by the main control unit 10; the second current transformer 22 is connected to the branch circuit and coupled to the corresponding branch power line, and the second current transformer 22 is used for detecting the current of the branch power line.
With further reference to fig. 5, fig. 5 is a schematic structural diagram of an embodiment of the branch circuit 21 in fig. 4, where the branch circuit 21 includes a sub-control module 211 and a second measurement module 212.
The second measurement module 212 is connected to the sub-control module 211 and the second current transformer 22, and the second measurement module 212 is configured to obtain a second current signal by performing current detection on the sub-power line based on the second current transformer 22.
As can be appreciated, since the power supply of the branch units 20 is provided by the power conversion module 112 in the main control unit 10, the power supply of each branch unit 20 is performed without adding an additional power transmission line, and only one power supply line, i.e., a total power line, is required for the main control unit 10 and the plurality of branch units 20.
Alternatively, the second measurement module 212 may be an electrical energy metering chip that may be connected to the second current transformer 22 for metering current and then generating electrical energy metering data based on the voltage metering result and the current metering result. For example, the electric energy metering unit 131 may be an electric energy metering chip of V9240 or V9260S, and the specific implementation is similar to the above embodiment, and will not be repeated here.
It can be understood that the second measurement module 212 does not need to perform voltage detection on the branch power lines, and since the plurality of branch power lines are connected in parallel, in this embodiment, only the main control unit 10 is required to perform voltage detection on the total power line, and each branch unit 20 only needs to perform calculation by using the voltage signal detected by the main control unit 10.
In an alternative embodiment, the branch circuit 21 may further include a second communication module 213, where the second communication module 213 is configured to communicate with the main control unit 10 or other branch units 20, for example, the detected second current signal, or branch power detection data obtained by calculating using the voltage signal and the second current signal may be sent to the main control unit 10 through the second communication module 213 and the connection unit, and then the main control unit 10 is sent to the upper computer together through the uplink communication circuit 13. The second communication module 213 may use CAN communication to implement communication between the main control and the branch or between the branches.
In addition, in the above embodiment of the main control unit 10 and the branching unit 20, modules similar to the environment detection, temperature detection, display, and the like are also included.
The arrangement of the current transformers in the main control unit 10 and the branching unit 20 is described below by means of two embodiments.
As shown in fig. 6, fig. 6 is a schematic structural diagram of another embodiment of a line termination device provided in the present application, and the line termination device 100 includes a main control unit 10 and at least one branching unit 20.
In this embodiment, a total breaker is provided on a total power line, and a breaker is provided on each component branch power line.
In this embodiment, the main control unit 10 is connected to an input end of the main circuit breaker for taking electricity, that is, the power switching module 112 in the main control unit 10 is connected to the input end of the main circuit breaker for taking electricity, and the first current transformer 12 is coupled to the input end of the main circuit breaker. Optionally, the power supply conversion module 112 is powered by puncture.
It is understood that piercing and electricity taking means that the insulated wire has good insulation and corrosion resistance performance relative to the bare wire, and is not easily damaged by external force, so that the application is wide. The overhead insulated conductor can reduce the workload during operation and maintenance, reduce the probability of electric shock casualties, improve the safety level of a power grid, and has more obvious advantages when crossing densely populated areas. Has good insulation and corrosion resistance, is not easy to be damaged by external force, and has wide application. The overhead insulated conductor can reduce the workload during operation and maintenance, reduce the probability of electric shock casualties, improve the safety level of a power grid, and has more obvious advantages when crossing densely populated areas. The conventional puncture wire taking clamp is generally provided with a puncture blade which is perpendicular to the axial direction of the main cable, the puncture blade is provided with a plurality of puncture teeth which are arranged in an arc shape, and the puncture blade can puncture the insulating layer of the main cable under the action of external force so as to puncture and take electricity.
In this embodiment, the second current transformer 22 is coupled to the output of the circuit breaker.
Alternatively, the first current transformer 12 and the second current transformer 22 may be split and combined, which is convenient for installation.
As shown in fig. 7, fig. 7 is a schematic structural diagram of a further embodiment of the line termination device provided in the present application, and the line termination device 100 includes a main control unit 10 and at least one branching unit 20.
In this embodiment, a total breaker is provided on a total power line, and a breaker is provided on each component branch power line.
In this embodiment, the main control unit 10 is connected to an output end of the main circuit breaker for taking electricity, that is, the power switching module 112 in the main control unit 10 is connected to the output end of the main circuit breaker for taking electricity, and the first current transformer 12 is coupled to an input end of the main circuit breaker. It can be appreciated that when electricity is taken, the wiring operation can be performed only by opening the total circuit breaker, and a puncture electricity taking mode is not required.
In this embodiment, the second current transformer 22 is coupled to the output of the circuit breaker.
Alternatively, the first current transformer 12 and the second current transformer 22 may be split and combined, which is convenient for installation.
In the above embodiment, the number of the branch units 20 may be determined according to the number of branch power lines or branch breakers.
The line termination device provided in this embodiment includes: the main control unit is powered by the total power line, and is used for detecting the voltage of the total power line to obtain a voltage signal, detecting the current of the total power line to obtain a first current signal, and determining main electric quantity detection data based on the voltage signal and the first current signal; the branch unit is used for acquiring a voltage signal detected by the main control unit, carrying out current detection on a corresponding branch power line to obtain a second current signal, and determining corresponding branch electric quantity detection data based on the voltage signal and the second current signal; the connecting unit is used for detachably connecting the main control unit and the branch unit or detachably connecting the two branch units. By the mode, on one hand, original elements are not required to be replaced, and when multiple branches exist in the meter box, the data monitoring of each branch can be realized by only increasing the number of the branch units; on the other hand, only one path of voltage input is needed for supplying power, the power supply of the branch unit is obtained by the conversion of the main control unit, the synchronism of voltage and current can be ensured, the wiring complexity is reduced, and the safety is improved.
Referring to fig. 8, fig. 8 is a schematic structural diagram of an embodiment of a power distribution device 200 provided in the present application, and the power distribution device 200 includes a line termination device 100 as described in the above embodiment.
It will be appreciated that the power distribution device 200 may be a low voltage distribution box that connects to an external total power line and then forms a plurality of branch power lines through circuit breakers to be provided to respective terminals. The number of the branch units in the power distribution device 200 may be configurable according to the number of branch power lines or the number of connected terminals, that is, the number of the branch units may be adjustable.
In addition, in one embodiment, the present application also provides a power grid system including a plurality of power distribution devices 200 therein. Optionally, the power grid system further comprises a power supply terminal, a load terminal and the like.
The foregoing has outlined rather broadly the more detailed description of embodiments of the present application, wherein specific examples are provided herein to illustrate the principles and embodiments of the present application, the above examples being provided solely to assist in the understanding of the methods of the present application and the core ideas thereof; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.
Claims (12)
1. A line termination device, the line termination device comprising:
the main control unit is powered by a main power line, and is used for detecting the voltage of the main power line to obtain a voltage signal, detecting the current of the main power line to obtain a first current signal, and determining main electric quantity detection data based on the voltage signal and the first current signal;
the branch unit is used for acquiring the voltage signal detected by the main control unit, carrying out current detection on a corresponding branch power line to obtain a second current signal, and determining corresponding branch electric quantity detection data based on the voltage signal and the second current signal;
the connecting unit is used for detachably connecting the main control unit and the branch unit or detachably connecting the two branch units.
2. The line termination device of claim 1, wherein,
the main control unit comprises:
the main control circuit is connected with the total power line and is used for detecting the voltage of the total power line and supplying power to the branch unit;
the first current transformer is connected with the main control circuit and coupled with the total power line, and is used for detecting the current of the total power line.
3. The line termination device of claim 2, wherein,
the master control circuit includes:
a main control module;
the power conversion module is connected with the main power line, the main control module and the branch unit and is used for converting the voltage of a power supply provided by the main power line so as to supply power to the branch unit;
the first measurement module is connected with the main control module, the total power line and the first current transformer, and is used for detecting the voltage of the total power line to obtain a voltage signal and detecting the current of the total power line to obtain a first current signal based on the first current transformer.
4. The line termination device of claim 3, wherein,
the power supply conversion module is connected with the input end of the total circuit breaker, the first current transformer is coupled with the input end of the total circuit breaker, and the power taking mode of the power supply conversion module is puncture power taking.
5. The line termination device of claim 3, wherein,
the power supply conversion module is connected with the output end of the total circuit breaker.
6. The line termination device of claim 3, wherein,
the main control circuit further comprises a first communication module, wherein the first communication module is connected with the main control module and the connecting unit, and the first communication module is used for communicating with the branch unit.
7. The line termination device of claim 2, wherein,
the main control unit further comprises an uplink communication circuit, wherein the uplink communication circuit is connected with the main control circuit and the upper computer, and the uplink communication circuit is used for communicating with the upper computer.
8. The line termination device of claim 1, wherein,
the branching unit includes:
the branch circuit is powered by the main control unit and is used for acquiring the voltage signal detected by the main control unit;
and the second current transformer is connected with the branch circuit and coupled with the corresponding branch power line, and is used for detecting the current of the branch power line.
9. The line termination device of claim 8, wherein,
the branch circuit includes:
a sub-control module;
the second measuring module is connected with the sub-control module and the second current transformer and is used for carrying out current detection on the branch power line based on the second current transformer to obtain a second current signal.
10. The line termination device of claim 9, wherein,
the branch circuit further comprises a second communication module, the second communication module is connected with the branch control module and the connection unit, and the second communication module is used for communicating with the main control unit.
11. The line termination device of claim 8, wherein,
and the branch power line is provided with a breaking circuit breaker, and the second current transformer is coupled with the output end of the breaking circuit breaker.
12. A power distribution apparatus comprising a line termination apparatus as claimed in any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310149072.1A CN116317122A (en) | 2023-02-21 | 2023-02-21 | Line terminal device and power distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310149072.1A CN116317122A (en) | 2023-02-21 | 2023-02-21 | Line terminal device and power distribution device |
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| CN116317122A true CN116317122A (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310149072.1A Pending CN116317122A (en) | 2023-02-21 | 2023-02-21 | Line terminal device and power distribution device |
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| JP2008092681A (en) * | 2006-10-02 | 2008-04-17 | Matsushita Electric Works Ltd | Power monitoring system |
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| CN212111585U (en) * | 2020-04-28 | 2020-12-08 | 张全利 | Wisdom consumer |
| CN217587553U (en) * | 2022-03-03 | 2022-10-14 | 山东鼎维数字技术有限公司 | Power supply bus detection protection circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008092681A (en) * | 2006-10-02 | 2008-04-17 | Matsushita Electric Works Ltd | Power monitoring system |
| CN203086153U (en) * | 2012-12-30 | 2013-07-24 | 冯占国 | Low-voltage power supply line three-phase load balance adjustment system |
| JP6738074B1 (en) * | 2019-06-05 | 2020-08-12 | 山田和幸株式会社 | Power feeding control system, power feeding control method, and power feeding control program |
| CN212111585U (en) * | 2020-04-28 | 2020-12-08 | 张全利 | Wisdom consumer |
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