CN114994404A - Apparatus, system, method, device, and medium for multi-node power metering - Google Patents
Apparatus, system, method, device, and medium for multi-node power metering Download PDFInfo
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- CN114994404A CN114994404A CN202210897645.4A CN202210897645A CN114994404A CN 114994404 A CN114994404 A CN 114994404A CN 202210897645 A CN202210897645 A CN 202210897645A CN 114994404 A CN114994404 A CN 114994404A
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- current information
- phase current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
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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
- H02J13/00006—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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
The utility model relates to a low-voltage transformer district data monitoring field, concretely relates to an equipment, system, method, device and medium for multinode electric energy measurement, this node side equipment for multinode electric energy measurement includes: the open-type current transformer is arranged on a cable to be detected at a node and is used for detecting phase current information of the cable to be detected; and the node terminal is used for acquiring the phase current information detected by the open-type current transformer through mutual inductance and sending the phase current information to the gateway side equipment. This technical scheme can reduce equipment cost, and the wiring is simple, and it is convenient to maintain, can not influence the normal operating of node side equipment when circuit transformation or dismantlement, mainly used monitors the electric energy data of each distribution node.
Description
Technical Field
The disclosure relates to the field of low-voltage transformer area data monitoring, in particular to equipment, a system, a method, a device and a medium for multi-node electric energy metering.
Background
The low-voltage distribution area is a key link for connecting a power distribution network and power users, the construction of an intelligent power grid needs to promote the acquisition of data of the low-voltage distribution area, the acquisition of the data of the low-voltage distribution area mainly comprises the acquisition of current and voltage of three-phase electricity of each power distribution node, the current acquisition scheme is that a data acquisition device transmits acquired signals to a monitoring terminal in a wiring mode, and the monitoring terminal processes and analyzes the acquired signals. In the above-mentioned scheme, every node all need be equipped with a monitor terminal who has data processing and analysis function, and equipment cost is higher, and moreover, every node all will be worked a telephone switchboard installation and gather the device, and the wiring process is too loaded down with trivial details, and the normal operating that will influence monitor terminal will be dismantled with the transformation of circuit, will increase extra work load and the work degree of difficulty to the monitor terminal that needs long-time uninterrupted operation.
Disclosure of Invention
To solve the problems in the related art, embodiments of the present disclosure provide an apparatus, system, method, device, and medium for multi-node power metering.
In a first aspect, an apparatus for multi-node electrical energy metering is provided in embodiments of the present disclosure.
Specifically, the device for multi-node electric energy metering comprises:
the open-type current transformer is arranged on a cable to be detected at a node and is used for detecting phase current information of the cable to be detected;
and the node terminal is used for acquiring phase current information detected by the open-type current transformer through mutual inductance and sending the phase current information to the gateway side equipment.
In a possible implementation manner, the node side device is configured to send the phase current information to other node side devices, and the other node side devices forward the phase current information to the gateway side device.
In one possible implementation, the node-side device comprises a self-powered node-side device.
In a possible implementation manner, the open-type current transformer comprises two magnetic rings, wherein one magnetic ring is used for detecting phase current information of the cable to be detected, and the other magnetic ring is used for getting electricity through electromagnetic induction and supplying power to the node terminal.
In one possible implementation, the node terminal includes a rechargeable battery and/or a rechargeable capacitor for supplying power to the node terminal;
and the other magnetic coil of the open-type current transformer charges the rechargeable battery and/or the rechargeable capacitor by taking electricity through electromagnetic induction.
In one possible implementation, the node terminal includes a rechargeable battery and a rechargeable capacitor, and the node terminal further includes a controller;
the controller is used for controlling the charging capacitor to supply power to the node terminal when the cable to be tested is powered off, and controlling the charging battery to supply power to the node terminal when the charging capacitor is not electrified.
In a possible implementation manner, the node terminal further includes a first time synchronization module;
and the first time synchronization module is used for synchronizing time with a second time synchronization module in the gateway side equipment to realize time synchronization.
In a possible implementation manner, the node terminal further includes a first low-power-consumption WIFI module;
the first low-power-consumption WIFI module is used for establishing wireless connection with a second low-power-consumption WIFI module in the gateway side equipment.
In a second aspect, an embodiment of the present disclosure provides a system for multi-node power metering, including the node-side device and the gateway-side device described above, where:
and the gateway side equipment is wirelessly connected with the node terminal and is used for receiving the phase current information sent by the node terminal, acquiring the phase current information of each phase and metering electric energy based on the phase current information of each phase and each node.
In a third aspect, an embodiment of the present disclosure provides a method for multi-node electric energy metering, where the method is applied to the node-side device described above, and the method includes:
acquiring phase current information detected by an open-type current transformer;
and sending the phase current information to gateway side equipment so that the gateway side equipment can measure electric energy according to the phase current information.
In one possible implementation manner, the sending the phase current information to the gateway-side device includes:
and sending the phase current information to node terminals of other node side equipment so that the node terminals of the other node side equipment can forward the phase current information to gateway side equipment.
In a fourth aspect, the present disclosure provides a method for multi-node electric energy metering, which is applied to the above system, and the method includes:
the node terminal acquires phase current information detected by the open-type current transformer and sends the phase current information to gateway side equipment;
the gateway side equipment receives the phase current information sent by the node terminal, collects phase voltage information of each phase, and carries out electric energy metering based on the phase voltage information of each phase and the phase current information of each node.
In a fifth aspect, an apparatus for multi-node electric energy metering is provided in the embodiments of the present disclosure, and is applied to the node-side device described above, the apparatus includes:
the acquisition module is configured to acquire phase current information detected by the open-type current transformer;
the sending module is configured to send the phase current information to gateway side equipment so that the gateway side equipment can measure electric energy according to the phase current information.
In one possible implementation, the sending module is configured to:
and sending the phase current information to node terminals of other node side equipment so that the node terminals of the other node side equipment can forward the phase current information to gateway side equipment.
In a sixth aspect, the disclosed embodiments provide an electronic device comprising a memory and a processor, wherein the memory is configured to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement the method as described above.
In a seventh aspect, embodiments of the present disclosure provide a computer-readable storage medium, on which computer instructions are stored, and when executed by a processor, the computer instructions implement the method as described above.
In an eighth aspect, embodiments of the present disclosure provide a computer program product comprising computer instructions which, when executed by a processor, implement the method steps as described above.
According to the technical scheme provided by the embodiment of the disclosure, node side equipment can be arranged at each power distribution node needing to be subjected to electric energy metering, the node side equipment comprises an open-type current transformer and a node terminal, the open-type current transformer is installed on a cable to be tested of the node and used for detecting phase current information of the cable to be tested, and the node terminal is used for acquiring the phase current information detected by the open-type current transformer through mutual inductance and sending the phase current information to gateway side equipment so as to enable the gateway side equipment to be subjected to electric energy metering. Like this, node side equipment only has data acquisition and send function, carry out the electric energy measurement by the unified analysis of gateway side equipment, compared with the prior art, node side equipment cost that needs set up at a large amount of nodes reduces, entire system's equipment cost has greatly been reduced, moreover, can transmit the phase current information of gathering through mutual inductance between open-type current transformer and the node terminal in the node side equipment, need not the wiring connection, open-type current transformer can also be fast under the condition of not breaking the cable that awaits measuring, conveniently install or demolish, it is convenient to maintain, can not influence the normal operating of node side equipment.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
Other features, objects, and advantages of the present disclosure will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings.
Fig. 1 shows a schematic structural diagram of a node-side device for multi-node electrical energy metering according to an embodiment of the present disclosure.
FIG. 2 is a block diagram illustrating a system for multi-node electrical energy metering, according to an embodiment of the present disclosure.
FIG. 3 is a schematic diagram illustrating a configuration of a system for multi-node electrical energy metering, according to an embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram illustrating an energy-saving terminal according to an embodiment of the present disclosure.
FIG. 5 shows a flow diagram of a method for multi-node electrical energy metering, according to an embodiment of the present disclosure.
FIG. 6 shows a flow diagram of a method for multi-node electrical energy metering, according to an embodiment of the present disclosure.
FIG. 7 shows a block diagram of an apparatus for multi-node electrical energy metering, according to an embodiment of the present disclosure.
Fig. 8 shows a block diagram of an electronic device according to an embodiment of the present disclosure.
Detailed Description
Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. Also, for the sake of clarity, parts not relevant to the description of the exemplary embodiments are omitted in the drawings.
In the present disclosure, it is to be understood that terms such as "including" or "having," etc., are intended to indicate the presence of the disclosed features, numbers, steps, behaviors, components, parts, or combinations thereof, and are not intended to preclude the possibility that one or more other features, numbers, steps, behaviors, components, parts, or combinations thereof may be present or added.
It should be further noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The low-voltage distribution area is a key link for connecting a power distribution network and power users, the construction of an intelligent power grid needs to promote the acquisition of data of the low-voltage distribution area, the acquisition of the data of the low-voltage distribution area mainly comprises the acquisition of current and voltage of three-phase electricity of each power distribution node, the current acquisition scheme is that a data acquisition device transmits acquired signals to a monitoring terminal in a wiring mode, and the monitoring terminal processes and analyzes the acquired signals. In the above-mentioned scheme, every node all need be equipped with a monitor terminal who has data processing and analysis function, and equipment cost is higher, and in addition, every node all will be worked a telephone switchboard installation collection device, and the wiring process is too loaded down with trivial details, and the transformation of circuit and dismantlement will influence monitor terminal's normal operating, will increase extra work load and the work degree of difficulty to the monitor terminal that needs long-time uninterrupted operation.
In view of the above, this embodiment discloses a node side equipment for multinode electric energy measurement, sets up node side equipment at each distribution node that needs to carry out electric energy measurement, node side equipment includes open-type current transformer and node terminal, open-type current transformer installs on the cable that awaits measuring of node, is used for detecting the phase current information of the cable that awaits measuring, node terminal is used for acquireing through mutual inductance the phase current information that open-type current transformer detected, and will phase current information sends to gateway side equipment to make this gateway side equipment carry out electric energy measurement. Like this, node side equipment only has data acquisition and send function, carry out the electric energy measurement by the unified analysis of gateway side equipment, compared with the prior art, node side equipment cost that needs set up at a large amount of nodes reduces, entire system's equipment cost has greatly been reduced, moreover, can transmit the phase current information of gathering through mutual inductance between open-type current transformer and the node terminal in the node side equipment, need not the wiring connection, open-type current transformer can also be fast under the condition of not breaking the cable that awaits measuring, conveniently install or demolish, it is convenient to maintain, can not influence the normal operating of node side equipment.
Fig. 1 shows a schematic structural diagram of a node-side device for multi-node electrical energy metering according to an embodiment of the present disclosure. As shown in fig. 1, the node-side device 10 includes an open-type current transformer 101 and a node terminal 102.
In a possible embodiment, the open-type current transformer 101 (also called a combined transformer, an open-type transformer, a card-type current transformer) has the characteristics of small volume, light weight, openability, convenience in installation and the like, and the open-type current transformer 101 can be directly clamped on a cable to be tested when the open-type current transformer 101 is installed. For example, in a low-voltage distribution area, the power transmission line generally includes three lines respectively representing three phases a, B, and C and a neutral line N, the cables to be measured are three-phase lines a, B, and C, and the open-type current transformer 101 can be clamped in the three-phase lines to measure phase current information of the three-phase lines respectively.
In a possible embodiment, the node terminal 102 and the on-type current transformer 101 do not need a connection wire to transmit phase current information, the node terminal 102 may obtain phase current information detected by the on-type current transformer 101 through mutual inductance, and the phase current information obtained by the node terminal 102 from the on-type current transformer 101 is an analog signal, so the node terminal 102 may first convert the phase current information in the analog signal format into phase current information in a digital format through analog-to-digital conversion, and then transmit the phase current information in the digital format to a gateway-side device.
In a possible implementation manner, fig. 2 is a schematic structural diagram illustrating a system for multi-node electric energy metering according to an embodiment of the present disclosure, as shown in fig. 2, a wireless connection is established between the gateway-side device 20 and the node terminal 102 of the node-side device 10 through a wireless network, and the gateway-side device 20 may receive phase current information sent by the node terminal 102 of each node through the wireless connection and perform electric energy metering based on the phase current information.
In a possible implementation manner, fig. 3 is a schematic structural diagram illustrating a system for multi-node electric energy metering according to an embodiment of the present disclosure, as shown in fig. 3, the node-side device 10a may further send the phase current information to another node-side device 10b, and the other node-side device 10b forwards the phase current information to the gateway-side device 20.
In this embodiment, some node-side devices, such as the node-side device 10a, are far away from the gateway-side device 20, and the phase current information acquired by the node-side device 10a cannot be transmitted to the gateway-side device 20 through the wireless connection, in this case, the node-side device 10a may transmit the phase current information to another node-side device 10b, and the other node-side device 10b may forward the phase current information to the gateway-side device 20. Of course, the node side device 10b and the node side device 10c which are closer to the gateway side device 20 may directly transmit the current information acquired by the node side device to the gateway side device 20 through the wireless network.
It should be noted here that, in the system, the node-side devices within a preset distance range may communicate with each other.
In one possible embodiment, the node-side device 10 comprises a self-powered node-side device.
In this embodiment, in order to avoid causing a safety problem when a power failure is serious for a long time, and to ensure that the node-side device 10 can still work in case of power failure, the node-side device 10 may be configured as a self-powered node-side device 10.
In a possible implementation manner, the open-type current transformer 101 includes two magnetic coils, one of the magnetic coils is used for detecting phase current information of the cable to be tested, and the other magnetic coil is used for taking electricity through electromagnetic induction to supply power to the node terminal 102.
In this embodiment, alternating current is transmitted on the three-phase cable, one magnetic coil in the open-type current transformer 101 can take power through the principle of electromagnetic reaction, the node terminal 102 is provided with a power-taking circuit for obtaining the current signal converted by the magnetic coil of the open-type current transformer 101 and converting it into a stable dc voltage such as 3.3V, 5V or 12V, the dc voltage is used to power the node terminals 102, thus enabling self-powering of the node terminals 102, which, in turn, under the condition that the cable is electrified, the node terminal 102 is powered by mutual inductance electricity taking of a magnetic ring of the current transformer, a power line does not need to be arranged for the node terminal 102 to be connected with an external power supply for power supply, the problem that the node side equipment 10 is independently powered is solved, the circuit composition is greatly simplified, and high-integration service is provided for a power distribution station area.
In a possible embodiment, in order to ensure power supply when the cable to be tested is powered off, the node terminal 102 includes a rechargeable battery and/or a rechargeable capacitor, which is used for supplying power to the node terminal 102; and the other magnetic coil of the open-type current transformer 101 takes electricity through electromagnetic induction to charge the rechargeable battery and/or the rechargeable capacitor.
In this embodiment, the other magnetic coil of the open-type current transformer 101 obtains power through electromagnetic induction, and the dc voltage converted by the node terminal 102 can also charge a rechargeable battery and/or a rechargeable capacitor, so that when the cable to be tested is powered off, the node terminal 102 can also be powered by the rechargeable capacitor and/or a rechargeable power supply, and it is ensured that the node terminal 102 can still send the fault information to the gateway-side device 20 in time, thereby avoiding a serious consequence caused by power failure.
In a possible implementation, fig. 4 is a schematic diagram illustrating a structure of an energy-saving terminal according to an embodiment of the present disclosure, as shown in fig. 4, the node terminal 102 includes a rechargeable battery 1021 and a rechargeable capacitor 1022, and the node terminal 102 further includes a controller 1023; the controller 1023 is used for controlling the charging capacitor 1022 to supply power to the node terminal when the cable to be tested is powered off, and controlling the charging battery 1021 to supply power to the node terminal when the charging capacitor 1022 is out of power.
In this embodiment, the controller 1023 of the node terminal 102 may control the preferential use of the charging capacitor 1022 to power the node terminal, which reduces the frequency of use of the rechargeable battery 1021, increases the lifetime of the rechargeable battery 1021, and thus increases the lifetime of the node terminal 102.
In one possible embodiment, as shown in fig. 4, the node terminal 102 further includes a first time synchronization module 1024; the first time synchronization module 1024 is configured to implement time synchronization when paired with the second time synchronization module in the gateway side device 20. In this way, the gateway-side device 20 can obtain the current information of each node in real time and calculate the real-time power condition.
In one possible embodiment, as shown in fig. 4, the node terminal 102 further includes a first WIFI low power module 1025; the first WIFI module 1025 with low power consumption is configured to establish a wireless connection with a communication module in the gateway-side device 20. Communication module in this gateway side equipment 20 also can be low-power consumption WIFI module. The power consumption of the low-power-consumption WIFI module in the data transmission state and the power consumption of the low-power-consumption WIFI module in the standby state are both very low, and the power consumption of the node terminal 102 can be reduced.
The present disclosure also provides a system for multi-node electric energy metering, as shown in fig. 2, the system includes a node-side device 10 and a gateway-side device 20, and the node-side device 10 includes any one of the node-side devices 10 disclosed in the above embodiments.
In a possible implementation manner, the system is mainly used for electric energy collection and monitoring of a low-voltage distribution area, the low-voltage distribution area may provide electric energy of a distribution station to each power consumer through each distribution node, in order to collect and monitor electric energy of the low-voltage distribution area, node-side devices 10 need to be arranged at each node, the node-side devices 10 are bound with one gateway-side device 20, the node-side device 10 collects phase current information and then sends the phase current information to the gateway-side device 20, and the gateway-side device 20 performs electric energy metering.
In a possible embodiment, as shown in fig. 1, the node-side device 10 includes an on-type current transformer 101 and a node terminal 102, the on-type current transformer 101 is installed on a cable to be tested at a node, and is used for detecting phase current information of the cable to be tested; and the node terminal 102 is configured to obtain phase current information detected by the open-type current transformer 101 through mutual inductance, and send the phase current information to the gateway side device 20.
In a possible implementation manner, since the three-phase voltages of different power distribution nodes are the same, and the phase currents of different power distribution nodes are different, the gateway side device 20 may collect the three-phase voltage information at the power distribution initial point, and may perform electric energy metering based on the three-phase voltage information and the phase current information of each node, for example, calculate parameters such as electric energy and power of each node, so that the operation and maintenance staff can better grasp the electric energy consumption of each key node; the phase current information of each node can be merged to calculate the total power consumption of the power distribution system, and the like.
The present disclosure also provides a method for multi-node power metering, and fig. 5 shows a flow chart of the method for multi-node power metering according to an embodiment of the present disclosure, which is applied to the node-side device described above, as shown in fig. 5, the method includes the following steps:
in step S501, phase current information detected by the on-type current transformer is acquired;
in step S502, the phase current information is sent to a gateway side device, so that the gateway side device performs electric energy metering according to the phase current information.
In a possible embodiment, as shown in fig. 1 to 4, the node terminal 102 and the on-type current transformer 101 do not need to be connected by a wire to transmit phase current information, the node terminal 102 may obtain phase current information detected by the on-type current transformer 101 through mutual inductance, and the phase current information obtained by the node terminal 102 from the on-type current transformer 101 is an analog signal, so that the node terminal 102 may first convert the phase current information in the analog signal format into phase current information in a digital format through analog-to-digital conversion, and then transmit the phase current information in the digital format to the gateway-side device 20.
Optionally, the node terminal 102 may send the phase current information to the gateway-side device 20 through the first low-power-consumption WIFI module 1025.
Optionally, when the node terminal 102 is paired with the second time synchronization module in the gateway-side device 20 through the first time synchronization module 1024, time synchronization between the node terminal 102 and the gateway-side device 20 is realized, so that the gateway-side device 20 can obtain current information of each node in real time and calculate to obtain a real-time power condition.
In a possible implementation, the step S502 of the method of sending the phase current information to the gateway-side device may include the following steps:
and sending the phase current information to node terminals of other node side equipment so that the node terminals of the other node side equipment can forward the phase current information to gateway side equipment.
In this embodiment, as shown in fig. 3, some node-side devices, such as the node-side device 10a, are far from the gateway-side device 20, and the phase current information acquired by the node-side device 10a cannot be transmitted to the gateway-side device 20 through the wireless connection, in this case, the node-side device 10a may transmit the phase current information to another node-side device 10b, and the other node-side device 10b may forward the phase current information to the gateway-side device 20. Of course, the node side devices 10b and 10c closer to the gateway side device 20 may directly transmit the current information acquired by the node side device to the gateway side device 20 through the wireless network.
It should be noted here that, in the system, the node-side devices within a preset distance range may communicate with each other.
In one possible embodiment, the method may further include:
when the cable to be measured is powered off, the charging capacitor is controlled to supply power to the node terminal, and when the charging capacitor is out of power, the charging battery is controlled to supply power to the node terminal.
In this embodiment, in order to ensure power supply when the cable to be tested is powered off, the node terminal 102 includes a rechargeable battery and a rechargeable capacitor, and the rechargeable battery and the rechargeable capacitor are used for supplying power to the node terminal 102; and the other magnetic coil of the open-type current transformer 101 takes electricity through electromagnetic induction to charge the rechargeable battery and the rechargeable capacitor.
In this embodiment, the controller 1023 of the node terminal 102 may control the preferential use of the charging capacitor 1022 to power the node terminal, which reduces the frequency of use of the rechargeable battery 1021, increases the lifetime of the rechargeable battery 1021, and thus increases the lifetime of the node terminal 102.
The present disclosure also provides a method for multi-node power metering, fig. 6 shows a flow chart of the method for multi-node power metering according to an embodiment of the present disclosure, the method is applied to the system described above, as shown in fig. 6, the method includes the following steps:
in step S601, the node terminal acquires phase current information detected by the on-type current transformer, and sends the phase current information to the gateway side device;
in step S602, the gateway side device receives the phase current information sent by the node terminal, collects phase voltage information of each phase, and performs electric energy metering based on the phase voltage information of each phase and the phase current information of each node.
In a possible embodiment, the system for multi-node electric energy metering is mainly used for electric energy collection and monitoring of a low-voltage distribution substation, the low-voltage distribution substation can provide electric energy of a distribution substation to each power consumer through each distribution node, in order to collect and monitor electric energy of the low-voltage distribution substation, node-side devices 10 need to be arranged at each node, one gateway-side device 20 is bound to the node-side devices 10, the node-side devices 10 collect phase current information and then send the phase current information to the gateway-side device 20, and the gateway-side device 20 performs electric energy metering.
In a possible embodiment, as shown in fig. 1, the node-side device 10 includes an on-type current transformer 101 and a node terminal 102, the on-type current transformer 101 is installed on a cable to be tested at a node, and is used for detecting phase current information of the cable to be tested; and the node terminal 102 is configured to acquire phase current information detected by the open-type current transformer 101 through mutual inductance, and send the phase current information to the gateway side device 20.
In a possible implementation manner, since the three-phase voltages of different power distribution nodes are the same and the phase currents of different power distribution nodes are different, the gateway side device 20 may acquire three-phase voltage information at a power distribution initial point, and may perform electric energy metering based on the three-phase voltage information and the phase current information of each node, for example, calculate parameters such as electric energy, power and the like of each node, so that operation and maintenance personnel can better grasp the electric energy consumption of each key node; the phase current information of each node can be merged to calculate the total power consumption of the power distribution system, and the like.
The present disclosure also provides an apparatus for multi-node power metering, and fig. 7 shows a block diagram of the apparatus for multi-node power metering according to an embodiment of the present disclosure, as shown in fig. 7, applied to the node-side device described above, the apparatus including:
an obtaining module 701 configured to obtain phase current information detected by an on-type current transformer;
a sending module 702, configured to send the phase current information to a gateway side device, so that the gateway side device performs electric energy metering according to the phase current information.
In one possible implementation, the sending module 702 is configured to:
and sending the phase current information to node terminals of other node side equipment so that the node terminals of the other node side equipment can forward the phase current information to gateway side equipment.
Technical terms and technical features mentioned in the embodiment of the present apparatus are the same as or similar to those in fig. 1 to 5 and the related embodiment, and for the explanation and description of the technical terms and technical features mentioned in the embodiment of the present apparatus, reference may be made to the above explanation of fig. 1 to 5 and the related embodiment, and detailed description thereof is omitted here.
The present disclosure also discloses an electronic device, and fig. 8 shows a block diagram of the electronic device according to an embodiment of the present disclosure.
As shown in fig. 8, the electronic device 800 comprises a memory 801 and a processor 802, wherein the memory 801 is configured to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor 802 to implement a method according to an embodiment of the present disclosure.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units or modules described in the embodiments of the present disclosure may be implemented by software or by programmable hardware. The units or modules described may also be provided in a processor, and the names of the units or modules do not in some cases constitute a limitation of the units or modules themselves.
As another aspect, the present disclosure also provides a computer-readable storage medium, which may be a computer-readable storage medium included in the electronic device or the computer system in the above embodiments; or it may be a separate computer readable storage medium not incorporated into the device. The computer readable storage medium stores one or more programs for use by one or more processors in performing the methods described in the present disclosure.
The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention in the present disclosure is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is possible without departing from the inventive concept. For example, the above features and (but not limited to) the features disclosed in this disclosure having similar functions are replaced with each other to form the technical solution.
Claims (16)
1. A node side apparatus for multi-node power metering, comprising:
the open-type current transformer is arranged on a cable to be detected at a node and is used for detecting phase current information of the cable to be detected;
and the node terminal is used for acquiring the phase current information detected by the open-type current transformer through mutual inductance and sending the phase current information to the gateway side equipment.
2. The node-side apparatus of claim 1,
and the node side equipment is used for sending the phase current information to other node side equipment, and the other node side equipment forwards the phase current information to the gateway side equipment.
3. The node-side device of claim 1, wherein the node-side device comprises a self-powered node-side device.
4. The node side equipment according to claim 3, wherein the open-type current transformer comprises two magnetic coils, one of the magnetic coils is used for detecting phase current information of the cable to be tested, and the other magnetic coil is used for getting electricity through electromagnetic induction to supply power to the node terminal.
5. The node side device according to claim 4, wherein the node terminal comprises a rechargeable battery and/or a rechargeable capacitor for supplying power to the node terminal;
and the other magnetic coil of the open-type current transformer obtains electricity through electromagnetic induction to charge the rechargeable battery and/or the rechargeable capacitor.
6. The node-side device of claim 5, wherein the node terminal comprises a rechargeable battery and a rechargeable capacitor, the node terminal further comprising a controller;
the controller is used for controlling the charging capacitor to supply power to the node terminal when the cable to be tested is powered off, and controlling the charging battery to supply power to the node terminal when the charging capacitor is not electrified.
7. The node-side device of claim 1, wherein the node terminal further comprises a first time synchronization module;
and the first time synchronization module is used for synchronizing time with a second time synchronization module in the gateway side equipment to realize time synchronization.
8. The node-side device of any one of claims 1 to 5, wherein the node terminal further comprises a first low-power wireless fidelity (WIFI) module;
the first low-power-consumption WIFI module is used for establishing wireless connection with a second low-power-consumption WIFI module in the gateway side equipment.
9. A system for multinode power metering, comprising the node-side device and the gateway-side device of any one of claims 1 to 8, wherein:
the gateway side equipment is wirelessly connected with the node terminal in the node side equipment and is used for receiving the phase current information sent by the node terminal, acquiring the phase current information of each phase and metering electric energy based on the phase current information of each phase and each node.
10. A method for multi-node electric energy metering, which is applied to the node side equipment of any one of claims 1 to 8, and comprises the following steps:
acquiring phase current information detected by an open-type current transformer;
and sending the phase current information to gateway side equipment so that the gateway side equipment can measure electric energy according to the phase current information.
11. The method of claim 10, wherein sending the phase current information to a gateway-side device comprises:
and sending the phase current information to node terminals of other node side equipment so that the node terminals of the other node side equipment can forward the phase current information to gateway side equipment.
12. A method for multinode power metering, applied to the system of claim 9, the method comprising:
the node terminal acquires phase current information detected by the open-type current transformer and sends the phase current information to gateway side equipment;
and the gateway side equipment receives the phase current information sent by the node terminal, acquires the phase current information of each phase, and measures the electric energy based on the phase current information of each phase and each node.
13. An apparatus for multi-node electric energy metering, applied to the node side device of any one of claims 1 to 8, the apparatus comprising:
the acquisition module is configured to acquire phase current information detected by the open-type current transformer;
the sending module is configured to send the phase current information to gateway side equipment so that the gateway side equipment can measure electric energy according to the phase current information.
14. The apparatus of claim 13, wherein the transmitting module is configured to:
and sending the phase current information to node terminals of other node side equipment so that the node terminals of the other node side equipment can forward the phase current information to gateway side equipment.
15. An electronic device comprising a memory and a processor, wherein the memory is configured to store one or more computer instructions that are executed by the processor to perform the method steps of any of claims 10 to 12.
16. A readable storage medium, characterized in that computer instructions are stored thereon, which computer instructions, when executed by a processor, carry out the method steps of any of claims 10 to 12.
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