CN215267790U - Low-voltage distribution network intelligent branch line monitoring device - Google Patents

Low-voltage distribution network intelligent branch line monitoring device Download PDF

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Publication number
CN215267790U
CN215267790U CN202121656983.6U CN202121656983U CN215267790U CN 215267790 U CN215267790 U CN 215267790U CN 202121656983 U CN202121656983 U CN 202121656983U CN 215267790 U CN215267790 U CN 215267790U
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China
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module
low
branch line
voltage
distribution network
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CN202121656983.6U
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杨志淳
杨帆
沈煜
雷杨
胡伟
宿磊
唐泽洋
胡成奕
蒋伟
饶玮
严方彬
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State Grid Hubei Electric Power Co Ltd
Electric Power Research Institute of State Grid Hubei Electric Power Co Ltd
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State Grid Hubei Electric Power Co Ltd
Electric Power Research Institute of State Grid Hubei Electric Power Co Ltd
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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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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 provides an intelligent branch line monitoring device for a low-voltage distribution network, which comprises a CPU processing module, a power module connected with the CPU processing module, a communication and network security module, a man-machine interaction module and an acquisition module; the acquisition module comprises an electrical state quantity acquisition module and an operation state acquisition module, and the electrical state acquisition module comprises a voltage transformer and a measurement protection double-winding current transformer and is used for acquiring the voltage, current, active power, reactive power, power factor and leakage current of the incoming and outgoing lines of the low-voltage branch line; the running state acquisition module is used for acquiring the states and action signals of the incoming and outgoing line switches of the low-voltage branch lines. The utility model discloses a low voltage distribution network state perception extends to the low pressure user from distribution transformer platform district, has improved low pressure distribution lines fortune and has examined lean management level, salvagees for distribution network initiative service and high efficiency and provides powerful technical support.

Description

Low-voltage distribution network intelligent branch line monitoring device
Technical Field
The utility model relates to a distribution network technical field, in particular to are low-voltage distribution network intelligence branch circuit monitoring devices.
Background
The construction and application of the distribution automation which is widely developed at present mainly focuses on the automatic transformation of a 10kV distribution network, and the observable, measurable and partially controllable distribution of a medium-voltage distribution network is realized. The low-voltage distribution network has the advantages of wide line distribution and complex operation environment, and operation monitoring means are lacked for a long time, so that operation and maintenance personnel cannot timely and effectively master the operation state of the low-voltage distribution network.
In order to improve the operation monitoring capability of a low-voltage power distribution network, the low-voltage internet of things technology comes up, and intelligent operation and distribution integration terminals are deployed in a distribution transformer area, so that local state information of the distribution transformer area is collected, and the intelligent electric meter information of a user is collected through interaction with a concentrator. In order to monitor the low-voltage branch line between the local region of the transformer area and the user intelligent electric meter, it is necessary to develop and deploy an intelligent low-voltage branch line monitoring device, so that the full-range operation state control of the local region of the transformer area and the user intelligent electric meter is realized, the informatization level of the low-voltage distribution network is improved, and the power supply service capability of operation and maintenance personnel is improved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a low voltage distribution network intelligence branch line monitoring devices has solved the difficult problem of low voltage distribution network running state management and control, has promoted the safety and stability operation level of low voltage distribution network.
The utility model adopts the following technical scheme:
a low voltage distribution network intelligence branch line monitoring devices includes: the system comprises a CPU processing module, a power supply module connected with the CPU processing module, a communication and network security module, a man-machine interaction module and an acquisition module;
the acquisition module comprises an electrical state quantity acquisition module and an operation state acquisition module, and the electrical state acquisition module comprises a voltage transformer and a measurement protection double-winding current transformer and is used for acquiring the voltage, current, active power, reactive power, power factor and leakage current of the incoming and outgoing lines of the low-voltage branch line; the running state acquisition module is used for acquiring the states and action signals of the incoming and outgoing line switches of the low-voltage branch line;
the communication and network security module is connected with a communication interface in the CPU processing module, the communication and network security module comprises a power line carrier communication module, a wireless communication module, an RS485 communication module and a security encryption chip, and the power line carrier communication module and the wireless communication module are used for being in communication connection with the intelligent marketing and distribution convergence terminal.
Furthermore, the intelligent branch line monitoring device further comprises a self-checking module connected with the CPU processing module, wherein the self-checking module comprises a logic judgment module and an abnormal signal analysis module, and is used for self-checking when the intelligent branch line monitoring device runs and sending alarm information in time after internal running faults are detected.
Further, CPU processing module includes central processing unit, the data storage and analysis module be connected with central processing unit, clock module, reset module, debugging module and interface, power source, communication interface, human-computer interaction module interface, collection interface, self-checking interface, power source is used for being connected with power source, human-computer interaction module interface is used for being connected with human-computer interaction module, the collection interface is used for being connected with collection module, self-checking interface is used for being connected with self-checking module.
Furthermore, the power module comprises a main power supply, a standby power supply and a power switching module connected with the main power supply and the standby power supply, and is used for supplying power to the CPU processing module and the collection module, the communication and network security module, the human-computer interaction module, the topology identification module and the self-checking module which are connected with the CPU processing module.
Furthermore, the human-computer interaction module comprises a display screen, an operation indicator light and a button; the display screen is used for displaying the electrical state data and the running state acquired by the acquisition module, configuring functions and setting parameters; the operation indicator light is used for displaying the charged state, the power-off state and the alarm state of the device; the buttons are used for selection and configuration of functions and parameters.
The system further comprises a topology identification module connected with the CPU processing module, wherein the CPU processing module comprises a topology identification interface connected with the central processing unit, the topology identification interface is used for being connected with the topology identification module, and the topology identification module comprises an information sending device and a signal receiving device and is used for sending or receiving and judging characteristic signals when a low-voltage distribution network area carries out topology identification through a characteristic signal method.
Furthermore, the intelligent branch line monitoring device for the low-voltage distribution network is used for monitoring the outgoing electric quantity and the state quantity of the low-voltage distribution line, the outgoing electric quantity and the state quantity are uploaded to the intelligent operation and distribution integration terminal in a carrier wave or wireless communication mode, and the received outgoing electric quantity and the received state quantity are uploaded to the distribution automation main station by the intelligent operation and distribution integration terminal.
The technical advantages of the utility model are that: the state perception of the low-voltage distribution network is extended to low-voltage users from a distribution transformer area, the lean management level of low-voltage distribution line operation and detection is improved, and powerful technical support is provided for active service and efficient first-aid repair of the distribution network.
Drawings
Fig. 1 is the utility model relates to a low voltage distribution network intelligence branch circuit monitoring devices schematic structure.
Fig. 2 is the utility model discloses low voltage distribution network intelligence branch line monitoring devices monitors time measuring system layout schematic diagram.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and the specific embodiments of the present invention.
As shown in fig. 1, the embodiment of the utility model provides a low voltage distribution network intelligence branch line monitoring devices, include: the system comprises a CPU processing module, a power supply module connected with the CPU processing module, a communication and network security module, a man-machine interaction module, a topology identification module, a self-checking module and an acquisition module.
The CPU processing module comprises a central processing unit, a data storage and analysis module, a clock module, a reset module, a debugging module and interface, a power interface, a communication interface, a man-machine interaction module interface, a collection interface, a topology identification interface and a self-checking interface, wherein the data storage and analysis module, the clock module, the reset module, the debugging module and interface, the power interface, the communication interface, the man-machine interaction module interface, the collection interface, the topology identification interface and the self-checking interface are connected with the central processing unit.
The power supply module comprises a main power supply source, a standby power supply and a power supply switching module connected with the main power supply source and the standby power supply, and is used for supplying power to the CPU processing module and an acquisition module, a communication and network security module, a man-machine interaction module, a topology identification module and a self-checking module which are connected with the CPU processing module.
The acquisition module comprises an electrical state quantity acquisition module and an operation state acquisition module, wherein the electrical state acquisition module comprises a voltage transformer and a measurement protection double-winding current transformer and is used for acquiring electrical quantities such as the voltage, current, active power, reactive power, power factor, leakage current and the like of an inlet and outlet line of a low-voltage branch line; the running state acquisition module is used for acquiring the states and action signals of the incoming and outgoing line switches of the low-voltage branch lines.
The communication and network security module is connected with a communication interface in the CPU processing module, comprises a power line carrier communication module, a wireless communication module, an RS485 communication module and a security encryption chip, and supports automatic or manual switching between two communication modes.
The human-computer interaction module is connected with a human-computer interaction module interface in the CPU processing module and comprises a display screen, an operation indicator light and a button; the display screen is used for displaying the electrical state data and the running state acquired by the acquisition module, configuring functions and setting parameters; the operation indicator light is used for displaying the charged state, the power-off state and the alarm state of the device; the buttons are used for selection and configuration of functions and parameters.
The topology identification module comprises an information sending device and a signal receiving device and is used for sending or receiving and judging the characteristic signals when the low-voltage distribution network area carries out topology identification through a characteristic signal method.
The self-checking module comprises a logic judgment module and an abnormal signal analysis module, is used for self-checking when the intelligent branch line monitoring device operates, and timely sends out alarm information after internal operation faults are detected.
Specifically, when the intelligent branch line monitoring device for the low-voltage distribution network is used for a low-voltage distribution cabinet, the intelligent branch line monitoring device can communicate with the leakage protector and the reactive power compensation device through the RS485 communication interface to acquire leakage current, a switching state and an action signal of the leakage protector and compensation capacity information of the reactive power compensation device.
Specifically, the intelligent branch line monitoring device for the low-voltage distribution network supports a function of reporting events preferentially, the acquisition module acquires electrical quantity and state quantity of the branch line in a period of 5 minutes, and when the branch line generates a switching action signal and a fault signal, the information is preferentially transmitted to a superior intelligent operation and distribution fusion terminal.
Specifically, the communication and network security module supports signal relay, and can communicate with other surrounding intelligent branch line monitoring devices when the communication and network security module cannot communicate with a superior intelligent marketing and distribution convergence terminal.
As shown in fig. 2, the utility model provides a low voltage distribution network intelligence branch circuit monitoring devices specifically monitors implementation. The 10kV distribution line passes through a distribution transformer to generate a 400V low-voltage distribution line, and the intelligent operation and distribution integration terminal is deployed on a 400V outgoing line; meanwhile, after passing through a first node, a 400V line generates two outgoing lines, namely an incoming line 1, an outgoing line 11 and an outgoing line 12, and after passing through a second node, the outgoing line 12 generates two outgoing lines, namely an incoming line 2, an outgoing line 21 and an outgoing line 22; the intelligent branch line monitoring device 1 monitors the electrical quantity and the state quantity of the outgoing line 11 and the outgoing line 12 respectively, and the intelligent branch line monitoring device 2 monitors the electrical quantity and the state quantity of the outgoing line 21 and the outgoing line 22 respectively; the intelligent branch line monitoring device 1 and the intelligent branch line monitoring device 2 upload the electrical quantities and state quantities of the outgoing line 11, the outgoing line 12, the outgoing line 21 and the outgoing line 22 to an intelligent operation and distribution fusion terminal in a carrier wave or wireless communication mode; after receiving the information, the intelligent marketing and distribution integration terminal sends the electric quantity and the state quantity of the 400V outgoing line to the distribution automation main station together, so that the state monitoring and control of the low-voltage distribution substation area are realized.
It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that: modifications and equivalents of the embodiments of the invention may be made without departing from the scope of the invention, which is intended to be covered by the claims.

Claims (7)

1. The utility model provides a low voltage distribution network intelligence branch line monitoring devices which characterized in that includes: the system comprises a CPU processing module, a power supply module connected with the CPU processing module, a communication and network security module, a man-machine interaction module and an acquisition module;
the acquisition module comprises an electrical state quantity acquisition module and an operation state acquisition module, and the electrical state acquisition module comprises a voltage transformer and a measurement protection double-winding current transformer and is used for acquiring the voltage, current, active power, reactive power, power factor and leakage current of the incoming and outgoing lines of the low-voltage branch line; the running state acquisition module is used for acquiring the states and action signals of the incoming and outgoing line switches of the low-voltage branch line;
the communication and network security module is connected with a communication interface in the CPU processing module, the communication and network security module comprises a power line carrier communication module, a wireless communication module, an RS485 communication module and a security encryption chip, and the power line carrier communication module and the wireless communication module are used for being in communication connection with the intelligent marketing and distribution convergence terminal.
2. The intelligent branch line monitoring device for the low-voltage distribution network according to claim 1, characterized in that: the intelligent branch line monitoring device is characterized by further comprising a self-checking module connected with the CPU processing module, wherein the self-checking module comprises a logic judgment module and an abnormal signal analysis module, is used for self-checking during operation of the intelligent branch line monitoring device, and timely sends out alarm information after internal operation faults are detected.
3. The intelligent branch line monitoring device for the low-voltage distribution network according to claim 1, characterized in that: CPU processing module includes central processing unit, the data storage and analysis module be connected with central processing unit, clock module, the module that resets, debugging module and interface, power source, communication interface, man-machine interaction module interface, collection interface, self-checking interface, power source is used for being connected with power source, man-machine interaction module interface is used for being connected with man-machine interaction module, the collection interface is used for being connected with collection module, the self-checking interface is used for being connected with self-checking module.
4. The intelligent branch line monitoring device for the low-voltage distribution network according to claim 2, wherein: the power supply module comprises a main power supply source, a standby power supply and a power supply switching module connected with the main power supply source and the standby power supply, and is used for supplying power to the CPU processing module and an acquisition module, a communication and network security module, a man-machine interaction module, a topology identification module and a self-checking module which are connected with the CPU processing module.
5. The intelligent branch line monitoring device for the low-voltage distribution network according to claim 1, characterized in that: the human-computer interaction module comprises a display screen, an operation indicator light and a button; the display screen is used for displaying the electrical state data and the running state acquired by the acquisition module, configuring functions and setting parameters; the operation indicator light is used for displaying the charged state, the power-off state and the alarm state of the device; the buttons are used for selection and configuration of functions and parameters.
6. The intelligent branch line monitoring device for the low-voltage distribution network according to claim 3, wherein: the system also comprises a topology identification module connected with the CPU processing module, wherein the CPU processing module comprises a topology identification interface connected with the CPU, the topology identification interface is used for being connected with the topology identification module, and the topology identification module comprises an information sending device and a signal receiving device and is used for sending or receiving and judging characteristic signals when a low-voltage distribution network area carries out topology identification through a characteristic signal method.
7. The intelligent branch line monitoring device for the low-voltage distribution network according to claim 1, characterized in that: the intelligent branch line monitoring device for the low-voltage distribution network is used for monitoring the outgoing electric quantity and state quantity of the low-voltage distribution line, the outgoing electric quantity and state quantity are uploaded to the intelligent operation and distribution integration terminal in a carrier wave or wireless communication mode, and the received outgoing electric quantity and state quantity are uploaded to the distribution automation main station by the intelligent operation and distribution integration terminal.
CN202121656983.6U 2021-07-20 2021-07-20 Low-voltage distribution network intelligent branch line monitoring device Active CN215267790U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114325374A (en) * 2021-12-30 2022-04-12 广东电网有限责任公司 Low-voltage shunt switch monitoring device and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114325374A (en) * 2021-12-30 2022-04-12 广东电网有限责任公司 Low-voltage shunt switch monitoring device and method

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