CN217385645U - Electric quantity detection device of low-voltage cable - Google Patents
Electric quantity detection device of low-voltage cable Download PDFInfo
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- CN217385645U CN217385645U CN202220222525.XU CN202220222525U CN217385645U CN 217385645 U CN217385645 U CN 217385645U CN 202220222525 U CN202220222525 U CN 202220222525U CN 217385645 U CN217385645 U CN 217385645U
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- voltage cable
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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 cable electric quantity detection device, belonging to the technical field of low-voltage cable electric quantity detection devices; the technical problem to be solved is as follows: the improvement of the hardware structure of the electric quantity detection device of the low-voltage cable is provided; the technical scheme for solving the technical problems is as follows: the power supply device comprises an electric quantity acquisition device, wherein the input end of the electric quantity acquisition device is connected with a current acquisition module which is sleeved on a three-phase load line of a low-voltage cable through a first test wire, the input end of the electric quantity acquisition device is also connected with a branch line of the low-voltage cable through a second test wire, and the power supply end of the electric quantity acquisition device is connected with the low-voltage cable through a power converter; the electric quantity acquisition device is internally provided with a control circuit board, a microcontroller is integrated on the control circuit board, the microcontroller is respectively connected with an electric quantity metering module through a lead, and the electric quantity metering module acquires three-phase current of a low-voltage cable, a branch line voltage value of the low-voltage cable and a phase voltage value; the utility model discloses be applied to low tension cable.
Description
Technical Field
The utility model relates to a low tension cable's electric quantity detection device belongs to low tension cable's electric quantity detection device technical field.
Background
The low-voltage transformer area line loss rate can represent the management level of a power supply enterprise to the low-voltage transformer area, the low-voltage transformer area is numerous and the power grid connection relation is complex, the alternating current 220-380V low-voltage lines of most urban network low-voltage transformer areas are buried cables, the low-voltage transformer area line loss rate is increased due to cable leakage, private power stealing of users and the like, and certain difficulty is caused to the investigation of workers when the conditions of power stealing or single-phase grounding leakage occur.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome not enough that exists among the prior art, the technical problem that will solve is: the improvement of the structure of the electric quantity detection device of the low-voltage cable is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: the electric quantity detection device of the low-voltage cable comprises an electric quantity acquisition device, wherein the input end of the electric quantity acquisition device is connected with a current acquisition module through a first test lead, the current acquisition module is sleeved on an A, B, C three-phase load line of the low-voltage cable, the input end of the electric quantity acquisition device is also connected with a A, B, C, N branching line of the low-voltage cable through a second test lead respectively, and the power supply end of the electric quantity acquisition device is connected with the low-voltage cable through a power converter;
the power acquisition device is characterized in that a control circuit board is arranged in the power acquisition device, a microcontroller is integrated on the control circuit board, the microcontroller is respectively connected with three power metering modules through leads, the input ends of the three power metering modules are respectively connected with a current acquisition module for acquiring the three-phase current of a low-voltage cable A, B, C and a second test lead for acquiring the branch line voltage value and the phase voltage value of the low-voltage cable A, B, C, N, and the microcontroller is also respectively connected with a storage module, a GSM module and an RS485 communication module through leads;
be provided with pilot lamp and dial switch on the casing of electric quantity collection device, be provided with external antenna on electric quantity collection device's the casing, external antenna is connected with the GSM module.
The GSM module is connected with an SIM card interface through a wire, an SIM card is inserted into the SIM interface, data transmission between the electric quantity acquisition device and the cloud server is achieved through the SIM card, and the cloud server is connected with the client through a wire.
The electric quantity acquisition device is provided with an RS485 interface and is connected with the electric quantity acquisition device and the local control host through an RS485 bus.
The power converter converts AC220V into a DC24V power supply, the DC24V power supply outputs 5V direct current to supply power to the storage module, the microcontroller and the electricity metering module through a 5V three-terminal voltage regulator, and the DC24V power supply outputs 12V direct current to supply power to the GSM module through a 12V three-terminal voltage regulator.
The current acquisition module specifically adopts an open low-voltage current transformer or an open low-voltage pincerlike current clamp.
The current acquisition module is specifically installed at the head end and the tail end of the low-voltage cable or a multi-point branch line to acquire a real-time current value.
The microcontroller specifically adopts a single chip microcomputer with the model number of AT89C 51;
the memory module specifically adopts a memory chip with the model number of 24C 16;
the GSM module specifically adopts a communication module with the model number TC 35;
the electric quantity metering module specifically adopts a control chip with the model number of CS 5463.
The electric quantity acquisition device is also provided with a reset key.
The first test wire is specifically designed into a model specification of DCC-2 core 4mm 2 The power test special lead of (2);
the second test wire is specifically designed into a model of DCC-4 core 2.5mm 2 The special wire for electric power test.
The utility model discloses beneficial effect for prior art possesses does: the utility model provides a low tension cable's electric quantity detection device is convenient for in time seek above problem. When the device is specifically searched, numerical values such as real-time current, voltage, power, loss and the like can be obtained only by installing the device at the head end and the tail end of the low-voltage cable or multi-point branch lines, and then whether electricity stealing or single-phase grounding electricity leakage exists or not is judged; and can dismantle immediately after the investigation work is finished, have characteristics such as safe and reliable, work efficiency height of use.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic structural view of the present invention;
fig. 2 and 3 are schematic diagrams of the circuit connection of the present invention;
FIG. 4 is a schematic diagram of the junction circuit of the present invention;
in the figure: 1 is low tension cable, 2 is electric quantity collection system, 3 is power converter, 4 is the pilot lamp, 5 is dial switch, 6 is RS485 communication interface, 7 is external antenna, 8 is the electric current collection module, 9 is the high in the clouds server, 10 is the customer end, 11 is local control host computer, 12 is first test wire, 13 is the second test wire.
Detailed Description
As shown in fig. 1 to 4, the utility model relates to an electric quantity detection device for low-voltage cable, including electric quantity collection device 2, the input end of electric quantity collection device 2 is connected with current collection module 8 through first test wire 12, current collection module 8 cup joints on A, B, C three-phase load line of low-voltage cable 1, the input end of electric quantity collection device 2 still connects A, B, C, N separated time of low-voltage cable 1 through second test wire 13 respectively, the power end of electric quantity collection device 2 links to each other with low-voltage cable 1 through power converter 3;
the electric quantity acquisition device 2 is internally provided with a control circuit board, a microcontroller is integrated on the control circuit board, the microcontroller is respectively connected with three electric quantity metering modules through leads, the input ends of the three electric quantity metering modules are respectively connected with a current acquisition module 8 for acquiring three-phase current of a low-voltage cable A, B, C and a second test lead 13 for acquiring branch line voltage values and phase voltage values of the low-voltage cable A, B, C, N, and the microcontroller is also respectively connected with a storage module, a GSM module and an RS485 communication module through leads;
be provided with pilot lamp 4 and dial switch 5 on the casing of electric quantity collection device 2, be provided with external antenna 7 on the casing of electric quantity collection device 2, external antenna 7 is connected with the GSM module.
The GSM module is connected with an SIM card interface through a wire, an SIM card is inserted into the SIM interface, data transmission between the electric quantity acquisition device 2 and the cloud server 9 is achieved through the SIM card, and the cloud server 9 is connected with the client 10 through a wire.
The electric quantity acquisition device 2 is provided with an RS485 interface 6, and the electric quantity acquisition device 2 and the local control host 11 are connected through an RS485 bus.
The power converter 3 converts AC220V into DC24V power, the DC24V power outputs 5V direct current to the storage module, the microcontroller and the electricity metering module through a 5V three-terminal voltage regulator for supplying power, and the DC24V power outputs 12V direct current to the GSM module through a 12V three-terminal voltage regulator for supplying power.
The current collection module 8 specifically adopts an open low-voltage current transformer or an open low-voltage pincer-shaped current clamp.
The current acquisition module 8 is specifically installed at the head end and the tail end of the low-voltage cable 1 or a multi-point branch line to acquire a real-time current value.
The microcontroller specifically adopts a single chip microcomputer with the model number of AT89C 51-24 JC-PLCC 44;
the memory module specifically adopts a memory chip with the model number of 24C 16;
the GSM module specifically adopts a communication module with the model number TC35, and the TC35 communication module has the GSM communication function and the GPS positioning function on one hand, and is a wireless transmission module with comprehensive performance;
the electric quantity metering module specifically adopts a control chip with the model number of CS 5463.
The electric quantity acquisition device 2 is also provided with a reset key.
The first test wire 12 is specifically designed to have a model specification of DCC-2 core 4mm 2 The power test special lead of (2);
the second test wire 13 is of a model of DCC-4 core 2.5mm 2 The special wire for power test.
The utility model aims to effectively use electron technology theory, signal transmission theory etc. develop a detection device of low voltage cable electric quantity. The device mainly comprises a current acquisition module 8, an electric quantity acquisition device 2, a power supply, a special connecting wire, a cloud server 9 and a client 10, and the specific description of each part is as follows.
1. The current acquisition module 8 adopts an open low-voltage current transformer or a low-voltage pincerlike current clamp (0.5 s level): and acquiring multipoint current values of the head end and the tail end of the low-voltage cable or the cable branch.
2. The electric quantity acquisition device 2 specifically sets up the three-phase electric quantity acquisition of wireless type: the method carries out full parameter measurement on the alternating current three-phase loop, and has the functions of GPS positioning and relay output control; the measured parameters obtained through measurement comprise phase voltage, line voltage, phase current and line current, the active power, reactive power, power factor, electric energy and accumulated electric energy of the low-voltage cable are obtained through calculation through the measured parameters, and the active power, reactive power, power factor, electric energy and accumulated electric energy are displayed on a display screen of the electric quantity acquisition device, so that the accuracy is high, and the stability is good; meanwhile, the electric quantity acquisition device of the utility model carries out electromagnetic isolation processing on the circuit board, and has strong anti-interference capability; the utility model discloses an electric quantity collection system has configured the RS485 interface of the same kind, makes things convenient for local communication to measure, and data adopt Modbus-RTU communication protocol to realize network transmission.
3. Power supply: the AC-DC voltage converter provides 24V DC power supply for the electric quantity acquisition device.
4. Special connecting wires: provide low pressure alternating voltage for electric quantity collection system and connect, the current test adopts: DCC-2 core 4mm 2 Special wire for power test. The voltage test adopts: DCC-4 core 2.5mm 2 Special wire for power test. The low-voltage range of the low-voltage cable is as follows: and alternating current is 220-380V.
5. And (3) moving the SIM card: and carrying out data exchange and transmission by utilizing the mobile public network.
6. Connecting an antenna externally: and providing a signal amplification function for the mobile SIM card.
7. Cloud server: and uploading the numerical values of the data sampler on a cloud server by using a mobile public network for integrated calculation and storage.
8. The client serves as a user terminal APP: and displaying the values of the measured current, voltage, power, loss and the like.
The device is arranged at the head end and the tail end of a low-voltage cable, at least 2 sets of devices are arranged as a group of test units, the installation conditions can be in power failure or electrified installation, the data acquisition time period is once every minute, and the open low-voltage current transformer or the low-voltage pincerlike current clamp can be selected and matched with different transformation ratios according to the actual load of the low-voltage current to be measured. After relevant safety measures are taken on site, an open low-voltage current transformer or a low-voltage pincerlike current clamp is firstly sleeved on A, B, C three-phase load lines at the head end and the tail end of a low-voltage cable respectively, the low-voltage current transformer or the low-voltage pincerlike current clamp is connected to the input end of an electric quantity acquisition device through a first test lead 12 and used for acquiring a split-phase current value and sending the split-phase current value to the electric quantity acquisition device, and a second test lead 13 is connected to A, B, C, N split lines at the head end and the tail end of the low-voltage cable and used for providing a line voltage value, a phase voltage value and a working power supply for the electric quantity acquisition device. Voltage sampling must be accessed in positive phase sequence and correspond to an open low voltage current transformer or an open low voltage split-core current clamp, otherwise power and accuracy of power factor calculation are affected. After the above steps are completed, the indicator lamp working indicator lamp 4 on the electric quantity acquisition device begins to flicker, the equipment begins to work normally, the acquired data begins to be accessed into the mobile public network by using the mobile SIM card and uploaded to the cloud server 9 for data integration calculation and storage, and then the client 10 is used for displaying the numerical values of actually measured current, voltage, power, loss and the like.
About the utility model discloses what the concrete structure needs to explain, the utility model discloses a each part module connection relation each other is definite, can realize, except that the special explanation in the embodiment, corresponding technological effect can be brought to its specific connection relation to based on do not rely on under the prerequisite of corresponding software program execution, solve the utility model provides a technical problem, the utility model discloses except that the model, the connected mode of the part that appear, module, concrete components and parts, all belong to the prior art such as the published patent that can acquire in the field of technical staff at the application day ahead, published journal thesis, or common general knowledge, need not to describe repeatedly for the technical scheme that the present case provided is clear, complete, can realize, and can reappear or obtain corresponding entity product according to this technical means.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. The utility model provides an electric quantity detection device of low tension cable, includes electric quantity collection system, its characterized in that: the input end of the electric quantity acquisition device is connected with a current acquisition module through a first test lead, the current acquisition module is sleeved on an A, B, C three-phase load line of the low-voltage cable, the input end of the electric quantity acquisition device is also connected with a A, B, C, N branch line of the low-voltage cable through a second test lead, and the power supply end of the electric quantity acquisition device is connected with the low-voltage cable through a power converter;
the power acquisition device is characterized in that a control circuit board is arranged in the power acquisition device, a microcontroller is integrated on the control circuit board, the microcontroller is respectively connected with three power metering modules through leads, the input ends of the three power metering modules are respectively connected with a current acquisition module for acquiring the three-phase current of a low-voltage cable A, B, C and a second test lead for acquiring the branch line voltage value and the phase voltage value of the low-voltage cable A, B, C, N, and the microcontroller is also respectively connected with a storage module, a GSM module and an RS485 communication module through leads;
the intelligent power supply comprises an electric quantity acquisition device and is characterized in that an indicator lamp and a dial switch are arranged on a shell of the electric quantity acquisition device, an external antenna is arranged on the shell of the electric quantity acquisition device, and the external antenna is connected with a GSM module.
2. The device for detecting the electric quantity of the low-voltage cable according to claim 1, wherein: the GSM module is connected with an SIM card interface through a wire, an SIM card is inserted into the SIM interface, data transmission between the electric quantity acquisition device and the cloud server is achieved through the SIM card, and the cloud server is connected with the client through a wire.
3. The device for detecting the electric quantity of the low-voltage cable according to claim 1, wherein: the electric quantity acquisition device is provided with an RS485 interface and is connected with the electric quantity acquisition device and the local control host through an RS485 bus.
4. The device for detecting the electric quantity of the low-voltage cable according to claim 1, wherein: the power converter converts AC220V into a DC24V power supply, the DC24V power supply outputs 5V direct current to supply power to the storage module, the microcontroller and the electricity metering module through a 5V three-terminal voltage regulator, and the DC24V power supply outputs 12V direct current to supply power to the GSM module through a 12V three-terminal voltage regulator.
5. The device for detecting the electric quantity of the low-voltage cable according to claim 1, wherein: the current acquisition module specifically adopts an open low-voltage current transformer or an open low-voltage pincerlike current clamp.
6. The device for detecting the electric quantity of the low-voltage cable according to claim 5, wherein: the current acquisition module is specifically installed at the head end and the tail end of the low-voltage cable or a multi-point branch line to acquire a real-time current value.
7. The device for detecting the electric quantity of the low-voltage cable according to claim 1, wherein: the microcontroller specifically adopts a singlechip with the model number of AT89C 51;
the memory module specifically adopts a memory chip with the model number of 24C 16;
the GSM module specifically adopts a communication module with the model number TC 35;
the electric quantity metering module specifically adopts a control chip with the model number of CS 5463.
8. The device for detecting the electric quantity of the low-voltage cable according to claim 1, wherein: the electric quantity acquisition device is also provided with a reset key.
9. The device for detecting the electric quantity of the low-voltage cable according to claim 1, wherein: the first test wire is specifically designed into a model specification of DCC-2 core 4mm 2 The power test special lead of (2);
the second test wire is specifically designed into a model of DCC-4 core 2.5mm 2 The special wire for power test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220222525.XU CN217385645U (en) | 2022-01-27 | 2022-01-27 | Electric quantity detection device of low-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220222525.XU CN217385645U (en) | 2022-01-27 | 2022-01-27 | Electric quantity detection device of low-voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217385645U true CN217385645U (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220222525.XU Active CN217385645U (en) | 2022-01-27 | 2022-01-27 | Electric quantity detection device of low-voltage cable |
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| Country | Link |
|---|---|
| CN (1) | CN217385645U (en) |
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- 2022-01-27 CN CN202220222525.XU patent/CN217385645U/en active Active
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