CN210806847U - Integrated acquisition device for power distribution network line state information - Google Patents
Integrated acquisition device for power distribution network line state information Download PDFInfo
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- CN210806847U CN210806847U CN201921371103.3U CN201921371103U CN210806847U CN 210806847 U CN210806847 U CN 210806847U CN 201921371103 U CN201921371103 U CN 201921371103U CN 210806847 U CN210806847 U CN 210806847U
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Abstract
The utility model discloses a distribution network line state information integration collection system, include: the system comprises a power module, a main control module, an NB-IoT communication module and a state sampling module, wherein data collected by the state sampling module is remotely transmitted through the NB-IoT communication module, and the power module comprises a battery, an induction electricity taking unit, a charging energy storage unit and a power supply changeover switch unit; the induction electricity taking unit is connected with the charging energy storage unit and used for taking electricity from a circuit and injecting induction electric energy into the charging energy storage unit; the utility model discloses a line information sampling and remote communication interaction integrated design, avoid the existence of many defects of "acquisition unit + collection unit" terminal equipment separation; the endurance of the terminal is improved through the double power supply and the low power consumption of NB-IoT communication.
Description
Technical Field
The utility model relates to an electric wire netting field especially relates to a distribution network line state information integration collection system.
Background
At present, a distribution network line state information acquisition device (also called a distribution network line fault indicator) is widely adopted in a distribution network line, and information support is provided for improving the fault location, operation and maintenance capabilities of the distribution network by monitoring the state information of the distribution network line.
Referring to fig. 1, although the application range of the acquisition device is wide, the acquisition device is in a form of two-stage terminal equipment of an acquisition unit a + a collection unit B, the acquisition unit a and the collection unit B are respectively and independently powered, and generally powered by batteries. The acquisition unit A is arranged on a line to acquire line current and voltage information, and transmits the acquired information to the collection unit B through a local area network communication technology. The collecting unit B is arranged on a tower or other fixed positions near the collecting unit, the collecting unit B performs information interaction with the collecting unit A through an RF or other local area network communication technology in the downlink, and performs information interaction with the main station service platform through a GPRS, 3G/4G and other wide area network communication technologies in the uplink. The mode of the separated design of the acquisition unit A and the collection unit B increases the network level and the equipment quantity, and does not meet the development requirements of terminal equipment integration and convenience.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a distribution network line state information integration collection system is provided.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a distribution network line state information integration collection system, includes: the device comprises a power supply module, a main control module, an NB-IoT communication module and a state sampling module; the power supply module is respectively connected with the main control module, the remote NB-IoT communication module and the state sampling module and is used for supplying power to the main control module, the NB-IoT communication module and the state sampling module; the main control module is used for sending the data acquired by the state sampling module to a remote master station service platform through the NB-IoT communication module;
the power supply module comprises a battery, an induction electricity taking unit, a charging energy storage unit, a power supply change-over switch unit and a power supply output unit; the induction electricity taking unit is connected with the charging energy storage unit and is used for taking electricity from a circuit in an electromagnetic induction mode and injecting induction electric energy into the charging energy storage unit; the power supply changeover switch unit is respectively connected with the battery, the charging energy storage unit and the power supply output unit and is used for selecting the battery to supply power to the power supply output unit when the electric energy of the charging energy storage unit is exhausted and selecting the charging energy storage unit to supply power to the power supply output unit under other conditions.
Preferably, the charging energy storage unit comprises a super capacitor.
Preferably, the power supply changeover switch unit includes a voltage acquisition circuit, a comparison circuit and a switch, the voltage acquisition circuit is used for acquiring the voltage of the super capacitor, and the comparison circuit is used for comparing the voltage acquired by the voltage acquisition circuit with a preset reference voltage and outputting a comparison result signal as a control signal of the switch.
Preferably, the main control module comprises an MCU, and a clock circuit and a storage circuit connected to the MCU.
Preferably, the state sampling module comprises a current/voltage sampling unit for collecting current/voltage of a line, a temperature sampling unit for collecting ambient temperature, and a battery voltage collecting unit connected with the battery and used for collecting the battery voltage.
The utility model discloses a distribution network line state information integration collection system has following beneficial effect: the utility model integrates the line information sampling and the remote communication interaction, avoids the problem of increasing the equipment quantity and the network level existing in the separation design of the terminal equipment of the acquisition unit and the collection unit, reduces the workload of installation and maintenance, and reduces the complexity of the system; and moreover, the cruising ability of the terminal is improved through the double power supplies and the low power consumption of the NB-IoT communication module.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts:
fig. 1 is a schematic structural diagram of a conventional distribution network line state information acquisition device;
fig. 2 is a schematic structural diagram of the integrated acquisition device for the line state information of the power distribution network of the present invention;
fig. 3 is a schematic structural diagram of the power supply changeover switch unit.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Exemplary embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The utility model discloses the general thinking is, construct a distribution network circuit state information integration collection system, including power module, host system, NB-IoT communication module, state sampling module, collect sampling and the mutual integrated design of remote communication, avoid two terminal equipment separation designs of "acquisition unit + collection unit" to have a great deal of problems; and the power supply module comprises a battery, an induction electricity taking unit, a charging energy storage unit, a power supply change-over switch unit and a power supply output unit, wherein the power supply change-over switch unit selects the battery to supply power to the power supply output unit when the electric energy of the charging energy storage unit is exhausted, and selects the charging energy storage unit to supply power to the power supply output unit under other conditions, so that the cruising ability of the terminal is improved through double power supply and the low power consumption of the NB-IoT communication module.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the specific features in the embodiments and examples of the present invention are detailed descriptions of the technical solutions of the present application, but not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present invention can be combined with each other without conflict.
Referring to fig. 1, the utility model discloses a distribution network line state information integration collection system includes: the device comprises a power module 1, a main control module 2, an NB-IoT communication module 4 and a state sampling module 3.
With the development of communication technology, GPRS gradually quits the network, and the 3G/4G/LTE technology is more suitable for broadband data access. Because the integrated acquisition device belongs to sampling equipment with Low Power consumption, Low cost and small data volume, the integrated acquisition device is more suitable for a communication mode using a Low Power Wide Area Network (LPWAN). Therefore, the NB-IoT communication module 4 is adopted to remotely transmit data in the present invention. By adopting the NB-IoT communication technology, the NB-IoT communication has the characteristics of low power consumption of equipment and wide and deep coverage of signals. The main control module 2 directly carries out information interaction with the main station service platform through the NB-IoT communication network, and reduces terminal equipment and network levels.
The main control module 2 is configured to send the data collected by the state sampling module 3 to a remote master station service platform through the NB-IoT communication module 4. Specifically, the main control module 2 further includes a clock circuit 22 and a storage circuit 23 connected to the MCU 21.
The MCU 21 analyzes the monitored quantity, the management time information and the storage parameters sampled by the state sampling module 3, determines the monitored quantity according to the criterion, determines whether the line state of the distribution network is abnormal, sets a determination threshold according to the specific line, and stores the determination threshold in the storage circuit 23. Under normal state, the functions of periodic reporting of the monitored quantity, time tagging, time synchronization service, response of main station inquiry and execution of main station parameter configuration instructions are realized according to set parameters.
Wherein the criterion conditions include steady state value, peak value, abrupt amplitude and duration of current/voltage, low voltage threshold of the battery 13 voltage, etc. For example, the device may report actively when the following occurs: the distribution network line current voltage condition is abnormal and/or the collection device battery 13 voltage is less than the low voltage threshold. The abnormal information is actively reported to the master station service platform in time, so that information support is provided for line fault positioning and operation and maintenance.
It should be noted that the functions, algorithms, methods, etc. related to this part of the MCU 21 are only conventional adaptive applications of the prior art, and the description of the functions, algorithms, methods is provided herein for better illustration of the present invention so as to better understand the present invention. In fact, the software method based on the utility model can directly move the software module of the existing collecting unit, and the utility model does not relate to the improvement of the algorithm itself.
The state sampling module 3 includes a current/voltage sampling unit 31 for collecting current/voltage of a line, a temperature sampling unit 32 for collecting ambient temperature, and a battery 13 voltage collecting unit 33 connected to the battery 13 and used for collecting voltage of the battery 13. The part of the acquisition units can refer to the acquisition units in the existing distribution network line state information acquisition device, and the details are not repeated here.
It is visible, the utility model discloses with the mutual integrated design of line information sampling and remote communication, avoided the problem of "acquisition unit + collect the increase equipment quantity and the network level that unit" terminal equipment separation design exists, reduced the work load of installation maintenance, reduced the system complexity.
The power module 1 is respectively connected to the main control module 2, the remote NB-IoT communication module 4, and the state sampling module 3, and is configured to supply power to the main control module 2, the NB-IoT communication module 4, and the state sampling module 3. Specifically, the power module 1 includes a battery 13, an induction power-taking unit 11, a charging energy storage unit 12, a power supply changeover switch unit 14, and a power supply output unit 15.
Preferably, the charging energy storage unit 12 comprises a super capacitor.
The induction electricity taking unit 11 is connected with the charging energy storage unit 12, and is used for taking electricity from a circuit in an electromagnetic induction mode based on an induction coil and injecting induction electric energy into the charging energy storage unit 12. The power supply changeover switch unit 14 is respectively connected with the battery 13, the charging energy storage unit 12 and the power supply output unit 15, and is used for selecting the battery 13 to supply power to the power supply output unit 15 when the electric energy of the charging energy storage unit 12 is exhausted, and selecting the charging energy storage unit 12 to supply power to the power supply output unit 15 under other conditions.
Specifically, when the load current of the distribution network line is large, the induction coil gets power from the line, and the induction electric energy is injected into the super capacitor and is supplied with power by the super capacitor. Due to the energy stored by the super capacitor, the super capacitor can still continue its journey when the line current is reduced, but if the super capacitor energy storage is exhausted, the battery 13 is switched to supply power.
Referring to fig. 3, in a possible embodiment, the power supply changeover switch unit 14 includes a voltage acquisition circuit 141, a comparison circuit 142 and a switch 143, the voltage acquisition circuit 141 may employ, but is not limited to, a voltage division sampling circuit for acquiring the voltage of the super capacitor, and the comparison circuit 142 may employ, but is not limited to, a comparator, compares the voltage acquired by the voltage acquisition circuit 141 by setting a reference voltage, and outputs a comparison result signal as a control signal of the switch 143. The switch 143 has two input terminals, one is connected to the battery 13, the other is connected to the super capacitor, when the voltage of the super capacitor is greater than the reference voltage (when the current in the line is greater, it can be ensured that the voltage of the super capacitor is greater than the reference voltage), the output terminal of the switch 143 is controlled by the signal output by the comparator to communicate with the output terminal connected to the super capacitor, so that the whole device is powered by the super capacitor, otherwise, when the voltage of the super capacitor is less than the reference voltage (when the current in the line is less, it cannot be ensured that the voltage of the super capacitor is greater than the reference voltage), the output terminal of the switch 143 is controlled by the signal output by the comparator to communicate with the output terminal connected to the battery 13, so that. Therefore, the cruising ability of the terminal is improved through the double power supply and the low power consumption of the NB-IoT communication module 4.
The power output unit 15 is configured to convert the voltage provided by the battery 13 or the super capacitor into three paths of output voltages: the first path of output voltage is supplied to the MCU 21 and used for supplying power to the MCU 21; the second output voltage is sent to the NB-IoT communication module 4; the third output voltage is given to the state sampling module 3. It is understood that the power output unit 15 can use various DCDC modules to output various voltages.
To sum up, the utility model discloses a distribution network line state information integration collection system has following beneficial effect: the utility model integrates the line information sampling and the remote communication interaction, avoids the problem of increasing the equipment quantity and the network level existing in the separation design of the terminal equipment of the acquisition unit and the collection unit, reduces the workload of installation and maintenance, and reduces the complexity of the system; and moreover, the cruising ability of the terminal is improved through the double power supplies and the low power consumption of the NB-IoT communication module.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (5)
1. The utility model provides a distribution network line state information integration collection system which characterized in that includes: the device comprises a power supply module, a main control module, an NB-IoT communication module and a state sampling module; the power supply module is respectively connected with the main control module, the remote NB-IoT communication module and the state sampling module and is used for supplying power to the main control module, the NB-IoT communication module and the state sampling module; the main control module is used for sending the data acquired by the state sampling module to a remote master station service platform through the NB-IoT communication module;
the power supply module comprises a battery, an induction electricity taking unit, a charging energy storage unit, a power supply change-over switch unit and a power supply output unit; the induction electricity taking unit is connected with the charging energy storage unit and is used for taking electricity from a circuit in an electromagnetic induction mode and injecting induction electric energy into the charging energy storage unit; the power supply changeover switch unit is respectively connected with the battery, the charging energy storage unit and the power supply output unit and used for selecting the charging energy storage unit to supply power to the power supply output unit and selecting the battery to replace the charging energy storage unit to supply power to the power supply output unit when the electric energy of the charging energy storage unit is exhausted.
2. The apparatus of claim 1, wherein the charged energy storage unit comprises a supercapacitor.
3. The device according to claim 2, wherein the power supply changeover switch unit comprises a voltage acquisition circuit, a comparison circuit and a switch, the voltage acquisition circuit is used for acquiring the voltage of the super capacitor, and the comparison circuit is used for comparing the voltage acquired by the voltage acquisition circuit with a preset reference voltage and outputting a comparison result signal as a control signal of the switch.
4. The device of claim 1, wherein the main control module comprises an MCU, and a clock circuit and a storage circuit connected to the MCU.
5. The device of claim 1, wherein the state sampling module comprises a current/voltage sampling unit for collecting current/voltage of a line, a temperature sampling unit for collecting ambient temperature, and a battery voltage collecting unit connected to the battery and for collecting the battery voltage.
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| CN201921371103.3U CN210806847U (en) | 2019-08-22 | 2019-08-22 | Integrated acquisition device for power distribution network line state information |
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| CN201921371103.3U CN210806847U (en) | 2019-08-22 | 2019-08-22 | Integrated acquisition device for power distribution network line state information |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332549A (en) * | 2020-09-29 | 2021-02-05 | 许继集团有限公司 | Single-coil sampling and induction power taking multiplexing device and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332549A (en) * | 2020-09-29 | 2021-02-05 | 许继集团有限公司 | Single-coil sampling and induction power taking multiplexing device and control method thereof |
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