CN213122106U - Data acquisition device and system for monitoring leakage current of insulator - Google Patents
Data acquisition device and system for monitoring leakage current of insulator Download PDFInfo
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- CN213122106U CN213122106U CN202020943640.7U CN202020943640U CN213122106U CN 213122106 U CN213122106 U CN 213122106U CN 202020943640 U CN202020943640 U CN 202020943640U CN 213122106 U CN213122106 U CN 213122106U
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- 239000012212 insulator Substances 0.000 title claims abstract description 98
- 238000012544 monitoring process Methods 0.000 title claims abstract description 63
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 claims 1
- 230000032683 aging Effects 0.000 description 13
- 238000004891 communication Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model discloses a data acquisition device for monitoring leakage current of an insulator, which comprises an MCU controller, a DC power supply module, a voltage stabilizing circuit, an RS485 chip and an RS485 chip array; the DC power supply module is electrically connected with the MCU controller through a voltage stabilizing circuit and used for supplying power to the MCU controller; the MCU controller is electrically connected with the plurality of current online monitoring terminals through the RS485 chip array, so as to be electrically connected with insulators in the high-voltage transmission line and used for detecting leakage current data of the insulators; meanwhile, the MCU controller uploads the acquired leakage current data of the insulator detected by each current online monitoring terminal to an upper computer for storage. The utility model also provides a data acquisition system for monitoring insulator leakage current.
Description
Technical Field
The utility model relates to a high-voltage insulation detects the field, especially relates to a data acquisition device for monitoring insulator leakage current.
Background
According to statistics of relevant data of power supply companies, the performance of the insulator is an important factor among many factors influencing the safe operation of the power transmission line. When the performance of the insulator is aged, the transmission capacity of the transmission line is weakened, and even a fault occurs. In practical power systems, the working environment of the insulator is very harsh, for example, most insulators generally work under large mechanical load and overvoltage impact for a long time, and are simultaneously subjected to external environments such as heavy fog attack, fragment impact and the like, so that the performance aging of the insulator is increasingly serious. When the aging degree of the insulator is high or the contamination degree of the insulator is high, the insulation grade of the insulator is reduced, so that the leakage current flowing through the insulator is increased, the transmission capacity of the transmission line is weakened, and the risk of electric leakage exists. Therefore, in the prior art, the aging of the insulator is generally determined by detecting the leakage current of the insulator. However, the magnitude of the leakage current to the insulator is related to the pole tower structure to which the insulator is mounted, the shape of the insulator, and weather conditions such as temperature, humidity, and even wind speed, in addition to the aging procedure and the degree of contamination of the insulator. The existing insulator aging monitoring device needs a worker to bring an instrument to a field to respectively detect each insulator in a high-voltage transmission line, and then judges the aging condition of the corresponding insulator according to the current detected data result. However, the leakage current of the insulator is a quantity that changes with time, when the aging condition of the insulator is determined for the collected leakage current of the insulator in a single certain time period, the determination result of the aging condition of the insulator is not accurate, even errors occur, and the like due to changes of other external environments, and meanwhile, the data collection efficiency is low due to the fact that the collection of the leakage current of the insulator can only be performed for a single insulator every time.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a data acquisition device for monitoring insulator leakage current, it can solve the problem that the leakage current of the insulator can not be acquired in real time and the acquisition efficiency is low in the prior art.
A second object of the utility model is to provide a data acquisition system for monitoring insulator leakage current, it can solve and can not carry out real-time collection and collection inefficiency scheduling problem to the leakage current of insulator among the prior art.
The utility model discloses an one of the purpose adopts following technical scheme to realize:
a data acquisition device for monitoring leakage current of an insulator comprises an MCU (microprogrammed control unit) controller, a DC power supply module, a voltage stabilizing circuit, an RS485 chip and an RS485 chip array; the DC power supply module is electrically connected with the MCU through a voltage stabilizing circuit and used for providing power for the MCU; the MCU controller is electrically connected with the RS485 chip array, the RS485 chip array is electrically connected with a plurality of current online monitoring terminals, and each current online monitoring terminal is electrically connected with a corresponding insulator in the high-voltage transmission line and used for detecting the leakage current of the corresponding insulator;
the MCU controller is communicated with the upper computer through an RS485 chip and used for uploading the leakage current of the corresponding insulator, detected by each current online monitoring terminal acquired through the RS485 chip array, to the upper computer through the RS485 chip.
Furthermore, the RS485 chip array is provided with 24 RJ45 interfaces; and the RS485 chip array is electrically connected with the corresponding current online monitoring terminal through each RJ45 interface.
Further, the RS485 chip is provided with the following three wiring ports: an RJ45 interface, a DB9 interface and a plug-in wiring port; and the RS485 chip is communicated with the upper computer through any one of an RJ45 interface, a DB9 interface and a plug-in wiring port.
Further, the DC power supply module is configured to provide a 24V DC voltage; the voltage stabilizing circuit is a DC-DC voltage stabilizing circuit and is used for providing +24V direct current voltage, +5V direct current voltage and +3.3V direct current voltage.
Further, the MCU controller is provided with a USB interface; the MCU controller is connected with external equipment through a USB interface and is used for upgrading and/or maintaining system software.
Further, the data acquisition device includes the pilot lamp module, pilot lamp module and MCU controller electric connection for the operating condition of instruction data acquisition device and the on-line status of every electric current on-line monitoring terminal.
Further, the data acquisition device comprises an alarm execution mechanism, the MCU controller is electrically connected with the alarm execution mechanism and used for controlling the working state of the alarm execution mechanism according to the judgment result when the MCU controller receives the judgment result sent by the upper computer.
Further, the warning executing mechanism comprises a photoelectric isolation interface; an optical coupler is arranged in the photoelectric isolation interface; the MCU controller sends a control signal to the output end of the optocoupler through the transmitting end of the optocoupler so as to drive an external device switch; meanwhile, the transmitting end and the receiving end of the optical coupler are respectively and independently powered and are not electrically connected.
Further, the data acquisition device includes the watchdog, watchdog and MCU controller electric connection for monitor MCU controller's operating condition.
The second purpose of the utility model is realized by adopting the following technical scheme:
a data acquisition system for monitoring leakage current of an insulator comprises an upper computer, a current online monitoring terminal and a data acquisition device for monitoring the leakage current of the insulator, wherein the data acquisition device is adopted as one of the purposes of the invention; the current online detection terminal is electrically connected with the insulator and used for acquiring leakage current of the insulator and sending the leakage current of the insulator to the data acquisition device; and the data acquisition device is communicated with the upper computer and is used for transmitting the acquired leakage current of the insulator to the upper computer.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses a separately set up current on-line monitoring terminal and data acquisition device, install the current on-line monitoring terminal on the insulator in the transmission line through the data acquisition device, realize carrying out real-time on-line monitoring to the leakage current of insulator, solved among the prior art can only detect to the leakage current of insulator in single certain time quantum and lead to the inaccurate problem of insulator ageing condition judgement result; and simultaneously, the utility model discloses a set up RS485 chip array and can be connected with a plurality of electric current on-line monitoring terminal simultaneously, realize detecting the function simultaneously to the leakage current of a plurality of insulators, improved the leakage current's of insulator data acquisition efficiency.
Drawings
Fig. 1 is a block diagram of a data acquisition device for monitoring leakage current of an insulator according to the present invention;
FIG. 2 is a schematic view of the data acquisition device in FIG. 1 connected to an on-line current monitoring terminal;
FIG. 3 is a schematic diagram of the connection between the data acquisition device in FIG. 1 and a PC upper computer;
fig. 4 is a block diagram of a data acquisition system for monitoring leakage current of an insulator according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
Example one
As shown in fig. 1 to 3, this embodiment provides a preferred embodiment, and an insulator leakage current data acquisition apparatus includes a DC power supply module, a voltage stabilizing circuit, an MCU controller, and an RS485 chip array.
The DC power supply module is electrically connected with the voltage stabilizing circuit and used for providing 24V direct current voltage.
The voltage stabilizing circuit is a DC-DC voltage stabilizing circuit, is electrically connected with the MCU controller, and is used for stabilizing the 24V direct current voltage provided by the DC power supply module and supplying power to the MCU controller. Preferably, the DC-DC voltage regulator circuit provides 3 DC voltages, which are +24V DC voltage, +5V DC voltage, +3.3V DC voltage, respectively, and satisfy the operating voltage of the MCU controller.
Further, the MCU controller is electrically connected with the current online monitoring terminal installed on the insulator through the RS485 chip array and is used for acquiring leakage current of the insulator acquired by the current online monitoring terminal.
Preferably, the current online monitoring terminal is installed on an insulator in the high-voltage transmission line, is electrically connected with the insulator, and is used for monitoring the leakage current of the insulator in the high-voltage transmission line in real time and uploading the detected leakage current to the MCU controller in real time. When the aging degree of the insulator is increased, the leakage current of the insulator is increased, and the leakage current of the insulator is detected and collected in real time, so that the accuracy of judging the aging condition of the insulator can be improved.
Preferably, the MCU controller is communicated with an upper computer and used for uploading current data acquired by each current online monitoring terminal acquired through the RS485 chip array to the upper computer. The utility model discloses a leakage current to the insulator among the high tension transmission line gathers and uploads to the host computer and saves, can realize the leakage current's of insulator data continuity, improves data acquisition efficiency simultaneously, has solved among the prior art to the leakage current of insulator can only carry out the restriction problem that detects to the data in the single time quantum. Meanwhile, the utility model has simple structure, convenient installation and convenient operation for the working personnel; because the utility model discloses can realize real-time on-line monitoring to the insulator to improve the follow-up rate of accuracy of judging the ageing degree of insulator.
Preferably, the RS485 chip array is electrically connected to the current online monitoring terminal through an RJ45 interface. Wherein, the utility model provides a RS485 chip array is equipped with 24 way RJ45 interfaces. And the RS485 chip array is electrically connected with the corresponding current online monitoring terminal through each RJ45 interface. The utility model discloses can connect 24 electric current on-line monitoring terminals simultaneously, realize detecting when to a plurality of insulators among the transmission line, solve among the prior art once can only carry out the problem that detects to single insulator, improve the efficiency that detects greatly.
Preferably, the data acquisition device comprises an alert actuator. And the warning executing mechanism is electrically connected with the MCU controller. Wherein, warning actuating mechanism for when data acquisition device appears working unusually, send and correspond the warning, so that relevant staff in time overhauls or maintains data acquisition device etc..
Preferably, the data acquisition device comprises an RS485 chip. Wherein, the MCU controller communicates with the upper computer through an RS485 chip. Wherein, the RS485 chip is equipped with three kinds of connection port, is respectively: DB9 interface, RJ45 interface and plug-in connection port. The host computer accessible above-mentioned connection port arbitrary one with the RS485 chip communicate, can specifically select according to actual in service behavior.
Preferably, an internal serial communication interface is arranged in the MCU controller. The serial communication interface adopts an MODBUS-RTU communication protocol, and conforms to the MODBUS-RTU protocol specification. The MODBUS-RTU is a serial communication protocol, and networking interconnection between the data acquisition device and all current online monitoring terminals is realized through the protocol.
Preferably, a watchdog is arranged in the data acquisition device. The watchdog is electrically connected with the MCU controller and used for monitoring the working state of the MCU controller.
Preferably, the data acquisition device is also provided with an indicator light module. The indicating lamp module is electrically connected with the MCU controller and used for indicating the on-line condition of the current monitoring equipment terminal, the working state of the data acquisition device and the like.
The indicating lamp module is electrically connected with the MCU controller and used for indicating the communication online and offline state, the power supply access on-off state and other states of each current online monitoring terminal.
Preferably, the warning actuator is provided with a photoelectric isolation interface. Wherein, the photoelectric isolation interface is internally provided with an optical coupler. The MCU controller sends an optical signal to the transmitting end of the optocoupler, and then outputs a control signal through the output end of the optocoupler, so as to drive the working state of the external device. The transmitting end and the receiving end of the optical coupler are respectively and independently powered and are not electrically connected. Because the transmitting terminal and the receiving terminal of opto-coupler do not have the electric connection, also make no electric connection between data acquisition device and the warning actuating mechanism promptly, can prevent that outside forceful electric power or high-power equipment from right the utility model provides a data acquisition device causes high pressure or electromagnetic impact, is convenient for strengthen data acquisition device's interference killing feature.
Preferably, the data acquisition device is further provided with a USB interface. And the MCU controller is electrically connected with the USB interface. In the actual application process, the system software can be connected with other equipment through the USB interface, so that the upgrading or maintenance of the system software and the like are realized.
Example two
Based on embodiment one, as shown in fig. 4, the utility model also provides a data acquisition system for monitoring insulator leakage current, be used for monitoring insulator leakage current's data acquisition device and electric current on-line monitoring terminal that the host computer, embodiment one provided. The current online monitoring terminal is electrically connected with an insulator in the high-voltage transmission line and used for detecting leakage current of the insulator.
The data acquisition device for monitoring the leakage current of the insulators is connected with the plurality of current online monitoring terminals and used for acquiring the leakage current of the insulators monitored by the current online monitoring terminals and uploading the leakage current to the upper computer for storage, so that the leakage current of each insulator in the high-voltage transmission line is stored in the upper computer in real time, and the aging condition of the corresponding insulator is judged according to the historical data of the leakage current of each insulator in the following process.
Preferably, the upper computer is a PC upper computer.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. A data acquisition device for monitoring leakage current of an insulator is characterized by comprising an MCU (microprogrammed control unit) controller, a DC power supply module, a voltage stabilizing circuit, an RS485 chip and an RS485 chip array; the DC power supply module is electrically connected with the MCU through a voltage stabilizing circuit and used for providing power for the MCU; the MCU controller is electrically connected with the RS485 chip array, the RS485 chip array is electrically connected with a plurality of current online monitoring terminals, and each current online monitoring terminal is electrically connected with a corresponding insulator in the high-voltage transmission line and used for detecting the leakage current of the corresponding insulator;
the MCU controller is communicated with the upper computer through an RS485 chip and used for uploading the leakage current of the corresponding insulator, detected by each current online monitoring terminal acquired through the RS485 chip array, to the upper computer through the RS485 chip.
2. The data acquisition device for monitoring the leakage current of the insulator according to claim 1, wherein the RS485 chip array is provided with 24 RJ45 interfaces; and the RS485 chip array is electrically connected with the corresponding current online monitoring terminal through each RJ45 interface.
3. The data acquisition device for monitoring the leakage current of the insulator according to claim 1, wherein the RS485 chip is provided with the following three wiring ports: an RJ45 interface, a DB9 interface and a plug-in wiring port; and the RS485 chip is communicated with the upper computer through any one of an RJ45 interface, a DB9 interface and a plug-in wiring port.
4. The data acquisition device for monitoring the leakage current of the insulator according to claim 1, wherein the DC power supply module is used for supplying 24V direct current voltage; the voltage stabilizing circuit is a DC-DC voltage stabilizing circuit and is used for providing +24V direct current voltage, +5V direct current voltage and +3.3V direct current voltage.
5. The data acquisition device for monitoring the leakage current of the insulator according to claim 1, wherein the MCU controller is provided with a USB interface; the MCU controller is connected with external equipment through a USB interface and is used for upgrading and/or maintaining system software.
6. The data acquisition device for monitoring the leakage current of the insulator according to claim 1, wherein the data acquisition device comprises an indicator light module, and the indicator light module is electrically connected with the MCU controller and is used for indicating the working state of the data acquisition device and the online state of each current online monitoring terminal.
7. The data acquisition device for monitoring the leakage current of the insulator according to claim 1, wherein the data acquisition device comprises an alarm execution mechanism, and the MCU controller is electrically connected with the alarm execution mechanism and used for alarming the abnormal condition of the work of the data acquisition device.
8. The data acquisition device for monitoring the leakage current of the insulator according to claim 7, wherein the warning actuator comprises a photoelectric isolation interface; an optical coupler is arranged in the photoelectric isolation interface; the MCU controller sends a control signal to the output end of the optocoupler through the transmitting end of the optocoupler so as to drive an external device switch; meanwhile, the transmitting end and the receiving end of the optical coupler are respectively and independently powered and are not electrically connected.
9. The data acquisition device for monitoring the leakage current of the insulator according to claim 1, wherein the data acquisition device comprises a watchdog, and the watchdog is electrically connected with the MCU controller and used for monitoring the working state of the MCU controller.
10. A data acquisition system for monitoring leakage current of an insulator, which is characterized by comprising an upper computer, an on-line current monitoring terminal and a data acquisition device for monitoring leakage current of an insulator according to any one of claims 1 to 9; the current online detection terminal is electrically connected with the insulator and used for acquiring leakage current of the insulator and sending the leakage current of the insulator to the data acquisition device; and the data acquisition device is communicated with the upper computer and is used for transmitting the acquired leakage current of the insulator to the upper computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020943640.7U CN213122106U (en) | 2020-05-28 | 2020-05-28 | Data acquisition device and system for monitoring leakage current of insulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020943640.7U CN213122106U (en) | 2020-05-28 | 2020-05-28 | Data acquisition device and system for monitoring leakage current of insulator |
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| Publication Number | Publication Date |
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| CN213122106U true CN213122106U (en) | 2021-05-04 |
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| CN202020943640.7U Active CN213122106U (en) | 2020-05-28 | 2020-05-28 | Data acquisition device and system for monitoring leakage current of insulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Data Acquisition Device and System for Monitoring Insulator Leakage Current Effective date of registration: 20221209 Granted publication date: 20210504 Pledgee: Guangdong Development Bank Limited by Share Ltd. Guangzhou branch Pledgor: GUANGZHOU GUANGHUA ZHIDIAN TECHNOLOGY CO.,LTD. Registration number: Y2022980025913 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210504 Pledgee: Guangdong Development Bank Limited by Share Ltd. Guangzhou branch Pledgor: GUANGZHOU GUANGHUA ZHIDIAN TECHNOLOGY CO.,LTD. Registration number: Y2022980025913 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |