CN210347749U - Residual current on-line monitoring device - Google Patents
Residual current on-line monitoring device Download PDFInfo
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- CN210347749U CN210347749U CN201920555775.3U CN201920555775U CN210347749U CN 210347749 U CN210347749 U CN 210347749U CN 201920555775 U CN201920555775 U CN 201920555775U CN 210347749 U CN210347749 U CN 210347749U
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Abstract
A residual current on-line monitoring device comprises a detection host, wherein a central processing unit is arranged in the detection host, a power-off detection module and a residual current measurement module are electrically connected to the central processing unit, the power-off detection module is used for detecting whether a user terminal device is powered off or not, the residual current measurement module is used for measuring and storing the residual current, the detection host is connected with a low-voltage incoming line through the power-off detection module, and the detection host is connected with a user outgoing line through the residual current measurement module; the residual current measuring module is used for measuring and storing the residual current, and the outage detection module is used for respectively monitoring the ammeter boxes of each user and judging whether the user is in outage; the GPRS communication module is used for realizing the remote communication between the detection host and the server, so that rush repair personnel can quickly and accurately determine the fault position and maintain the fault position.
Description
The technical field is as follows:
the utility model relates to a residual current on-line monitoring device.
Background art:
in an electric power system, a transformer area refers to the power supply range or area of a transformer, which is a term for power economy operation management.
In the operation process of a transformer area, a trip accident of a secondary leakage protector can occur, but after maintenance personnel arrive at the site, the power utilization state before and during trip is difficult to restore, so that the position of a user with a fault cannot be quickly determined, the fault cannot be thoroughly solved, the maintenance is difficult, and multiple trips of the same fault are caused.
The utility model has the following contents:
the embodiment of the utility model provides a residual current on-line monitoring device, structural design is reasonable, adopts residual current measurement module and outage detection module to monitor the user, can confirm the concrete position that the trouble takes place fast and carry out quick maintenance, has solved the problem that exists among the prior art.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
the utility model provides a residual current on-line monitoring device, is equipped with central processing unit including detecting the host computer in detecting the host computer, the last electric connection of central processing unit has outage detection module and residual current measuring module, outage detection module is used for detecting whether the user cuts off the power supply, residual current measuring module is used for measuring the size and the storage of the residual current of 1 second before the user cuts off the power supply, detect the host computer and connect the low pressure inlet wire through outage detection module, it is qualified for the next round of competitions to detect the host computer and connect the user through residual current measuring module.
The residual current measuring module comprises a first operational amplifier, the negative input end of the first operational amplifier is connected with a fourth resistor, the positive input end of the first operational amplifier is connected with a sixth resistor, the sixth resistor is connected with a mutual inductor interface, and the mutual inductor interface is used for connecting the detection host with the user outgoing line; a fifth resistor and a third capacitor are connected in parallel between the positive input end and the negative input end of the first operational amplifier, a first diode, a second diode and a first resistor are connected in parallel between the negative input end and the output end of the first operational amplifier, the output end of the first operational amplifier is connected with the negative input end of the second operational amplifier through a seventh resistor, the positive input end of the second operational amplifier is connected with the positive input end of the first operational amplifier through a ninth resistor, the negative input end and the output end of the second operational amplifier are connected with the first resistor, the output end of the second operational amplifier is connected with the positive input end of the third operational amplifier through a tenth resistor, the negative input end of the third operational amplifier is connected with an eighth resistor, the eighth resistor is grounded, the negative input end of the third operational amplifier is connected with an eleventh resistor, and the eleventh resistor is connected with 3.3V, the negative input end of the third operational amplifier is connected with the output end of the third operational amplifier through a third resistor, a first capacitor is connected to the third resistor in parallel, the output end of the third operational amplifier is connected with the positive input end of a fourth operational amplifier, the negative input end of the fourth operational amplifier is connected with a twelfth resistor, the twelfth resistor is grounded, the negative input end of the fourth operational amplifier is connected with the output end of the fourth operational amplifier through a thirteenth resistor, the output end of the fourth operational amplifier is connected with an output interface, the output interface is used for transmitting data to the central processing unit, and the output interface is further connected with a fourth capacitor.
The power failure detection module comprises a photoelectric coupler, a pin of the photoelectric coupler is connected with a fifteenth resistor and a third diode, the third diode is connected with a live wire interface, a pin of the photoelectric coupler is connected with a fourteenth resistor, the fourteenth resistor is connected with a zero line interface, a pin of the photoelectric coupler is grounded, a pin of the photoelectric coupler is connected with a state detection interface, and a pin of the photoelectric coupler is connected with a sixteenth resistor, a seventeenth resistor and an LED lamp.
The system comprises a detection host, a GPRS module and a human-computer interaction module, wherein the detection host is connected with a server through the GPRS module, and the human-computer interaction module is used for a user to check real-time detection parameters.
And an equipment cascade module is also arranged in the detection host and used for connecting a plurality of equipment on the GPRS module.
The model of the operational amplifier is LM2902, and the model of the diode is 1N 4148.
The model of the photoelectric coupler is PC 817B.
The central processing unit is of the model STM 32.
The utility model adopts the above structure, be used for measuring the residual current size and save through the residual current measuring module, monitor each user's ammeter case respectively through the outage detection module, judge whether the user cuts off the power supply; the remote communication between the detection host and the server is realized through the GPRS communication module, so that rush repair personnel can quickly and accurately determine the position of the fault and maintain the fault; a plurality of devices are communicated through a GPRS module through the device cascade module, and a plurality of functional modules are coordinated through the central processing unit, so that the device cascade module has the advantages of high practicability, accuracy and high efficiency.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an electrical schematic diagram of the residual current module of the present invention.
Fig. 3 is the electrical schematic diagram of the power failure detection module of the present invention.
The specific implementation mode is as follows:
in order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
As shown in fig. 1-3, an online residual current monitoring device comprises a detection host, a central processing unit is arranged in the detection host, the central processing unit is electrically connected with a power-off detection module and a residual current measurement module, the power-off detection module is used for detecting whether a user terminal is powered off or not, the residual current measurement module is used for measuring the residual current of the user terminal 1 second before the power-off and storing the residual current, the detection host is connected with a low-voltage incoming line through the power-off detection module, and the detection host is connected with a user outgoing line through the residual current measurement module.
The residual current measuring module comprises a first operational amplifier, the negative input end of the first operational amplifier is connected with a fourth resistor, the positive input end of the first operational amplifier is connected with a sixth resistor, the sixth resistor is connected with a mutual inductor interface, and the mutual inductor interface is used for connecting the detection host with the user outgoing line; a fifth resistor and a third capacitor are connected in parallel between the positive input end and the negative input end of the first operational amplifier, a first diode, a second diode and a first resistor are connected in parallel between the negative input end and the output end of the first operational amplifier, the output end of the first operational amplifier is connected with the negative input end of the second operational amplifier through a seventh resistor, the positive input end of the second operational amplifier is connected with the positive input end of the first operational amplifier through a ninth resistor, the negative input end and the output end of the second operational amplifier are connected with the first resistor, the output end of the second operational amplifier is connected with the positive input end of the third operational amplifier through a tenth resistor, the negative input end of the third operational amplifier is connected with an eighth resistor, the eighth resistor is grounded, the negative input end of the third operational amplifier is connected with an eleventh resistor, and the eleventh resistor is connected with 3.3V, the negative input end of the third operational amplifier is connected with the output end of the third operational amplifier through a third resistor, a first capacitor is connected to the third resistor in parallel, the output end of the third operational amplifier is connected with the positive input end of a fourth operational amplifier, the negative input end of the fourth operational amplifier is connected with a twelfth resistor, the twelfth resistor is grounded, the negative input end of the fourth operational amplifier is connected with the output end of the fourth operational amplifier through a thirteenth resistor, the output end of the fourth operational amplifier is connected with an output interface, the output interface is used for transmitting data to the central processing unit, and the output interface is further connected with a fourth capacitor.
The power failure detection module comprises a photoelectric coupler, a pin of the photoelectric coupler is connected with a fifteenth resistor and a third diode, the third diode is connected with a live wire interface, a pin of the photoelectric coupler is connected with a fourteenth resistor, the fourteenth resistor is connected with a zero line interface, a pin of the photoelectric coupler is grounded, a pin of the photoelectric coupler is connected with a state detection interface, and a pin of the photoelectric coupler is connected with a sixteenth resistor, a seventeenth resistor and an LED lamp.
The system comprises a detection host, a GPRS module and a human-computer interaction module, wherein the detection host is connected with a server through the GPRS module, and the human-computer interaction module is used for a user to check real-time detection parameters.
And an equipment cascade module is also arranged in the detection host and used for connecting a plurality of equipment on the GPRS module.
The model of the operational amplifier is LM2902, and the model of the diode is 1N 4148.
The model of the photoelectric coupler is PC 817B.
The central processing unit is of the model STM 32.
When the detection host is used, the detection host starts to work, the central processing unit sends instructions to each functional module in the detection host respectively, and each functional module enters a working state, wherein the residual current measurement module and the power failure detection module are two core functional modules and are used for detecting the residual current and the circuit on-off state of a user side in real time; the detection device can detect residual current data in real time and store the residual current data of the first 1S in real time, realizes communication with a server through the GPRS module, can upload frozen residual current values in fixed time, and can receive instructions of the server; the power failure detection module detects the power failure state of a user, so that maintenance personnel can quickly and accurately determine the specific position of a fault, and the probability of repeated occurrence of the fault is reduced; the device cascade module in the detection host can enable a plurality of devices to share the same GPRS module for communication, so that the server can acquire the use state of each device, and the man-machine interaction module can facilitate maintenance personnel to check parameters and quickly find out the specific position of a fault; the server gathers the residual current data of collecting, and when breaking down, the server can be fast to maintenance personal and electrical power rush-repair system sending information, makes maintenance personal implement to the scene that the trouble takes place fast and salvages, compares with current equipment, after sending the tripping operation trouble, the concrete position of definite trouble that can be fast accurate to realize salvageing, reduce the repetition rate that the trouble takes place, reduce the maintenance degree of difficulty and cost.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (8)
1. The utility model provides a residual current on-line monitoring device which characterized in that: including detecting the host computer, be equipped with central processing unit in detecting the host computer, the last electric connection of central processing unit has outage detection module and residual current measurement module, outage detection module is used for detecting whether the user end cuts off the power supply, residual current measurement module is used for measuring the size and the storage of the residual current of the first 1 second of user end outage, detect the host computer and pass through outage detection module and connect the low pressure inlet wire, it is qualified for the next round of competitions that the user is connected to detect the host computer through residual current measurement module.
2. The apparatus of claim 1, wherein: the residual current measuring module comprises a first operational amplifier, the negative input end of the first operational amplifier is connected with a fourth resistor, the positive input end of the first operational amplifier is connected with a sixth resistor, the sixth resistor is connected with a mutual inductor interface, and the mutual inductor interface is used for connecting the detection host with the user outgoing line; a fifth resistor and a third capacitor are connected in parallel between the positive input end and the negative input end of the first operational amplifier, a first diode, a second diode and a first resistor are connected in parallel between the negative input end and the output end of the first operational amplifier, the output end of the first operational amplifier is connected with the negative input end of the second operational amplifier through a seventh resistor, the positive input end of the second operational amplifier is connected with the positive input end of the first operational amplifier through a ninth resistor, the negative input end and the output end of the second operational amplifier are connected with the first resistor, the output end of the second operational amplifier is connected with the positive input end of the third operational amplifier through a tenth resistor, the negative input end of the third operational amplifier is connected with an eighth resistor, the eighth resistor is grounded, the negative input end of the third operational amplifier is connected with an eleventh resistor, and the eleventh resistor is connected with 3.3V, the negative input end of the third operational amplifier is connected with the output end of the third operational amplifier through a third resistor, a first capacitor is connected to the third resistor in parallel, the output end of the third operational amplifier is connected with the positive input end of a fourth operational amplifier, the negative input end of the fourth operational amplifier is connected with a twelfth resistor, the twelfth resistor is grounded, the negative input end of the fourth operational amplifier is connected with the output end of the fourth operational amplifier through a thirteenth resistor, the output end of the fourth operational amplifier is connected with an output interface, the output interface is used for transmitting data to the central processing unit, and the output interface is further connected with a fourth capacitor.
3. The apparatus of claim 1, wherein: the power failure detection module comprises a photoelectric coupler, a pin of the photoelectric coupler is connected with a fifteenth resistor and a third diode, the third diode is connected with a live wire interface, a pin of the photoelectric coupler is connected with a fourteenth resistor, the fourteenth resistor is connected with a zero line interface, a pin of the photoelectric coupler is grounded, a pin of the photoelectric coupler is connected with a state detection interface, and a pin of the photoelectric coupler is connected with a sixteenth resistor, a seventeenth resistor and an LED lamp.
4. The apparatus of claim 1, wherein: the system comprises a detection host, a GPRS module and a human-computer interaction module, wherein the detection host is connected with a server through the GPRS module, and the human-computer interaction module is used for a user to check real-time detection parameters.
5. The apparatus of claim 4, wherein: and an equipment cascade module is also arranged in the detection host and used for connecting a plurality of equipment on the GPRS module.
6. The apparatus of claim 2, wherein: the model of the operational amplifier is LM2902, and the model of the diode is 1N 4148.
7. The apparatus of claim 3, wherein: the model of the photoelectric coupler is PC 817B.
8. The apparatus of claim 1, wherein: the central processing unit is of the model STM 32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920555775.3U CN210347749U (en) | 2019-04-22 | 2019-04-22 | Residual current on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920555775.3U CN210347749U (en) | 2019-04-22 | 2019-04-22 | Residual current on-line monitoring device |
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| Publication Number | Publication Date |
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| CN210347749U true CN210347749U (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920555775.3U Active CN210347749U (en) | 2019-04-22 | 2019-04-22 | Residual current on-line monitoring device |
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| CN (1) | CN210347749U (en) |
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2019
- 2019-04-22 CN CN201920555775.3U patent/CN210347749U/en active Active
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Address after: 250000 room 310, 9 Xintiandi Plaza, No. 61 Industrial South Road, Ji'nan, Shandong. Patentee after: Shandong hangze Electric Co.,Ltd. Patentee after: Liu Zhiyong Patentee after: Liu Chuncheng Patentee after: Yang Fan Patentee after: Peng Xuliang Patentee after: Song Hui Patentee after: Jia Cunfeng Address before: 250100 room 1-401, No. 2, Hualong Road, science and Technology City, Licheng District, Jinan City, Shandong Province Patentee before: JINAN LONGHANG ELECTRIC POWER EQUIPMENT Co.,Ltd. Patentee before: Liu Zhiyong Patentee before: Liu Chuncheng Patentee before: Yang Fan Patentee before: Peng Xuliang Patentee before: Song Hui Patentee before: Jia Cunfeng |
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