CN212932772U - Voltage monitoring device - Google Patents
Voltage monitoring device Download PDFInfo
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- CN212932772U CN212932772U CN202021770101.4U CN202021770101U CN212932772U CN 212932772 U CN212932772 U CN 212932772U CN 202021770101 U CN202021770101 U CN 202021770101U CN 212932772 U CN212932772 U CN 212932772U
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Abstract
The utility model discloses a voltage monitoring device, which comprises a power module, a voltage acquisition module, an information processing mainboard and a man-machine interaction module; the information processing mainboard is provided with an RS-485 interface; the output end of the voltage acquisition module is electrically connected with the RS-485 interface of the information processing mainboard through an RS-485 signal line; the input end of the man-machine interaction module is electrically connected with the RS-485 interface of the information processing mainboard through an RS-485 signal line; the output end of the power supply module is electrically connected with the voltage acquisition module, the information processing mainboard and the human-computer interaction module respectively. This voltage monitoring device of voltage monitoring device has better early warning nature, and maintenance personal can know the insulating condition of 10kV circuit through voltage monitoring device, avoids not discovering the emergence that leads to the accident because of the maintenance personal the ground connection condition of 10kV circuit.
Description
Technical Field
The utility model relates to an electric power tech field, particularly, concretely relates to voltage monitoring device.
Background
At present, a single-bus circuit breaker subsection or single-bus wiring mode is adopted for a 10kV bus in a 10kV system of a domestic electric power system transformer substation, and various abnormal operation or faults and other conditions can occur in the operation of a bus voltage transformer, so that the 10kV system loses an insulation monitoring function, field workers are not easy to find the fault problems, and electric shock accidents are easily caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of prior art, the utility model provides a voltage monitoring device, this voltage monitoring device have the function of the insulating situation of monitoring circuit.
In order to solve the technical problem, the utility model provides a voltage monitoring device. The voltage monitoring device comprises a power supply module, a voltage acquisition module, an information processing mainboard and a man-machine interaction module; the information processing main board comprises a first RS-485 interface and a second RS-485 interface; the output end of the voltage acquisition module is electrically connected with the first RS-485 interface of the information processing mainboard through an RS-485 signal line; the input end of the man-machine interaction module is electrically connected with a second RS-485 interface of the information processing mainboard through an RS-485 signal line; the output end of the power supply module is electrically connected with the voltage acquisition module, the information processing mainboard and the human-computer interaction module respectively.
As a preferred technical solution of the present invention, the voltage acquisition module includes a signal conditioning unit and a signal sampling unit;
the output end of the signal sampling unit is electrically connected with the input end of the signal conditioning unit,
the output end of the signal conditioning unit is electrically connected with the input end of the information processing mainboard.
As an optimized technical scheme of the utility model, signal sampling unit includes AD7606 sampling chip.
As an optimal technical scheme of the utility model, the information processing mainboard includes the MAX485 chip.
As a preferred technical scheme of the utility model, the human-computer interaction module includes display device, output device and key equipment, the output of information processing mainboard respectively with display device output device with key equipment electric connection.
As an optimal technical scheme of the utility model, display device is the LCD display screen, output device is the printer.
As a preferred technical solution of the present invention, the power module includes a rechargeable lithium battery.
The embodiment of the utility model provides a voltage monitoring device, this voltage monitoring device set up information sampling unit for the device can gather the voltage of 10kV circuit, set up information conditioning unit, make the device convert the information that information sampling unit gathered into unified signal, set up information processing module, make the device handle unified signal, information processing's result passes through the human-computer interaction module carries out audio-visual display, and the maintainer passes through audio-visual display of human-computer interaction module, can learn the insulating condition of 10kV circuit, therefore this voltage monitoring device has better early warning nature, and the maintainer can know the insulating condition of 10kV circuit through voltage monitoring device, avoids not discovering the emergence that the grounding condition of 10kV circuit leads to the accident because of the maintainer.
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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of the main components of a voltage monitoring device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a specific composition of the voltage monitoring device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
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. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict. Fig. 2 shows a schematic diagram of a specific composition of the voltage monitoring device in an embodiment of the present invention. The embodiment of the utility model provides a voltage monitoring device, the monitoring device includes power module, voltage acquisition module, information processing mainboard and human-computer interaction module;
the information processing mainboard is provided with an RS-485 interface; the output end of the voltage acquisition module is electrically connected with the RS-485 interface of the information processing mainboard through an RS-485 signal line; the input end of the man-machine interaction module is electrically connected with the RS-485 interface of the information processing mainboard through an RS-485 signal line; the output end of the power supply module is electrically connected with the voltage acquisition module, the information processing mainboard and the human-computer interaction module respectively.
The specific working flow is that the voltage acquisition module acquires signals of the 10kV bus voltage transformer, converts various signals into analog signals and then converts the analog signals into digital signals, the voltage acquisition module outputs the digital signals to the information processing mainboard, the information processing mainboard processes the digital signals, and the results are displayed through the human-computer interaction module.
Specifically, the voltage acquisition module comprises a signal conditioning unit and a signal sampling unit; the output end of the signal sampling unit is electrically connected with the signal conditioning unit, and the output end of the signal conditioning unit is electrically connected with the information processing mainboard.
Specifically, the signal sampling unit comprises an AD7606 sampling chip. The AD7606 sampling chip is an integrated 8-channel data acquisition system, and comprises an on-chip integrated input amplifier, an overvoltage protection circuit, a second-order analog anti-aliasing filter, an analog multiplexer, a 16-bit 200kSPS SAR ADC and a digital filter. AD7606 has a wide dynamic range and is an ideal device to capture under-voltage/under-current and over-voltage/over-current conditions. The input end of the AD7606 sampling chip is electrically connected with the 10kV bus voltage transformer, various signals collected by the AD7606 sampling chip are converted into analog signals, and then the analog signals are output.
In particular, the signal conditioning unit comprises an analog-to-digital converter (i.e. an a/D converter). The analog-to-digital converter converts the analog signal detected by the information sampling unit into a digital signal and then transmits the digital signal to the information processing mainboard. The analog-to-digital converter has high stability, reliability and anti-interference capability.
Specifically, the information processing motherboard includes a MAX485 chip. The high-performance CPU is composed of MAX485 chips, is provided with a 16-bit ADC (analog to digital converter), 256M and 16MFLASH, is used for calculating, processing and acquiring converted digital signals and transmitting results to the man-machine interaction module.
Specifically, the human-computer interaction module comprises a display device, an output device and a key device, and the display device, the output device and the key device are respectively connected with the information processing mainboard. The display device includes an LCD display screen, and the output device includes a mini printer. The LCD display screen can express the result of the data collected by the equipment after being processed by the central processing unit. The mini printer is used for printing out a detection result or a generated detection report. The key is used for setting and acquiring the equipment parameters.
Specifically, the power module comprises a rechargeable lithium battery, and can continuously work for more than 8 hours, so that the environmental adaptability of the device is greatly improved.
Voltage monitoring device the embodiment of the utility model provides a voltage monitoring device, this voltage monitoring device set up information sampling unit for the device can gather the voltage of 10kV circuit, set up information conditioning unit, make the device pass through the information conversion that information sampling unit gathered to unify the signal, set up information processing module, make the device handle unified signal, information processing's result passes through the human-computer interaction module carries out audio-visual display, and maintainer passes through audio-visual display of human-computer interaction module, therefore this voltage monitoring device has better early warning nature, and maintainer can know the insulating condition of 10kV circuit through voltage monitoring device, avoids not discovering the emergence that the ground connection condition of 10kV circuit leads to the accident because of maintainer.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic or optical disk, or the like.
In addition, the voltage monitoring device provided by the embodiment of the present invention is described in detail above, and a specific example should be adopted herein to explain the principle and the implementation manner of the present invention, and the description of the above embodiment is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (8)
1. A voltage monitoring device is characterized in that the voltage monitoring device is applied to insulation monitoring under a 10KV system of a transformer substation, and comprises a power supply module, a voltage acquisition module, an information processing mainboard and a man-machine interaction module;
the information processing main board comprises a first RS-485 interface and a second RS-485 interface;
the output end of the voltage acquisition module is electrically connected with the first RS-485 interface of the information processing mainboard through an RS-485 signal line;
the input end of the man-machine interaction module is electrically connected with a second RS-485 interface of the information processing mainboard through an RS-485 signal line;
the output end of the power supply module is electrically connected with the voltage acquisition module, the information processing mainboard and the human-computer interaction module respectively.
2. The voltage monitoring device of claim 1, wherein the voltage acquisition module comprises a signal conditioning unit and a signal sampling unit;
the output end of the signal sampling unit is electrically connected with the input end of the signal conditioning unit,
the output end of the signal conditioning unit is electrically connected with the input end of the information processing mainboard.
3. The voltage monitoring device of claim 2, wherein the signal sampling unit comprises an AD7606 sampling chip.
4. The voltage monitoring device of claim 1, wherein the information processing motherboard comprises a MAX485 chip.
5. The voltage monitoring device according to claim 1, wherein the human-computer interaction module includes a display device, an output device and a key device, and an output end of the information processing motherboard is electrically connected to the display device, the output device and the key device, respectively.
6. The voltage monitoring device of claim 5, wherein the display device is an LCD display screen.
7. The voltage monitoring apparatus of claim 5, wherein the output device is a printer.
8. The voltage monitoring device of claim 1, wherein the power module comprises a rechargeable lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021770101.4U CN212932772U (en) | 2020-08-21 | 2020-08-21 | Voltage monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021770101.4U CN212932772U (en) | 2020-08-21 | 2020-08-21 | Voltage monitoring device |
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| CN212932772U true CN212932772U (en) | 2021-04-09 |
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| CN202021770101.4U Active CN212932772U (en) | 2020-08-21 | 2020-08-21 | Voltage monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856128A (en) * | 2020-08-21 | 2020-10-30 | 广西电网有限责任公司桂林兴安供电局 | Voltage monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856128A (en) * | 2020-08-21 | 2020-10-30 | 广西电网有限责任公司桂林兴安供电局 | Voltage monitoring device |
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