CN111856128A - Voltage monitoring device - Google Patents
Voltage monitoring device Download PDFInfo
- Publication number
- CN111856128A CN111856128A CN202010850127.8A CN202010850127A CN111856128A CN 111856128 A CN111856128 A CN 111856128A CN 202010850127 A CN202010850127 A CN 202010850127A CN 111856128 A CN111856128 A CN 111856128A
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- Prior art keywords
- information processing
- monitoring device
- voltage monitoring
- electrically connected
- module
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 30
- 230000010365 information processing Effects 0.000 claims abstract description 36
- 230000003993 interaction Effects 0.000 claims abstract description 21
- 238000005070 sampling Methods 0.000 claims description 20
- 230000003750 conditioning effect Effects 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a voltage monitoring device, which comprises a power supply module, a voltage acquisition module, an information processing mainboard and a human-computer interaction module, wherein the power supply module is connected with the voltage acquisition 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 invention relates to the technical field of electric power, in particular to a 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.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a voltage monitoring device which has a function of monitoring the insulation condition of a line.
In order to solve the above technical problem, the present invention 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 a preferred technical solution of the present invention, the signal sampling unit includes an AD7606 sampling chip.
As a preferred technical solution of the present invention, the information processing motherboard includes a MAX485 chip.
As a preferred technical solution of the present invention, the human-computer interaction module includes a display device, an output device, and a key device, and the output end of the information processing motherboard is electrically connected to the display device, the output device, and the control device, respectively.
As a preferred technical solution of the present invention, the display device is an LCD display screen, and the output device is a printer.
As a preferable technical solution of the present invention, the power module includes a rechargeable lithium battery.
The embodiment of the invention provides a voltage monitoring device which is provided with an information sampling unit, so that the device can collect the voltage of a 10kV line, an information conditioning unit is arranged, the device converts the information collected by the information sampling unit into a unified signal, an information processing module is arranged, the device processes the unified signal, the information processing result is visually displayed through a human-computer interaction module, and a maintenance worker can know the insulation condition of the 10kV line through the visual display of the human-computer interaction module, so that the voltage monitoring device has good early warning performance, the maintenance worker can know the insulation condition of the 10kV line through the voltage monitoring device, and accidents caused by the fact that the maintenance worker does not find the grounding condition of the 10kV line are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 configuration of a 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 clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 specific composition diagram of the voltage monitoring device in the embodiment of the present invention. The embodiment of the invention provides a voltage monitoring device, which comprises a power supply module, a voltage acquisition module, an information processing mainboard and a man-machine interaction module, wherein the power supply module is used for supplying power to the monitoring device;
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 control 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.
The embodiment of the invention provides a voltage monitoring device, which is provided with an information sampling unit, so that the device can collect the voltage of a 10kV line, an information conditioning unit is arranged, the device converts the information collected by the information sampling unit into a unified signal, an information processing module is arranged, the device processes the unified signal, the information processing result is visually displayed through a man-machine interaction module, and a maintenance worker visually displays the information through the man-machine interaction module, so that the voltage monitoring device has better early warning performance, the maintenance worker can know the insulation condition of the 10kV line through the voltage monitoring device, and accidents caused by the fact that the maintenance worker does not find the grounding condition of the 10kV line are avoided.
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 the principle and the implementation manner of the present invention should be explained by using a specific example herein, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to 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 control 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 |
|---|---|---|---|
| CN202010850127.8A CN111856128A (en) | 2020-08-21 | 2020-08-21 | Voltage monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010850127.8A CN111856128A (en) | 2020-08-21 | 2020-08-21 | Voltage monitoring device |
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| Publication Number | Publication Date |
|---|---|
| CN111856128A true CN111856128A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010850127.8A Pending CN111856128A (en) | 2020-08-21 | 2020-08-21 | Voltage monitoring device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205353281U (en) * | 2015-12-28 | 2016-06-29 | 华北电力大学 | Modified direct current system insulation monitoring and warning device |
| CN106249039A (en) * | 2016-07-22 | 2016-12-21 | 安徽亚辉电气自动化有限公司 | A kind of on-line overvoltage monitor for power distribution network |
| WO2017016431A1 (en) * | 2015-07-24 | 2017-02-02 | 国网江苏省电力公司常州供电公司 | Relative dielectric loss and capacitance tester |
| CN110470963A (en) * | 2019-09-24 | 2019-11-19 | 云南电网有限责任公司红河供电局 | A kind of high voltage capacitive apparatus insulated performance on-line monitoring device based on DSP |
| CN212932772U (en) * | 2020-08-21 | 2021-04-09 | 广西电网有限责任公司桂林兴安供电局 | Voltage monitoring device |
-
2020
- 2020-08-21 CN CN202010850127.8A patent/CN111856128A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017016431A1 (en) * | 2015-07-24 | 2017-02-02 | 国网江苏省电力公司常州供电公司 | Relative dielectric loss and capacitance tester |
| CN205353281U (en) * | 2015-12-28 | 2016-06-29 | 华北电力大学 | Modified direct current system insulation monitoring and warning device |
| CN106249039A (en) * | 2016-07-22 | 2016-12-21 | 安徽亚辉电气自动化有限公司 | A kind of on-line overvoltage monitor for power distribution network |
| CN110470963A (en) * | 2019-09-24 | 2019-11-19 | 云南电网有限责任公司红河供电局 | A kind of high voltage capacitive apparatus insulated performance on-line monitoring device based on DSP |
| CN212932772U (en) * | 2020-08-21 | 2021-04-09 | 广西电网有限责任公司桂林兴安供电局 | Voltage monitoring device |
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