CN110687421A - Hand-held type partial discharge detection device - Google Patents
Hand-held type partial discharge detection device Download PDFInfo
- Publication number
- CN110687421A CN110687421A CN201911124242.0A CN201911124242A CN110687421A CN 110687421 A CN110687421 A CN 110687421A CN 201911124242 A CN201911124242 A CN 201911124242A CN 110687421 A CN110687421 A CN 110687421A
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- China
- Prior art keywords
- partial discharge
- detection device
- shell
- circuit
- mainboard
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- 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
- G01R31/1209—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 using acoustic measurements
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- 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
Abstract
The invention discloses a handheld partial discharge detection device which comprises a shell and a mainboard arranged in the shell, wherein a single chip microcomputer is arranged on the mainboard, a TEV sensor, a display screen, a power supply interface, an ultrasonic sensor interface and an earphone interface which are all connected with the single chip microcomputer are arranged on the shell, the ultrasonic sensor interface is connected with an ultrasonic sensor through a lead, and an indicator light and a power supply button which are connected with the single chip microcomputer are arranged on one side of the display screen; the shell is provided with an induction area, and the TEV sensor is arranged in the induction area; the invention simultaneously uses a transient electric wave detection method and an ultrasonic detection method to detect and position the partial discharge fault point, obtains the signal intensity and the pulse number through analysis and calculation, and simultaneously combines with the ultrasonic amplitude value to analyze and reduce the misjudgment to the maximum extent so as to realize the accurate judgment and positioning of the partial discharge fault, and the use is convenient.
Description
Technical Field
The invention belongs to the technical field of discharge detection, and particularly relates to a handheld partial discharge detection device.
Background
With the continuous construction of the national extra-high voltage alternating current and direct current system, the stability and reliability of the power grid are more and more important. Therefore, the power grid puts more and more strict requirements on the safety and reliability of the power equipment, and the insulation performance of the power equipment is regarded as an important ring of the safety and reliability of the power equipment.
The partial discharge test is one of important means for testing the electrical performance of the power equipment, and the partial discharge is also an important parameter for representing the insulation performance of the power equipment. Carry out the partial discharge detection to electrical equipment through the partial discharge test, can prevent effectively that electrical equipment leads to the electric power accident because of self insulation problem, judge to the type of partial discharge and can provide the maintenance basis for electrical equipment overhauls, when adopting partial detection device to detect electrical apparatus setting at present, use transient state earth electric wave detection device to detect the trouble of discharging earlier, then pinpoint the partial discharge fault point through ultrasonic detection device, detection procedure is loaded down with trivial details, and when changing ultrasonic detection device and fixing a position, cause the erroneous judgement easily, need reuse transient state earth electric wave detection device, it is fairly inconvenient to use.
Disclosure of Invention
In order to solve the problems, the invention provides a handheld partial discharge detection device which well solves the problems of misjudgment of partial discharge fault points and inconvenience in use caused by the fact that a transient ground electric wave detection device and an ultrasonic detection device are used separately.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a hand-held partial discharge detection device comprises a shell and a mainboard arranged in the shell, wherein a single chip microcomputer is arranged on the mainboard, a TEV sensor, a display screen, a power supply interface, an ultrasonic sensor interface and an earphone interface which are all connected with the single chip microcomputer are arranged on the shell, the ultrasonic sensor interface is connected with an ultrasonic sensor through a wire, and an indicator light and a power supply button which are connected with the single chip microcomputer are arranged on one side of the display screen; be provided with the induction zone on the casing, the TEV sensor sets up in the induction zone.
Furthermore, be provided with electric connection's first filter circuit, first amplifier circuit, first detection circuit, first AD converting circuit in proper order on the mainboard, first filter circuit is connected with the TEV sensor, and first AD converting circuit is connected with the singlechip.
Furthermore, still be provided with electric connection second amplifier circuit, second filter circuit, second AD converting circuit in proper order on the mainboard, second amplifier circuit is connected with ultrasonic sensor, and second AD converting circuit is connected with the singlechip.
Further, the display screen is a touch screen.
Further, the casing is the cuboid, and the induction zone sets up in the top of casing.
Furthermore, an energy storage power supply, a storage module and a WIfi or bluetooth communication module which are connected with the mainboard are arranged in the shell.
Compared with the prior art, the invention has the following beneficial effects: when the device is used for detecting the transient earth electric wave amplitude, an external ultrasonic sensor can be used for detecting the gap corresponding to the electric equipment, the display screen of the device can simultaneously display the ultrasonic amplitude, and can also be connected with an earphone through the earphone interface to listen to the discharged ultrasonic audio.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic structural diagram of an ultrasonic sensor;
fig. 4 is a circuit diagram of a display screen.
In the figure: 1. a housing; 2. a TEV sensor; 3. a display screen; 4. a power interface; 5. an ultrasonic sensor interface; 6. an earphone interface; 7. an ultrasonic sensor; 8. an indicator light; 9. a power button; 10. a sensing region; 11. and (4) conducting wires.
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.
As shown in fig. 1-4, the hand-held partial discharge detection device of the present invention comprises a housing 1 and a main board disposed in the housing 1, wherein the main board is provided with a single chip microcomputer, the housing 1 is provided with a TEV sensor 2, a display screen 3, a power interface 4, an ultrasonic sensor interface 5 and an earphone interface 6, which are all connected to the single chip microcomputer, the ultrasonic sensor interface 5 is connected to an ultrasonic sensor 7 through a wire 11, and one side of the display screen 3 is provided with an indicator light 8 and a power button 9, which are connected to the single chip microcomputer; the housing 1 is provided with a sensing area 10, and the TEV sensor 2 is arranged in the sensing area 10.
In this embodiment, the main board is fixed in the housing 1 by screws; the model of the singlechip adopts STM32F429IG 76; the model of the TEV sensor 2 adopts TWTA-01; the power interface 4 adopts a type-c interface; the ultrasonic sensor interface 5 adopts a Lemo interface; the size of the earphone interface 6 is 3.5 mm; the connector of the ultrasonic sensor 7 is a LEMO circular connector.
Further, be provided with electric connection's first filter circuit, first amplifier circuit, first detection circuit, first AD converting circuit in proper order on the mainboard, first filter circuit is connected with TEV sensor 2, and first AD converting circuit is connected with the singlechip, and the signal that TEV sensor 2 detected loops through above-mentioned each circuit and transmits for the singlechip, and the singlechip will detect TEV amplitude and show on display screen 3 through calculation processing.
Further, still be provided with electric connection second amplifier circuit in proper order on the mainboard, second filter circuit, second AD converting circuit, second amplifier circuit is connected with ultrasonic sensor 7, second AD converting circuit is connected with the singlechip, it is same, the signal that ultrasonic sensor 7 detected transmits for the singlechip through foretell each circuit, the singlechip will detect ultrasonic amplitude curve through calculation processing and show on display screen 3, the upper left side of display screen 3 shows for TEV amplitude, the upper left side is TEV pulse count, the below curve is ultrasonic amplitude curve, the operating personnel of being convenient for observes.
The display screen 3 is a touch screen, the specific model is TFT1, the circuit diagram of the display screen 3 is shown in FIG. 4, and the touch screen is more convenient to use.
The power supply comprises a shell 1 and is characterized in that an energy storage power supply, a storage module and a WIfi or Bluetooth communication module are arranged in the shell, the energy storage power supply is connected with a mainboard and adopts a power supply of 3.7V8000mAh, and the storage module adopts a 16GB type-c U disk.
When the device is used, the power button 9 is turned on, the indicator light 8 is turned on, the induction area 10 is tightly attached to the surface of the cabinet body of the electrical equipment, the transient earth electric wave detection and ultrasonic detection functions of the device are simultaneously turned on through the display screen 3, the TEV sensor 2 transmits acquired signals to the single chip microcomputer, the ultrasonic sensor 7 is used for detecting gaps corresponding to the electrical equipment, the ultrasonic sensor 7 transmits acquired information to the single chip microcomputer, and the detected TEV amplitude, TEV pulse count and ultrasonic amplitude curve are simultaneously displayed on the display screen 3 through analysis and calculation of the single chip microcomputer, so that accurate judgment and positioning of partial discharge faults are realized, and the device is convenient to use.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a hand-held type partial discharge detection device, includes casing (1) and sets up the mainboard in casing (1), is provided with singlechip, its characterized in that on the mainboard: the intelligent earphone is characterized in that a TEV sensor (2), a display screen (3), a power interface (4), an ultrasonic sensor interface (5) and an earphone interface (6) which are all connected with the single chip microcomputer are arranged on the shell (1), the ultrasonic sensor interface (5) is connected with an ultrasonic sensor (7) through a wire (11), and an indicator lamp (8) and a power button (9) which are connected with the single chip microcomputer are arranged on one side of the display screen (3); the TEV sensor is characterized in that a sensing area (10) is arranged on the shell, and the TEV sensor (2) is arranged in the sensing area (10).
2. The hand-held partial discharge detection device of claim 1, wherein: be provided with electric connection's first filter circuit, first amplifier circuit, first detection circuit, first AD converting circuit in proper order on the mainboard, first filter circuit is connected with TEV sensor (2), and first AD converting circuit is connected with the singlechip.
3. The hand-held partial discharge detection device of claim 2, wherein: the mainboard is also provided with a second amplifying circuit, a second filter circuit and a second AD conversion circuit which are electrically connected in sequence, the second amplifying circuit is connected with the ultrasonic sensor (7), and the second AD conversion circuit is connected with the single chip microcomputer.
4. The hand-held partial discharge detection device of claim 1, wherein: the display screen (3) adopts a touch screen.
5. The hand-held partial discharge detection device of claim 1, wherein: the shell (1) is a cuboid, and the induction area (10) is arranged at the top end of the shell (1).
6. The hand-held partial discharge detection device of claim 1, wherein: an energy storage power supply, a storage module and a WIfi or Bluetooth communication module which are connected with the mainboard are arranged in the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911124242.0A CN110687421A (en) | 2019-11-15 | 2019-11-15 | Hand-held type partial discharge detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911124242.0A CN110687421A (en) | 2019-11-15 | 2019-11-15 | Hand-held type partial discharge detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110687421A true CN110687421A (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911124242.0A Pending CN110687421A (en) | 2019-11-15 | 2019-11-15 | Hand-held type partial discharge detection device |
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| CN (1) | CN110687421A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114255522A (en) * | 2021-12-23 | 2022-03-29 | 河南宏博测控技术有限公司 | Multi-functional inspection device convenient to use |
-
2019
- 2019-11-15 CN CN201911124242.0A patent/CN110687421A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114255522A (en) * | 2021-12-23 | 2022-03-29 | 河南宏博测控技术有限公司 | Multi-functional inspection device convenient to use |
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Address after: Floor 23, block B, national intellectual property creative industry pilot park, 60 Guoji Road, Jinshui District, Zhengzhou City, Henan Province, 450000 Applicant after: HENAN HONGBO MEASUREMENT & CONTROL Co.,Ltd. Address before: 450000 No.7, 8th floor, building 1, yard 21, Fengchan Road, Jinshui District, Zhengzhou City, Henan Province Applicant before: HENAN HONGBO MEASUREMENT & CONTROL Co.,Ltd. |
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