CN211086499U - Hand-held type partial discharge detection device - Google Patents

Abstract

The utility model discloses a hand-held type partial discharge detection device, including casing and the mainboard that sets up in the casing, be provided with the singlechip on the mainboard, be provided with TEV sensor, display screen, power source, ultrasonic sensor interface and the earphone interface that all are connected with the singlechip on the casing, the ultrasonic sensor interface is connected with ultrasonic sensor through the wire, one side of display screen is provided with pilot lamp and the power button that are connected with the singlechip; the shell is provided with an induction area, and the TEV sensor is arranged in the induction area; the utility model discloses use electric wave detection method and ultrasonic detection method to detect the location partial discharge fault point simultaneously, calculate through the analysis and obtain signal strength and pulse count, combine analysis maximum with ultrasonic amplitude simultaneously and reduce the erroneous judgement to the realization is to the accurate judgement and the location of partial discharge trouble, convenient to use.

Description

Hand-held type partial discharge detection device

Technical Field

The utility model belongs to the technical field of discharge detection, especially, a hand-held type partial discharge detection device has been related to.

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.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a hand-held type partial discharge detection device, fine solution transient state earth electric wave detection device and ultrasonic detection device separately use, cause partial discharge fault point erroneous judgement and awkward problem.

In order to realize the purpose, the utility model discloses a technical scheme 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 utility model discloses following beneficial effect has: when detecting the partial discharge fault point, hug closely the electrical equipment cabinet body with the induction zone on the surface, opening device's transient state geoelectric wave detects and the ultrasonic detection function simultaneously, is using the utility model discloses when detecting transient state geoelectric wave amplitude, can use external ultrasonic sensor to correspond electrical equipment's gap to detect, the utility model discloses a display screen simultaneous display ultrasonic amplitude to can also listen the ultrasonic audio frequency of discharging through earphone interface connection earphone, the utility model discloses use transient state geoelectric wave detection method and ultrasonic detection method to detect the location partial discharge fault point simultaneously, calculate through the analysis and obtain signal strength and pulse count, reduce erroneous judgement with ultrasonic amplitude combination analysis at utmost simultaneously, with the realization to the accurate judgement and the location of partial discharge fault, convenient to use.

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 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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to 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 the embodiment, the mainboard is fixed in the shell 1 through screws, the single chip microcomputer is STM32F429IG76, the TEV sensor 2 is TWTA-01, the power supply interface 4 is a type-c interface, the ultrasonic sensor interface 5 is a L EMO interface, the earphone interface 6 is 3.5mm, and the joint of the ultrasonic sensor 7 is a L EMO 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.

Be provided with energy storage power, storage module and WIfi or bluetooth communication module with the mainboard connection in the casing 1, energy storage power adopts 3.7V8000 mAh's power, and storage module adopts 16GB type-c U dish, the utility model discloses can use in moving through local wireless network, improve the utility model discloses an applicability.

Use the utility model discloses the time, open through power button 9, pilot lamp 8 lights, hug closely electrical equipment cabinet body with induction zone 10 on the surface, transient state earth electric wave through display screen 3 opening device simultaneously detects and the ultrasonic detection function, TEV sensor 2 gives the singlechip with the signal transmission who gathers, it detects to use ultrasonic sensor 7 to correspond electrical equipment's gap simultaneously, ultrasonic sensor 7 gives the singlechip with the information transmission who gathers, the TEV amplitude that will detect through the official analysis of singlechip and calculation, TEV pulse count, supersound amplitude curve simultaneous display is on display screen 3, realize accurate judgement and the location to the partial discharge trouble, high durability and convenient 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 modifications may be made to the embodiments or portions thereof 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).

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