CN214335123U

CN214335123U - Wireless multifunctional partial discharge detector

Info

Publication number: CN214335123U
Application number: CN202023278896.XU
Authority: CN
Inventors: 唐明; 陈皓; 高原; 吕永勃
Original assignee: Zhuhai Huawang Technology Co ltd
Current assignee: Zhuhai Huawang Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-10-01
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a wireless multifunctional partial discharge detector, which comprises a protective shell, a circuit board arranged in the protective shell, a power module, a data acquisition module, a signal processing module, a wireless communication module and an external sensor; the power supply module, the data acquisition module, the signal processing module and the wireless communication module are all positioned on the circuit board; the power supply module is respectively connected with the data acquisition module, the signal processing module and the wireless communication module; the data acquisition module is connected with the signal processing module through a CAN bus; the signal processing module is connected with the wireless communication module through an SPI bus; the sensor is arranged on the power equipment to be detected and is connected with the data acquisition module through a BNC wire. The utility model discloses can realize power equipment's office conveniently high-efficiently and put the detection, have characteristics such as small and exquisite portable, wireless connection, external sensor diversification.

Description

Wireless multifunctional partial discharge detector

Technical Field

The utility model belongs to power equipment partial discharge detection area, concretely relates to detector is put in multi-functional office of wireless version.

Background

The partial discharge is the discharge of the insulation performance of the power equipment in the local range under the action of a strong electric field, and the limitation is that the insulation local short circuit does not form a conductive channel. Slight local discharge has little influence on the insulation of the power equipment, and the reduction of the insulation strength is slow; while a strong partial discharge will cause a rapid decrease in the dielectric strength. Therefore, when designing the insulation of high-voltage power equipment, it is considered that relatively strong partial discharge is not allowed to occur in the insulation structure under the action of the long-term operating voltage. The monitoring of the equipment in operation needs to be strengthened, and when the partial discharge exceeds a certain degree, the equipment is required to be withdrawn from operation for maintenance or replacement.

The field detection generally adopts a signal cable to connect the detector and the sensor, and data checking needs to be carried out on the cable detector, so that the field detection has the advantages of reliability, complex wiring, multiple cable types, difficult maintenance and the like, particularly under the condition of complex environment, very long cables are possibly needed to connect the sensor and the detector, and the cables with different lengths are configured for different environments and are also complex.

SUMMERY OF THE UTILITY MODEL

Not enough that detection method exists is put in power equipment office to among the prior art, the utility model provides a detector is put in multi-functional office of wireless version. The utility model discloses in mainly using wireless communication technique to partial discharge detection device, with separating out in the data show part follow detector, through wireless connection (WIFI or bluetooth) with data transmission to the cell-phone, use APP to look over data, make the field usage simplify to be convenient for maintain.

The utility model can conveniently and efficiently realize the partial discharge detection of the power equipment, and has the characteristics of small size, portability, wireless connection, diversification of external sensors and the like; when using, install the sensor on the power equipment that needs detected earlier, then be connected to this instrument with the sensor, this instrument can go out data transmission through wireless communication module at last, and convenient to use has improved detection efficiency.

The utility model adopts the following technical scheme:

a wireless multifunctional partial discharge detector comprises a protective shell and a circuit board arranged in the protective shell; the system comprises a power supply module, a data acquisition module, a signal processing module, a wireless communication module and an external sensor; the power supply module, the data acquisition module, the signal processing module and the wireless communication module are all positioned on the circuit board; the power supply module is respectively connected with the data acquisition module, the signal processing module and the wireless communication module; the data acquisition module is connected with the signal processing module through a CAN bus; the signal processing module is connected with the wireless communication module through an SPI bus; the sensor is arranged on the power equipment to be detected and is connected with the data acquisition module through a BNC line; the sensor is selected from one or more than two of TEV sensor, UHF sensor, HFCT sensor, AE sensor and AA sensor.

To the further explanation of the utility model, the signal processing module is wirelessly connected with an external display terminal (such as a mobile phone, an iPad, etc.) through a wireless communication module.

To explain the utility model further, the power module adopts the battery of 3.7V. The power module provides electric energy for the whole instrument.

To the further explanation of the utility model, the data acquisition module adopts the FPGA chip. The data acquisition module acquires data transmitted by the sensor, performs analog-to-digital conversion and transmits the data to the signal processing module.

To further explain the present invention, the signal processing module employs an STM32 processor.

Right the utility model discloses a further explain, wireless communication module supports bluetooth and WIFI.

Use the utility model discloses the time, put the multi-functional office of wireless version and detect appearance connection sensor, install the sensor on the power equipment that needs detected, the sensor can last data acquisition to the instrument, and the instrument finishes data analysis, gives the cell-phone with data transmission through WIFI or bluetooth, carries out the show of data and analysis result on the cell-phone. The choice of sensor type is determined by the type of data that needs to be collected. The TEV sensor (transient earth electric wave sensor) is a high-sensitivity sensor designed to measure transient earth electric waves generated by partial discharge in a high-voltage switchgear. The UHF sensor is mainly used for collecting high-frequency signals generated when partial discharge occurs in the GIS. The HFCT sensor (high-frequency pulse current sensor) is a non-invasive sensor for measuring partial discharge signals, has strong instant response capability, good linearity, easy calibration and high precision, can measure irregular conductors, is convenient to install, does not need to damage the conductors, and can be applied to occasions where the traditional current measuring device cannot be used for measuring high-frequency current. The AE sensor (acoustic emission sensor) has the characteristics of wide detection frequency band, high sensitivity, stable and reliable use and the like. The AA sensor (ultrasonic sensor) is used to acquire an ultrasonic signal generated when the partial discharge occurs.

Compared with the prior art, the utility model has the advantages and beneficial effect as follows:

1. multiple sensors may be supported. The utility model discloses an equipment can support the connection of a plurality of sensors to a general interface. The acquisition requirements of different data can be met.

2. And (4) wireless connection. The utility model discloses data acquisition accomplishes the back, and accessible WIFI or bluetooth are with data transmission for the cell-phone, look over data and analysis result on the cell-phone, convenient to use, and the application scene is extensive.

Drawings

Fig. 1 is a schematic view of a structural framework according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a workflow between hardware modules according to an embodiment of the present invention.

Detailed Description

The present invention is described below with reference to examples and drawings, but the description is not intended to limit the claimed invention further.

Example (b):

as shown in fig. 1-2, a wireless multifunctional partial discharge detector comprises a protective casing, a circuit board, a power module, a data acquisition module, a signal processing module, a wireless communication module and an external sensor, wherein the circuit board, the power module, the data acquisition module, the signal processing module, the wireless communication module and the external sensor are arranged in the protective casing; the power supply module, the data acquisition module, the signal processing module and the wireless communication module are all positioned on the circuit board; the power supply module is respectively connected with the data acquisition module, the signal processing module and the wireless communication module; the data acquisition module is connected with the signal processing module through a CAN bus; the signal processing module is connected with the wireless communication module through an SPI bus; the sensor is arranged on the power equipment to be detected and is connected with the data acquisition module through a BNC wire.

The power module adopts a 3.7V storage battery. The data acquisition module adopts an FPGA chip. The signal processing module employs an STM32 processor. The wireless communication module supports Bluetooth and WIFI.

The sensor is selected from one or more than two of TEV sensor, UHF sensor, HFCT sensor, AE sensor and AA sensor. The choice of sensor type is determined by the type of data that needs to be collected.

The application method of the embodiment comprises the following steps: firstly, the sensor is installed on power equipment needing to be detected, then the sensor is connected into the wireless multifunctional partial discharge detector, the sensor can continuously collect data to the instrument, the instrument finishes data analysis, the data are sent to the mobile phone through WIFI or Bluetooth, and data and analysis results are displayed on the mobile phone.

It should be understood that the above-described embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the practice of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description; this is not necessary, nor exhaustive, of all embodiments; and obvious changes and modifications may be made without departing from the scope of the present invention.

Claims

1. A wireless multifunctional partial discharge detector comprises a protective shell and a circuit board arranged in the protective shell; the method is characterized in that: the system also comprises a power supply module, a data acquisition module, a signal processing module, a wireless communication module and an external sensor; the power supply module, the data acquisition module, the signal processing module and the wireless communication module are all positioned on the circuit board; the power supply module is respectively connected with the data acquisition module, the signal processing module and the wireless communication module; the data acquisition module is connected with the signal processing module through a CAN bus; the signal processing module is connected with the wireless communication module through an SPI bus; the sensor is arranged on the power equipment to be detected and is connected with the data acquisition module through a BNC line; the sensor is selected from one or more than two of TEV sensor, UHF sensor, HFCT sensor, AE sensor and AA sensor.

2. The wireless multifunctional partial discharge detector according to claim 1, characterized in that: the power module adopts a 3.7V storage battery.

3. The wireless multifunctional partial discharge detector according to claim 1, characterized in that: the data acquisition module adopts an FPGA chip.

4. The wireless multifunctional partial discharge detector according to claim 1, characterized in that: the signal processing module employs an STM32 processor.

5. The wireless multifunctional partial discharge detector according to claim 1, characterized in that: the wireless communication module supports Bluetooth and WIFI.