CN115065161A - Transformer substation inspection device - Google Patents

Abstract

The invention discloses a substation patrol device which comprises a shell, a temperature detection module, a partial discharge detection module and a central controller, wherein the central controller receives data transmitted by the temperature detection module and the partial discharge detection module to judge foreign matters and partial discharge conditions. And (3) finding out equipment fault points and hidden danger points in time through fault detection, and determining fault types so as to eliminate faults. The device is small in size and convenient to carry, provides convenience for workers, and improves the efficiency of transformer substation inspection work.

Description

A substation patrol device

technical field

The invention relates to the technical field of electric power inspection, in particular to a substation inspection device.

Background technique

With the development and innovation of the infrared detection industry, infrared detection technology has been developed for many years in the measurement field as a non-contact detection technology. At the same time, the power system is developing rapidly, the precision of the equipment is getting higher and higher, and the types of protection and measurement equipment are also increasing. A little challenge came.

In the daily inspection of the substation, due to the hidden safety hazards of old and damp equipment, the use of traditional temperature measurement devices has many shortcomings in actual work, such as the protection malfunction caused by the hidden dangers of the measurement and control cabinets and protection cabinets in the main control room; 10kV And 35kV high-voltage room switch cabinet with foreign objects, small animal short circuit; internal equipment failure; secondary power loss of the whole station caused by the failure of the station transformer, monitoring lighting can not be used, etc., traditional temperature measurement devices can not be effectively detected. Troubleshoot and eliminate it in time. Therefore, there is an urgent need for a substation inspection device suitable for small spaces such as measurement and control cabinets and protection cabinets.

SUMMARY OF THE INVENTION

Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a substation inspection device, which can timely find equipment fault points and hidden danger points through fault detection, determine the fault type, and eliminate the fault. The device is small in size and convenient to carry, which provides convenience for staff and improves the efficiency of substation inspection work.

In order to achieve the above object, the present invention is realized by the following technical solutions:

A first aspect of the present disclosure provides a substation inspection device, including: a casing, a temperature detection module, a partial discharge detection module, and a central controller;

The temperature detection module includes an infrared thermal imager, and the image data and temperature data collected by the infrared thermal imager are uploaded to the central controller for foreign object judgment;

The partial discharge detection module includes a signal acquisition unit, a noise evaluation unit and a signal analysis unit. The signal acquisition unit acquires the partial discharge signal, performs noise filtering processing through the noise evaluation unit, and analyzes the processed signal through the signal analysis unit to obtain a partial discharge signal. Discharge situation, upload the results to the central controller to judge the partial discharge situation;

The central controller receives signals from the temperature detection module and the partial discharge detection module, and performs foreign object judgment and partial discharge judgment;

Further, it also includes a sensor positioning module and a wireless communication module, the sensor positioning module includes a sensor unit, a positioning unit and a main controller, the positioning unit is composed of a gyroscope, an accelerometer, a magnetometer and an altimeter, the sensor unit It consists of several sensors, the sensor unit is connected with the positioning unit, the positioning unit is connected with the main controller, and the main controller is connected with the central controller.

Further, the specific process of the foreign object judgment by the central controller is that the central controller receives image data and temperature data for comprehensive judgment, and if foreign matter is found, it sends a foreign object instruction to the sensor positioning module through the wireless communication module, and the sensor positioning module. The collected foreign body position information is fed back to the central controller, and the central controller outputs the foreign body judgment result and the foreign body position information.

Furthermore, the sensor positioning module calculates and processes the foreign object state information collected by each sensor to obtain the real-time three-dimensional space position information of the foreign object; the three-dimensional space position information is forwarded to the wireless communication module through the main controller; the wireless communication module sends the three-dimensional space position information to the wireless communication module. Sent to the central controller by the mobile communication network.

Further, the noise evaluation unit includes a capacitive coupler, a microprocessor, a processor and a filter; the noise evaluation unit is used for filtering out the spectral information of the environmental noise when detecting the partial discharge condition, and only for the discharge pulse signal. Perform spectral analysis.

Further, the capacitive coupler is used to obtain the discharge pulse signal, and after analog-to-digital conversion, the digital signal is transmitted to the microprocessor; the microprocessor is used to analyze and process the digital signal to generate a preset measurement spectrum range and a preset measurement spectrum range. Set the measurement threshold, after amplification, it is transmitted to the processor, the processor receives the preset measurement spectrum range and the preset measurement threshold, and generates the preset voltage information according to the analysis result, and then after digital-to-analog conversion The partial discharge signal is obtained by filtering through the filter.

Furthermore, the signal analysis unit receives the filtered partial discharge signal, and generates a partial discharge condition according to the filtered partial discharge signal and uploads it to the central control controller.

Further, an alarm device is also included. If the foreign body determines that there is a foreign body or the partial discharge situation determines that the partial discharge condition is abnormal, the central controller sends an alarm command to the alarm device, and the alarm device sends an alarm to remind.

Further, it also includes a display screen and buttons for displaying the judgment result of the central controller.

Further, it also includes lighting equipment, the lighting equipment is installed at the front end of the casing, and is used to realize lighting when a fault is found.

The beneficial effects of the above embodiments of the present invention are as follows:

In the patrol work of the substation, the present invention can effectively inspect and inspect the operating conditions of the substation equipment through the equipment state detection and fault diagnosis technology including temperature, noise and partial discharge, etc., and can timely discover the abnormal operating conditions of the equipment and improve the work efficiency.

The device of the invention is small in size, convenient for staff to carry, and provides convenience for inspection work.

The device of the present invention can judge foreign objects, determine whether the foreign objects are living objects, and can locate and determine the position of the foreign objects, which is convenient for finding fault points.

The present invention can detect the partial discharge condition, find the abnormal discharge in time, and remind the staff to remove the fault.

Description of drawings

The accompanying drawings forming a part of the present invention are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation of the present invention.

Fig. 1 is the overall structure diagram of the substation inspection device in the present invention;

Fig. 2 is the working flow chart of foreign matter judgment in the substation inspection device of the present invention;

3 is a schematic diagram of the signal transmission principle of partial discharge in the substation inspection device of the present invention;

Among them, 1. Shell; 2. Display screen; 3. Buttons; 4. Lighting equipment; 5. Infrared thermal imager.

Detailed ways:

It should be noted that the following detailed description is exemplary and intended to provide further explanation of the application. Unless otherwise defined, 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 application belongs.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that the presence of features, steps, operations, devices, components and/or combinations thereof;

Example 1:

Embodiment 1 of the present disclosure provides a substation inspection device, including: a casing, a temperature detection module, a partial discharge detection module, and a central controller; the central controller receives signals from the temperature detection module and the partial discharge detection module, and performs foreign object judgment and detection. Partial discharge judgment.

The temperature detection module includes an infrared thermal imager, image data and temperature data collected by the infrared thermal imager, and uploads the data to the central controller for foreign matter judgment; the infrared thermal imager has a built-in image acquisition module, image processing module and image analysis module;

The image acquisition module uses the camera of the infrared thermal imager to collect image data, and the image processing module encodes the image or video data collected by each camera. At this time, when the hardware is used for data acquisition, the software performs operations to select the common area of infrared and visible images to form an image or Video; temperature identification calculation is performed according to different color blocks after imaging to form temperature test data. The test data and the collected video or image are stored by the image storage module as needed, or forwarded to the central controller for foreign object judgment.

The central controller receives image data and temperature data for comprehensive judgment. If foreign objects are found, keep the position of the substation inspection device unchanged. At this time, the position of the substation inspection device is the foreign object position, and the foreign object command is sent to the sensor positioning module through the wireless communication module. The sensor positioning module feeds back the collected foreign body position information to the central controller, and the central controller outputs the foreign body judgment result and the foreign body position information.

It also includes a sensor positioning module and a wireless communication module. The sensor positioning module includes a sensor unit, a positioning unit and a main controller. The positioning unit is composed of a gyroscope, an accelerometer, a magnetometer and an altimeter. The sensor unit is composed of several sensors. It is connected with the positioning unit, the positioning unit is connected with the main controller, and the main controller is connected with the central controller.

The sensor positioning module calculates and processes the foreign object state information collected by each sensor to obtain the real-time three-dimensional space position information of the foreign object; the three-dimensional space position information is forwarded to the wireless communication module through the main controller; the wireless communication module sends the three-dimensional space position information from the mobile communication network to the wireless communication module. central controller.

The partial discharge detection module includes a signal acquisition unit, a noise evaluation unit and a signal analysis unit. The noise evaluation unit includes a capacitive coupler, a microprocessor, a processor and a filter; The spectral information of the ambient noise is obtained, and only the spectral analysis of the discharge pulse signal is performed.

The capacitive coupler is used to obtain the discharge pulse signal, and after analog-to-digital conversion, the digital signal is transmitted to the microprocessor; the microprocessor is used to analyze and process the digital signal to generate a preset measurement spectrum range and a preset measurement threshold, which are amplified after amplification. and then transmitted to the processor, the processor receives the preset measurement spectrum range and preset measurement threshold, and generates the preset voltage information according to the analysis result, and then performs digital-to-analog conversion through a filter for filtering processing. Get the partial discharge signal.

In this embodiment, the existing analog-to-digital converter and the digital-to-analog converter are used for the analog-to-digital conversion and the digital-to-analog conversion, and the signal amplifier is used for the signal amplification.

The signal acquisition unit acquires the partial discharge signal, performs noise filtering processing through the noise evaluation unit, analyzes the processed signal through the signal analysis unit to obtain the partial discharge condition, and uploads the result to the central controller for partial discharge condition judgment. The signal analysis unit receives the filtered partial discharge signal, and generates partial discharge according to the filtered partial discharge signal and uploads it to the central control controller.

The alarm device, if the foreign body judges that there is a foreign body or the partial discharge condition judges that the partial discharge condition is abnormal, the central controller sends an alarm command to the alarm device, and the alarm device sends out an alarm to remind.

The display screen and keys are used to display the judgment result of the central controller.

The lighting device is an LED lamp, and the lighting device is installed at the front end of the housing to realize lighting when a fault is found.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims (10)

1. The utility model provides a transformer substation tours device which characterized in that includes: the device comprises a shell, a temperature detection module, a partial discharge detection module and a central controller;

the temperature detection module comprises an infrared thermal imager, and image data and temperature data acquired by the infrared thermal imager are uploaded to the central controller for foreign matter judgment;

the partial discharge detection module comprises a signal acquisition unit, a noise evaluation unit and a signal analysis unit, wherein the signal acquisition unit acquires a partial discharge signal, the noise evaluation unit carries out noise filtering processing, the processed signal is analyzed by the signal analysis unit to obtain a partial discharge condition, and the result is uploaded to the central controller for judging the partial discharge condition;

and the central controller receives signals from the temperature detection module and the partial discharge detection module and judges the foreign matter and the partial discharge condition.

2. The substation patrol device according to claim 1, further comprising a sensor positioning module and a wireless communication module, wherein the sensor positioning module comprises a sensor unit, a positioning unit and a master controller, the positioning unit comprises a gyroscope, an accelerometer, a magnetometer and an altimeter, the sensor unit comprises a plurality of sensors, the sensor unit is connected with the positioning unit, the positioning unit is connected with the master controller, and the master controller is connected with the central controller.

3. The substation patrol device according to claim 2, wherein the specific process of the central controller foreign matter determination is that the central controller receives the image data and the temperature data to perform comprehensive determination, if a foreign matter is found, a foreign matter instruction is sent to the sensor positioning module through the wireless communication module, the sensor positioning module feeds back the collected foreign matter position information to the central controller, and the central controller outputs a foreign matter determination result and the foreign matter position information.

4. The substation patrol device according to claim 3, wherein the sensor positioning module calculates and processes foreign matter state information acquired by each sensor to obtain real-time three-dimensional spatial position information of the foreign matter; the three-dimensional space position information is forwarded to the wireless communication module through the master controller; the wireless communication module sends the three-dimensional space position information to the central controller through the mobile communication network.

5. The substation patrol device of claim 1, wherein the noise evaluation unit comprises a capacitive coupler, a microprocessor, a processor and a filter; the noise evaluation unit is used for filtering out frequency spectrum information of environmental noise when the partial discharge condition is detected, and only performing frequency spectrum analysis on the discharge pulse signal.

6. The substation patrol device according to claim 5, wherein the capacitive coupler is configured to obtain a discharge pulse signal, perform analog-to-digital conversion, and transmit a digital signal to the microprocessor; the microprocessor is used for analyzing and processing the digital signal to generate a preset measurement frequency spectrum range and a preset measurement threshold value, amplifying the digital signal and transmitting the amplified digital signal to the processor, and the processor receives the preset measurement frequency spectrum range and the preset measurement threshold value, generates preset voltage information according to the analysis result, and performs filtering processing on the preset voltage information through a filter after digital-to-analog conversion to obtain a partial discharge signal.

7. The substation patrol device according to claim 6, wherein the signal analysis unit receives the filtered partial discharge signal, generates a partial discharge condition according to the filtered partial discharge signal, and uploads the partial discharge condition to the central control controller.

8. The substation patrol device according to claim 1, further comprising an alarm device, wherein if the foreign matter is determined to be present or the partial discharge condition is determined to be abnormal, the central controller sends an alarm instruction to the alarm device, and the alarm device sends an alarm to remind a user.

9. The substation patrol device according to claim 1, further comprising a display screen and a button for displaying the judgment result of the central controller.

10. The substation patrol device according to claim 1, further comprising an illumination device mounted at the front end of the housing for illuminating when a fault is discovered.

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