CN212514858U - A GIS partial discharge detection device based on digital oscilloscope - Google Patents
A GIS partial discharge detection device based on digital oscilloscope Download PDFInfo
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- CN212514858U CN212514858U CN202020812253.XU CN202020812253U CN212514858U CN 212514858 U CN212514858 U CN 212514858U CN 202020812253 U CN202020812253 U CN 202020812253U CN 212514858 U CN212514858 U CN 212514858U
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Abstract
本实用新型涉及一种基于数字示波器的GIS局部放电检测装置，包括局部放电传感组件、信号采集器、数字示波器、无线传输器和远程分析诊断平台，局部放电传感组件包括传感器壳体、振动传感器、声发射传感器、高频电流传感器、特高频传感器和四个推动电机，四个推动电机设于传感器壳体内，四个推动电机的输出轴伸出传感器壳体，所述推动电机输出轴的末端与振动传感器、声发射传感器、高频电流传感器、特高频传感器固定连接。与现有技术相比，本实用新型采用四种传感器对GIS检测，有效排除现场干扰，提高检测的稳定性；局部放电传感组件内设推动电机，能调节传感器的位置，使测量数据更准确；传感器支架固定局部放电传感组件，提高检测稳定性。
The utility model relates to a GIS partial discharge detection device based on a digital oscilloscope, comprising a partial discharge sensing component, a signal collector, a digital oscilloscope, a wireless transmitter and a remote analysis and diagnosis platform. The partial discharge sensing component comprises a sensor housing, a vibration sensor, acoustic emission sensor, high-frequency current sensor, UHF sensor and four push motors, the four push motors are arranged in the sensor housing, the output shafts of the four push motors extend out of the sensor housing, and the output shafts of the push motors The end of the sensor is fixedly connected with the vibration sensor, the acoustic emission sensor, the high-frequency current sensor, and the UHF sensor. Compared with the prior art, the utility model adopts four kinds of sensors to detect the GIS, which effectively eliminates on-site interference and improves the stability of detection; the partial discharge sensing component is provided with a push motor, which can adjust the position of the sensor and make the measurement data more accurate. ; The sensor bracket fixes the partial discharge sensing component to improve the detection stability.
Description
Technical Field
The utility model belongs to the technical field of partial discharge detection device and specifically relates to a GIS partial discharge detection device based on digital oscilloscope is related to.
Background
GIS (gas insulated fully enclosed switchgear) is one of the important electrical devices in a substation. When the GIS is put into use, if insulation faults occur, substation equipment is damaged, and power supply and normal life are affected. Since partial discharge is a precursor of insulation fault of the GIS device, it is particularly important to detect the partial discharge of the GIS device.
The behavior of partial discharges is manifold, physical, chemical and electrical. In principle, any of them can be used to detect the presence of a partial discharge. There are many detection methods for partial discharge, which can be classified into electrical measurement method and non-electrical measurement method. The electric measurement method comprises a pulse current method, a high frequency method and an ultrahigh frequency method; the non-electrical measurement method comprises an acoustic emission method and a photoelectric method. Currently, a single measurement method, such as an ultrahigh frequency method, a high frequency method and an ultrasonic method, is mostly applied to field GIS partial discharge detection. Although the research and practice prove that the methods are relatively effective detection methods used on the spot, the methods are also interfered, and detection personnel are difficult to analyze and judge when the field conditions are met, such as discharge interference in air, secondary high-frequency signal interference, ultra-high frequency detection of fully-closed equipment, ultrasonic signals caused by equipment vibration and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a GIS partial discharge detection device based on digital oscilloscope in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
a GIS partial discharge detection device based on a digital oscilloscope comprises a partial discharge sensing assembly, a signal collector, the digital oscilloscope, a wireless transmitter and a remote analysis and diagnosis platform, wherein the partial discharge sensing assembly comprises a sensor shell, a vibration sensor, an acoustic emission sensor, a high-frequency current sensor, an ultrahigh-frequency sensor and four pushing motors, the four pushing motors are arranged in the sensor shell, output shafts of the four pushing motors extend out of the sensor shell, the tail ends of the output shafts of the pushing motors are fixedly connected with the vibration sensor, the acoustic emission sensor, the high-frequency current sensor and the ultrahigh-frequency sensor respectively, motor switches connected with the four pushing motors respectively are arranged on the sensor shell, the vibration sensor, the acoustic emission sensor, the high-frequency current sensor and the ultrahigh-frequency sensor are connected with the signal collector respectively, the signal collector is connected with the digital oscilloscope, and the digital oscilloscope is connected with the remote analysis and diagnosis platform through the wireless transmitter.
Preferably, the GIS partial discharge detection device still include the sensor support, the sensor support include base, fixed column and activity post, the activity post insert locate in the fixed column, the activity post reciprocate along the fixed column is inside, the fixed column on be equipped with a plurality of fixed orificess, the activity post on be equipped with the activity top pearl that corresponds with the fixed orifices, the top and the partial discharge sensing subassembly fixed connection of activity post.
Preferably, the signal collector include collector casing, PCB board and locate signal amplification circuit, microprocessor and the filter circuit on the PCB board, signal amplification circuit be connected with vibration sensor, acoustic emission sensor, high frequency current sensor and superfrequency sensor respectively, microprocessor be connected with signal amplification circuit, the filter circuit be connected with microprocessor.
Preferably, the middle part of the output shaft of the pushing motor is provided with a universal joint for driving the tail end of the output shaft to rotate.
Preferably, the microprocessor is an STM32F103ZET6 chip.
Preferably, the digital oscilloscope is a DPO7254 oscilloscope.
Preferably, the vibration sensor is a piezoelectric vibration sensor.
Preferably, the acoustic emission sensor is a resonant acoustic emission sensor.
Preferably, the high-frequency current sensor is a rogowski coil pulse current sensor.
Preferably, the ultrahigh frequency sensor is a log periodic antenna.
Compared with the prior art, the utility model has the advantages of as follows:
(1) the utility model can detect the partial discharge of the GIS equipment, and detect the GIS equipment by using four sensors, namely a vibration sensor, an acoustic emission sensor, a high-frequency current sensor and an ultrahigh-frequency sensor, thereby effectively eliminating the field interference and improving the detection stability;
(2) the partial discharge sensing assembly of the utility model is internally provided with a pushing motor which drives the vibration sensor, the acoustic emission sensor, the high-frequency current sensor and the ultrahigh-frequency sensor to move, and the positions of the vibration sensor, the acoustic emission sensor, the high-frequency current sensor and the ultrahigh-frequency sensor can be flexibly adjusted, so that the measured data is more accurate;
(3) the utility model fixes the partial discharge sensing assembly through the sensor bracket, reduces the labor cost of the hand-held detecting instrument, and improves the detection stability and the detection efficiency;
(4) the utility model discloses a testing result passes through the on-the-spot digital oscilloscope of equipment and shows to transmit the remote analysis diagnostic platform through wireless transmitter and carry out fault diagnosis, will detect and diagnose the separation, can in time discover equipment trouble, improve the reliability of GIS equipment operation.
Drawings
FIG. 1 is a system configuration diagram of the present invention;
fig. 2 is a partial schematic view of the partial discharge sensing assembly and the signal collector of the present invention;
FIG. 3 is a schematic view of the internal structure of the signal collector of the present invention;
fig. 4 is a schematic structural view of the sensor holder according to the present invention when the movable post is extended;
fig. 5 is a schematic structural view of the sensor holder according to the present invention when the movable post is retracted.
The system comprises a local discharge sensing assembly 1, a signal collector 2, a digital oscilloscope 3, a wireless transmitter 4, a remote analysis and diagnosis platform 5, GIS equipment 6, a vibration sensor 7, a vibration sensor 8, an acoustic emission sensor 9, a high-frequency current sensor 10, an ultrahigh-frequency sensor 11, a pushing motor 12, a universal joint 13, a fixing stud 14, a motor switch 15, a signal amplification circuit 16, a sensor interface 17, a filter circuit 18, a microprocessor 19, a base 20, a fixing column 21, a movable column 22, a fixing hole 23, a movable top bead 24 and a sensor support.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Note that the following description of the embodiments is merely an example of the nature, and the present invention is not intended to limit the application or the use thereof, and the present invention is not limited to the following embodiments.
Examples
A GIS partial discharge detection device based on a digital oscilloscope is shown in figure 1 and comprises a partial discharge sensing assembly 1, a signal collector 2, a digital oscilloscope 3, a wireless transmitter 4 and a remote analysis and diagnosis platform 5, wherein the partial discharge sensing assembly 1 comprises a sensor shell, four partial discharge sensors and four pushing motors 11. The partial discharge sensing assembly is connected with the signal collector 2, the signal collector 2 is connected with the digital oscilloscope 3, and the digital oscilloscope 3 is connected with the remote analysis and diagnosis platform 5 through the wireless transmitter 4.
As shown in fig. 1 to 2, the partial discharge sensors are specifically a vibration sensor 7, an acoustic emission sensor 8, a high-frequency current sensor 9, and an ultrahigh-frequency sensor 10, respectively. Four pushing motors 11 are arranged in the sensor shell, output shafts of the four pushing motors 11 extend out of the sensor shell, the tail ends of the output shafts of the pushing motors 11 are fixedly connected with the vibration sensor 7, the acoustic emission sensor 8, the high-frequency current sensor 9 and the ultrahigh-frequency sensor 10 respectively, and motor switches 14 connected with the four pushing motors 11 respectively are arranged on the sensor shell.
As shown in fig. 3, further, the signal collector 2 in this embodiment includes a collector housing, a PCB, and a signal amplifying circuit 15, a microprocessor 18, and a filter circuit 17 that are disposed on the PCB, where the signal amplifying circuit 15 is connected to the vibration sensor 7, the acoustic emission sensor 8, the high-frequency current sensor 9, and the ultrahigh-frequency sensor 10, respectively, the microprocessor 18 is connected to the signal amplifying circuit 15, and the filter circuit 17 is connected to the microprocessor 18. In this embodiment, the PCB is provided with a sensor interface 16 connected to the signal amplifying circuit 15, and the vibration sensor 7, the acoustic emission sensor 8, the high-frequency current sensor 9, and the ultrahigh-frequency sensor 10 are connected to the sensor interface 16 through a connecting wire and connected to the amplifying circuit 15. When the device is used, signals acquired by the vibration sensor 7, the acoustic emission sensor 8, the high-frequency current sensor 9 and the ultrahigh-frequency sensor 10 are amplified by the signal amplification circuit 15, are filtered by the filter circuit 17, are converted by the microprocessor 18 and are transmitted to the digital oscilloscope 3, and a signal acquisition process is completed.
In this embodiment, the microprocessor 18 is an STM32F103ZET6 chip, the digital oscilloscope 3 is a DPO7254 oscilloscope, the vibration sensor 7 is a piezoelectric vibration sensor, the acoustic emission sensor 8 is a resonant acoustic emission sensor, the high-frequency current sensor 9 is a rogowski coil pulse current sensor, and the ultrahigh-frequency sensor 10 is a log-periodic antenna.
In other optional embodiments, the middle part of the output shaft of the pushing motor 11 is provided with a universal joint 12 for driving the tail end of the output shaft to rotate, and the tail end of the output shaft can drive the vibration sensor 7, the acoustic emission sensor 8, the high-frequency current sensor 9 and the ultrahigh-frequency sensor 10 to rotate, so that the position relationship between the vibration sensor 7, the acoustic emission sensor 8, the high-frequency current sensor 9 and the ultrahigh-frequency sensor 10 and the part to be detected of the GIS device is more appropriate, and the detection accuracy is improved.
When the partial discharge sensing assembly is used, the partial discharge sensing assembly 1 is arranged near the GIS equipment, the output shaft of the motor 11 is adjusted and pushed to move through the motor switch 14, the vibration sensor 7, the acoustic emission sensor 8, the high-frequency current sensor 9 and the ultrahigh-frequency sensor 10 are driven to be at proper sensing positions of the GIS equipment, and the detection accuracy is improved. Partial discharge signals collected by the vibration sensor 7, the acoustic emission sensor 8, the high-frequency current sensor 9 and the ultrahigh-frequency sensor 10 are transmitted to the digital oscilloscope 3 through the signal collector 2, the digital oscilloscope 3 displays and stores signal waveforms and data, and the signal data are transmitted to the remote analysis and diagnosis platform 5 through the wireless transmitter 4 for fault analysis.
As shown in fig. 4 to 5, in other optional embodiments, the GIS partial discharge detection apparatus further includes a sensor support 24, the sensor support 24 includes a base 19, a fixed column 20 and a movable column 21, the movable column 21 is inserted into the fixed column 20, the movable column 21 moves up and down along the inside of the fixed column 20, the fixed column 20 is provided with a plurality of fixed holes 22, the movable column 21 is provided with movable top beads 23 corresponding to the fixed holes 22, and the top of the movable column 21 is fixedly connected to the partial discharge sensing assembly 1. In this embodiment, the bottom and the top of the sensor housing are both provided with the fixing studs 13, the top of the movable column 21 is correspondingly provided with screw holes, and the sensor housing is in threaded connection with the movable column 21 through the fixing studs 13 and the screw holes.
The sensor bracket 24 can be used for fixing the partial discharge sensing assembly 1, so that the labor cost of the handheld detection equipment is reduced, and the detection stability and the detection efficiency are improved.
The above embodiments are merely examples and do not limit the scope of the present invention. These embodiments may be implemented in other various manners, and various omissions, substitutions, and changes may be made without departing from the technical spirit of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020812253.XU CN212514858U (en) | 2020-05-15 | 2020-05-15 | A GIS partial discharge detection device based on digital oscilloscope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020812253.XU CN212514858U (en) | 2020-05-15 | 2020-05-15 | A GIS partial discharge detection device based on digital oscilloscope |
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| CN212514858U true CN212514858U (en) | 2021-02-09 |
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| CN202020812253.XU Active CN212514858U (en) | 2020-05-15 | 2020-05-15 | A GIS partial discharge detection device based on digital oscilloscope |
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