CN207908621U - A kind of partial discharge of switchgear ultrasonic alarm - Google Patents
A kind of partial discharge of switchgear ultrasonic alarm Download PDFInfo
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- CN207908621U CN207908621U CN201820275136.7U CN201820275136U CN207908621U CN 207908621 U CN207908621 U CN 207908621U CN 201820275136 U CN201820275136 U CN 201820275136U CN 207908621 U CN207908621 U CN 207908621U
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- switchgear
- ultrasonic
- partial discharge
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Abstract
The utility model is related to a kind of partial discharge of switchgear ultrasonic alarms, including SF6 switchgears and supersonic reflectoscope, supersonic reflectoscope includes ultrasonic sensor, uhf sensor, ultrasound examination host, ultrasonic sensor, the uhf sensor back side are equipped with adsorbable in the metal magnetic sheet on SF6 switchgear outer walls, metallic magnetic on piece is additionally provided with the wireless transmission unit being connected with ultrasonic sensor, uhf sensor output end signal, and wireless transmission unit output end is connected with oscillograph, ultrasound examination host signal respectively.The utility model can detect whether SF6 switchgears can occur partial discharge phenomenon in real time by ultrasonic sensor and uhf sensor, and quickly the position of shelf depreciation occurs for positioning SF6 switchgears.
Description
Technical field
The utility model is related to electrical equipment monitoring fields more particularly to a kind of partial discharge of switchgear ultrasonic alarm to fill
It sets.
Background technology
Power switch cabinet is the hub device in electric system, is in extremely important status, denier hair in the power system
Raw failure, it is possible to lead to large area blackout, loss difficult to the appraisal be brought to electric system and national economy, with electricity
The main reason for development of Force system and raising of voltage class, shelf depreciation has become power switch cabinet insulation degradation, office
The long-term existence if portion discharges, meeting acceleration equipment aging, even can cause insulation breakdown under certain condition, seriously affect equipment
Normal operation.Therefore, it is of great significance for the safe and stable operation of power equipment to effective detection of shelf depreciation.
Common power switch cabinet detection method for local discharge includes electric pulse detection method, gas chromatography, ultrasound
A variety of detection methods such as wave detection method, Electromagnetic Wave Detection method and light detection method, and ultrasound examination by electrical Interference it is small, it can be achieved that
Remote-wireless measures, and relative to detection methods such as traditional electric pulses, there is clear advantage.
Utility model content
The purpose of this utility model is to provide a kind of partial discharge of switchgear ultrasonic alarms, to solve the above-mentioned back of the body
The problem of being proposed in scape technology.
The utility model is achieved through the following technical solutions：
A kind of partial discharge of switchgear ultrasonic alarm, including SF6 switchgears and supersonic reflectoscope are described super
Sonic wave detector includes ultrasonic sensor, uhf sensor, ultrasound examination host, the ultrasonic sensor, superelevation
The video sensor back side is equipped with adsorbable in the metal magnetic sheet on SF6 switchgear outer walls, and the metallic magnetic on piece is additionally provided with and surpasses
The connected wireless transmission unit of sonic sensor, uhf sensor output end signal, the wireless transmission unit output end point
It is not connected with oscillograph, ultrasound examination host signal.
Preferably, the ultrasound examination host includes signal processing circuit, main controller, gsm communication unit and alarm
Unit, the wireless transmission unit are connected with signal processing circuit, main controller successively signal.
Preferably, the signal processing circuit includes charge translation circuit, pre-amplification circuit, filter circuit, postposition amplification
Circuit and RMS-DC converter circuit.
Preferably, the ultrasonic sensor uses PVDF piezoelectric film sensors, size 3cm*1cm.
Preferably, the wireless transport module is zigbee communication modules.
Preferably, the ultrasonic sensor, uhf sensor quantity are multiple, symmetrically stick in SF6 switchgears
Outer wall.
Compared with prior art, what the utility model reached has the beneficial effect that：
A kind of partial discharge of switchgear ultrasonic alarm provided by the utility model using ultrasonic sensor and surpasses
High frequency sensors can effectively detect SF6 partial discharge of switchgear situations, can quickly confirm that shelf depreciation occurs for SF6 switchgears
The shortcomings of position avoids traditional detection heavy workload, inconvenient, and fault detect is not comprehensive, while sensor uses metal
Magnetic sheet sticks in the mode of switchgear outer wall, substantially increases the placement efficiency of device.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only the preferred reality of the utility model
Example is applied, it for those of ordinary skill in the art, without having to pay creative labor, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the complete schematic that a kind of transmission tower dynamic load provided by the utility model monitors protective device in real time.
Fig. 2 is ultrasonic sensor structure chart provided by the utility model.
In figure, 1 is metal magnetic sheet, and 2 be ultrasonic sensor, and 3 be wireless transmission unit
Specific implementation mode
In order to be best understood from the utility model technology contents, specific embodiment is provided below, and in conjunction with attached drawing to this practicality
It is novel to be described further.
Referring to Fig. 1 and Fig. 2, a kind of partial discharge of switchgear ultrasonic alarm, including SF6 switchgears and ultrasonic wave
Detector, the supersonic reflectoscope include ultrasonic sensor 2, uhf sensor, ultrasound examination host, the ultrasound
Wave sensor 2, the uhf sensor back side are equipped with adsorbable in the metal magnetic sheet 1 on SF6 switchgear outer walls, the metallic magnetic
Piece 1 can be such that ultrasonic sensor 2, uhf sensor securely sticks on SF6 switchgear magnetism outer walls, and easy to disassemble,
Without using when, easily ultrasonic sensor 2, uhf sensor can be unloaded, repeat to make on another SF6 switchgears
With the ultrasonic sensor 2, uhf sensor quantity are 4, with 2 for one group, are divided into two groups and stick in SF6 switches
Cabinet outer wall both sides can greatly improve the judgement precision to SF6 partial discharge of switchgear position, institute by symmetrically arranged mode
It states and is also integrated with wireless transmission unit 3 on metal magnetic sheet 1,3 signal input part of the wireless transmission unit and ultrasonic sensor
2, uhf sensor data are connected, and signal output end is connected with ultrasound examination host signal, and ultrasonic sensor 2 surpasses
The data of high frequency sensors detection can be transmitted to ultrasound examination host by wireless transmission unit 3 and be further processed, described
Ultrasound examination host judges whether SF6 switchgears are sent out by the data that ultrasonic sensor 2, uhf sensor monitor jointly
Raw shelf depreciation, then the position that shelf depreciation occurs in SF6 switchgears is determined by two ultrasonic sensors 2 of setting
Position, and alarm signal is sent out to backstage patrol officer, at the same ultrasound examination host can will treated ultrasonic sensor 2,
Uhf sensor monitoring signals waveform is shown on oscillograph, and backstage patrol officer is facilitated further to check.Preferably, described
Wireless transmission unit 3 uses zigbee communication modules.
Specifically, in one embodiment of the utility model, the ultrasonic sensor 2 is passed using PVDF piezoelectric membranes
Sensor has accuracy of detection height, small, light-weight, the wider outstanding advantages of frequency response range.
Specifically, in another embodiment of the utility model, the ultrasonic sensor 2 can be cut to size and be
The pattern of 3cm*1cm.
Specifically, the ultrasound examination host includes signal processing circuit, main controller, gsm communication unit and alarm
Unit, the signal processing circuit is by charge translation circuit, pre-amplification circuit, filter circuit, postposition amplifying circuit and virtual value
Conversion circuit is constituted, and the input terminal of the charge translation circuit is connected with the output end remote signal of wireless signal unit, described
Charge translation circuit can convert the charge signal of PVDF piezoelectric film sensors and uhf sensor to corresponding voltage,
Transformed voltage signal can be amplified with filter circuit, filtered by pre-amplification circuit, can effectively remove the low-frequency disturbance at scene.Institute
Postposition amplifying circuit is stated with filter amplification circuit to be connected, will be filtered after signal be further amplified, the postposition amplifying circuit
Output end one terminate oscillograph, convenient for backstage, patrol officer checks signal waveform, is further analyzed, and the other end is by having
Valid value conversion circuit is connected with main controller, and signal can be carried out RMS-DC converter by the RMS-DC converter circuit, is convenient for main controller
It is acquired and handles, when the signal of the ultrasonic sensor 2 detected and uhf sensor is higher than the preset threshold of main controller
When value, it may be determined that shelf depreciation occurs for switchgear, meanwhile, main controller is switched according to 22 comprehensive descision SF6 of ultrasonic sensor
The position of shelf depreciation occurs for cabinet, and controls alarm unit alarm, and notifies patrol officer's SF6 switchgears to send out by gsm module
The position of raw shelf depreciation is handled.Preferably, in one embodiment of the utility model, the alarm unit uses light
Alarm can constantly flicker feux rouges according to main controller signal.
Specifically, in the another embodiment of the utility model, the main controller is controlled using C8051F410 microcontrollers
System has the characteristics of precision height, strong antijamming capability.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent substitution, improvement and etc. done should be included in the utility model
Within the scope of protection.
Claims (6)
1. a kind of partial discharge of switchgear ultrasonic alarm, including SF6 switchgears and supersonic reflectoscope, feature exist
In the supersonic reflectoscope includes ultrasonic sensor, uhf sensor, ultrasound examination host, and the ultrasonic wave passes
Sensor, the uhf sensor back side are equipped with adsorbable in the metal magnetic sheet on SF6 switchgear outer walls, and the metallic magnetic on piece is also
Equipped with the wireless transmission unit being connected with ultrasonic sensor, uhf sensor output end signal, the wireless transmission unit
Output end is connected with oscillograph, ultrasound examination host signal respectively.
2. a kind of partial discharge of switchgear ultrasonic alarm according to claim 1, which is characterized in that the ultrasound
Wave detection host includes signal processing circuit, main controller, gsm communication unit and alarm unit, the wireless transmission unit with
Signal is connected successively for signal processing circuit, main controller.
3. a kind of partial discharge of switchgear ultrasonic alarm according to claim 2, which is characterized in that the signal
Processing circuit includes charge translation circuit, pre-amplification circuit, filter circuit, postposition amplifying circuit and RMS-DC converter circuit.
4. a kind of partial discharge of switchgear ultrasonic alarm according to claim 1, which is characterized in that the ultrasound
Wave sensor uses PVDF piezoelectric film sensors, size 3cm*1cm.
5. a kind of partial discharge of switchgear ultrasonic alarm according to claim 1, which is characterized in that described wireless
Transmission module is zigbee communication modules.
6. a kind of partial discharge of switchgear ultrasonic alarm according to claim 1, which is characterized in that the ultrasound
Wave sensor, uhf sensor quantity are multiple, symmetrically stick in SF6 switchgear outer walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820275136.7U CN207908621U (en) | 2018-02-26 | 2018-02-26 | A kind of partial discharge of switchgear ultrasonic alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820275136.7U CN207908621U (en) | 2018-02-26 | 2018-02-26 | A kind of partial discharge of switchgear ultrasonic alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207908621U true CN207908621U (en) | 2018-09-25 |
Family
ID=63560211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820275136.7U Active CN207908621U (en) | 2018-02-26 | 2018-02-26 | A kind of partial discharge of switchgear ultrasonic alarm |
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| CN (1) | CN207908621U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763959A (en) * | 2019-09-24 | 2020-02-07 | 武汉汉源既济电力有限公司 | High-voltage switch cabinet partial discharge detection circuit and detection method thereof |
| CN110967605A (en) * | 2019-12-27 | 2020-04-07 | 陕西公众电气股份有限公司 | Universal ultrasonic sensor and monitoring device |
| CN111812459A (en) * | 2020-06-02 | 2020-10-23 | 深圳供电局有限公司 | Simulation test system applied to switch cabinet partial discharge live detection |
| CN112540274A (en) * | 2020-12-16 | 2021-03-23 | 江苏博润电气科技有限公司 | Switch cabinet partial discharge detection device and system |
-
2018
- 2018-02-26 CN CN201820275136.7U patent/CN207908621U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763959A (en) * | 2019-09-24 | 2020-02-07 | 武汉汉源既济电力有限公司 | High-voltage switch cabinet partial discharge detection circuit and detection method thereof |
| CN110763959B (en) * | 2019-09-24 | 2022-02-22 | 武汉汉源既济电力有限公司 | High-voltage switch cabinet partial discharge detection method |
| CN110967605A (en) * | 2019-12-27 | 2020-04-07 | 陕西公众电气股份有限公司 | Universal ultrasonic sensor and monitoring device |
| CN111812459A (en) * | 2020-06-02 | 2020-10-23 | 深圳供电局有限公司 | Simulation test system applied to switch cabinet partial discharge live detection |
| CN112540274A (en) * | 2020-12-16 | 2021-03-23 | 江苏博润电气科技有限公司 | Switch cabinet partial discharge detection device and system |
| CN112540274B (en) * | 2020-12-16 | 2023-02-28 | 江苏博润电气科技有限公司 | Switch cabinet partial discharge detection device and system |
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