CN209513977U - Partial discharge detection device - Google Patents
Partial discharge detection device Download PDFInfo
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- CN209513977U CN209513977U CN201822277254.4U CN201822277254U CN209513977U CN 209513977 U CN209513977 U CN 209513977U CN 201822277254 U CN201822277254 U CN 201822277254U CN 209513977 U CN209513977 U CN 209513977U
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Abstract
A kind of partial discharge detection device, including motion control mechanism, rotating mechanism and testing agency；Rotating mechanism includes support component and cursor, and cursor is rotatably dispose in support component, and support component is set on motion control mechanism, and support component and cursor are electrically connected with motion control mechanism respectively；Testing agency includes detection body and acoustic-electric combination detector, detection body is arranged on cursor, acoustic-electric combination detector includes magnetic signal device, ultrasonic signal device and sound Magnetic Sensor, magnetic signal device, ultrasonic signal device and sound Magnetic Sensor are separately positioned in detection body, and magnetic signal device, ultrasonic signal device harmony Magnetic Sensor are electrically connected with motion control mechanism respectively.Above-mentioned partial discharge detection device is able to detect this latency defect of shelf depreciation, has higher safety and actual effect, it better assures that the safety of cable, environmental change can be monitored at any time, then carry out detection operations, high degree of automation, convenient for operation, practicability is stronger.
Description
Technical field
The utility model relates to detection technique fields, more particularly to a kind of partial discharge detection device.
Background technique
Electric Power Equipment Insulation is in operation for a long time under the action of operating voltage, in particular with mentioning for voltage class
Height, the electric field intensity value that insulation position is born is very high, is easy to generate shelf depreciation in insulation weakness.Due to opening for shelf depreciation
Stage beginning energy is small, its electric discharge can't cause insulation breakdown immediately, the intact insulation position not yet discharged between electrode
The working voltage of equipment can still be sustained.But under long-play voltage, insulation damages caused by shelf depreciation are after supervention
Exhibition, eventually leads to the generation of insulation fault.According to China to the statistics of 110KV and following transformer damage situation, 50% be
Shelf depreciation gradually develops generation under working voltage.
Currently, high-tension electricity equipment checks insulation situation, prevention dielectric breakdown accident hair with non-pressure resistance and voltage-withstand test
It is raw, although this high pressure voltage-withstand test method can directly or indirectly judge the reliability of insulation, to similar shelf depreciation this
Kind of latency defect be it is indiscoverable, in addition during high pressure voltage-withstand test can also Damage to insulation, reduce the service life.
Utility model content
Based on this, it is necessary to be difficult to find this latency of shelf depreciation for existing high pressure voltage-withstand test method and lack
Fall into and during high pressure voltage-withstand test can also Damage to insulation the problem of, a kind of partial discharge detection device is provided.
A kind of partial discharge detection device, including motion control mechanism, rotating mechanism and testing agency；
The rotating mechanism includes support component and cursor, and the cursor is rotatably dispose in the support component,
The support component is set on the motion control mechanism, and the support component and the cursor are controlled with the movement respectively
Mechanism electrical connection processed；
The testing agency includes detection body and acoustic-electric combination detector, and the detection body is arranged in the cursor
On, the acoustic-electric combination detector includes magnetic signal device, ultrasonic signal device and sound Magnetic Sensor, the magnetic signal device, described
Ultrasonic signal device and the sound Magnetic Sensor are separately positioned in the detection body, the magnetic signal device, the ultrasonic wave
Signalling means and the sound Magnetic Sensor are electrically connected with the motion control mechanism respectively.
The testing agency further includes pulse current partial discharge detection device, the pulse current in one of the embodiments,
Partial discharge detection device is arranged in the detection body, and the pulse current partial discharge detection device is electrically connected with the motion control mechanism
It connects.
The motion control mechanism includes master controller, motion body, pulley assembly and fortune in one of the embodiments,
Dynamic driving assembly；
The master controller is set in the motion body, the movement driving assembly, the support component, described turn
Swing arm, the magnetic signal device, the ultrasonic signal device and the sound Magnetic Sensor are electrically connected with the master controller respectively；
The pulley assembly is movably set in the motion body, and the movement driving assembly setting is in the movement sheet
It is drivingly connected on body and with the pulley assembly, the support component is set in the motion body.
The pulley assembly includes at least one driving wheel and at least two universal wheels in one of the embodiments,；
Each driving wheel and each universal wheel are movably arranged on respectively in the motion body, and the movement drives
Component is drivingly connected with each driving wheel and each universal wheel respectively.
The surface of each driving wheel and each universal wheel is provided with anti-skid chequer in one of the embodiments,.
The support component includes bracket and sliding part in one of the embodiments, and the bracket is set to the fortune
On dynamic control mechanism, the guide rail extended along the direction perpendicular to the motion control mechanism, the cunning are provided on the bracket
Slide is set on the guide rail, and the sliding part is electrically connected with the motion control mechanism, and the cursor rotation is set
It is placed on the sliding part.
The support component further includes locking member in one of the embodiments, and the locking member is arranged in the sliding
On part, the locking member is electrically connected with the motion control mechanism, the locking member for lock or unclamp the sliding part and
The bracket.
It is provided on the sliding part and prolongs along the direction for being parallel to the motion control mechanism in one of the embodiments,
The rotation axis stretched, the cursor are rotatably dispose in the rotation axis.
Be additionally provided with lighting device on the motion control mechanism in one of the embodiments, the lighting device with
The motion control mechanism electrical connection.
The partial discharge detection device further includes communication module in one of the embodiments, the communication module respectively with
The motion control mechanism, the magnetic signal device, the ultrasonic signal device and sound Magnetic Sensor electrical connection.
Above-mentioned partial discharge detection device by the way that motion control mechanism is arranged, and passes through rotating mechanism on the motion control mechanism
Connecting detection mechanism allows testing agency to pass through the rotation and motion control of rotating mechanism under the control of motion control mechanism
The movement of mechanism carries out large-scale inspection for a long time to cable in electric power tunnel, and by magnetic signal device in testing agency,
The acoustic-electric combination detector of ultrasonic signal device and sound Magnetic Sensor composition detects fault point, accurately elicites shelf depreciation
Position of failure point is able to detect this latency defect of shelf depreciation, and use motion control mechanism compared with prior art
Automatic detecting has higher safety and actual effect than artificial detection, and detection is more comprehensive, can be with round-the-clock uninterrupted
It is detected, better assures that the safety of cable, environmental change can be monitored at any time, then carry out detection operations, automatically
Change degree is high, and convenient for operation, practicability is stronger.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the partial discharge detection device of an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the testing agency of an embodiment of the present invention.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.Many details are explained in the following description in order to abundant
Understand the utility model.But the utility model can be implemented with being much different from other way described herein, this field
Technical staff can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by following public affairs
The limitation for the specific embodiment opened.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.And
And " top " and " lower section " in the utility model only indicates relative position, is not offered as absolute position.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be with
It is directly to another element or may be simultaneously present centering elements.Term as used herein " vertically ", " level
", "upper", "lower", "left", "right" and similar statement for illustrative purposes only, be not offered as being uniquely to implement
Mode.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
In one embodiment, a kind of partial discharge detection device is provided, in the application, partial discharge detection refers to that shelf depreciation is examined
It surveys.As shown in Figures 1 and 2, the partial discharge detection device 10 includes: motion control mechanism 100, rotating mechanism 200 and detection machine
Structure 300；The rotating mechanism 200 includes support component 210 and cursor 220, and the cursor 220 is rotatably dispose in the branch
On support component 210, the support component 210 is set on the motion control mechanism 100, the support component 210 and described
Cursor 220 is electrically connected with the motion control mechanism 100 respectively；The testing agency 300 includes detection body 310 and acoustic-electric
Combination detector 320, the detection body 310 are arranged on the cursor, and the acoustic-electric combination detector includes magnetic signal
Device 321, ultrasonic signal device 322 and sound Magnetic Sensor 323, the magnetic signal device 321, the ultrasonic signal device 322 and institute
It states sound Magnetic Sensor 323 to be separately positioned in the detection body 310, the magnetic signal device 321, the ultrasonic signal device
322 and the sound Magnetic Sensor 323 be electrically connected respectively with the motion control mechanism 100.
Above-mentioned partial discharge detection device 10 by the way that motion control mechanism 100 is arranged, and passes through on motion control mechanism 100
200 connecting detection mechanism 300 of rotating mechanism, allows testing agency 300 to pass through rotation under the control of motion control mechanism 100
The rotation of mechanism 200 and the movement of motion control mechanism 100 carry out large-scale inspection for a long time to cable in electric power tunnel,
And it is combined and is visited by the acoustic-electric that magnetic signal device 321, ultrasonic signal device 322 and sound Magnetic Sensor 323 form in testing agency 300
It surveys device 320 to detect fault point, accurately elicites partial discharges fault point position and be able to detect office compared with prior art
This latency defect of portion's electric discharge, and there is higher safety than artificial detection using 100 automatic detecting of motion control mechanism
Property and actual effect, and detect it is more comprehensive, can uninterruptedly be detected with round-the-clock, better assure that the safety of cable
Property, environmental change can be monitored at any time, then carries out detection operations, and high degree of automation, convenient for operation, practicability is stronger.
In the present embodiment, partial discharge detection device 10 is used to carry out partial discharge detection to electric power tunnel power transmission cable.Specifically, it transports
Dynamic control mechanism 100 is for controlling the movement of rotating mechanism 200 and the rotation of testing agency 300, to change testing agency 300
In the investigative range of horizontal plane, and control the work of rotating mechanism 200 and testing agency 300.Specifically, rotating mechanism 200 is used
In driving 300 Relative motion control mechanism 100, testing agency namely versus environmental to be rotated, to change testing agency 300
Investigative range.Specifically, testing agency 300 is used to detect the fault point that shelf depreciation occurs, and accurately elicites part
Discharge fault point position.Further, cable occurs to generate ultrasonic wave and electromagnetic wave when shelf depreciation, and centered on fault point
It radiates around, when testing agency 300 detects ultrasonic wave and electromagnetic wave signal, since electromagnetic wave propagation speed is much larger than
Ultrasonic wave, and generally it can be thought that electromagnetic wave is light velocity propagation, that is, think that electromagnetic wave signal is traveled to from fault point
Time used in position where testing agency 300 is 0, then the distance between fault point and testing agency position
It indicates are as follows: detect the time difference of ultrasonic wave and electromagnetic wave signal multiplied by ultrasonic propagation velocity, since testing agency 300 runs
To what position it is known that can be obtained position of failure point according to the distance of fault point distance testing agency 300.
For the charge value of accurately measure shelf depreciation, in one of the embodiments, as shown in Fig. 2, the inspection
Surveying mechanism 300 further includes pulse current partial discharge detection device 330, and the pulse current partial discharge detection device 330 is arranged in the detection
On ontology 310, the pulse current partial discharge detection device 330 is electrically connected with the motion control mechanism 100.Pass through setting pulse electricity
Partial discharge detection device is flowed, so that pulse can be passed through when the case where partial discharge detection device is detected with shelf depreciation during inspection
Electric current partial discharge detection device accurately measures the charge value of shelf depreciation.In this way, passing through pulse current partial discharge detection device and acoustic-electric
The collective effect of combination detector can detect position and the charge value of shelf depreciation simultaneously, obtain the specific of shelf depreciation
Situation.
It is moved in electric power tunnel in order to facilitate partial discharge detection device, in one of the embodiments, as shown in Figure 1, institute
Stating motion control mechanism 100 includes master controller, motion body 110, pulley assembly 120 and movement driving assembly；The master control
Device processed is set in the motion body 110, the movement driving assembly, the support component 210, the cursor 220, institute
Magnetic signal device 321, the ultrasonic signal device 322 and the sound Magnetic Sensor 323 is stated to be electrically connected with the master controller respectively；
The pulley assembly 120 is movably set in the motion body 110, and the movement driving assembly is arranged in the motion body
It is drivingly connected on 110 and with the pulley assembly 120, the support component 210 is set in the motion body 110.This reality
It applies in example, the master controller and the movement driving assembly are arranged in the motion body 110.Movement driving assembly is used for
Driving pulley component movement, skidding component are used under the driving of movement driving assembly moved in electric power tunnel to drive detection
Mechanism detect to electric power tunnel.In this way, by setting movement driving assembly and pulley assembly, so that partial discharge detection fills
Setting can move in electric power tunnel to carry out partial discharge detection to electric power tunnel.
In order to facilitate the rotation of control partial discharge detection device, the pulley assembly includes extremely in one of the embodiments,
A few driving wheel and at least two universal wheels；Each driving wheel and each universal wheel are movably arranged on respectively in the fortune
On dynamic ontology, the movement driving assembly is drivingly connected with each driving wheel and each universal wheel respectively.In this way, by setting
Driving wheel and universal wheel are set, control partial discharge detection device is can be convenient and is rotated toward all directions, so that the spy of partial discharge detection device
It is wider to survey range.
Partial discharge detection device is out of control during electric power tunnel inspection in order to prevent, in one of the embodiments, respectively
The surface of the driving wheel and each universal wheel is provided with anti-skid chequer.It is anti-skidding by being arranged in driving wheel and universal wheel
Line avoids partial discharge detection device from skidding during form, prevents partial discharge detection device from losing during electric power tunnel inspection
Control.
In order to facilitate the height of adjusting detection mechanism, in one of the embodiments, as shown in Figure 1, the support component
210 include bracket 211 and sliding part 212, and the bracket 211 is set on the motion control mechanism 100, the bracket 211
On be provided with the guide rail extended along the direction perpendicular to the motion control mechanism 100, the sliding part 212 is slideably positioned in institute
It states on guide rail, the sliding part 212 is electrically connected with the motion control mechanism 100, and the cursor 220 is rotatably dispose in described
On sliding part 212.
In order to fix sliding part, the support component further includes locking member in one of the embodiments, the locking member
It is arranged on the sliding part, the locking member is electrically connected with the motion control mechanism, and the locking member is for locking or pine
Open the sliding part and the bracket.By setting locking member, sliding part can be consolidated when sliding part is adjusted to suitable position
It is fixed.
In order to drive testing agency to rotate, edge is provided on the sliding part in one of the embodiments, and is parallel to institute
The rotation axis that the direction of motion control mechanism extends is stated, the cursor is rotatably dispose in the rotation axis.
In order to adapt to the dark surrounds in electric power tunnel, in one of the embodiments, on the motion control mechanism also
It is provided with lighting device, the lighting device is electrically connected with the motion control mechanism.By being arranged on partial discharge detection device
Lighting device, partial discharge detection device can give electric power tunnel providing light inside, adapt to electric power tunnel in inspection on electric power tunnel
Dark surrounds in road.
In order to which the information when detecting generation partial discharges fault is sent to backstage, so that staff carries out failure
In time processing, the partial discharge detection device further includes communication module in one of the embodiments, the communication module respectively with
The motion control mechanism, the magnetic signal device, the ultrasonic signal device and sound Magnetic Sensor electrical connection.In this way, logical
Cross setting communication module, motion control mechanism can be by communication module by the magnetic signal device, the ultrasonic signal device and institute
The signal for stating the detection of sound Magnetic Sensor is sent to background server, and staff can timely obtain the information to break down simultaneously
Processing in time.
The communication module is wireless communication module in one of the embodiments,.In one embodiment, the communication
Module is 3G/4G wireless communication module, and in one embodiment, the communication module is WIFI (WIreless-FIdelity)
Communication module, in the present embodiment, communication module is wireless module, in this way, communication module is by Radio Access Network, to realize
With the communication connection of background server.
In order to enable staff can have found partial discharges fault in time, and in one embodiment, partial discharge detection device
It further include alarm mechanism, the alarm mechanism is arranged on the motion control mechanism and is electrically connected with the motion control mechanism
It connects.The motion control mechanism is also used to control alarm mechanism starting work when detecting and partial discharges fault occurring, that is, transports
Dynamic control mechanism be also used to detect occur partial discharges fault when control alarm mechanism sound an alarm.In one embodiment
In, the alarm mechanism is voice guard, and the voice guard is buzzer.In one embodiment, the alarming machine
Structure is light-emitting alarm, and the light-emitting alarm is LED light.In one embodiment, the alarm mechanism is acousto-optic report
Alert device.
In order to allow partial discharge detection device to power off work, the partial discharge detection device is also in one of the embodiments,
Including battery, the battery is mounted on the motion control mechanism, the battery and motion control mechanism electricity
Connection.Battery is used to power to partial discharge detection device.In this way, powering by battery to partial discharge detection device, make infrared inspection
Survey robot can be used normally without plug-in so that infrared detection robot does not need to plug, moving range also not by
The limitation of cable and socket increases the flexibility that infrared detection robot uses.
In order to more comprehensively detect electric power tunnel, rotation is provided on the sliding part in one of the embodiments,
Component, the cursor are rotatably dispose on the sliding part by the runner assembly, and the runner assembly includes rotation electricity
Machine, rotation axis and rotating member, the rotary electric machine are electrically connected with the motion control mechanism, the rotary electric machine and the rotation
Axis is drivingly connected, and the rotation axis is connect with the rotating member, and the cursor is connect with the rotating member.In this way, rotation electricity
Machine drives rotating member rotation by rotation axis, and the cursor connecting with rotating member is rotated in electric power tunnel,
360 degree of more comprehensive detections are carried out to electric power tunnel.
In order to control the speed of runner assembly, the runner assembly further includes gear set in one of the embodiments, institute
Rotation axis is stated to connect by the gear set with the rotating member.The gear set includes setting in one of the embodiments,
In in the rotation axis the first rotate gear, be set to the rotating member in the one side of the cursor second rotation
Gear and the third rotate gear engaged respectively with first rotate gear and second rotate gear, i.e., it is first turn described
Moving gear is connect by the third rotate gear with second rotate gear.In one of the embodiments, described first
The diameter of rotate gear is less than the diameter of second rotate gear, and the diameter of second rotate gear turns greater than the third
The diameter of moving gear, in this way, being relatively large in diameter due to the second rotate gear, the diameter of the first rotate gear is smaller, the second rotation
For the revolving speed of gear less than the revolving speed of the first rotate gear, third rotate gear subtracts the second rotate gear speed
It is small, the speed of runner assembly is controlled, and rotary electric machine is rotated by rotation axis drive gear set, the rotation of gear set drives again
The rotation of rotating member, rotating member drives cursor rotation, and then limits the velocity of rotation of cursor, so that testing agency is more quasi-
Really detect whether each position has generation partial discharges fault.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of partial discharge detection device, which is characterized in that the partial discharge detection device includes: motion control mechanism, rotating mechanism
And testing agency；
The rotating mechanism includes support component and cursor, and the cursor is rotatably dispose in the support component, described
Support component is set on the motion control mechanism, the support component and the cursor respectively with the motion control machine
Structure electrical connection；
The testing agency includes detection body and acoustic-electric combination detector, and the detection body is arranged on the cursor,
The acoustic-electric combination detector includes magnetic signal device, ultrasonic signal device and sound Magnetic Sensor, the magnetic signal device, the ultrasound
Wave signalling means and the sound Magnetic Sensor are separately positioned in the detection body, the magnetic signal device, the ultrasonic signal
Device and the sound Magnetic Sensor are electrically connected with the motion control mechanism respectively.
2. partial discharge detection device according to claim 1, which is characterized in that the testing agency further includes pulse current office
Put detector, the pulse current partial discharge detection device is arranged in the detection body, the pulse current partial discharge detection device with
The motion control mechanism electrical connection.
3. partial discharge detection device according to claim 1, which is characterized in that the motion control mechanism includes main control
Device, motion body, pulley assembly and movement driving assembly；
The master controller is set in the motion body, the movement driving assembly, the support component, the rotation
Arm, the magnetic signal device, the ultrasonic signal device and the sound Magnetic Sensor are electrically connected with the master controller respectively；
The pulley assembly is movably set in the motion body, and the movement driving assembly is arranged in the motion body
And be drivingly connected with the pulley assembly, the support component is set in the motion body.
4. partial discharge detection device according to claim 3, which is characterized in that the pulley assembly includes at least one driving
Wheel and at least two universal wheels；
Each driving wheel and each universal wheel are movably arranged on respectively in the motion body, the movement driving assembly
It is drivingly connected respectively with each driving wheel and each universal wheel.
5. partial discharge detection device according to claim 4, which is characterized in that each driving wheel and each universal wheel
Surface is provided with anti-skid chequer.
6. partial discharge detection device according to claim 1, which is characterized in that the support component includes bracket and sliding
Part, the bracket are set on the motion control mechanism, are provided on the bracket along perpendicular to the motion control mechanism
The guide rail that extends of direction, the sliding part is slideably positioned on the guide rail, the sliding part and the motion control mechanism
Electrical connection, the cursor are rotatably dispose on the sliding part.
7. partial discharge detection device according to claim 6, which is characterized in that the support component further includes locking member, institute
It states locking member to be arranged on the sliding part, the locking member is electrically connected with the motion control mechanism, and the locking member is used for
Lock or unclamp the sliding part and the bracket.
8. partial discharge detection device according to claim 6, which is characterized in that be provided with edge on the sliding part and be parallel to institute
The rotation axis that the direction of motion control mechanism extends is stated, the cursor is rotatably dispose in the rotation axis.
9. partial discharge detection device according to claim 1, which is characterized in that be additionally provided with photograph on the motion control mechanism
Bright device, the lighting device are electrically connected with the motion control mechanism.
10. partial discharge detection device according to claim 1, which is characterized in that the partial discharge detection device further includes communication
Module, the communication module respectively with the motion control mechanism, the magnetic signal device, the ultrasonic signal device and the sound
Magnetic Sensor electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822277254.4U CN209513977U (en) | 2018-12-29 | 2018-12-29 | Partial discharge detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822277254.4U CN209513977U (en) | 2018-12-29 | 2018-12-29 | Partial discharge detection device |
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| Publication Number | Publication Date |
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| CN209513977U true CN209513977U (en) | 2019-10-18 |
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ID=68199149
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541415A (en) * | 2018-12-29 | 2019-03-29 | 广州供电局有限公司 | Partial discharge detection device |
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2018
- 2018-12-29 CN CN201822277254.4U patent/CN209513977U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541415A (en) * | 2018-12-29 | 2019-03-29 | 广州供电局有限公司 | Partial discharge detection device |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201021 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
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| TR01 | Transfer of patent right |