CN110244203A - Partial discharge detecting system and partial discharge detection device - Google Patents
Partial discharge detecting system and partial discharge detection device Download PDFInfo
- Publication number
- CN110244203A CN110244203A CN201910548527.0A CN201910548527A CN110244203A CN 110244203 A CN110244203 A CN 110244203A CN 201910548527 A CN201910548527 A CN 201910548527A CN 110244203 A CN110244203 A CN 110244203A
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- Prior art keywords
- partial discharge
- detection device
- signal
- antenna
- discharge detection
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The present invention relates to a kind of partial discharge detecting system and partial discharge detection device, partial discharge detection device includes supporting element, reflection pole plate, antenna and video-frequency connector, wherein reflection pole plate is set on supporting element, reflection pole plate is for reflecting local discharge signal.Antenna is set on reflection pole plate, for acquiring local discharge signal.Radio frequency connector is connect with antenna, and is used for connection signal processing equipment.Above-mentioned partial discharge detection device can carry out non-contact detection to the shelf depreciation of Voltage Cable Lines Construction, and using the intensity of local discharge signal can increase with distance and the characteristics of rapid decay, the local discharge signal of different location is detected by mobile partial discharge detection device, then the intensity of the local discharge signal of different location is compared, the strongest position of local discharge signal intensity is the position in partial discharge source.
Description
Technical field
The present invention relates to power network line maintenance technology fields, fill more particularly to a kind of partial discharge detecting system and partial discharge detection
It sets.
Background technique
Shelf depreciation refers to the generation between the electrodes but not electric discharge phenomena of penetrating electrode, it is due to apparatus insulated inside
There are defect caused by light current or production process, occur to repeat breakdown and extinguishing under high electric-field intensity effect.?
It is common problem in high-voltage isulation medium that shelf depreciation occurs under the action of high-strength electric field, although shelf depreciation is generally not
The penetrability of dielectric can be caused to puncture, but dielectric especially organic dielectric local damage can be caused.If part
It discharges long-term existence, will lead to dielectric deterioration, or even breakdown power equipment under certain condition.Therefore shelf depreciation inspection is carried out
Survey the insulation status for being not only able to understand equipment, moreover it is possible to find the problem of many related manufactures are with installation in time, it is determining absolutely
The reason of reason hinders and its severity.
Voltage Cable Lines Construction electrification Partial Discharge Detection generallys use high-frequency pulse current method, but this method is in cable termination
When being connect with aerial condutor or power transformation station equipment, the local discharge signal detected at cable termination can not be carried out effective
Positioning is to confirm partial discharge source.
Summary of the invention
Based on this, it is necessary to for how to position shelf depreciation source problem, provide a kind of partial discharge detecting system and partial discharge inspection
Survey device.
A kind of partial discharge detection device, comprising:
Supporting element；
Pole plate is reflected, is set on the supporting element, for reflecting local discharge signal；
Antenna is set on the reflection pole plate, for acquiring the local discharge signal；And
Radio frequency connector is connect with the antenna, and is used for connection signal processing equipment.
Above-mentioned partial discharge detection device can be reflected by reflection pole plate and enhance Voltage Cable Lines Construction since shelf depreciation produces
Raw local discharge signal, so that antenna can collect the local discharge signal for reflecting and enhancing by reflecting pole plate.And office
The intensity that local discharge signal is obtained on external signal handling equipment can be sent to by radio frequency connector by putting detection device
Size carries out non-contact detection to the shelf depreciation of Voltage Cable Lines Construction to realize.Since local discharge signal has width
The intensity of the feature of spectrum distribution, local discharge signal can increase and rapid decay with distance, i.e., closer to partial discharge source, partial discharge inspection
Surveying device can be detected that local discharge signal is stronger, to be put by the part of mobile partial discharge detection device detection different location
Then electric signal compares the intensity of the local discharge signal of different location, the strongest position of local discharge signal intensity is office
The position of portion's discharge source.
The partial discharge detection device further includes protective cover in one of the embodiments, and the protective cover is set to described
On reflection pole plate and it is located at outside the antenna.
The protective cover includes cover and connected unit in one of the embodiments, and the cover is located at the day
Outside line, the connected unit connect far from the side of supporting element with the reflection pole plate and covers the reflection pole plate.
The supporting element offers the first connecting hole in one of the embodiments, and the reflection pole plate offers second
Connecting hole, and first connecting hole is communicated with second connecting hole, and the radio frequency connector is arranged in described first and connects
It connects in hole and second connecting hole.
The partial discharge detection device further includes mounting flange and connector, the fixation in one of the embodiments,
Flange is set in outside the radio frequency connector and is connect by the connector with the supporting element.
The partial discharge detection device further includes handle in one of the embodiments, and the handle is set to the support
Side of the part far from the antenna.
The partial discharge detection device further includes fixed feet in one of the embodiments, and the fixed feet is set to described
Side of the supporting element far from the antenna, the fixed feet with foot prop holder for connecting.
A kind of partial discharge detecting system, including signal handling equipment and partial discharge detection device as described above, the signal
Processing equipment is connect with the radio frequency connector far from described antenna one end, and the signal handling equipment is for adopting the antenna
The local discharge signal collected is converted into sound signal or picture signal.
Above-mentioned partial discharge detecting system can be reflected by the reflection pole plate of partial discharge detection device and enhance high-voltage cable routing
In the local discharge signal that shelf depreciation generates, enhanced local discharge signal can be collected by antenna, and by penetrating
Local discharge signal is sent on signal handling equipment by frequency connector, and signal handling equipment can convert local discharge signal to
The sound signal or picture signal that people can recognize are to feed back the intensity size of local discharge signal out, to realize to high pressure
The shelf depreciation of cable run carries out non-contact detection.Since local discharge signal has the feature of wideband Spectral structure, part
The intensity of discharge signal can increase and rapid decay with distance, i.e., closer to partial discharge source, partial discharge detection device can be detected office
Portion's discharge signal is stronger, to detect the local discharge signal of different location by mobile partial discharge detection device, then by pair
The intensity of the local discharge signal of the different location reflected than signal handling equipment, local discharge signal intensity are strongest
Position is the position of Partial Discharge Sources.
The partial discharge detection device further includes coaxial cable in one of the embodiments, and the radio frequency connector is separate
One end of the antenna is connect by the coaxial cable with the signal handling equipment.
The signal handling equipment is partial discharge detection instrument or oscillograph in one of the embodiments,.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the partial discharge detection device of an embodiment；
Fig. 2 is the Structure explosion diagram of partial discharge detection device shown in Fig. 1.
Description of symbols:
100, local detection device；110, supporting element；111, handle；112, fixed feet；120, pole plate is reflected；130, day
Line；140, radio frequency connector；150, protective cover；151, cover；152, connected unit；161, mounting flange；162, connector.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " "upper" "lower" and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Heretofore described " first ", " second " do not represent specific quantity and sequence, are only used for the differentiation of title.
The embodiment of the present application provides a kind of partial discharge detection device 100, the part for the ultrahigh frequency band to cable termination
Discharge signal is detected.Wherein, local discharge signal refers to that cable termination is generated extra-high when there is shelf depreciation
The electromagnetic wave signal of frequent section, which can be in the form of wireless signal to airborne spread.The part of ultrahigh frequency band
Discharge signal refers to the frequency number magnitude of local discharge signal in gigahertz (GHZ) (GHz) rank.Specifically, referring to Fig. 1 and Fig. 2, one
The partial discharge detection device 100 of embodiment includes supporting element 110, reflection pole plate 120, antenna 130 and radio frequency connector 140.Its
In, supporting element 110 is hard material, plays support fixed function.Reflection pole plate 120 is for reflecting and enhancing cable termination due to office
The local discharge signal of portion's electric discharge and sending, antenna 130 is for acquiring the local discharge signal.Radio frequency connector 140 is used for will
The collected signal processing of partial discharge of antenna 130 is simultaneously transmitted on external signal handling equipment, for signal handling equipment
The intensity of local discharge signal is analyzed and feeds back to operator.
Specifically, the upper of supporting element 110 is arranged in reflection pole plate 120, preferably, reflection pole plate 120 is layed in supporting element
On 110 surface.Antenna 130 is set on reflection pole plate 120, preferably, antenna 130 is located at reflection pole plate 120 far from branch
The side of support member 110, and it is located at the center of reflection pole plate 120.One end of radio frequency connector 140 is connect with antenna 130, radio frequency
The other end of connector 140 with signal handling equipment for connecting.
Above-mentioned partial discharge detection device 100 is by 120 energy reflection enhancement Voltage Cable Lines Construction of reflection pole plate due to shelf depreciation
And the local discharge signal generated, so that antenna 130 can acquire the shelf depreciation letter through reflecting 120 reflection enhancement of pole plate
Number.And local discharge signal can be sent to external signal processing by radio frequency connector 140 and set by partial discharge detection device 100
The intensity size of local discharge signal is obtained on standby, to realize that the shelf depreciation progress to Voltage Cable Lines Construction is contactless
Detection.Since local discharge signal has the feature of wideband Spectral structure, the intensity of local discharge signal can be fast with distance increase
Speed decaying, i.e., closer to partial discharge source, it is stronger that partial discharge detection device 100 can be detected local discharge signal, to pass through movement
Partial discharge detection device 100 detects the local discharge signal intensity of different location, then compares the shelf depreciation letter of different location
Number intensity, the strongest position of local discharge signal intensity is the position in partial discharge source.
It specifically, further include protective cover 150 with continued reference to Fig. 1 and Fig. 2 partial discharge detection device 100, protective cover 150 is arranged
In reflection pole plate 120 on and be located at outside antenna 130.Protective cover 150 for protecting antenna 130, avoid antenna 130 by
Lead to deformation or damage problem to external impact.Further, protective cover 150 includes cover 151 and connected unit 152, is connected
Consecutive 152 extending radially outwardly along cover 151.Cover 151 is the barrel shape structure with opening.Cover 151 is located at antenna
Outside 130, connected unit 152 connect far from the side of supporting element 110 with reflection pole plate 120 and covers reflection pole plate 120.To protect
Cover 150 is other than it can protect antenna 130 by cover 151, moreover it is possible to be carried out by 152 pairs of reflection pole plates 120 of connected unit
Protection prevents reflection pole plate 120 to be worn or corrode and damage.Preferably, the material of protective cover 150 is plastics or other non-gold
The hard material of category.
Further, supporting element 110 offers the first connecting hole, and reflection pole plate 120 offers the second connecting hole, and the
One connecting hole is communicated with the second connecting hole.Radio frequency connector 140 is arranged in the first connecting hole and second connecting hole, and
And the both ends of radio frequency connector 140 are pierced by the first connecting hole and the second connecting hole respectively.Further, partial discharge detection device 100
It further include mounting flange 161 and connector 162, mounting flange 161 is set in outside radio frequency connector 140, and mounting flange
161 are fixedly connected with radio frequency connector 140.Mounting flange 161 is connect by connector 162 with supporting element 110.Specifically,
The periphery of one connecting hole and the second connecting hole is also symmetrically arranged with multiple locking holes, and connector 162 is arranged on mounting flange 161
And it is threaded through in locking hole.The quantity of connector 162 matches with position and locking hole, to pass through connector 162 and locking
Hole cooperation, which can be realized, is fixed on mounting flange 161 and radio frequency connector 140 on supporting element 110.Preferably, in the present embodiment
In, radio frequency connector 140 can be N Connector.
Further, partial discharge detection device 100 further includes handle 111, and handle 111 is set to supporting element 110 far from antenna
130 side.Handle 111 is grasped for user, consequently facilitating the carrying and use of partial discharge detection device 100.Further,
Partial discharge detection device 100 further includes fixed feet 162, and fixed feet 162 is set to side of the supporting element 110 far from antenna 130, fixed
Foot 162 with foot prop holder for connecting.Specifically, when detect for a long time, by the way that fixed feet 162 and handle 111 are set
It sets and on foot prop holder partial discharge detection device 100 is fixed on foot prop holder, avoid user and need to grasp for a long time
Handle 111 alleviates user's workload.
Preferably, antenna 130 and the material for reflecting pole plate 120 are copper, supporting element 110, handle 111 and fixed feet
162 material is epoxy resin.Further, in the present embodiment, antenna 130 is linear type antenna 130.It needs to illustrate
It is that in other embodiments, antenna 130 can also have other structures, such as antenna 130 includes mobile jib and connect with mobile jib
At least two struts, one end of mobile jib and radio frequency connector 140, the other end of mobile jib are connect at least two struts, and extremely
Few two struts are arranged radially, to improve the signal acquisition efficiency and accuracy of antenna.
Further, present invention also provides a kind of partial discharge detecting system, including signal handling equipment and any of the above-described
The partial discharge detection device 100 of embodiment, signal handling equipment are connect with the radio frequency connector 140 of partial discharge detection device 100.Specifically
Ground, partial discharge detection device 100 further include coaxial cable, the one end of radio frequency connector 140 far from antenna 130 by coaxial cable with
Signal handling equipment connection.Signal handling equipment is used to convert sound signal for the collected local discharge signal of antenna 130
Or picture signal, so that user can judge the power of local discharge signal by sound signal or picture signal, in turn
Judge the position in partial discharge source.Preferably, signal handling equipment is partial discharge detection instrument or oscillograph.Specifically, partial discharge detection instrument
The partial discharge that partial discharge detection device 100 detects can be converted to audio signal, user is allowed to hear these sound through earphone,
And in see on pointer signal strength indicate.The partial discharge that partial discharge detection device 100 detects can be converted to waveform letter by oscillograph
Number, allow user to obtain local signal strength information by observing waveform characteristics.
Above-mentioned partial discharge detecting system can be routed by the 120 reflection enhancement high-voltage cable of reflection pole plate of partial discharge detection device
In the local discharge signal that shelf depreciation generates, enhanced local discharge signal can be collected by antenna 130, and pass through
Local discharge signal is sent on signal handling equipment by radio frequency connector 140, and signal handling equipment can be by local discharge signal
It is converted into sound signal or picture signal that user can recognize, so that user judges that the intensity of local discharge signal is big
It is small, and then realize and non-contact detection is carried out to the shelf depreciation of Voltage Cable Lines Construction.Since local discharge signal has wideband
The feature of Spectral structure, local discharge signal can increase and intensity rapid decay with distance, i.e., fill closer to partial discharge source partial discharge detection
Setting 100 can be detected that local discharge signal is stronger, to detect the office of different location by mobile partial discharge detection device 100
Portion's discharge signal, the intensity of the local discharge signal of the different location then fed back by contrast signal processing equipment,
The strongest position of local discharge signal intensity is the position in partial discharge source.
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.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of partial discharge detection device characterized by comprising
Supporting element；
Pole plate is reflected, is set on the supporting element, for reflecting local discharge signal；
Antenna is set on the reflection pole plate, for acquiring the local discharge signal；And
Radio frequency connector is connect with the antenna, and is used for connection signal processing equipment.
2. partial discharge detection device according to claim 1, which is characterized in that the partial discharge detection device further includes protection
Cover, the protective cover are set on the reflection pole plate and are located at outside the antenna.
3. partial discharge detection device according to claim 2, which is characterized in that the protective cover includes cover and connection
Platform, the cover are located at outside the antenna, and the connected unit is connect with the reflection pole plate far from the side of the supporting element
And cover the reflection pole plate.
4. partial discharge detection device according to claim 1, which is characterized in that the supporting element offers the first connecting hole,
The reflection pole plate offers the second connecting hole, and first connecting hole is communicated with second connecting hole, the radio frequency
Connector is arranged in first connecting hole and second connecting hole.
5. partial discharge detection device according to claim 1, which is characterized in that the partial discharge detection device further includes fixation
Blue and connector, the mounting flange are set in outside the radio frequency connector and are connected by the connector and the supporting element
It connects.
6. partial discharge detection device according to claim 1, which is characterized in that the partial discharge detection device further includes handle,
The handle is set to side of the supporting element far from the antenna.
7. partial discharge detection device according to claim 1, which is characterized in that the partial discharge detection device further includes fixing
Foot, the fixed feet are set to side of the supporting element far from the antenna, and the fixed feet with foot prop holder for connecting.
8. a kind of partial discharge detecting system, which is characterized in that including any in signal handling equipment and such as the claims 1-7
Partial discharge detection device described in, the signal handling equipment are connect with the radio frequency connector far from described antenna one end, institute
Signal handling equipment is stated for converting sound signal or picture signal for the collected local discharge signal of the antenna.
9. partial discharge detecting system according to claim 8, which is characterized in that the partial discharge detection device further includes coaxial line
Cable, the one end of the radio frequency connector far from the antenna are connect by the coaxial cable with the signal handling equipment.
10. partial discharge detecting system according to claim 8, which is characterized in that the signal handling equipment is partial discharge detection
Instrument or oscillograph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910548527.0A CN110244203B (en) | 2019-06-24 | 2019-06-24 | Partial discharge detection system and partial discharge detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910548527.0A CN110244203B (en) | 2019-06-24 | 2019-06-24 | Partial discharge detection system and partial discharge detection device |
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| CN110244203A true CN110244203A (en) | 2019-09-17 |
| CN110244203B CN110244203B (en) | 2022-03-01 |
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| CN201910548527.0A Active CN110244203B (en) | 2019-06-24 | 2019-06-24 | Partial discharge detection system and partial discharge detection device |
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|---|---|
| CN110244203B (en) | 2022-03-01 |
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