CN105699860A - Composite sensor for 10kV distribution cable partial discharge online monitoring and positioning system - Google Patents
Composite sensor for 10kV distribution cable partial discharge online monitoring and positioning system Download PDFInfo
- Publication number
- CN105699860A CN105699860A CN201610035089.4A CN201610035089A CN105699860A CN 105699860 A CN105699860 A CN 105699860A CN 201610035089 A CN201610035089 A CN 201610035089A CN 105699860 A CN105699860 A CN 105699860A
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- CN
- China
- Prior art keywords
- field coil
- partial discharge
- coil skeleton
- distribution cable
- electrical field
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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
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
-
- 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
Abstract
The invention discloses a composite sensor for a 10kV distribution cable partial discharge online monitoring and positioning system. The composite sensor comprises an insulated housing, an electric field coil skeleton, an electric field coil, a magnetic field coil skeleton, and a magnetic field coil. The electric field coil skeleton and the magnetic field coil skeleton are disposed in the insulated housing. The electric field coil is uniformly wound around the electric field coil skeleton. The composite sensor for the 10kV distribution cable partial discharge online monitoring and positioning system may detect high-frequency partial discharge signals, positions discharge sources, and effectively increases positioning accuracy and reliability while reducing system complexity.
Description
Technical field
The present invention relates to 10kV distribution cable partial discharge monitoring and alignment system compound sensor。
Background technology
The ordinary life of 10kV distribution cable circuit is about 30 years, lays yet with modes such as being generally adopted direct-burried, comb, raceway groove and tunnel, and laying environment can greatly affect cable life with use state。Plus cables manufacturing or install time tiny flaw, overvoltage, temperature, mechanical stress, moisture content, compound, microorganism effect under, shelf depreciation can be excited, thus causing cable fault。The power failure range that cable line fault causes is wide, economic loss is big, social influence is serious。By the operation conditions of on-line monitoring cable, cable local discharge data are acquired, pretreatment, feature extraction carry out decision analysis, can effective trouble-saving generation。
At present, the Partial Discharge Detection of distribution cable and location technology are based on offline inspection technology, and offline inspection also positions shelf depreciation technology and has the features such as accurate positioning, however it is necessary that and cable is departed from from electrical network, affecting customer power supply, expend more manpower and material resources simultaneously, detection efficiency is relatively low。Therefore, the demand of charged/on-line monitoring cable local discharge orientation discharge point is extremely urgent。
Summary of the invention
The technical problem to be solved in the present invention is to provide and is possible not only to detection high frequency partial discharge signal, also can carry out discharge source location, while reducing system complexity, be effectively increased the accuracy of location and the 10kV distribution cable partial discharge monitoring of reliability and alignment system compound sensor。
For solving the problems referred to above, the present invention adopts the following technical scheme that
10kV distribution cable partial discharge monitoring and alignment system compound sensor, it is characterized in that: include insulation crust, electrical field coil skeleton, electrical field coil, field coil skeleton and field coil, described electrical field coil skeleton and field coil skeleton are located in insulation crust, described electrical field coil uniform winding is on electrical field coil skeleton, and described field coil uniform winding is on field coil skeleton。
As preferably, described electrical field coil skeleton is made up of high permeability materials, and described electrical field coil skeleton is I-shaped setting。
As preferably, described electrical field coil is the enamel-covered wire of wire diameter 0.6mm, and the described electrical field coil number of turn is 100-200 circle。
As preferably, described field coil skeleton is I-shaped setting。
As preferably, described field coil is the enamel-covered wire of wire diameter 1mm, and the described field coil number of turn is 20-35 circle。
As preferably, being provided with the first layer of silica gel between described electrical field coil skeleton and insulation crust, described electrical field coil skeleton is connected by the first silica gel and insulation crust are fixing。
As preferably, being provided with the second layer of silica gel between described field coil skeleton and insulation crust, described field coil skeleton is connected by the second layer of silica gel and insulation crust are fixing。
The invention have the benefit that on the earth lead that compound sensor is stuck in cable head and end, just collection and the location of local discharge signal can be completed, there is guarantee testing staff's safety, without changing the advantages such as cable connection, electrical field coil and field coil are designed as one, reduce the complexity of wiring during on-the-spot test, enhance the capacity of resisting disturbance of coil, the efficiency that improve detection reduces cost simultaneously, have that encryption/decryption speed is fast, lossless, non-intruding, easy-to-connect, can the advantages such as tuning on-line point of discharge, security performance be good。
Accompanying drawing explanation
Fig. 1 is the structure chart of 10kV distribution cable partial discharge monitoring of the present invention and alignment system compound sensor。
Fig. 2 is the installation diagram of 10kV distribution cable partial discharge monitoring of the present invention and alignment system compound sensor。
Detailed description of the invention
As depicted in figs. 1 and 2,10kV distribution cable partial discharge monitoring and alignment system compound sensor, it is characterized in that: include insulation crust 1, electrical field coil skeleton 2, electrical field coil 3, field coil skeleton 4 and field coil 5, described electrical field coil skeleton 2 and field coil skeleton 4 are located in insulation crust 1, described electrical field coil 3 uniform winding is on electrical field coil skeleton 2, and described field coil 5 uniform winding is on field coil skeleton 4。Described electrical field coil skeleton 2 is made up of high permeability materials, and described electrical field coil skeleton 2 is in I-shaped setting。Described electrical field coil 3 is the enamel-covered wire of wire diameter 0.6mm, and described electrical field coil 3 number of turn is 100-200 circle。Described field coil skeleton 4 is in I-shaped setting。Described field coil 5 is the enamel-covered wire of wire diameter 1mm, and described field coil 5 number of turn is 20-35 circle。Being provided with the first layer of silica gel (not shown) between described electrical field coil skeleton 2 and insulation crust 1, described electrical field coil skeleton 2 is connected by the first silica gel is fixing with insulation crust 1。Being provided with the second layer of silica gel (not shown) between described field coil skeleton 1 and insulation crust 1, described field coil skeleton 4 is connected by the second layer of silica gel is fixing with insulation crust 1。
When mounted, ring main unit 6 is provided with two, is connected with tested cable 7 respectively, blocks compound sensor 9 at the earth lead 8 of tested cable 7, compound sensor 9 internal diameter can need to regulate according to scene, and the field coil 5 of compound sensor 9 can gather the local discharge signal produced in tested cable 7。Local discharge signal sends into Signal Pretreatment unit 10 by field coil 5 output interface of compound sensor 9, and Signal Pretreatment unit 10 completes the amplification of signal, filter function。Signal Pretreatment unit 10 is connected with Signal acquiring and processing unit 11 by analog interface。Signal acquiring and processing unit 11 completes the functions such as the data acquisition of data, data storage, data analysis, feature judgement, atlas analysis, partial discharge location。Signal acquiring and processing unit 11 exports synchronizing signal by the electrical field coil 3 of compound sensor 9。
The invention have the benefit that on the earth lead that compound sensor is stuck in cable head and end, just collection and the location of local discharge signal can be completed, there is guarantee testing staff's safety, without changing the advantages such as cable connection, electrical field coil and field coil are designed as one, reduce the complexity of wiring during on-the-spot test, enhance the capacity of resisting disturbance of coil, the efficiency that improve detection reduces cost simultaneously, have that encryption/decryption speed is fast, lossless, non-intruding, easy-to-connect, can the advantages such as tuning on-line point of discharge, security performance be good。
The above, be only the specific embodiment of the present invention, but protection scope of the present invention be not limited thereto, any change expected without creative work or replacement, all should be encompassed within the protection domain that this use is novel。
Claims (7)
1.10kV distribution cable partial discharge monitoring and alignment system compound sensor, it is characterized in that: include insulation crust, electrical field coil skeleton, electrical field coil, field coil skeleton and field coil, described electrical field coil skeleton and field coil skeleton are located in insulation crust, described electrical field coil uniform winding is on electrical field coil skeleton, and described field coil uniform winding is on field coil skeleton。
2. 10kV distribution cable partial discharge monitoring according to claim 1 and alignment system compound sensor, it is characterised in that: described electrical field coil skeleton is made up of high permeability materials, and described electrical field coil skeleton is I-shaped setting。
3. 10kV distribution cable partial discharge monitoring according to claim 2 and alignment system compound sensor, it is characterised in that: described electrical field coil is the enamel-covered wire of wire diameter 0.6mm, and the described electrical field coil number of turn is 100-200 circle。
4. 10kV distribution cable partial discharge monitoring according to claim 3 and alignment system compound sensor, it is characterised in that: described field coil skeleton is I-shaped setting。
5. 10kV distribution cable partial discharge monitoring according to claim 4 and alignment system compound sensor, it is characterised in that: described field coil is the enamel-covered wire of wire diameter 1mm, and the described field coil number of turn is 20-35 circle。
6. 10kV distribution cable partial discharge monitoring according to claim 5 and alignment system compound sensor, it is characterized in that: be provided with the first layer of silica gel between described electrical field coil skeleton and insulation crust, described electrical field coil skeleton is connected by the first silica gel and insulation crust are fixing。
7. 10kV distribution cable partial discharge monitoring according to claim 6 and alignment system compound sensor, it is characterized in that: be provided with the second layer of silica gel between described field coil skeleton and insulation crust, described field coil skeleton is connected by the second layer of silica gel and insulation crust are fixing。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035089.4A CN105699860A (en) | 2016-01-19 | 2016-01-19 | Composite sensor for 10kV distribution cable partial discharge online monitoring and positioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035089.4A CN105699860A (en) | 2016-01-19 | 2016-01-19 | Composite sensor for 10kV distribution cable partial discharge online monitoring and positioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105699860A true CN105699860A (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610035089.4A Pending CN105699860A (en) | 2016-01-19 | 2016-01-19 | Composite sensor for 10kV distribution cable partial discharge online monitoring and positioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105699860A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283444A (en) * | 2018-11-26 | 2019-01-29 | 国网安徽省电力有限公司淮南供电公司 | Double principle cable local discharge sensors and its data fusion method |
| CN111551832A (en) * | 2020-06-01 | 2020-08-18 | 广西电网有限责任公司南宁供电局 | Method and device for high-precision positioning and noise removal of partial discharge of cable |
| US11567146B2 (en) | 2018-09-10 | 2023-01-31 | 3M Innovative Properties Company | Electrical power cable monitoring device using low side electrode and earth ground separation |
| US11604218B2 (en) | 2018-09-10 | 2023-03-14 | 3M Innovative Properties Company | Electrical power cable monitoring device including partial discharge sensor |
| US11670930B2 (en) | 2018-09-10 | 2023-06-06 | 3M Innovative Properties Company | Support structure for cable and cable accessory condition monitoring devices |
-
2016
- 2016-01-19 CN CN201610035089.4A patent/CN105699860A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11567146B2 (en) | 2018-09-10 | 2023-01-31 | 3M Innovative Properties Company | Electrical power cable monitoring device using low side electrode and earth ground separation |
| US11604218B2 (en) | 2018-09-10 | 2023-03-14 | 3M Innovative Properties Company | Electrical power cable monitoring device including partial discharge sensor |
| US11670930B2 (en) | 2018-09-10 | 2023-06-06 | 3M Innovative Properties Company | Support structure for cable and cable accessory condition monitoring devices |
| CN109283444A (en) * | 2018-11-26 | 2019-01-29 | 国网安徽省电力有限公司淮南供电公司 | Double principle cable local discharge sensors and its data fusion method |
| CN109283444B (en) * | 2018-11-26 | 2021-01-05 | 国网安徽省电力有限公司淮南供电公司 | Dual-principle cable partial discharge sensor and data fusion method thereof |
| CN111551832A (en) * | 2020-06-01 | 2020-08-18 | 广西电网有限责任公司南宁供电局 | Method and device for high-precision positioning and noise removal of partial discharge of cable |
| CN111551832B (en) * | 2020-06-01 | 2023-06-02 | 广西电网有限责任公司南宁供电局 | Cable partial discharge high-precision positioning and noise removing method and device |
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Application publication date: 20160622 |
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