CN107121623A - A kind of insulating tube type busbar partial discharge monitoring system - Google Patents
A kind of insulating tube type busbar partial discharge monitoring system Download PDFInfo
- Publication number
- CN107121623A CN107121623A CN201710255133.7A CN201710255133A CN107121623A CN 107121623 A CN107121623 A CN 107121623A CN 201710255133 A CN201710255133 A CN 201710255133A CN 107121623 A CN107121623 A CN 107121623A
- Authority
- CN
- China
- Prior art keywords
- insulating tube
- tube type
- type busbar
- main frame
- monitoring system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- G01R31/12—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
-
- 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
Abstract
The present invention relates to a kind of insulating tube type busbar partial discharge monitoring system, including the ultrasonic sensor and current sensor on insulating tube type busbar, for gathering ultrasonic signal and electric signal during insulating tube type busbar shelf depreciation, the output of ultrasonic sensor and current sensor is connected with filter and amplification module, the filter and amplification module docking collection of letters number is transferred to data collecting card after being filtered amplification, data collecting card will receive after signal carries out analog/digital conversion and be sent to analysis main frame, analyze main frame and discharge characteristic amount extraction is carried out to local discharge signal, pattern-recognition and data base administration, provide insulating tube type busbar insulation defect type and insulation degradation degree.Pattern, the type and extent that the present invention realizes to insulating tube type busbar local discharge signal are recognized, so as to make rational assessment to insulation degradation degree.
Description
Technical field
The present invention relates to insulating tube type busbar partial discharge monitoring technical field, be characterized in that a kind of insulating tube type busbar is local
Electric discharge monitoring system, it picks up the local discharge signal of tube type bus using ultrasonic sensor with current sensor, so that right
The insulation degradation and damaged condition of tube type bus are effectively assessed.
Background technology
Insulating tube type busbar is a kind of novel bus form developed in recent years, and being used in middle low-voltage field has current-carrying
Amount is big, good insulation preformance, the advantage that appearance and size is small, installations is simple and convenient and accommodative ability of environment is strong, in recent years generating,
The industries such as power transformation, petroleum and petrochemical industry, steel and other new energy fields are more and more applied.In transformer station, now
Through as conductor is coupled in main transformer, between low-pressure side and distribution facility, obtaining better effects.As insulating tube type busbar should
Increasingly extensive, the research of its detection technique becomes particularly significant.Product quality that isolated bus manufacturing enterprise is sold and
Technological level in installation process is uneven, occurs impurity, micropore, semi-conductive layer projection or lamination defect inside insulating barrier,
The generation of shelf depreciation may be caused, shelf depreciation develops into electric tree by accumulation, puncturing for major insulation, shadow are most caused at last
Ring the reliability of network system.Further, since isolated bus transition joint is complicated, therefore influence the factor of its insulating properties
A lot, and generally manual manufacture at the scene, bad technique easily leaves potential faults.If isolated bus band defect is run, generate electricity
When machine and transformer low voltage side bus break down, differential protection will be started, generator and transformer is tripped, influence is whole
Hair, electric power system.Therefore, Partial Discharge Detection is carried out to insulating tube type busbar, and its insulation degradation degree is implemented effectively to comment
Estimate, for ensureing that power system security is significant.But existing electric signal measurement method faces electromagnetic environment complexity,
Interference noise is big, and in-site measurement needs ground wire or equipment neutral point, is not suitable for in-site measurement.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, and to propose a kind of insulating tube type busbar partial discharge monitoring system
System.
The present invention solves its technical problem and takes following technical scheme to realize：
A kind of insulating tube type busbar partial discharge monitoring system, including the supersonic sensing on insulating tube type busbar
Device and current sensor, possess the ultrasound during ultrasonic sensor collection insulating tube type busbar shelf depreciation of electrical isolation characteristic
Ripple signal, electric signal during current sensor collection insulating tube type busbar shelf depreciation for fixed phase, ultrasonic sensor
Output with current sensor is connected with filter and amplification module, and the filter and amplification module docking collection of letters number, which is filtered after amplification, to be transmitted
To data collecting card, data collecting card is sent to analysis main frame after the local discharge signal received is carried out into analog/digital conversion, point
Analyse main frame and discharge characteristic amount extraction, pattern-recognition and data base administration are carried out to local discharge signal by embedded software, provide
Insulating tube type busbar insulation defect type and insulation degradation degree.
Moreover, the analysis main frame is connected with touch-screen display, the operation for analyzing main frame is mutual by touch-screen display
It is dynamic to complete.
Moreover, the center operating frequency of the ultrasonic sensor is 40kHz.
Advantages and positive effects of the present invention are：
1st, the present invention picks up the local discharge signal of insulating tube type busbar by ultrasonic sensor and current sensor, from
And the insulation degradation and damaged condition of insulating tube type busbar are effectively assessed.
2nd, ultrasonic sensor is as a kind of non-electrical measuring device in the present invention, and it is disturbed by electromagnetic signal is influenceed
It is smaller, so as to reliably detect out local discharge signal.
3rd, the present invention can carry out pattern-recognition to local discharge signal, determine the type and extent of shelf depreciation, so that
Rational assessment is made to insulation degradation degree.
Brief description of the drawings
Fig. 1 is the circuit theory schematic diagram of present system.
Embodiment
The embodiment of the present invention is further described below：It is emphasized that embodiment of the present invention is explanation
Property, rather than it is limited, therefore the present invention is not limited to the embodiment described in embodiment, it is every by this area
The other embodiment that technical staff's technique according to the invention scheme is drawn, also belongs to the scope of protection of the invention.
A kind of insulating tube type busbar partial discharge monitoring system, as shown in figure 1, including on insulating tube type busbar
Ultrasonic sensor and current sensor, the ultrasonic sensor collection insulating tube type busbar for possessing electrical isolation characteristic are locally put
Ultrasonic wave when electric, electric signal during current sensor collection insulating tube type busbar shelf depreciation, for providing shelf depreciation
The output of reference phase signal, ultrasonic sensor and current sensor is connected with filter and amplification module, filter and amplification module pair
Reception signal, which is filtered after amplification, is transferred to data collecting card, and data collecting card carries out the local discharge signal received
Analysis main frame is sent to after analog/digital conversion, analysis main frame carries out discharge characteristic amount to local discharge signal by embedded software and carried
Take, pattern-recognition and data base administration, provide tube type bus insulation defect type and insulation degradation degree, be the event of technical staff
Barrier judges or other decision-makings provide reference information.
In the specific implementation of the present invention, the analysis main frame is connected with touch-screen display, and the operation of analysis main frame is led to
Cross touch-screen display interaction completion.
In the specific implementation of the present invention, the center operating frequency of the ultrasonic sensor is 40kHz.
Claims (3)
1. a kind of insulating tube type busbar partial discharge monitoring system, it is characterised in that：Including on insulating tube type busbar
Ultrasonic sensor and current sensor, the ultrasonic sensor collection insulating tube type busbar for possessing electrical isolation characteristic are locally put
Ultrasonic signal when electric, electric signal during current sensor collection insulating tube type busbar shelf depreciation for fixed phase, surpasses
The output of sonic sensor and current sensor is connected with filter and amplification module, and the filter and amplification module docking collection of letters number is filtered
Data collecting card is transferred to after amplification, data collecting card is sent to after the local discharge signal received is carried out into analog/digital conversion
Main frame is analyzed, analysis main frame carries out discharge characteristic amount extraction, pattern-recognition and data by embedded software to local discharge signal
Library management, provides insulating tube type busbar insulation defect type and insulation degradation degree.
2. insulating tube type busbar partial discharge monitoring system according to claim 1, it is characterised in that：The analysis main frame
It is connected with touch-screen display, the operation for analyzing main frame is completed by touch-screen display interaction.
3. insulating tube type busbar partial discharge monitoring system according to claim 1, it is characterised in that：The ultrasonic wave is passed
The center operating frequency of sensor is 40kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710255133.7A CN107121623A (en) | 2017-04-19 | 2017-04-19 | A kind of insulating tube type busbar partial discharge monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710255133.7A CN107121623A (en) | 2017-04-19 | 2017-04-19 | A kind of insulating tube type busbar partial discharge monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107121623A true CN107121623A (en) | 2017-09-01 |
Family
ID=59726480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710255133.7A Pending CN107121623A (en) | 2017-04-19 | 2017-04-19 | A kind of insulating tube type busbar partial discharge monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107121623A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3798650A4 (en) * | 2019-07-22 | 2022-03-30 | State Grid Hubei Electric Power Research Institute | Insulation diagnosis and positioning method for insulated tube-type bus bar |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198904A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Insulation tube type bus partial discharge detecting device |
| CN204855722U (en) * | 2015-07-27 | 2015-12-09 | 国网天津市电力公司 | Insulating tubular busbar partial discharge detector system of 10kV |
-
2017
- 2017-04-19 CN CN201710255133.7A patent/CN107121623A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198904A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Insulation tube type bus partial discharge detecting device |
| CN204855722U (en) * | 2015-07-27 | 2015-12-09 | 国网天津市电力公司 | Insulating tubular busbar partial discharge detector system of 10kV |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3798650A4 (en) * | 2019-07-22 | 2022-03-30 | State Grid Hubei Electric Power Research Institute | Insulation diagnosis and positioning method for insulated tube-type bus bar |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170901 |
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| RJ01 | Rejection of invention patent application after publication |