CN208399633U - High-voltage cable GIS terminal Partial Discharge Detection and diagnostic system - Google Patents
High-voltage cable GIS terminal Partial Discharge Detection and diagnostic system Download PDFInfo
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- CN208399633U CN208399633U CN201820970208.XU CN201820970208U CN208399633U CN 208399633 U CN208399633 U CN 208399633U CN 201820970208 U CN201820970208 U CN 201820970208U CN 208399633 U CN208399633 U CN 208399633U
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Abstract
The utility model discloses a kind of high-voltage cable GIS terminal Partial Discharge Detection and diagnostic systems, including ultrasonic sensor, extra-high video sensor, high-frequency electrical pulses flow sensor, data acquisition unit, data storage server and analyzing and diagnosing platform, ultrasonic sensor and extra-high video sensor are mounted on GIS cable termination tail pipe, high-frequency electrical pulses flow sensor is mounted on the ground line of GIS cable termination, ultrasonic sensor, extra-high video sensor and high-frequency electrical pulses flow sensor are connected with data acquisition unit respectively, data acquisition unit is connected with data storage server, data storage server is connected with analyzing and diagnosing platform.Long-term partial discharge monitoring is carried out to GIS cable termination by using three kinds of different detection methods, can effectively solve the problems, such as that scene interference is big, promote the accuracy of local discharge signal analyzing and diagnosing.
Description
Technical field
The utility model relates to power equipment Partial Discharge Detecting Technology field more particularly to a kind of high-tension cable GIS are whole
Hold Partial Discharge Detection and diagnostic system.
Background technique
Shelf depreciation is the main performance shape of GIS, switchgear, cable and some other high voltage electric equipment insulation defect
Formula, and shelf depreciation further develops, and is the main reason for causing Electric Power Equipment Insulation to fail.Statistical data shows close
85% power equipment accident is caused by shelf depreciation.Partial Discharge Detection is that quantitative analysis insulation degradation process has efficacious prescriptions
Method, therefore Partial Discharge Detection is carried out for GIS cable termination and is of great significance.
Since high-tension cable local discharge signal is faint, at the scene under the influence of noise and outside electromagnetic interference, high-voltage electricity
Cable scene Partial Discharge Detection and analyzing and diagnosing difficulty are larger.At present for the shelf depreciation of 110kV and the above GIS cable termination
Detection method mainly has ultrasonic wave, superfrequency and high-frequency pulse current method according to the discharge signal frequency difference detected.It is single
One detection method effectively can not comprehensively find the local discharge signal inside GIS cable termination, and local discharge signal
Analyzing and diagnosing is high to the on-the-spot test skill requirement of testing staff, even if finding signal at the scene sometimes, also can not accurately sentence
The severity of disconnected shelf depreciation.
Utility model content
In view of the defects existing in the prior art, the utility model provides a kind of high-voltage cable GIS terminal Partial Discharge Detection
And diagnostic system, it can be realized to the comprehensive monitoring of GIS cable termination shelf depreciation and to the place remote of local discharge signal
Measurement and remote diagnosis.
In order to achieve the above objectives, the utility model adopts the following technical solution:
A kind of high-voltage cable GIS terminal Partial Discharge Detection and diagnostic system, including ultrasonic sensor, superfrequency sensing
Device, high-frequency electrical pulses flow sensor, data acquisition unit, data storage server and analyzing and diagnosing platform, the ultrasonic wave pass
Sensor and extra-high video sensor are mounted on GIS cable termination tail pipe, and the high-frequency electrical pulses flow sensor is mounted on GIS cable
On the ground line of terminal, the ultrasonic sensor, extra-high video sensor and high-frequency electrical pulses flow sensor respectively with the number
It is connected according to acquisition unit, the data acquisition unit is connected with the data storage server, the data storage service
Device is connected with the analyzing and diagnosing platform.
Further, there are three channels for the data acquisition unit；The ultrasonic sensor, extra-high video sensor and height
Frequency pulses of current sensor passes through cable connection to a channel of the data acquisition unit, the ultrasonic sensor respectively
It is provided with the first signal amplifier between data acquisition unit, is arranged between the extra-high video sensor and data acquisition unit
There is second signal amplifier, wideband gain amplification is provided between the high-frequency electrical pulses flow sensor and data acquisition unit
Device.
Further, the cable is BNC coaxial cable.
Further, the sensing elements of the ultrasonic sensor use piezo-electric crystal.
Compared with prior art, the utility model has the beneficial effects that
1, the utility model can monitor for a long time GIS cable termination progress shelf depreciation on-line, can monitor electric discharge letter
Number stability, signal development trend efficiently solves live interference problem, improves cable termination built-in electrical insulation defect
Recall rate；
2, joint-detection is carried out using three kinds of distinct methods, is compared and analyzed by the testing result to distinct methods,
The accuracy of local discharge signal analyzing and diagnosing is improved, realizes complete detection；
3, by the way that Partial Discharge Detection data to be transferred to the analyzing and diagnosing platform on backstage, by on-site test personnel and part
Electric discharge diagnostic personnel is separated, and is realized place remote measurement, the remote diagnosis of local discharge signal, is compensated for on-the-spot test
Personnel because be lacking in experience can not Accurate Diagnosis local discharge signal deficiency.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described.
Fig. 1 is the implementation diagram of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig.1, one preferred embodiment of the utility model provides a kind of high-voltage cable GIS terminal Partial Discharge Detection
And diagnostic system, comprising: ultrasonic sensor 4, extra-high video sensor 5, high-frequency electrical pulses flow sensor 6, the amplification of the first signal
Device 7, second signal amplifier 8, wideband gain amplifier 9, data acquisition unit 10, data storage server 11, analyzing and diagnosing
Platform 12.
Ultrasonic sensor 4 is mounted on GIS cable termination tail pipe 1, for detecting the letter of the ultrasonic wave in GIS cable termination
Number, and by ultrasound signal transmission to data acquisition unit 10；The sensing elements of ultrasonic sensor 4 use piezo-electric crystal, and
And piezo-electric crystal leading portion uses arc shape identical with GIS cable termination tail pipe, is conducive to preferably connect by cambered surface design
Receive the discharge signal of GIS cable termination.Extra-high video sensor 5 is mounted on GIS cable termination tail pipe 1, for detecting GIS cable
Ultrahigh-frequency signal in terminal, and ultrahigh-frequency signal is transferred to data acquisition unit 10.High-frequency electrical pulses flow sensor 6 is installed
On GIS cable termination ground line 3, for detecting the high-frequency pulse current signal in GIS cable termination, and by high-frequency electrical pulses
Stream signal is transferred to data acquisition unit 10, and ground line 3 is connect with the ground terminal 2 on GIS terminal tail pipe 1.
There are three channels for data acquisition unit 10.Ultrasonic sensor 4 is connected to data by a BNC coaxial cable and adopts
A channel for collecting unit 10, is provided with the first signal amplifier 7 between ultrasonic sensor 4 and data acquisition unit 10.The
The ultrasonic signal amplification that one signal amplifier 7 is used to will test, is more clear ultrasonic signal, improves testing result
Accuracy.Extra-high video sensor 5 is connected to a channel of data acquisition unit 10, superfrequency by a BNC coaxial cable
Second signal amplifier 8 is provided between sensor 5 and data acquisition unit 10.Second signal amplifier 8 is for will test
Ultrahigh-frequency signal amplification, be more clear ultrahigh-frequency signal, improve the accuracy of testing result.High-frequency electrical pulses flow sensor
6 are connected to a channel of data acquisition unit 10, wideband gain amplifier 9 and data acquisition by a BNC coaxial cable
Wideband gain amplifier 9 is provided between unit 10.Wideband gain amplifier 9 makes height for amplifying high-frequency pulse current signal
Frequency pulsed current signal is more clear, and improves the accuracy of testing result.
Data acquisition unit 10 is connected to data storage server 11 by 485 communication buses, by collected ultrasonic wave
The local discharge signals such as signal, ultrahigh-frequency signal and high-frequency pulse current signal are sent to data storage server 11；Data are deposited
Storage server 11 is placed in transformer station's master control room, and the local discharge signal for will test be locally stored standby
Part.
Data storage server 11 is connected to analyzing and diagnosing platform 12 by optical fiber；Analyzing and diagnosing platform 12 is placed in backstage
Monitoring center, the local discharge signal that storage server uploads for receiving data.Background monitoring personnel, which note abnormalities, locally puts
Electric signal can carry out Conjoint Analysis diagnosis, accurate judgement shelf depreciation to abnormal signal with the veteran expert of joint test
The severity of signal proposes that corresponding O&M strategy and disposition are suggested.
The utility model can carry out shelf depreciation to GIS cable termination and monitor on-line for a long time, can monitor discharge signal
Stability, signal development trend efficiently solves live interference problem, improves the inspection of cable termination built-in electrical insulation defect
Extracting rate；Joint-detection is carried out using three kinds of distinct methods, is compared and analyzed, is improved by the testing result to distinct methods
The accuracy of local discharge signal analyzing and diagnosing realizes complete detection；By the way that Partial Discharge Detection data are transferred to backstage
On-site test personnel are separated with shelf depreciation diagnostic personnel, realize the different of local discharge signal by analyzing and diagnosing platform
Ground remotely measures, remote diagnosis, compensate for on-the-spot test personnel because be lacking in experience can not Accurate Diagnosis local discharge signal not
Foot.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, the change that can be readily occurred in
Change or replace, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with described
Subject to scope of protection of the claims.
Claims (4)
1. high-voltage cable GIS terminal Partial Discharge Detection and diagnostic system, it is characterised in that: including ultrasonic sensor, extra-high
Video sensor, high-frequency electrical pulses flow sensor, data acquisition unit, data storage server and analyzing and diagnosing platform are described super
Sonic sensor and extra-high video sensor are mounted on GIS cable termination tail pipe, and the high-frequency electrical pulses flow sensor is mounted on
On the ground line of GIS cable termination, the ultrasonic sensor, extra-high video sensor and high-frequency electrical pulses flow sensor respectively with
The data acquisition unit is connected, and the data acquisition unit is connected with the data storage server, and the data are deposited
Storage server is connected with the analyzing and diagnosing platform.
2. high-voltage cable GIS terminal Partial Discharge Detection according to claim 1 and diagnostic system, it is characterised in that: institute
Stating data acquisition unit, there are three channels；The ultrasonic sensor, extra-high video sensor and high-frequency electrical pulses flow sensor point
Not Tong Guo cable connection to a channel of the data acquisition unit, between the ultrasonic sensor and data acquisition unit
It is provided with the first signal amplifier, is provided with second signal amplifier between the extra-high video sensor and data acquisition unit,
Wideband gain amplifier is provided between the high-frequency electrical pulses flow sensor and data acquisition unit.
3. high-voltage cable GIS terminal Partial Discharge Detection according to claim 2 and diagnostic system, it is characterised in that: institute
Stating cable is BNC coaxial cable.
4. high-voltage cable GIS terminal Partial Discharge Detection according to claim 1 and diagnostic system, it is characterised in that: institute
The sensing elements of ultrasonic sensor are stated using piezo-electric crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820970208.XU CN208399633U (en) | 2018-06-22 | 2018-06-22 | High-voltage cable GIS terminal Partial Discharge Detection and diagnostic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820970208.XU CN208399633U (en) | 2018-06-22 | 2018-06-22 | High-voltage cable GIS terminal Partial Discharge Detection and diagnostic system |
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| Publication Number | Publication Date |
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| CN208399633U true CN208399633U (en) | 2019-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820970208.XU Active CN208399633U (en) | 2018-06-22 | 2018-06-22 | High-voltage cable GIS terminal Partial Discharge Detection and diagnostic system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646154A (en) * | 2018-06-22 | 2018-10-12 | 广西电网有限责任公司电力科学研究院 | A kind of GIS cable terminations Partial Discharge Detection and analysis and diagnosis system |
| CN112578244A (en) * | 2020-12-08 | 2021-03-30 | 广西电网有限责任公司电力科学研究院 | Method for evaluating internal defect discharge of GIS (gas insulated switchgear) by utilizing ultraviolet light |
| CN113608083A (en) * | 2021-08-06 | 2021-11-05 | 国网山西省电力公司太原供电公司 | PD pulse current, ultrahigh frequency and ultrasonic synchronous monitoring system and method for transformer alternating current withstand voltage test |
-
2018
- 2018-06-22 CN CN201820970208.XU patent/CN208399633U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646154A (en) * | 2018-06-22 | 2018-10-12 | 广西电网有限责任公司电力科学研究院 | A kind of GIS cable terminations Partial Discharge Detection and analysis and diagnosis system |
| CN112578244A (en) * | 2020-12-08 | 2021-03-30 | 广西电网有限责任公司电力科学研究院 | Method for evaluating internal defect discharge of GIS (gas insulated switchgear) by utilizing ultraviolet light |
| CN113608083A (en) * | 2021-08-06 | 2021-11-05 | 国网山西省电力公司太原供电公司 | PD pulse current, ultrahigh frequency and ultrasonic synchronous monitoring system and method for transformer alternating current withstand voltage test |
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