CN206450785U - The sensor of monitoring switch cabinet local discharging level - Google Patents
The sensor of monitoring switch cabinet local discharging level Download PDFInfo
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- CN206450785U CN206450785U CN201621299348.6U CN201621299348U CN206450785U CN 206450785 U CN206450785 U CN 206450785U CN 201621299348 U CN201621299348 U CN 201621299348U CN 206450785 U CN206450785 U CN 206450785U
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- dielectric layer
- earth voltage
- switch cabinet
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- 238000007599 discharging Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 50
- 230000001052 transient Effects 0.000 claims abstract description 32
- 238000009413 insulation Methods 0.000 claims abstract description 13
- 238000005266 casting Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a kind of sensor of monitoring switch cabinet local discharging level, including bottom plate and the dielectric layer of the insulation connected as one with the bottom plate for being connected with the switch cubicle；The sensor also includes the superfrequency detection module and transient earth voltage detection module for being used to detect discharge level, and the superfrequency detection module is fixed in the dielectric layer with transient earth voltage detection module, electrically connected respectively by lead-out wire with the external world.Sensor of the present utility model has superfrequency detection and transient earth voltage detection function simultaneously, and due to being fixedly mounted on switch cubicle, compared with hand-held mode, stability is good, and accuracy of data acquisition is high, and performance safety is reliable.Sensor is fixedly mounted on switch cubicle, and monitoring result is transmitted to extraneous monitoring instrument by lead-out wire, is reduced manpower and is avoided the Personal Risk of tester.
Description
Technical field
The utility model is related to partial discharge of switchgear monitoring technical field, and in particular to a kind of monitoring switch cabinet is locally put
The sensor of electric level.
Background technology
Shelf depreciation can be produced when there is insulation defect inside switchgear, can be effective by the detection to shelf depreciation
Ground judges the state of insulation of switchgear.
Inside current switchgear in the detection method of local discharge signal, superfrequency method combination transient earth voltage method is mesh
It is preceding to realize the practical feasible method of switchgear partial discharge monitoring.Superfrequency method is by detecting that electric discharge is produced
Ultrahigh-frequency signal judges an innings discharge level, has the advantages that to be disturbed small by between adjacent cabinet；Transient earth voltage method has extraneous dry
The characteristics of signal is few is disturbed, thus detecting system is influenceed small by external interference, can greatly improve local discharge of electrical equipment inspection
Survey, the reliability particularly monitored on-line and sensitivity.This two methods refers to horse and leapt etc. write《Transient earth voltage method and spy
Application of the high-frequency method in partial discharge detection》, carry《Ningxia electric》, 4 phases in 2016, the 34-36 pages.
In the prior art, scene carries out inspection using superfrequency method and transient earth voltage method, and common mode of operation is：One
To multidigit staff's hand-held sensor, positions different on switchgear body are placed on, testing staff needs to hold sensing
Device is pressed close on the shell of measurement equipment to be checked.It is another to have staff's observation detecting instrument such as oscillograph, spectrum analyzer or just
Take detection device.The problem of prior art is present has, because sensor is by manually using hand grip, easy trembling because of human hand
Move and influence is produced on testing result, so as to influence the validity and accuracy of detection.In addition, under this detection mode, inspection
The body of survey personnel is possible to directly contact equipment in itself, there is certain potential safety hazard；Sensor and detector during detection
Relatively far apart, it is necessary to which multiple operating personnel collaborative work, adds maintenance workload between device.
Utility model content
One of the technical problems to be solved in the utility model is to provide the spy in a kind of longtime running with security reliability
High frequency and the two-in-one sensor of transient earth voltage, it is ensured that accuracy in detection and repeatability.
Another technical problem that the utility model is solved is to provide a kind of safe sensor, it is to avoid con-ventional handheld is passed
The safety risks that sensor is present.Effective guarantee is provided for equipment and personal safety.
In order to solve the above technical problems, the utility model is adopted the following technical scheme that：
A kind of sensor of monitoring switch cabinet local discharging level, it is characterised in that including for connecting with the switch cubicle
The bottom plate and the dielectric layer of the insulation connected as one with the bottom plate connect；The sensor also includes being used to detect discharge level
Superfrequency detection module and transient earth voltage detection module, the superfrequency detection module consolidates with transient earth voltage detection module
It is scheduled in the dielectric layer, is electrically connected respectively by lead-out wire with the external world.
Optimal technical scheme of the present utility model is that the air type of described superfrequency detection module is popped one's head in from dielectric layer
Stretch out, against the cable bin of the switch cubicle.
Optimal technical scheme of the present utility model is that the transient earth voltage detection module is attached on the bottom plate, is used for
Detect transient earth voltage signal.
Optimal technical scheme of the present utility model is, in described superfrequency detection module and transient earth voltage detection module
Around pour the mode of insulant and form the dielectric layer.
Optimal technical scheme of the present utility model is that the lead-out wire includes connection and power line, is given an account of respectively
Matter layer is fixed.
Sensor of the present utility model has following beneficial effect：
Sensor of the present utility model has superfrequency detection and transient earth voltage detection function simultaneously, due to being fixedly mounted
On switch cubicle, compared with hand-held mode, stability is good, and accuracy of data acquisition is high, and performance safety is reliable.It is of the present utility model
Sensor is fixedly mounted on switch cubicle, and monitoring signals are transmitted to extraneous monitoring instrument by lead-out wire, is reduced manpower and is avoided
The Personal Risk of tester.
In addition, the sensor of one of embodiment, takes megohmite insulant to carry out integral insulation covering casting, improves sensing
The integral insulation level and sealing property of device.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described.
The dimensional structure diagram of the sensor for the monitoring switch cabinet local discharging level that Fig. 1 provides for the present embodiment.
Fig. 2 is the structured flowchart of the sensor shown in Fig. 1.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
Embodiment 1
As shown in figure 1, a kind of sensor for monitoring switch cabinet local discharging level that the present embodiment is provided, its feature exists
In, including bottom plate 5 and the dielectric layer 3 of the insulation connected as one with the bottom plate 5 for being connected with the switch cubicle；It is described
Sensor also includes the superfrequency detection module 1 and transient earth voltage detection module 2, the superfrequency for being used to detect discharge level
Detection module 1 is fixed in the dielectric layer 3 with transient earth voltage detection module 2, is electrically connected respectively by lead-out wire 4 with the external world
Connect.Utility model to sensor by the screw on bottom plate 5, be fixedly mounted on switch cubicle, sensor is reliably fixed
Inside switch cubicle cable bin, monitoring result is transmitted to extraneous monitoring instrument by lead-out wire 4, is reduced manpower and is avoided test
The Personal Risk of personnel.Sensor of the present utility model has superfrequency detection and transient earth voltage detection function simultaneously, due to
It is fixedly mounted on switch cubicle, compared with hand-held mode, stability is good, accuracy of data acquisition is high, performance safety is reliable.This reality
With new to sensor, take megohmite insulant, carry out integral insulation covering casting, improve the integral insulation level of sensor with
Sealing property.
It is preferred that, as shown in figure 1, the air type probe 11 of described superfrequency detection module 1 is from dielectric layer 12
It is middle to stretch out, against the cable bin of the switch cubicle, to measure the ultrahigh-frequency signal in switch cubicle.
As shown in figure 1, the transient earth voltage detection module 1 is attached on the bottom plate 5, for detecting that transient earth voltage is believed
Number, the purpose that transient earth voltage detection module 1 is attached on the bottom plate 5 is, because bottom plate 5 is connected with switch cubicle, to be easy to transient state
Ground voltage detection module 1 measures the transient earth voltage signal produced during shelf depreciation.
It is preferred that, poured around described superfrequency detection module 1 and transient earth voltage detection module 2 absolutely
The mode of edge thing forms the dielectric layer 3, and support is provided for inner member.The lead-out wire 4 includes connection and power line, point
Do not fixed by the dielectric layer 3.The sensor of the present embodiment integrally carries out insulation covering casting, improves the integral insulation of sensor
Level and sealing property, it is ensured that the personal safety of tester.
The assembling process of the sensor for the monitoring switch cabinet local discharging level that the present embodiment is provided is as follows：It is with bottom plate 5
Base, plays the supporting role of globality, can by superfrequency detection module 1, transient earth voltage detection module 2 and lead-out wire 4 etc.
The mode such as fix beforehand through screw and fix placement orientation.Then formed and bottom using the covering casting of megohmite insulant integral insulation
The dielectric layer 3 that plate 5 is connected as one, this dielectric layer 3 is three-dimensional structure.Measurement signal is exported from lead-out wire in test, is adopted
Collect extra-high video sensor and transient earth voltage sensor detection switchgear in shelf depreciation produce ultrahigh-frequency signal and temporarily
State ground voltage signal.
It is pointed out that superfrequency detection module 1 and transient earth voltage detection module 2 take with it is of the prior art
Measurement module, here is omitted.Specifically refer to following document：Document one：Sun Shuguang etc. writes《GIS based on UHF methods is local
Discharge measuring and analysis》, carry《Electrical measurement and instrument》4th phase in 2012；Document two：Xu Yan writes《Partial discharge of switchgear transient state pair
Ground voltage detection technique》, carry《For electricity consumption》2nd phase in 2011.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (5)
1. a kind of sensor of monitoring switch cabinet local discharging level, it is characterised in that including for being connected with the switch cubicle
Bottom plate and the insulation connected as one with the bottom plate dielectric layer；
The sensor also includes the superfrequency detection module and transient earth voltage detection module for being used to detect discharge level, described
Superfrequency detection module is fixed in the dielectric layer with transient earth voltage detection module, is electrically connected respectively by lead-out wire with the external world
Connect.
2. the sensor of monitoring switch cabinet local discharging level as claimed in claim 1, it is characterised in that described superfrequency
The air type of detection module is popped one's head in be stretched out from dielectric layer, against the cable bin of the switch cubicle.
3. the sensor of monitoring switch cabinet local discharging level as claimed in claim 1 or 2, it is characterised in that the transient state
Ground voltage detection module is attached on the bottom plate, for detecting transient earth voltage signal.
4. the sensor of monitoring switch cabinet local discharging level as claimed in claim 3, it is characterised in that described extra-high
The mode that insulant is poured around frequency detection module and transient earth voltage detection module forms the dielectric layer.
5. the sensor of monitoring switch cabinet local discharging level as claimed in claim 3, it is characterised in that the lead-out wire bag
Connection and power line are included, is fixed respectively by the dielectric layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621299348.6U CN206450785U (en) | 2016-11-29 | 2016-11-29 | The sensor of monitoring switch cabinet local discharging level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621299348.6U CN206450785U (en) | 2016-11-29 | 2016-11-29 | The sensor of monitoring switch cabinet local discharging level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206450785U true CN206450785U (en) | 2017-08-29 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621299348.6U Active CN206450785U (en) | 2016-11-29 | 2016-11-29 | The sensor of monitoring switch cabinet local discharging level |
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| CN (1) | CN206450785U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108427064A (en) * | 2018-02-07 | 2018-08-21 | 国网陕西省电力公司西安供电公司 | A kind of auxiliary detection device of high-tension switch cabinet local discharge signal |
-
2016
- 2016-11-29 CN CN201621299348.6U patent/CN206450785U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108427064A (en) * | 2018-02-07 | 2018-08-21 | 国网陕西省电力公司西安供电公司 | A kind of auxiliary detection device of high-tension switch cabinet local discharge signal |
| CN108427064B (en) * | 2018-02-07 | 2020-05-05 | 国网陕西省电力公司西安供电公司 | Auxiliary detection device for partial discharge signal of high-voltage switch cabinet |
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