CN209606565U - GIS partial discharge fault locator - Google Patents
GIS partial discharge fault locator Download PDFInfo
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- CN209606565U CN209606565U CN201822166791.1U CN201822166791U CN209606565U CN 209606565 U CN209606565 U CN 209606565U CN 201822166791 U CN201822166791 U CN 201822166791U CN 209606565 U CN209606565 U CN 209606565U
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Abstract
The utility model relates to GIS partial discharge fault locators comprising type local-discharge ultrasonic wave signal identification unit；Type local-discharge ultrasonic wave signal identification unit includes the port I for connecting ultrasonic signal, the input isolator U1 that input terminal 3 is electrically connected with port I, for connecting the port II of electric signal, the input isolator U2 that input terminal 3 is electrically connected with port II, input terminal 2 is electrically connected with the output terminal 6 of input isolator U1 and gates the door switch U4A that terminal 1 is electrically connected with the output terminal 6 of input isolator U2, input terminal 3 is electrically connected with door switch U4A input terminal 3, and input terminal is electrically connected with the output terminal 6 of door switch U4A and the port III for connecting data acquisition unit.It is the utility model is designed reasonably, compact-sized and easy to use.
Description
Technical field
The utility model relates to insulation of electrical installation detection technique field, the specifically a kind of scene realization GIS pressure resistance examination
Test GIS partial discharge fault locator.
Background technique
The advantages that GIS is easy for installation since its occupied area is small, small by external interference is widely used in high voltage power transmission and transforming
In system.But once GIS breaks down, influence face is big and consequence is serious.The general insulation fault that occurs all is accompanied by office
Portion's electric discharge occurs, thus Partial Discharge Detection is one of the effective ways of diagnosing electric power insulation status.
For running GIS device, ultrasound examination and superfrequency (UHF) detection are the important inspections of GIS partial discharge
Survey means.But present GIS partial discharge detection device generally can only individually detect ultrasound or ultrahigh-frequency signal, Bu Neng electricity
Sound integration test, and measure that gimmick is single, and field connection is cumbersome, operator's distance GIS is excessively close, once GIS moment punctures,
There are certain security risks by operator.At the scene in partial discharge detection GIS, interference signal is more various, and general instrument can not area
Divide Processing of Partial Discharge Ultrasonic Signals and interference ultrasonic signal, it is easy to cause to judge by accident, influence GIS fault location result.
Utility model content
Technical problem to be solved in the utility model is generally speaking to provide a kind of GIS partial discharge fault location dress
It sets；The utility model can solve the above prior art problem, and can improve the working efficiency of site operation personnel, accurate to eliminate
Ultrasonic wave interference signal accurately identifies GIS partial discharge fault type, determines discharge position, and make to discharge severity
The technical issues of correctly assessment, in detail solution and acquirement beneficial effect in aftermentioned content and combine in specific embodiment
Content specifically describes.
To solve the above problems, technical solution adopted in the utility model is:
A kind of GIS partial discharge fault locator, including type local-discharge ultrasonic wave signal identification unit；Type local-discharge ultrasonic wave signal
Recognition unit includes for connecting the port I of ultrasonic signal, the input isolator U1 that input terminal 3 is electrically connected with port I, using
In connection electric signal port II, input terminal 3 be electrically connected with port II input isolator U2, input terminal 2 with input every
From device U1 output terminal 6 electrical connection and gate terminal 1 be electrically connected with the output terminal 6 of input isolator U2 door switch U4A,
Input terminal 3 is electrically connected with door switch U4A input terminal 3 and input terminal is electrically connected with the output terminal 6 of door switch U4A and
For connecting the port III of data acquisition unit.
As a further improvement of the above technical scheme:
Resistance R1 is connected between port I and the input terminal 3 of input isolator U1.
Resistance R5 is connected between port II and the input terminal 3 of input isolator U2.
Electric signal is UHF ultrahigh-frequency signal.
Connect between the input terminal 2 and output terminal 6 of input isolator U1/ input isolator U2/ input isolator U3
It is connected to resistance R2/ resistance R6/ resistance R4.
The control statement of door switch U4A is IF statement.
Door switch U4A be and door.
Resistance R3 is connected between the output terminal 3 of door switch U4A and the input terminal 3 of input isolator U3.
Ultrasonic signal signal includes ultrasonic wave interference signal and/or type local-discharge ultrasonic wave signal.
The model AD6031 of input isolator U1/ input isolator U2/ input isolator U3.
Ultrasonic signal is easy to be interfered by external sound, if there is artificial percussion interference can shadow in Partial Discharge Detection
Normal shelf depreciation ultrasonic measurement is rung, the utility model is using UHF signal as the switch for receiving shelf depreciation ultrasonic signal, if connecing
UHF signal, ultrasonic channel switch closure are received, data acquisition unit can just receive ultrasonic signal, and this method guarantees in GIS
The ultrasonic signal of external disturbance will not be received by the system when failure, and local ultrasound signal can be received by the system inside only GIS,
So as to accurately determine GIS position of failure point by the method.
The beneficial effects of the utility model description without being limited thereto, in order to preferably be easy to understand, in specific embodiment portion
Divide and has carried out more detailed description.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Fig. 2 is the principles of the present invention figure.
Fig. 3 is the wiring diagram of the utility model.
Specific embodiment
As shown in Figure 1-3, the GIS partial discharge fault locator of the present embodiment, including type local-discharge ultrasonic wave signal identification
Unit；Type local-discharge ultrasonic wave signal identification unit includes being electrically connected for connecting the port I of ultrasonic signal, input terminal 3 and port I
The input isolator that the input isolator U1 connect, the port II for connecting electric signal, input terminal 3 are electrically connected with port II
U2, input terminal 2 are electrically connected with the output terminal 6 of input isolator U1 and gate the output end of terminal 1 Yu input isolator U2
Door switch U4A, the input terminals 3 of 6 electrical connection of son are electrically connected with door switch U4A input terminal 3 and input terminal and door switch
The output terminal 6 of U4A is electrically connected and the port III for connecting data acquisition unit.
Resistance R1 is connected between port I and the input terminal 3 of input isolator U1.
Resistance R5 is connected between port II and the input terminal 3 of input isolator U2.
Electric signal is UHF ultrahigh-frequency signal.
Connect between the input terminal 2 and output terminal 6 of input isolator U1/ input isolator U2/ input isolator U3
It is connected to resistance R2/ resistance R6/ resistance R4.
The control statement of door switch U4A is IF statement.
Door switch U4A be and door.
Resistance R3 is connected between the output terminal 3 of door switch U4A and the input terminal 3 of input isolator U3.
Ultrasonic signal signal includes ultrasonic wave interference signal and/or type local-discharge ultrasonic wave signal.
The model AD6031 of input isolator U1/ input isolator U2/ input isolator U3.
The utility model passes through system acquisition to electric signal, and by electric signal as reception shelf depreciation ultrasonic signal
Switch, if receiving electric signal, ultrasonic channel switch closure, system can just receive ultrasonic signal.
Electric signal is UHF (superfrequency) sensor signal.
Ultrasonic signal switch is by controlling with door electronic device, which is no more than 1ns.
As shown in Figure 1, described GIS failure the utility model monitors the electric signal and ultrasonic signal of GIS simultaneously, wherein ultrasound
Signal includes interference signal and shelf depreciation ultrasonic signal, this circuit is using electric signal as door switch, if not receiving electric signal,
Door switch disconnects, and ultrasonic signal can not pass through, once receiving electric signal inside GIS, door switch closure makes ultrasonic signal (office
Discharge ultrasonic signal in portion) effectively pass through, and the amplification that opens a window.
According to Fig. 3 wiring schematic diagram, ultrasonic sensor and the extra-high video sensor of UHF are coupled with shelf depreciation ultrasound
Wave signal identification unit port I and port II, once Processing of Partial Discharge Ultrasonic Signals recognition unit receives UHF superfrequency letter
Number, real Processing of Partial Discharge Ultrasonic Signals can be transferred to data acquisition by output port by internal switch closure, ultrasonic signal
Unit, if not having UHF signal, internal switch is in an off state, and I received ultrasonic signal in port is considered that human interference is believed
Number, data acquisition unit can not receive ultrasonic wave interference signal.This method ensure that data collecting module collected to be real
Processing of Partial Discharge Ultrasonic Signals, avoid influence of the external interference to measurement accuracy.So as to which discharge fault is accurately positioned
Point and the electric discharge type for judging fault point.
At GIS partial discharge scene when pressure-resistant commissioning test, the monitoring of shelf depreciation ultrasonic signal can effectively find GIS
Internal discharge and once failure failure can accurately find fault point, but since site environment is more complicated, ultrasound letter
It number is easy to receive extraneous interference, so that detection device is carried out erroneous judgement, to cannot correctly judge the insulation situation inside GIS.
The utility model uses one kind and gates the interference method that disappears for GIS measurement electric signal, this can efficiently differentiate ultrasonic signal
From GIS internal discharge, or interference, the accuracy of ultrasonic fault location detection is effectively improved in this way.
The utility model is designed reasonably, low in cost, durable, safe and reliable, easy to operate, time saving and energy saving, saving
It is fund, compact-sized and easy to use.
It is to disclose in order to more clear, and the prior art is just no longer enumerated that the utility model, which fully describes,.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It can still modify to technical solution documented by previous embodiment, or be equal to part of technical characteristic
Replacement；It is obvious for being combined as multiple technical solutions of the those skilled in the art to the utility model.And these
It modifies or replaces, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (10)
1. a kind of GIS partial discharge fault locator, it is characterised in that: including type local-discharge ultrasonic wave signal identification unit；Partial discharge
Ultrasonic signal recognition unit includes the input for connecting the port I of ultrasonic signal, input terminal 3 is electrically connected with port I
Input isolator U2, the input terminal that isolator U1, the port II for connecting electric signal, input terminal 3 are electrically connected with port II
Son 2 is electrically connected with the output terminal 6 of input isolator U1 and gates terminal 1 to be electrically connected with the output terminal 6 of input isolator U2
Door switch U4A, input terminal 3 is electrically connected with door switch U4A input terminal 3 and the output end of input terminal and door switch U4A
6 electrical connection of son and the port III for connecting data acquisition unit.
2. GIS partial discharge fault locator according to claim 1, it is characterised in that: in port, I is isolated with input
Resistance R1 is connected between the input terminal 3 of device U1.
3. GIS partial discharge fault locator according to claim 1, it is characterised in that: in port II and input every
Resistance R5 is connected between input terminal 3 from device U2.
4. GIS partial discharge fault locator according to claim 1, it is characterised in that: electric signal is UHF superfrequency
Signal.
5. GIS partial discharge fault locator according to claim 1, it is characterised in that: defeated in input isolator U1/
Enter to be connected with resistance R2/ resistance R6/ resistance R4 between the input terminal 2 and output terminal 6 of isolator U2/ input isolator U3.
6. GIS partial discharge fault locator according to claim 1, it is characterised in that: the control language of door switch U4A
Sentence is IF statement.
7. GIS partial discharge fault locator according to claim 1, it is characterised in that: door switch U4A be and door.
8. GIS partial discharge fault locator according to claim 1, it is characterised in that: in the output of door switch U4A
Resistance R3 is connected between terminal 3 and the input terminal 3 of input isolator U3.
9. GIS partial discharge fault locator according to claim 1, it is characterised in that: ultrasonic signal signal packet
Include ultrasonic wave interference signal and/or type local-discharge ultrasonic wave signal.
10. GIS partial discharge fault locator according to claim 1, it is characterised in that: input isolator U1/ is defeated
Enter the model AD6031 of isolator U2/ input isolator U3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822166791.1U CN209606565U (en) | 2018-12-21 | 2018-12-21 | GIS partial discharge fault locator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822166791.1U CN209606565U (en) | 2018-12-21 | 2018-12-21 | GIS partial discharge fault locator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209606565U true CN209606565U (en) | 2019-11-08 |
Family
ID=68396796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822166791.1U Active CN209606565U (en) | 2018-12-21 | 2018-12-21 | GIS partial discharge fault locator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209606565U (en) |
-
2018
- 2018-12-21 CN CN201822166791.1U patent/CN209606565U/en active Active
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