CN207215955U - A kind of Partial discharge detector - Google Patents
A kind of Partial discharge detector Download PDFInfo
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- CN207215955U CN207215955U CN201721172056.0U CN201721172056U CN207215955U CN 207215955 U CN207215955 U CN 207215955U CN 201721172056 U CN201721172056 U CN 201721172056U CN 207215955 U CN207215955 U CN 207215955U
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Abstract
A kind of Partial discharge detector, including ultrasonic sensor, wire, measurement module and nipple are the utility model is related to, ultrasonic sensor is connected through wire with measurement module, and measurement module is connected with nipple, measuring circuit built in measurement module.The discharge detector of the utility model design, by setting ultrasonic sensor and measuring circuit, shelf depreciation can accurately be measured, it is simple to operate, power equipment safety operation is further effectively ensured, the personal safety of prevention apparatus maintenance personal simultaneously, greatly improve the operating efficiency of user.
Description
Technical field
It the utility model is related to circuitry field, more particularly to a kind of Partial discharge detector.
Background technology
Under hyperbaric environment, apparatus insulated material can deteriorate under electric field action for intelligent grid long-term work, there is energy damage
Lose, can also puncture under forceful electric power field action, insulation of the grid power transmission apparatus local discharge to equipment causes destruction, has a strong impact on
The normal operation of equipment.The insulation fault of grid power transmission equipment is occurred suddenly after the long period is latent mostly, once
Occur, gently then cause a large amount of electric power aerial drainages, influence even damage switch cubicle, be also possible to trigger blast when situation is serious, near
Personnel and power equipment cause heavy losses, therefore we need a kind of monitoring device that can be real-time and online to set electric power
It is standby to be monitored.
Utility model content
The purpose of this utility model is to provide a kind of Partial discharge detector, to solve above-mentioned technical problem, to realize
Above-mentioned purpose the utility model uses following technical scheme：
A kind of Partial discharge detector, including ultrasonic sensor, wire, measurement module and nipple, ultrasonic wave pass
Sensor is connected through wire with measurement module, and measurement module is connected with nipple, measuring circuit built in measurement module.
On the basis of above-mentioned technical proposal, signal input part meets operational amplifier U1A through resistance R1 in the measuring circuit
Positive input terminal, while resistance R1 is grounded through electric capacity C2, and operational amplifier U1A negative input end is grounded through resistance R13, same to luck
The negative input end for calculating amplifier U1A connects operational amplifier U1A output end, operational amplifier U1A output end warp through resistance R12
Resistance R3 connecting resistance R15, resistance R15 connects operational amplifier U1B positive input terminal, while resistance R15 is grounded through electric capacity C3, computing
Amplifier U1B negative input termination operational amplifier U1B output end, while operational amplifier U1A output end is through electric capacity C2
Operational amplifier U1B output end is connect, operational amplifier U1B output end meets electric capacity C5 through electric capacity C4, and electric capacity C4 is through resistance R4
Operational amplifier U2A output end is connect, electric capacity C5 connects operational amplifier U2A positive input terminal, while electric capacity C5 connects through resistance R5
Ground, operational amplifier U2A negative input end is grounded through resistance R7, while operational amplifier U2A negative input end connects through resistance R6
Operational amplifier U2A output end, operational amplifier U2A output end meets electric capacity C7 through electric capacity C6, while electric capacity C6 is through resistance
R8 connects operational amplifier U2B output end, and electric capacity C7 connects operational amplifier U2B positive input terminal, while electric capacity C7 is through resistance R9
Ground connection, operational amplifier U2B negative input end is grounded through resistance R10, while operational amplifier U2B negative input end is through resistance
R11 connects operational amplifier U2B output end, and operational amplifier U2B output end is meeting operational amplifier U3A just through resistance R15
Input, while resistance R15 is grounded through resistance R16 and resistance R14 respectively, resistance R16 meets operational amplifier U3A through diode D1
Output end, operational amplifier U3A negative input end is grounded through resistance R12, while operational amplifier U3A negative input end is through resistance
R13 connects operational amplifier U3A output end, and operational amplifier U3A output end connects power supply, while operation amplifier through diode D2
Device U3A output termination circuit output end.
On the basis of above-mentioned technical proposal, described operational amplifier U1A-U1B, U2A-U2B, U3A are high using AD827 types
Performance operational amplifier.
On the basis of above-mentioned technical proposal, the ultrasonic sensor uses SR150N model ultrasonic sensors.
The discharge detector of the utility model design, can be accurate by setting ultrasonic sensor and measuring circuit
Shelf depreciation is measured, it is simple to operate, power equipment safety operation, while prevention apparatus maintenance personal is further effectively ensured
Personal safety, greatly improve the operating efficiency of user.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is measuring circuit figure.
In figure：1- ultrasonic sensors；2- wires；3- measurement modules；4- nipples.
Embodiment
The utility model is further elaborated with specific embodiment below in conjunction with the accompanying drawings.
A kind of Partial discharge detector, including ultrasonic sensor 1, wire 2, measurement module 3 and nipple 4, ultrasound
Wave sensor 1 is connected through wire 2 with measurement module 3, and measurement module 3 is connected with nipple 4, the built-in measurement electricity of measurement module 3
Road.
Signal input part meets operational amplifier U1A positive input terminal, while resistance R1 through resistance R1 in the measuring circuit
It is grounded through electric capacity C2, operational amplifier U1A negative input end is grounded through resistance R13, while operational amplifier U1A negative input end
Operational amplifier U1A output end is connect through resistance R12, operational amplifier U1A output end is through resistance R3 connecting resistance R15, resistance
R15 connects operational amplifier U1B positive input terminal, while resistance R15 is grounded through electric capacity C3, operational amplifier U1B negative input end
Operational amplifier U1B output end is connect, while operational amplifier U1A output end connects the defeated of operational amplifier U1B through electric capacity C2
Go out end, operational amplifier U1B output end meets electric capacity C5 through electric capacity C4, and electric capacity C4 connects the defeated of operational amplifier U2A through resistance R4
Go out end, electric capacity C5 connects operational amplifier U2A positive input terminal, while electric capacity C5 is grounded through resistance R5, and operational amplifier U2A's is negative
Input is grounded through resistance R7, while operational amplifier U2A negative input end connects operational amplifier U2A output through resistance R6
End, operational amplifier U2A output end meets electric capacity C7 through electric capacity C6, while electric capacity C6 connects operational amplifier U2B's through resistance R8
Output end, electric capacity C7 connects operational amplifier U2B positive input terminal, while electric capacity C7 is grounded through resistance R9, operational amplifier U2B's
Negative input end is grounded through resistance R10, while operational amplifier U2B negative input end connects the defeated of operational amplifier U2B through resistance R11
Go out end, operational amplifier U2B output end connects operational amplifier U3A positive input terminal through resistance R15, while resistance R15 distinguishes
It is grounded through resistance R16 and resistance R14, resistance R16 connects operational amplifier U3A output ends through diode D1, operational amplifier U3A's
Negative input end is grounded through resistance R12, while operational amplifier U3A negative input end connects the defeated of operational amplifier U3A through resistance R13
Go out end, operational amplifier U3A output end connects power supply through diode D2, while operational amplifier U3A output termination circuit is defeated
Go out end.
Described operational amplifier U1A-U1B, U2A-U2B, U3A use AD827 type high performance operational amplifiers, described super
Sonic sensor uses SR150N model ultrasonic sensors.
Discharge signal detects through sensor in a kind of Partial discharge detector, is delivered to after measuring circuit is handled in dsp chip
Processing, wherein measuring circuit includes filter circuit, amplifying circuit and A/D change-over circuits.Ultrasonic sensor receives ultrasonic wave and put
After electric signal, micro voltage signal is converted into, then amplified circuit amplification, filter circuit filtering process, then turn through A/D
Circuit conversion is changed as that can be handled by being sent into after the signal of dsp chip processing in DSP.Filter circuit is formed centered on U1A,
Amplifying circuit centered on U1B, U2A and U2B, the A/D change-over circuits centered on U3A, and the output end of filter circuit with
The input connection of amplifying circuit, the output end of amplifying circuit are connected with the input of A/D change-over circuits.
Described above is the utility model preferred embodiment, for the ordinary skill in the art, according to this reality
With new teaching, in the case where not departing from principle of the present utility model and spirit, the change that is carried out to embodiment, repair
Change, replace and modification is still fallen within the scope of protection of the utility model.
Claims (3)
- A kind of 1. Partial discharge detector, it is characterised in that including ultrasonic sensor, wire, measurement module and nipple, Ultrasonic sensor is connected through wire with measurement module, and measurement module is connected with nipple, measuring circuit built in measurement module；Signal input part connects operational amplifier U1A positive input terminal through resistance R1 in the measuring circuit, while resistance R1 is through electricity Hold C2 ground connection, operational amplifier U1A negative input end is grounded through resistance R13, while operational amplifier U1A negative input end is through electricity Resistance R12 connects operational amplifier U1A output end, and operational amplifier U1A output end connects through resistance R3 connecting resistance R15, resistance R15 Operational amplifier U1B positive input terminal, while resistance R15 is grounded through electric capacity C3, operational amplifier U1B negative input termination computing Amplifier U1B output end, while operational amplifier U1A output end connects operational amplifier U1B output end through electric capacity C2, fortune The output end for calculating amplifier U1B meets electric capacity C5 through electric capacity C4, and electric capacity C4 connects operational amplifier U2A output end through resistance R4, electricity Hold the positive input terminal that C5 meets operational amplifier U2A, while electric capacity C5 is grounded through resistance R5, operational amplifier U2A negative input end It is grounded through resistance R7, while operational amplifier U2A negative input end connects operational amplifier U2A output end, computing through resistance R6 Amplifier U2A output end meets electric capacity C7 through electric capacity C6, while electric capacity C6 connects operational amplifier U2B output end through resistance R8, Electric capacity C7 connects operational amplifier U2B positive input terminal, while electric capacity C7 is grounded through resistance R9, operational amplifier U2B negative input End is grounded through resistance R10, while operational amplifier U2B negative input end connects operational amplifier U2B output end through resistance R11, Operational amplifier U2B output end connects operational amplifier U3A positive input terminal through resistance R15, while resistance R15 is respectively through resistance R16 and resistance R14 ground connection, resistance R16 connect operational amplifier U3A output ends, operational amplifier U3A negative input through diode D1 End is grounded through resistance R12, while operational amplifier U3A negative input end connects operational amplifier U3A output end through resistance R13, Operational amplifier U3A output end connects power supply, while operational amplifier U3A output termination circuit output end through diode D2.
- A kind of 2. Partial discharge detector according to claim 1, it is characterised in that the operational amplifier U1A-U1B, U2A-U2B, U3A use AD827 type high performance operational amplifiers.
- 3. a kind of Partial discharge detector according to claim 1, it is characterised in that the ultrasonic sensor uses SR150N model ultrasonic sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721172056.0U CN207215955U (en) | 2017-09-13 | 2017-09-13 | A kind of Partial discharge detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721172056.0U CN207215955U (en) | 2017-09-13 | 2017-09-13 | A kind of Partial discharge detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207215955U true CN207215955U (en) | 2018-04-10 |
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ID=61824757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721172056.0U Active CN207215955U (en) | 2017-09-13 | 2017-09-13 | A kind of Partial discharge detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207215955U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031070A (en) * | 2018-08-17 | 2018-12-18 | 国网江苏省电力有限公司盐城供电分公司 | A kind of partial discharge of switchgear on-line monitoring system and its monitoring method based on W5500 ethernet communication |
-
2017
- 2017-09-13 CN CN201721172056.0U patent/CN207215955U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031070A (en) * | 2018-08-17 | 2018-12-18 | 国网江苏省电力有限公司盐城供电分公司 | A kind of partial discharge of switchgear on-line monitoring system and its monitoring method based on W5500 ethernet communication |
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