CN204269764U - Ultrahigh-frequency signal amplification demodulator device and partial discharge monitoring equipment - Google Patents
Ultrahigh-frequency signal amplification demodulator device and partial discharge monitoring equipment Download PDFInfo
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- CN204269764U CN204269764U CN201420686009.8U CN201420686009U CN204269764U CN 204269764 U CN204269764 U CN 204269764U CN 201420686009 U CN201420686009 U CN 201420686009U CN 204269764 U CN204269764 U CN 204269764U
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- frequency signal
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- inductance
- operational amplifier
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Abstract
The utility model relates to a kind of ultrahigh-frequency signal amplification demodulator device and partial discharge monitoring equipment, and this ultrahigh-frequency signal amplification demodulator device comprises: signal input, output terminal; This input end is connected by the in-phase end of electric capacity C1 and operational amplifier, inductance L 2 one end, the end of oppisite phase ground connection of operational amplifier; Power supply is connected with the other end of inductance L 2, the feeder ear of operational amplifier by resistance Rb, and this feeder ear is successively by electric capacity C4, resistance R1 ground connection; The output terminal of operational amplifier is connected with one end of inductance L 1, resistance R2 by resistance R4, and the other end of this inductance L 1 is connected with power supply, and the other end of resistance R2 is connected to signal output part by electric capacity C2; Ultrahigh-frequency signal amplification demodulator device of the present utility model, it improves the ability of partial discharge monitoring equipment Received signal strength by filtering, envelope detection, is conducive to backstage real-time reception useful signal, to reach the object reducing and omit and judge by accident.
Description
Technical field
The utility model relates to a kind of ultrahigh-frequency signal amplification demodulator device and partial discharge monitoring equipment.
Background technology
Build intelligent grid, a wherein crucial step is the on-line monitoring that requirement realizes power equipment, particularly the on-line monitoring of outdoor power equipment is particularly important, electric discharge phenomena are produced during power equipment generation local ageing, thus generation high-frequency pulse signal, along with the change of transmission range, high-frequency pulse signal can be decayed gradually, monitoring equipment is difficult to catch sometimes, external noise is more had to produce interference to monitoring equipment, make on-line monitoring equipment be difficult to receive useful signal, make running background slowly be difficult in real time; Therefore, how can effectively receive, so that signal judges just to seem particularly important.
Utility model content
The purpose of this utility model is to provide a kind of ultrahigh-frequency signal amplification demodulator device, and it improves the ability of partial discharge monitoring equipment Received signal strength by filtering, envelope detection, is conducive to backstage real-time reception and differentiates useful signal, reduces and omits and erroneous judgement.
In order to solve the problems of the technologies described above, the utility model provides a kind of ultrahigh-frequency signal amplification demodulator device, comprising: signal input, output terminal, power supply; Described signal input part is connected with the in-phase end of operational amplifier, one end of inductance L 2 by electric capacity C1, the end of oppisite phase ground connection of this operational amplifier; Described power supply is connected with the described other end of inductance L 2, the feeder ear of operational amplifier by resistance Rb, and this feeder ear is also successively by electric capacity C4, resistance R1 ground connection; And the output terminal of described operational amplifier is connected with one end of inductance L 1, resistance R2 by resistance R4, the other end of this inductance L 1 is connected with described power supply, and the other end of described resistance R2 is connected to described signal output part by electric capacity C2.
Preferably, in order to reduce the humorous wave interference of power supply, described power supply is also connected with a filter capacitor C3.
Another aspect, the utility model additionally provides a kind of partial discharge monitoring equipment, to improve the ability of its Received signal strength, is conducive to backstage real-time reception and differentiates useful signal, reduce and omit and erroneous judgement.
In order to solve the problems of the technologies described above, the utility model additionally provides a kind of partial discharge monitoring equipment, comprise: described ultrahigh-frequency signal amplification demodulator device, be suitable for the filter unit accessing ultrahigh-frequency signal, the ultrahigh-frequency signal pre-amplification circuit be connected with this filter unit, this ultrahigh-frequency signal pre-amplification circuit by described ultrahigh-frequency signal amplification demodulator device with put the signal input part of monitoring IED one innings and be connected.
Preferably, in order to solve the phase locked technical matters of Partial discharge signal further, described office puts monitoring IED and comprises: for gathering the signal gathering unit of multichannel data simultaneously, the phase-locking unit be connected with processor module in this signal gathering unit.
The beneficial effects of the utility model are, ultrahigh-frequency signal amplification demodulator device of the present utility model, it improves the ability of partial discharge monitoring equipment Received signal strength by filtering, envelope detection, is conducive to backstage real-time reception useful signal, to reach the object reducing and omit and judge by accident.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 shows the circuit theory diagrams of ultrahigh-frequency signal amplification demodulator device;
Fig. 2 shows the theory diagram of partial discharge monitoring equipment.
In figure: resistance R1, Rb, R2, R4, inductance L 1, L2, operational amplifier U1, electric capacity C1, C2, C4, filter capacitor C3, signal input part RF IN, signal output part RF OUT.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
Embodiment 1
Fig. 1 shows the circuit theory diagrams of ultrahigh-frequency signal amplification demodulator device.
As shown in Figure 1, a kind of ultrahigh-frequency signal amplification demodulator device of the present utility model, comprising: signal input, output terminal, power supply; Described signal input part is connected with the in-phase end of operational amplifier U1, one end of inductance L 2 by electric capacity C1, the end of oppisite phase ground connection of this operational amplifier U1; Described power supply is connected with the other end of described inductance L 2, the feeder ear of operational amplifier U1 by resistance Rb, and this feeder ear is also successively by electric capacity C4, resistance R1 ground connection; And the output terminal of described operational amplifier U1 is connected with one end of inductance L 1, resistance R2 by resistance R4, the other end of this inductance L 1 is connected with described power supply, and the other end of described resistance R2 is connected to described signal output part by electric capacity C2.
Preferably, described power supply is also connected with a filter capacitor C3.
This ultrahigh-frequency signal amplification demodulator device is suitable for the high-frequency pulse signal that detection goes out 2ns, and signal frequency is at 300MHz ~ 1.5GHz.
Embodiment 2
Fig. 2 shows the theory diagram of partial discharge monitoring equipment.
As shown in Figure 2, a kind of partial discharge monitoring equipment, comprise: ultrahigh-frequency signal amplification demodulator device as described in Example 1, be suitable for the filter unit accessing ultrahigh-frequency signal, the ultrahigh-frequency signal pre-amplification circuit be connected with this filter unit, this ultrahigh-frequency signal pre-amplification circuit by described ultrahigh-frequency signal amplification demodulator device with put the signal input part of monitoring IED one innings and be connected.
Preferably, described office put monitoring IED comprise: for gathering the signal gathering unit of multichannel data simultaneously, the phase-locking unit be connected with processor module in this signal gathering unit, to solve the phase locked technical matters of Partial discharge signal.Wherein, described phase-locking unit adopts the technical scheme of the phase locking circuit disclosed in patent documentation CN101547006B.
Optionally, described processor module can adopt single-chip microcomputer or embedded chip to realize.
Optionally, described processor module is also connected with a RS485 communication module, realizes local exchange and puts monitoring IED and upper machine communication.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on instructions, must determine its technical scope according to right.
Claims (4)
1. a ultrahigh-frequency signal amplification demodulator device, is characterized in that, comprising: signal input, output terminal, power supply;
Described signal input part is connected with the in-phase end of operational amplifier, one end of inductance L 2 by electric capacity C1, the end of oppisite phase ground connection of this operational amplifier;
Described power supply is connected with the described other end of inductance L 2, the feeder ear of operational amplifier by resistance Rb, and this feeder ear is also successively by electric capacity C4, resistance R1 ground connection; And
The output terminal of described operational amplifier is connected with one end of inductance L 1, resistance R2 by resistance R4, and the other end of this inductance L 1 is connected with described power supply, and the other end of described resistance R2 is connected to described signal output part by electric capacity C2.
2. ultrahigh-frequency signal amplification demodulator device according to claim 1, is characterized in that, described power supply is also connected with a filter capacitor C3.
3. a partial discharge monitoring equipment, it is characterized in that, comprise: ultrahigh-frequency signal amplification demodulator device as claimed in claim 1, be suitable for the filter unit accessing ultrahigh-frequency signal, the ultrahigh-frequency signal pre-amplification circuit be connected with this filter unit, this ultrahigh-frequency signal pre-amplification circuit by described ultrahigh-frequency signal amplification demodulator device with put the signal input part of monitoring IED one innings and be connected.
4. partial discharge monitoring equipment according to claim 3, is characterized in that, described office puts monitoring IED and comprises: for gathering the signal gathering unit of multichannel data simultaneously, the phase-locking unit be connected with processor module in this signal gathering unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420686009.8U CN204269764U (en) | 2014-11-14 | 2014-11-14 | Ultrahigh-frequency signal amplification demodulator device and partial discharge monitoring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420686009.8U CN204269764U (en) | 2014-11-14 | 2014-11-14 | Ultrahigh-frequency signal amplification demodulator device and partial discharge monitoring equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204269764U true CN204269764U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420686009.8U Expired - Fee Related CN204269764U (en) | 2014-11-14 | 2014-11-14 | Ultrahigh-frequency signal amplification demodulator device and partial discharge monitoring equipment |
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| CN (1) | CN204269764U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557858A (en) * | 2020-12-09 | 2021-03-26 | 南京蓝园精瑞电气有限公司 | Partial discharge ultrahigh frequency signal acquisition system for ring main unit |
-
2014
- 2014-11-14 CN CN201420686009.8U patent/CN204269764U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557858A (en) * | 2020-12-09 | 2021-03-26 | 南京蓝园精瑞电气有限公司 | Partial discharge ultrahigh frequency signal acquisition system for ring main unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20171114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |