CN204479686U - A kind of power detector - Google Patents
A kind of power detector Download PDFInfo
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- CN204479686U CN204479686U CN201520217550.9U CN201520217550U CN204479686U CN 204479686 U CN204479686 U CN 204479686U CN 201520217550 U CN201520217550 U CN 201520217550U CN 204479686 U CN204479686 U CN 204479686U
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- power detector
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Abstract
The utility model discloses a kind of power detector, comprise testing circuit, amplifying circuit and output circuit, testing circuit comprises coupling capacitance and detects impedance, amplifying circuit comprises wave filter, digital to analog converter and VCO oscillator, output circuit comprises LED display lamp and oscillograph, its median filter comprises a high impedance amplifier and some inductance, electric capacity, oscillograph is connected with amplifier electric, described LED display lamp is electrically connected with NE555 with 9013, testing circuit, amplifying circuit and output circuit are by 5V DC power supply, fuse is designed with between high impedance amplifier and digital to analog converter, protection circuit safety.Detecting device reliable in quality of the present utility model, circuit is simple, makes, uses all convenient, can be used for partial discharge test.
Description
Technical field
The utility model relates to the detection technique field of electric supply, particularly a kind of power detector.
Background technology
Along with getting prosperous with every passing day of economy, the fast development of scientific and technological level, the advance to perfect order of industrialzation and urbanization process, the raising day by day of living standards of the people, phase-splitting power load distributing not science in the current power distribution network method of operation, pressure drop is large, the problems such as line loss is high, poor stability also highlight gradually.Unbalance causing is there is in two in its reason in economic development and power-saving technology evolution.Power distribution network electricity consumption line loss power saving, causes serious impact to Environment of Economic Development and energy resource supply.Its monitoring and optimal control become focus and the focus of whole society's concern.Observing and controlling at present to power distribution network three-phase power load, also only rests on the demand aspect meeting electricity consumer, does not reach the safety of guarantee power distribution network, the three-phase equilibrium of economical operation, the level of optimal control.The ultimate principle of raising power distribution network on-road efficiency monitoring combination platform is the parameter monitoring sampling thief by each user's three-phase power load supplied for power distribution network, extract the Power system load data of power distribution network, teletransmission is to the terminal control case at transformer place, expert system according to presetting carries out analytical calculation, then the optimizing control models that in the sectional type phase-change switch preset according to three-phase distribution net and equipment, single-chip microcomputer is preset and monitoring and historical data, calculate the optimal allocation model of power load in each administered power consumer.Line load is implemented to the optimal control reducing line loss.Existing monitoring sampling thief is due to the problem of its structure and design, keep away the interference for factor together with other of unavoidable radio, the Power system load data of detection is inaccurate, and result display is clear not, result of use is unsatisfactory, the demand be difficult to satisfied actual power distribution network power load monitoring, controlling.
Utility model content
For solving the problem, the utility model proposes a kind of power detector.
A kind of power detector, comprise testing circuit, amplifying circuit and output circuit, described testing circuit comprises coupling capacitance, detects impedance, described amplifying circuit comprises wave filter, digital to analog converter and VCO oscillator, described output circuit comprises LED display lamp and oscillograph, and its median filter comprises a high impedance amplifier and some inductance, electric capacity, and described oscillograph is connected with amplifier electric.
Further, described LED display lamp is electrically connected with NE555 with 9013.
Further, described testing circuit, amplifying circuit and output circuit are by 5V DC power supply.
Further, fuse is designed with between described high impedance amplifier and digital to analog converter.
The utility model compared with prior art, it has following beneficial effect: power detector of the present utility model, testing circuit, amplifying circuit and output circuit are by 5V DC power supply, fuse is designed with between high impedance amplifier and digital to analog converter, protection circuit safety while use safety, detecting device of the present utility model receives change in voltage, the pulse voltage sampling that pulse current in loop produces it by detecting impedance after coupling capacitance, then amplify through high-impedance amplifier, clear and intuitive waveform is shown again on oscillograph, then rectification is passed through, the direct current signal obtained is again through 9013 anti-phase amplifications, finally enter the control that the voltage controlled oscillator that is made up of NE555 and 9015 realizes light emitting diode with this, show power state intuitively further, it adopts pulse current method to detect shelf depreciation, utilize the comparatively low frequency part in local discharge signal frequency spectrum, radio interference can be avoided, quality, reliable results, circuit is simple, make, it is all convenient to use, can be used for partial discharge test.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is circuit diagram of the present utility model.
Embodiment
Consult the power detector shown in Fig. 1 and Fig. 2, comprise testing circuit, amplifying circuit and output circuit, described testing circuit comprises coupling capacitance, detects impedance, described amplifying circuit comprises wave filter, digital to analog converter and VCO oscillator, described output circuit comprises LED display lamp and oscillograph, and its median filter comprises a high impedance amplifier and some inductance, electric capacity, and described oscillograph is connected with amplifier electric.
Described LED display lamp is electrically connected with NE555 with 9013.
Described testing circuit, amplifying circuit and output circuit are by 5V DC power supply.
Fuse is designed with between described high impedance amplifier and digital to analog converter.
The utility model compared with prior art, it has following beneficial effect: power detector of the present utility model, testing circuit, amplifying circuit and output circuit are by 5V DC power supply, fuse is designed with between high impedance amplifier and digital to analog converter, protection circuit safety while use safety, detecting device of the present utility model receives change in voltage, the pulse voltage sampling that pulse current in loop produces it by detecting impedance after coupling capacitance, then amplify through high-impedance amplifier, clear and intuitive waveform is shown again on oscillograph, then rectification is passed through, the direct current signal obtained is again through 9013 anti-phase amplifications, finally enter the control that the voltage controlled oscillator that is made up of NE555 and 9015 realizes light emitting diode with this, show power state intuitively further, it adopts pulse current method to detect shelf depreciation, utilize the comparatively low frequency part in local discharge signal frequency spectrum, radio interference can be avoided, quality, reliable results, circuit is simple, make, it is all convenient to use, can be used for partial discharge test.
Embodiment recited above is only be described preferred implementation of the present utility model, not limits design of the present utility model and scope.Under the prerequisite not departing from the utility model design concept; the various modification that this area ordinary person makes the technical solution of the utility model and improvement; protection domain of the present utility model all should be dropped into; the technology contents of the utility model request protection, all records in detail in the claims.
Claims (4)
1. a power detector, it is characterized in that: comprise testing circuit, amplifying circuit and output circuit, described testing circuit comprises coupling capacitance, detects impedance, described amplifying circuit comprises wave filter, digital to analog converter and VCO oscillator, described output circuit comprises LED display lamp and oscillograph, and its median filter comprises a high impedance amplifier and some inductance, electric capacity, and described oscillograph is connected with amplifier electric.
2. power detector according to claim 1, is characterized in that: described LED display lamp is electrically connected with NE555 with 9013.
3. power detector according to claim 1, is characterized in that: described testing circuit, amplifying circuit and output circuit are by 5V DC power supply.
4. power detector according to claim 1, is characterized in that: be designed with fuse between described high impedance amplifier and digital to analog converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520217550.9U CN204479686U (en) | 2015-04-13 | 2015-04-13 | A kind of power detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520217550.9U CN204479686U (en) | 2015-04-13 | 2015-04-13 | A kind of power detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204479686U true CN204479686U (en) | 2015-07-15 |
Family
ID=53635473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520217550.9U Expired - Fee Related CN204479686U (en) | 2015-04-13 | 2015-04-13 | A kind of power detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204479686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880063A (en) * | 2020-07-28 | 2020-11-03 | 国家电网有限公司 | Active amplifier power supply circuit for partial discharge detection |
-
2015
- 2015-04-13 CN CN201520217550.9U patent/CN204479686U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880063A (en) * | 2020-07-28 | 2020-11-03 | 国家电网有限公司 | Active amplifier power supply circuit for partial discharge detection |
| CN111880063B (en) * | 2020-07-28 | 2022-12-13 | 国家电网有限公司 | Active amplifier power supply circuit for partial discharge detection |
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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: 20150715 Termination date: 20160413 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |