CN105548828A - Energy-saving partial discharge signal acquisition device - Google Patents
Energy-saving partial discharge signal acquisition device Download PDFInfo
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- CN105548828A CN105548828A CN201510885805.3A CN201510885805A CN105548828A CN 105548828 A CN105548828 A CN 105548828A CN 201510885805 A CN201510885805 A CN 201510885805A CN 105548828 A CN105548828 A CN 105548828A
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- controller
- interface
- discharge signal
- input end
- partial discharge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Testing Relating To Insulation (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention provides an energy-saving partial discharge signal acquisition device. According to the energy-saving partial discharge signal acquisition device, a first ultrahigh frequency partial discharge sensor interface, a first filtering amplification circuit and a first acquisition circuit are sequentially connected in an end-to-end mode and output to an input end of the controller, a second ultrahigh frequency partial discharge sensor interface, a second filtering amplification circuit and a second acquisition circuit are sequentially connected in an end-to-end mode and output to the input end of the controller, a noise sensor interface respectively outputs to input ends of the first and second filtering amplification circuits through a signal distribution module, a supersonic wave partial discharge sensor interface, a third filtering amplification circuit and a third acquisition circuit are sequentially connected in the end-to-end mode and output to the input end of the controller, a power frequency signal input interface, a power frequency period triggering circuit and the input end of end of the controller are sequentially connected in the end-to-end mode, the input end of the controller is connected with a human body inductor to detect whether human beings approach or not, the detection result is outputted, the output end of the controller is connected with an LCD to display the acquired result, on and off of the LCD are controlled by the controller according to the detection result, and thereby power consumption is reduced.
Description
Technical field
The present invention relates to signal processing technology field, particularly relate to a kind of energy-conservation local discharge signal harvester.
Background technology
The data collector of the local discharge signal of electric system high-tension apparatus, the signal that various kinds of sensors can be collected is sent to the function of background server for further data processing by analog to digital conversion.The data collector of current local discharge signal realizes mainly through homemade or existing data collecting card.
But, when the partial discharge phenomenon of the equipment such as GIS, transformer in pressure power transmission and distribution transformer station occurs, ultrahigh-frequency signal and ultrasonic signal can be produced; Current data collector is in the detection to multiple high-tension apparatus or when carrying out localization of fault, need the number of sensor gathered to increase, there is interference each other, no matter and the Partial discharge signal detected whether someone operates, all the time show display screen, cause the problem of wastes power.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of energy-conservation local discharge signal harvester, for solving in prior art because number of probes is more, mutual interference, and detect Partial discharge signal no matter whether someone operates, all the time show display screen, cause the problem of wastes power.
For achieving the above object and other relevant objects, the invention provides a kind of energy-conservation local discharge signal harvester, comprising:
Controller, first, sensor interface is put in two superfrequency offices, first, two, three filter amplification circuit, sensor noise interface, ultrasonic partial discharge sensor interface, power frequency component input interface, power frequency period trigger circuit, first, two, three Acquisition Circuit, sensor interface is put in described first superfrequency office, described first filter amplification circuit is connected successively with described first Acquisition Circuit head and the tail and exports the input end of described controller to, sensor interface is put in described second superfrequency office, described second filter amplification circuit is connected successively with described second Acquisition Circuit head and the tail and exports the input end of described controller to, described sensor noise interface exports the input end of first and second filter amplification circuit respectively by signal distribution module, described ultrasonic partial discharge sensor interface, the 3rd filter amplification circuit are connected successively with the 3rd Acquisition Circuit head and the tail and export the input end of described controller to, the output terminal of described power frequency component input interface connects the input end of described power frequency period trigger circuit, the output terminal of described power frequency period trigger circuit connects the input end of described controller, the input end of described controller is connected with human inductor, whether have people near sending corresponding testing result to controller to detect, the output terminal of described controller is connected with LCD to show the result gathering Partial discharge signal, described controller controls the start and stop of described LCD according to testing result.
Preferably, the input end of described controller is connected with input keyboard to realize man-machine interaction.
Preferably, described human inductor is infrared sensor.
Preferably, the output terminal of described controller is connected with for detecting when Partial discharge signal exceedes parameter preset and the alarm relay responded.
Preferably, described alarm relay is pilot lamp or hummer.
Preferably, the output terminal of described controller is provided with RJI45 interface and optical fiber interface.
Preferably, first, second Acquisition Circuit described is High Speed Data Acquisition Circuit, and described 3rd Acquisition Circuit is medium speed data Acquisition Circuit.
As mentioned above, energy-conservation local discharge signal harvester of the present invention, has following beneficial effect:
By being provided with different filtering circuits at multiple sensor, to the environmental interference signal gathered in transformer station and noise signal, the electromagnetic wave received by sensor noise contrasts the undesired signal eliminated superfrequency sensor and receive, thus can obtain from Partial discharge signal real in monitored device; Noise transducer signal carries out the harmless distribution of power by signal distribution circuit, be assigned to each innings to put filter amplification circuit corresponding to sensor signal and carry out the filter and amplification the same with Partial discharge signal, realize filtering to the undesired signal of below 300MHZ, and play a game with putting and amplify with noise signal.Acquisition Circuit realizes changing the data of high frequency analog signals, and the result obtained is transferred to controller by parallel interface.Controller realizes the data analysis contrast of putting sensor path signal and noise transducer passage of playing a game, thus filters out noise signal, carries out analysis judge Partial discharge signal signal.Whether the Partial discharge signal of collection being existed people around according to detection, when people having been detected, then lighting LCD to show the Partial discharge signal gathered; When nobody, then turn off LCD and simple the Partial discharge signal of collection is sent to background server.Whether controller exceeds parameter preset according to the Partial discharge signal gathered and controls the start and stop of alarm relay, reaches the object notifying operating personnel.
Accompanying drawing explanation
Fig. 1 is shown as energy-conservation local discharge signal harvester structural representation of the present invention.
Element numbers illustrates:
1 controller
Sensor interface is put in 21 first superfrequency offices
Sensor interface is put in 22 second superfrequency offices
31 first filter amplification circuit
32 second filter amplification circuit
33 the 3rd filter amplification circuit
41 first Acquisition Circuit
42 second Acquisition Circuit
43 the 3rd Acquisition Circuit
5 sensor noise interfaces
6 signal distribution modules
7 ultrasonic partial discharge sensor interfaces
8 power frequency component input interfaces
9 power frequency period trigger circuit
10 input keyboards
11 human inductors
12LCD
13 alarm relaies
14 ethernet physical layer protocol circuit
15RJ45 interface
16 optical fiber interfaces
Embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this instructions can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this instructions also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.It should be noted that, when not conflicting, the feature in following examples and embodiment can combine mutually.
It should be noted that, the diagram provided in following examples only illustrates basic conception of the present invention in a schematic way, then only the assembly relevant with the present invention is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
Refer to Fig. 1, energy-conservation local discharge signal harvester structural representation of the present invention, comprising:
Controller 1, first, sensor interface is put in two superfrequency offices, first, two, three filter amplification circuit, sensor noise interface 5, ultrasonic partial discharge sensor 7 interface, power frequency component input interface 8, power frequency period trigger circuit 9, first, two, three Acquisition Circuit, sensor interface 21 is put in described first superfrequency office, described first filter amplification circuit 31 is connected successively with described first Acquisition Circuit 41 head and the tail and exports the input end of described controller 1 to, sensor interface 22 is put in described second superfrequency office, described second filter amplification circuit 32 is connected successively with described second Acquisition Circuit 42 head and the tail and exports the input end of described controller 1 to, described sensor noise interface 5 exports the input end of first and second filter amplification circuit respectively by signal distribution module 6, described ultrasonic partial discharge sensor 7 interface, the 3rd filter amplification circuit 33 are connected successively with the 3rd Acquisition Circuit 43 head and the tail and export the input end of described controller 1 to, the output terminal of described power frequency component input interface 8 connects the input end of described power frequency period trigger circuit 9, the output terminal of described power frequency period trigger circuit 9 connects the input end of described controller 1, the input end of described controller 1 is connected with human inductor 11, whether have people near sending corresponding testing result to controller 1 to detect, the output terminal of described controller 1 is connected with LCD12 to show the result gathering Partial discharge signal, described controller 1 controls the start and stop of described LCD12 according to testing result.
Wherein, first, second Acquisition Circuit 42 described is High Speed Data Acquisition Circuit, and described 3rd Acquisition Circuit 43 is medium speed data Acquisition Circuit.
In the present embodiment, described ultrasonic sensor channel interface receive ultrasonic signal by filter amplification circuit realize filtering and noise reduction process and amplify after, realized the digital conversion of simulating signal by medium speed data Acquisition Circuit.And pass to primary controller and carry out further data processing.By the analysis to ultrasonic signal, carry out the location that origination point is put in judgement drawn game that office puts.
Particularly, the input end of described controller 1 is connected with input keyboard 10 to realize man-machine interaction.
Particularly, whether the input end of described controller 1 is connected with human inductor 11 has people close to detect, and realizes the perception to mobile human body, for the waking up of LCD12 function of implement device.When human body approaching device, LCD12 is lit to facilitate keeper to check data.After human body is away from a period of time, LCD12 meeting auto sleep, to ensure the serviceable life of LCD12.
Particularly, when controller 1 receive human inductor 11 testing result for have people near time, light LCD12 and gather the result of Partial discharge signal to show.
In the present embodiment, man-machine payment part is made up of keyboard and color LCD 12.Keyboard realizes the switching of menu and the input of configuration parameter, and LCD12 Presentation Function mainly realizes the display of local monitoring configuration and local discharge signal waveform and the analysis data display of electric discharge result.Red warning message can be shown when office puts more serious.
Particularly, described alarm relay 13 is pilot lamp or hummer, when alarm relay 13 output circuit reaches the parameter of setting for putting the order of severity in office, exports the switching value of passive dry contact to light alarm lamp or hummer.
Particularly, the output terminal of described controller 1 is provided with RJ45 interface and optical fiber interface 16 interface, and telecommunication part is realized by ethernet physical layer protocol circuit 14, and communication interface has two kinds, common isolation RJ45 interface 15 and optical fiber interface 16 communication interface.When there being strict demand, optical fiber interface 16 interface can realize the electrical isolation of transformer station's Partial discharge signal collector and background server.
Controller 1 realizes the configuration of whole collector, communication and data processing as the center gathered.This controller 1 realizes for FPGA, with the data acquisition and processing (DAP) demand of satisfied high speed, is met the storage demand of mass data by SDRAM.
In sum, the present invention is by being provided with different filtering circuits at multiple sensor, to the environmental interference signal gathered in transformer station and noise signal, the electromagnetic wave received by sensor noise contrasts the undesired signal eliminated superfrequency sensor and receive, thus can obtain from Partial discharge signal real in monitored device; Noise transducer signal carries out the harmless distribution of power by signal distribution circuit, be assigned to each innings to put filter amplification circuit corresponding to sensor signal and carry out the filter and amplification the same with Partial discharge signal, realize filtering to the undesired signal of below 300MHZ, and play a game with putting and amplify with noise signal.Acquisition Circuit realizes changing the data of high frequency analog signals, and the result obtained is transferred to controller 1 by parallel interface.Controller 1 realizes the data analysis contrast of putting sensor path signal and noise transducer passage of playing a game, thus filters out noise signal, carries out analysis judge Partial discharge signal signal.Whether the Partial discharge signal of collection being existed people around according to detection, when people having been detected, then lighting LCD12 to show the Partial discharge signal gathered; When nobody, then turn off LCD12 and simple the Partial discharge signal of collection is sent to background server.Whether controller 1 exceeds parameter preset according to the Partial discharge signal gathered and controls the start and stop of alarm relay 13, reaches the object notifying operating personnel.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (7)
1. an energy-conservation local discharge signal harvester, is characterized in that, described device comprises:
Controller, first, sensor interface is put in two superfrequency offices, first, two, three filter amplification circuit, sensor noise interface, ultrasonic partial discharge sensor interface, power frequency component input interface, power frequency period trigger circuit, first, two, three Acquisition Circuit, sensor interface is put in described first superfrequency office, described first filter amplification circuit is connected successively with described first Acquisition Circuit head and the tail and exports the input end of described controller to, sensor interface is put in described second superfrequency office, described second filter amplification circuit is connected successively with described second Acquisition Circuit head and the tail and exports the input end of described controller to, described sensor noise interface exports the input end of first and second filter amplification circuit respectively by signal distribution module, described ultrasonic partial discharge sensor interface, the 3rd filter amplification circuit are connected successively with the 3rd Acquisition Circuit head and the tail and export the input end of described controller to, the output terminal of described power frequency component input interface connects the input end of described power frequency period trigger circuit, the output terminal of described power frequency period trigger circuit connects the input end of described controller, the input end of described controller is connected with human inductor, whether have people near sending corresponding testing result to controller to detect, the output terminal of described controller is connected with LCD to show the result gathering Partial discharge signal, described controller controls the start and stop of described LCD according to testing result.
2. energy-conservation local discharge signal harvester according to claim 1, is characterized in that, the input end of described controller is connected with input keyboard to realize man-machine interaction.
3. energy-conservation local discharge signal harvester according to claim 1, is characterized in that, described human inductor is infrared sensor.
4. energy-conservation local discharge signal harvester according to claim 1, is characterized in that, the output terminal of described controller is connected with for detecting when Partial discharge signal exceedes parameter preset and the alarm relay responded.
5. energy-conservation local discharge signal harvester according to claim 1, is characterized in that, described alarm relay is pilot lamp or hummer.
6. energy-conservation local discharge signal harvester according to claim 1, is characterized in that, the output terminal of described controller is provided with RJI45 interface and optical fiber interface.
7. energy-conservation local discharge signal harvester according to claim 1, is characterized in that, first, second Acquisition Circuit described is High Speed Data Acquisition Circuit, and described 3rd Acquisition Circuit is medium speed data Acquisition Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510885805.3A CN105548828A (en) | 2015-12-04 | 2015-12-04 | Energy-saving partial discharge signal acquisition device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510885805.3A CN105548828A (en) | 2015-12-04 | 2015-12-04 | Energy-saving partial discharge signal acquisition device |
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| CN105548828A true CN105548828A (en) | 2016-05-04 |
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| CN201510885805.3A Pending CN105548828A (en) | 2015-12-04 | 2015-12-04 | Energy-saving partial discharge signal acquisition device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175600A (en) * | 2019-12-31 | 2020-05-19 | 浙江黑卡电气有限公司 | Multi-dimensional dynamic acquisition anti-interference comprehensive detection device and detection method |
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Patent Citations (7)
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| CN102608502A (en) * | 2012-03-01 | 2012-07-25 | 华北电力大学 | Intelligent ultrahigh frequency local charge sensor |
| JP2015040763A (en) * | 2013-08-22 | 2015-03-02 | 株式会社日立製作所 | Partial discharge measurement apparatus and method thereof |
| CN203773011U (en) * | 2014-03-24 | 2014-08-13 | 三泰电力技术（南京）股份有限公司 | Partial discharge detector based on audio power amplifier circuit |
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| CN111175600A (en) * | 2019-12-31 | 2020-05-19 | 浙江黑卡电气有限公司 | Multi-dimensional dynamic acquisition anti-interference comprehensive detection device and detection method |
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Application publication date: 20160504 |
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