CN112034316A - Optical isolator for detecting partial discharge of oscillation wave and partial discharge detection device - Google Patents
Optical isolator for detecting partial discharge of oscillation wave and partial discharge detection device Download PDFInfo
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- CN112034316A CN112034316A CN202010897571.5A CN202010897571A CN112034316A CN 112034316 A CN112034316 A CN 112034316A CN 202010897571 A CN202010897571 A CN 202010897571A CN 112034316 A CN112034316 A CN 112034316A
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- partial discharge
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- discharge detection
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- 230000003287 optical effect Effects 0.000 title claims abstract description 53
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 230000010355 oscillation Effects 0.000 title claims abstract description 12
- 230000005284 excitation Effects 0.000 claims abstract description 23
- 229920006324 polyoxymethylene Polymers 0.000 claims description 13
- 230000003534 oscillatory effect Effects 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 11
- -1 polyoxymethylene Polymers 0.000 claims description 6
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 230000002596 correlated effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 2
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- 238000000034 method Methods 0.000 description 3
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- 229910000831 Steel Inorganic materials 0.000 description 2
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- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000011354 acetal resin Substances 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
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Classifications
-
- 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
- G01R31/1218—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 optical methods; using charged particle, e.g. electron, beams or X-rays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
-
- 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
- G01R31/1227—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 of components, parts or materials
- G01R31/1263—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention belongs to the technical field of power equipment measurement, and provides an optical isolator for oscillation wave partial discharge detection and a partial discharge detection device. The optical isolator for detecting the partial discharge of the oscillation wave comprises a luminous source, a light shielding pipe and a light receiving and exciting source; the light emitting source and the light receiving excitation source are oppositely arranged at two ends of the shading tube; the luminous source is used for converting the electric signal triggering the fixed electronic switch into an optical signal; the light receiving excitation source is used for receiving the optical signal emitted by the light emitting source and converting the optical signal into an electric signal.
Description
Technical Field
The invention belongs to the technical field of power equipment measurement, and particularly relates to an optical isolator for oscillation wave partial discharge detection and a partial discharge detection device.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In the technical field of partial discharge detection of power equipment, the optical isolator is widely used, can realize the conversion of an electric-optical-electric signal, and has good isolation effect on an input electric signal and an output electric signal. An optical trigger is adopted in a circuit of an oscillatory wave partial discharge test system for triggering a solid electronic switch, but the isolation withstand voltage of the conventional optical trigger is 5kV at most, and the actual isolation voltage of an oscillatory wave partial discharge test reaches more than 30 kV; the solid electronic switch of the oscillatory wave partial discharge test system needs high-voltage isolation and is driven by a disposable battery, and the inventor finds that the battery power supply has static leakage current loss reaching the mu A level due to the built-in operational amplifier output of the existing optical fiber transceiver, so that the long-term use of the battery power supply is not facilitated.
Disclosure of Invention
In order to solve the above problems, the present invention provides an opto-isolator and a partial discharge detection apparatus for detecting partial discharge of an oscillation wave, which do not require a built-in operational amplifier output and have a leakage current of PA level.
In order to achieve the purpose, the invention adopts the following technical scheme:
a first aspect of the invention provides an opto-isolator for oscillatory wave partial discharge detection.
An optical isolator for detecting partial discharge of oscillation wave comprises a light emitting source, a light shielding tube and a light receiving excitation source;
the light emitting source and the light receiving excitation source are oppositely arranged at two ends of the shading tube;
the luminous source is used for converting the electric signal triggering the fixed electronic switch into an optical signal;
the light receiving excitation source is used for receiving the optical signal emitted by the light emitting source and converting the optical signal into an electric signal.
A second aspect of the present invention provides a partial discharge detection apparatus.
A partial discharge detection apparatus comprising an optical trigger for triggering a solid state electronic switch; the optical trigger includes the optical isolator.
The invention has the beneficial effects that:
the light-emitting source and the light-receiving excitation source are oppositely arranged at two ends of the shading tube, the light-emitting source is used for converting an electric signal for triggering the fixed electronic switch into an optical signal, the light-receiving excitation source receives the optical signal emitted by the light-emitting source and converts the optical signal into the electric signal, the electric signal is converted into the optical signal through the light-emitting source and is transmitted in the shading tube, and the light-receiving excitation source converts the optical signal into the electric signal to be output. In the process, the internal operational amplifier output is not needed, and high-voltage isolation of more than 30kV and leakage current of PA grade are realized.
The optical isolator for detecting the partial discharge of the oscillation wave is applied to a partial discharge detection device, so that the volume and the weight of the whole partial discharge detection device are reduced, and the development cost is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic structural diagram of an opto-isolator for detecting partial discharge of an oscillating wave according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
Referring to fig. 1, the optical isolator for oscillation wave partial discharge detection of the present embodiment is characterized by including a light emitting source 1, a light shielding tube 2, and a light receiving excitation source 3.
In fig. 1, a light emitting source 1 and a light receiving excitation source 3 are oppositely arranged at both ends of a light shielding tube 2.
Wherein, the luminous source 1 is used for converting an electric signal for triggering the fixed electronic switch into an optical signal;
the light receiving excitation source 3 is used for receiving the optical signal emitted by the light emitting source and converting the optical signal into an electrical signal.
In a specific implementation, the light shielding tube 2 seamlessly accommodates the light emitting source 1.
The light shielding tube 2 seamlessly accommodates the light receiving excitation source 3.
Therefore, the problem of signal loss caused by optical signal leakage is avoided, and the integrity of signals in the optical isolation process of the oscillation wave partial discharge detection is guaranteed.
In a specific implementation, the light shielding tube is a black light shielding tube made of POM polyformaldehyde resin material.
Among them, polyoxymethylene (hereinafter, abbreviated as polyformaldehyde) is also known as acetal resin (acetaln resins); polyoxymethylene (polyoxymethylenes). Full name of polyoxymethylene resin, abbreviated as polyoxymethylene, thermoplastic crystalline polymer. Is known as "super steel" or "match steel". The structural formula is shown as follows, and the English is abbreviated as POM. The polymers obtained by formaldehyde polymerization have a low degree of polymerization and are susceptible to thermal depolymerization. The POM has high strength and rigidity, good elasticity and good abrasion resistance; the electric insulation property is good, the arc resistance is excellent, and the high-temperature-resistant cable can be maintained at high temperature.
In the present embodiment, the light shielding tube is implemented by a light shielding cylindrical tube. The structure of the cylindrical pipe can avoid the conditions of reflection and the like of optical signals in the transmission process, and the transmission efficiency and the stability of the optical signals are improved.
It is understood that in other embodiments, the light shielding tube may be a tube with other structures, such as an oval shape, etc., and those skilled in the art may specifically arrange the light shielding tube according to the actual situation, and will not be described in detail herein.
It should be noted that the light-emitting source of the present embodiment is an infrared emitting diode, and the light-emitting source is connected to the driving circuit. The light receiving excitation source is an infrared receiving diode. The light receiving excitation source is connected with an external output control circuit.
In other embodiments, the light emitting source and the light receiving excitation source can be implemented by other photoelectric tubes, which are not described in detail herein.
In a specific implementation, the length of the light shielding tube is positively correlated with the actual isolation voltage.
For example: when the actual isolation voltage is 10kv, the minimum length of the light shielding tube is 6 cm;
when the actual isolation voltage is 35kv, the minimum length of the light-shielding tube is 10 cm.
In the embodiment, the light source and the light receiving excitation source are oppositely arranged at two ends of the shading tube, the light source is used for converting the electrical signal for triggering the fixed electronic switch into the optical signal, the light receiving excitation source receives the optical signal emitted by the light source and converts the optical signal into the electrical signal, the electrical signal is converted into the optical signal through the light source and is transmitted in the shading tube, and the optical signal is converted into the electrical signal through the light receiving excitation source and is output. In the process, the internal operational amplifier output is not needed, and high-voltage isolation of more than 30kV and leakage current of PA grade are realized.
In another embodiment, there is also provided a partial discharge detection apparatus comprising an optical trigger for triggering a solid-state electronic switch; the optical trigger includes the optical isolator.
It should be noted that other structures of the partial discharge detection apparatus in this embodiment are all existing structures, and those skilled in the art can set the partial discharge detection apparatus according to specific working conditions, which is not described in detail herein.
The optical isolator for the oscillation wave partial discharge detection is applied to a partial discharge detection device, so that the volume and the weight of the whole partial discharge detection device are reduced, and the development cost is reduced.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An optical isolator for detecting partial discharge of oscillation wave is characterized by comprising a luminous source, a light shielding pipe and a light receiving and exciting source;
the light emitting source and the light receiving excitation source are oppositely arranged at two ends of the shading tube;
the luminous source is used for converting the electric signal triggering the fixed electronic switch into an optical signal;
the light receiving excitation source is used for receiving the optical signal emitted by the light emitting source and converting the optical signal into an electric signal.
2. The optical isolator for oscillatory wave partial discharge detection of claim 1, wherein the light shielding tube seamlessly accommodates the light emitting source.
3. The optical isolator for oscillatory wave partial discharge detection of claim 1, wherein the light-shielding tube seamlessly accommodates a light excitation source.
4. The optical isolator for oscillatory wave partial discharge detection according to claim 1, wherein the light shielding tube is a black light shielding tube made of POM polyoxymethylene resin material.
5. The opto-isolator for oscillatory wave partial discharge detection of claim 1, wherein the light emitting source is an infrared emitting diode.
6. The optoisolator for oscillatory wave partial discharge detection of claim 1 or 5, wherein the light emitting source is connected to a driving circuit.
7. The optical isolator for oscillatory wave partial discharge detection of claim 1, wherein the photo-receptive excitation source is an infrared receiving diode.
8. The optical isolator for detecting partial discharge of oscillating wave according to claim 1 or 7, wherein the light receiving excitation source is connected to an external output control circuit.
9. The optical isolator for oscillatory wave partial discharge detection of claim 1, wherein the length of the light shielding tube is positively correlated to the actual isolation voltage.
10. A partial discharge detection device, comprising an optical trigger for triggering a solid-state electronic switch; the optical trigger comprising an opto-isolator for oscillatory wave partial discharge detection as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010897571.5A CN112034316A (en) | 2020-08-31 | 2020-08-31 | Optical isolator for detecting partial discharge of oscillation wave and partial discharge detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010897571.5A CN112034316A (en) | 2020-08-31 | 2020-08-31 | Optical isolator for detecting partial discharge of oscillation wave and partial discharge detection device |
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| Publication Number | Publication Date |
|---|---|
| CN112034316A true CN112034316A (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010897571.5A Pending CN112034316A (en) | 2020-08-31 | 2020-08-31 | Optical isolator for detecting partial discharge of oscillation wave and partial discharge detection device |
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| CN (1) | CN112034316A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114043185A (en) * | 2021-11-29 | 2022-02-15 | 天津吉达尔重型机械科技股份有限公司 | Pull rod production and processing device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2317401Y (en) * | 1997-03-27 | 1999-05-05 | Osa伊莱克特尼克有限公司 | Luminous or display element for optical input of optical conductor |
| CN101937202A (en) * | 2010-09-30 | 2011-01-05 | 曹志才 | Key-press input module |
| CN202050415U (en) * | 2011-03-24 | 2011-11-23 | 中国科学院等离子体物理研究所 | Optical fiber direct isolation transmission system for analogue signal in fusion device |
| CN102353825A (en) * | 2011-06-03 | 2012-02-15 | 清华大学 | Resistor sampling isolation current detection circuit |
| CN103809092A (en) * | 2014-02-19 | 2014-05-21 | 广西电网公司电力科学研究院 | Test equipment for partial discharge of oscillatory wave cable based on optical electric field transducer |
| CN104569636A (en) * | 2013-10-16 | 2015-04-29 | 深圳市威尔利实业有限公司 | Circuit and device for early warning degradation of MOV (metal oxide varistor) of surge protection device |
| CN206441177U (en) * | 2016-12-14 | 2017-08-25 | 吉首大学 | A kind of computer network automaton |
| CN207908624U (en) * | 2018-03-22 | 2018-09-25 | 南京普源电气有限公司 | A kind of cable exchange oscillation wave partial discharge detection equipment |
-
2020
- 2020-08-31 CN CN202010897571.5A patent/CN112034316A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2317401Y (en) * | 1997-03-27 | 1999-05-05 | Osa伊莱克特尼克有限公司 | Luminous or display element for optical input of optical conductor |
| CN101937202A (en) * | 2010-09-30 | 2011-01-05 | 曹志才 | Key-press input module |
| CN202050415U (en) * | 2011-03-24 | 2011-11-23 | 中国科学院等离子体物理研究所 | Optical fiber direct isolation transmission system for analogue signal in fusion device |
| CN102353825A (en) * | 2011-06-03 | 2012-02-15 | 清华大学 | Resistor sampling isolation current detection circuit |
| CN104569636A (en) * | 2013-10-16 | 2015-04-29 | 深圳市威尔利实业有限公司 | Circuit and device for early warning degradation of MOV (metal oxide varistor) of surge protection device |
| CN103809092A (en) * | 2014-02-19 | 2014-05-21 | 广西电网公司电力科学研究院 | Test equipment for partial discharge of oscillatory wave cable based on optical electric field transducer |
| CN206441177U (en) * | 2016-12-14 | 2017-08-25 | 吉首大学 | A kind of computer network automaton |
| CN207908624U (en) * | 2018-03-22 | 2018-09-25 | 南京普源电气有限公司 | A kind of cable exchange oscillation wave partial discharge detection equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114043185A (en) * | 2021-11-29 | 2022-02-15 | 天津吉达尔重型机械科技股份有限公司 | Pull rod production and processing device |
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Application publication date: 20201204 |
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