CN211263675U - Partial discharge detection device - Google Patents
Partial discharge detection device Download PDFInfo
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- CN211263675U CN211263675U CN201921478190.2U CN201921478190U CN211263675U CN 211263675 U CN211263675 U CN 211263675U CN 201921478190 U CN201921478190 U CN 201921478190U CN 211263675 U CN211263675 U CN 211263675U
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Abstract
The utility model relates to a partial discharge detection device. The partial discharge detection device includes: the system comprises a plurality of partial discharge detection sensors, a plurality of data acquisition units and a plurality of data processing units, wherein the partial discharge detection sensors are respectively arranged in a plurality of ring main units and are used for acquiring optical signals in the ring main units; wherein, a ring main unit is correspondingly provided with a partial discharge detection sensor; and the partial discharge analyzer is respectively connected with each partial discharge detection sensor and is used for analyzing the partial discharge condition in each ring main unit by combining the optical signals collected by each partial discharge detection sensor. This application on the one hand can avoid because the inside complexity of electrical equipment, leads to the condition of the position that hardly accurate judgement partial discharge takes place, and on the other hand can also realize the online detection in the time of many looped netowrk cabinet partial discharge conditions, improves the work efficiency of detection maintenance.
Description
Technical Field
The utility model relates to a photoelectric detection technical field especially relates to a partial discharge detection device.
Background
Partial discharge is one of important parameters for representing the insulation state of the electrical equipment, so that accurate detection of the partial discharge condition of the electrical equipment is the key for realizing online monitoring and state evaluation of the insulation state of the electrical equipment. Partial discharge of electrical equipment not only generates electric pulses, but also accompanies physical phenomena such as electromagnetic radiation, ultrasonic waves and light effects, and causes local overheating. At present, methods for detecting partial discharge of electrical equipment mainly include a pulse current method, an ultrahigh frequency method, a chemical detection method, a photometric method and the like. The local discharge pulse current method is the only quantitative detection method recommended by the IEC60270 standard at present, but the detection frequency is low, and the method is easily influenced by various field electromagnetic interferences, so the method cannot be effectively used for field detection and is usually only used for quantitative detection in a low-interference environment. The ultrahigh frequency method has high detection sensitivity and strong anti-interference capability, but the quantitative problem is not completely solved. The chemical detection method can reflect the overall degree of partial discharge, but has a long detection period and does not meet the requirement of on-line monitoring. At present, partial discharge signals are mostly obtained from the outside of electrical equipment by a partial discharge detection method, and due to the complexity of some electrical equipment (such as a transformer), the position where partial discharge occurs is difficult to accurately judge.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a partial discharge detection apparatus.
A partial discharge detection apparatus, the apparatus comprising:
the system comprises a plurality of partial discharge detection sensors, a plurality of data acquisition units and a plurality of data processing units, wherein the partial discharge detection sensors are respectively arranged in a plurality of ring main units and are used for acquiring optical signals in the ring main units; wherein, a ring main unit is correspondingly provided with a partial discharge detection sensor;
and the partial discharge analyzer is respectively connected with each partial discharge detection sensor and is used for analyzing the partial discharge condition in each ring main unit by combining the optical signals collected by each partial discharge detection sensor.
In one embodiment, each partial discharge detection sensor is a fluorescent optical fiber sensor, and the fluorescent optical fiber sensor is disposed in the main air chamber of the ring main unit.
In one embodiment, the partial discharge analyzer is a hand-held photometric signal detector, and the hand-held photometric signal detector is connected with each fluorescent optical fiber sensor through a transmission optical fiber.
In one embodiment, the end of the transmission fiber connected with the fluorescent fiber sensor is connected with an intermediate flange through an APC/FC joint.
In one embodiment, one end of the transmission optical fiber connected with the partial discharge analyzer is connected with an SMA905 connector.
In one embodiment, the partial discharge analyzer comprises a plurality of photomultiplier tubes and a signal processing unit; each photomultiplier is correspondingly connected with each partial discharge detection sensor respectively and is used for converting optical signals collected by each partial discharge detection sensor into electric signals; the signal processing unit is connected with each photomultiplier and is used for analyzing each electric signal.
In one embodiment, the partial discharge analyzer further includes:
and each signal amplification circuit is correspondingly connected with each photomultiplier respectively and is used for amplifying each electric signal converted by the photomultiplier.
In one embodiment, the partial discharge analyzer further includes:
and the filter circuits are respectively and correspondingly connected with the signal amplification circuits and are used for filtering the amplified electric signals.
In one embodiment, the partial discharge analyzer further includes:
and the display unit is connected with the signal processing unit and used for displaying the state of each ring main unit according to the analysis result.
In one embodiment, the partial discharge analyzer further includes:
and the power supply module is used for providing electric quantity required by work for the local discharge analyzer.
The partial discharge detection device arranges the plurality of partial discharge detection sensors in the ring main units, one ring main unit is correspondingly provided with the partial discharge detection sensors, and then the partial discharge analysis meter is combined with the optical signals collected by the partial discharge detection sensors to analyze the partial discharge condition in each ring main unit.
Drawings
FIG. 1 is a schematic diagram of a partial discharge detection apparatus according to an embodiment;
fig. 2 is a schematic structural diagram of a partial discharge detection apparatus in another embodiment.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
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. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Fig. 1 is a schematic structural diagram of a partial discharge detection apparatus in an embodiment. The partial discharge detection device can be used for realizing the online detection of the partial discharge of the ring main unit. The apparatus may include a number of partial discharge detection sensors 110a, 110b, … and a partial discharge analyzer 20; the partial discharge detection sensors 110a, 110b and … are respectively arranged inside the ring main units 10a, 10b and …, and only one partial discharge detection sensor is correspondingly arranged inside each ring main unit; for convenience of description and illustration, the following embodiments of the present application all take the partial discharge detection sensor 110a disposed inside the ring main unit 10a as an example for illustration, where the partial discharge detection sensor 110a is used for collecting an optical signal inside the ring main unit 10a, and since a place where the partial discharge occurs in the ring main unit 10a is mainly concentrated in a main air chamber thereof, in order to make a detection result more accurate, the partial discharge detection sensor 110a of the present application may also be disposed in the main air chamber of the ring main unit 10a for detecting the optical signal in the main air chamber of the ring main unit 10 a; further, the partial discharge detection sensor 110a may be a fluorescent optical fiber sensor.
The partial discharge analyzer 20 is connected to each of the partial discharge detection sensors 110a, 110b, and …, and is configured to analyze a partial discharge condition inside each of the ring main units 10a, 10b, and … by combining optical signals collected by each of the partial discharge detection sensors 110a, 110b, and …. Further, the partial discharge 20 of the present application may be a hand-held photometric signal detector, preferably a hand-held photometric signal detector with multiple transmission interfaces; the hand-held optical measurement signal detector is connected with each fluorescent optical fiber sensor through a transmission optical fiber; further, referring to fig. 2, taking the fluorescent optical fiber sensor 110a disposed inside the ring main unit 10a as an example, the partial discharge detection sensor 110a is connected to the partial discharge analyzer 20 through a transmission optical fiber S1, one end of the transmission optical fiber S1 connected to the fluorescent optical fiber sensor 110a is connected to an intermediate flange 140a through an APC connector 120a/FC connector 130a, wherein the flange 140a is disposed between the APC connector 120a and the FC connector 130 a; one end of the transmission optical fiber S1 connected with the partial discharge analyzer 20 is connected with an SMA905 connector 210.
Fig. 2 is a schematic structural diagram of a partial discharge detection apparatus in another embodiment. As shown in fig. 2, the partial discharge analyzer 20 in the partial discharge detection apparatus may include a plurality of photomultiplier tubes 220 … and a signal processing unit 230; each of the photomultiplier tubes 220 is correspondingly connected to the partial discharge detection sensors 110a, 110b, …, that is, one photomultiplier tube 220 is correspondingly connected to one partial discharge detection sensor, and the plurality of photomultiplier tubes 220 are used to convert the optical signals collected by each of the partial discharge detection sensors into electrical signals; the signal processing unit is connected with each photomultiplier and is used for analyzing each electric signal.
In one embodiment, the partial discharge analyzer 20 of the present application may further include a plurality of signal amplifying circuits (not shown) and a plurality of filtering circuits (not shown); each signal amplification circuit is correspondingly connected with each photomultiplier tube 220 …, that is, one signal amplification circuit is correspondingly connected with one photomultiplier tube; the signal amplification circuits are used for amplifying the electric signals converted by the photomultiplier tubes 220 …; each filter circuit is correspondingly connected with each signal amplification circuit, namely, one filter circuit is correspondingly connected with one signal amplification circuit; each filter circuit is used for filtering each amplified electric signal.
Furthermore, the partial discharge analyzer of the present application may further include a display unit 240, where the display unit 240 is connected to the signal processing unit 230, and is configured to display the status of each of the ring main units 10a, 10b, and … according to the analysis result. Specifically, the Display unit 240 may be a Light-Emitting Diode (LED), a Liquid Crystal Display (LCD), an On-Screen Display (OSD), and other devices capable of displaying. The display unit 240 can display the states of multiple ring main units simultaneously, so that an operator can conveniently search and maintain the ring main units with partial discharge. It can be understood that the partial discharge analyzer 20 of the present application is further provided with a power supply module (not shown), which mainly supplies power to each module or circuit in the partial discharge analyzer 20, so that the partial discharge analyzer 20 can be used in a portable manner.
In summary, the present application takes the fluorescent optical fiber sensor 110a, the transmission optical fiber S1, the APC connector 120a, the middle flange 140a, the FC connector 130a, the SMA905 connector 210, the photomultiplier 220, the signal amplifier circuit, the filter circuit, the signal processing unit 230, and the display unit 240 disposed in the main air chamber of the ring main unit 10a as an example to explain one of the detection principles of the present application:
the partial discharge light signal that produces in the main plenum of looped netowrk cabinet 10a is surveyed by fluorescence optical fiber sensor 110a, then transmit to photomultiplier 220 through transmission optic fibre S1, adopt SMA905 joint 210 to connect between photomultiplier 220 and the transmission optic fibre S1, photomultiplier 220 converts the light signal who detects into the signal of telecommunication, then transmit to signal amplification circuit and filter circuit, signal amplification circuit and filter circuit gather the signal of telecommunication and export to signal processing unit 230 after filtering and amplifying, signal processing unit 230 analyzes the signal of telecommunication, in order to obtain accurate effectual signal information, show the output through display element 240 finally, the testing personnel can obtain current looped netowrk cabinet 10 a' S state through display element 240, know whether there is partial discharge to produce.
Further, in order to avoid that an operator cannot find an analysis result in time, the local discharge analyzer of the present application can also send the ring main unit information of abnormal discharge, which is judged by the signal processing unit 230, to a terminal device through a wireless network. The terminal equipment can be intelligent wearable equipment, such as an intelligent bracelet, a wireless earphone and the like, can also be an intelligent mobile phone, and can also be a tablet personal computer and the like; the information of the ring main unit with abnormal discharge is sent to the terminal equipment, namely the serial number signal or the position information of the ring main unit can be sent to the terminal equipment, so that the searching and the maintenance of operators are facilitated.
In summary, the plurality of partial discharge detection sensors are arranged inside the plurality of ring main units, one ring main unit is correspondingly provided with one partial discharge detection sensor, and then the partial discharge analyzer is combined with the optical signals collected by the partial discharge detection sensors to analyze the partial discharge condition inside each ring main unit, so that on one hand, compared with the condition that the partial discharge signals are obtained from the outside of the electrical equipment, the situation that the position of partial discharge is difficult to accurately judge due to the complexity inside the electrical equipment can be overcome, on the other hand, the simultaneous online detection of the partial discharge conditions of a plurality of ring main units can be realized, and the working efficiency of detection and maintenance is improved; furthermore, the signals are processed by arranging the signal amplifying circuit and the filter circuit, so that the analysis result is more accurate, and the analysis result is more visual by arranging the display unit to display the measured partial discharge condition inside the ring main unit in real time.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A partial discharge detection apparatus, the apparatus comprising:
the system comprises a plurality of partial discharge detection sensors, a plurality of data acquisition units and a plurality of data processing units, wherein the partial discharge detection sensors are respectively arranged in a plurality of ring main units and are used for acquiring optical signals in the ring main units; wherein, a ring main unit is correspondingly provided with a partial discharge detection sensor;
and the partial discharge analyzer is respectively connected with each partial discharge detection sensor and is used for analyzing the partial discharge condition in each ring main unit by combining the optical signals collected by each partial discharge detection sensor.
2. The partial discharge detection device according to claim 1, wherein each of the partial discharge detection sensors is a fluorescent optical fiber sensor, and the fluorescent optical fiber sensor is disposed in the main air chamber of the ring main unit.
3. The partial discharge detection apparatus of claim 2, wherein the partial discharge analyzer is a hand-held photometric signal detector, and the hand-held photometric signal detector is connected to each of the fluorescent optical fiber sensors through a transmission optical fiber.
4. The partial discharge detection apparatus according to claim 3, wherein an end of the transmission fiber connected to the fluorescent fiber sensor is connected to an intermediate flange through an APC/FC joint.
5. The partial discharge detection device of claim 4, wherein the end of the transmission fiber connected to the partial discharge analyzer is connected to the SMA905 connector.
6. The partial discharge detection apparatus according to any one of claims 1 to 5, wherein the partial discharge analyzer includes a plurality of photomultiplier tubes and a signal processing unit; each photomultiplier is correspondingly connected with each partial discharge detection sensor respectively and is used for converting optical signals collected by each partial discharge detection sensor into electric signals; the signal processing unit is connected with each photomultiplier and is used for analyzing each electric signal.
7. The partial discharge detection apparatus according to claim 6, wherein the partial discharge analyzer further comprises:
and each signal amplification circuit is correspondingly connected with each photomultiplier respectively and is used for amplifying each electric signal converted by the photomultiplier.
8. The partial discharge detection apparatus according to claim 7, wherein the partial discharge analyzer further comprises:
and the filter circuits are respectively and correspondingly connected with the signal amplification circuits and are used for filtering the amplified electric signals.
9. The partial discharge detection apparatus according to claim 8, wherein the partial discharge analyzer further comprises:
and the display unit is connected with the signal processing unit and used for displaying the state of each ring main unit according to the analysis result of the signal processing unit analyzing each electric signal.
10. The partial discharge detection apparatus according to claim 9, wherein the partial discharge analyzer further comprises:
and the power supply module is used for providing electric quantity required by work for the local discharge analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921478190.2U CN211263675U (en) | 2019-09-05 | 2019-09-05 | Partial discharge detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921478190.2U CN211263675U (en) | 2019-09-05 | 2019-09-05 | Partial discharge detection device |
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| CN211263675U true CN211263675U (en) | 2020-08-14 |
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| CN201921478190.2U Active CN211263675U (en) | 2019-09-05 | 2019-09-05 | Partial discharge detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609219A (en) * | 2019-09-05 | 2019-12-24 | 广州供电局有限公司 | Partial discharge detection device and method |
| CN111929550A (en) * | 2020-09-15 | 2020-11-13 | 海南电网有限责任公司电力科学研究院 | Partial discharge judgment device for power equipment |
-
2019
- 2019-09-05 CN CN201921478190.2U patent/CN211263675U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609219A (en) * | 2019-09-05 | 2019-12-24 | 广州供电局有限公司 | Partial discharge detection device and method |
| CN111929550A (en) * | 2020-09-15 | 2020-11-13 | 海南电网有限责任公司电力科学研究院 | Partial discharge judgment device for power equipment |
| CN111929550B (en) * | 2020-09-15 | 2023-08-22 | 海南电网有限责任公司电力科学研究院 | Power equipment partial discharge judging device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20210223 Address after: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
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