CN104655993A - Transformer partial discharge online monitoring system - Google Patents
Transformer partial discharge online monitoring system Download PDFInfo
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- CN104655993A CN104655993A CN201510041556.XA CN201510041556A CN104655993A CN 104655993 A CN104655993 A CN 104655993A CN 201510041556 A CN201510041556 A CN 201510041556A CN 104655993 A CN104655993 A CN 104655993A
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Abstract
The invention relates belongs to the technical field of communication and relates to a monitoring system, in particular to a transformer partial discharge online monitoring system. The transformer partial discharge online monitoring system comprises a diagnostic analysis unit, and a communication unit is connected to the diagnostic analysis unit. A plurality of collecting units are connected to the communication unit, and a plurality of sensing units connected with an electric transducer are connected to each collecting unit. A plurality of different types of sensors bound together are connected to each sensing unit, and a power supply module is arranged on each sensor. Compared with the prior art, the transformer partial discharge online monitoring system has the advantages that a piezoelectric sensor keeps away from the magnetic noises of an iron core and the mechanical vibration and noises of a transformer; a super-high-frequency sensor does not play a role of capacity coupling but plays a role of an antenna for receiving super-high-frequency signals, the diagnostic analysis unit can simultaneously start the operation of a plurality of modules to realize data reference among the different modules; the communication unit has diversified ways and also can be suitable for all kinds of environment in the data transmission process.
Description
Technical field
Invention relates to communication technique field, refers to a kind of monitoring system, especially a kind of transformer partial discharge on-line monitoring system.
Background technology
Shelf depreciation is the one of the main reasons causing Electric Power Equipment Insulation deterioration, each electric discharge, the impact of high-energy electron or acceleration electronics, particularly long-term shelf depreciation effect all can cause physical influence and the chemical reaction of various ways, during as charging point shock bubble outer wall, just may interrupt the chemical bond of medium, destroy the molecular structure of medium, cause insulation degradation, accelerate insulation damages process.Likely cause equipment failure time serious, even have influence on the normal operation of electrical network.
In a complicated electrical equipment, occurring in the electric discharge of different parts, is different to the destruction of insulation.Shelf depreciation is accurately located thus Accurate Determining discharge capacity, judge its to insulation harm for power equipment safeguard, improve product design and technique etc. all have great importance.Therefore, no matter partial discharge monitoring, as detecting transformer insulated a kind of effective means, is etection theory or detection technique, all achieves larger development in recent years, and be applied in power plant and power station.Although existing detection has possessed more function, the diversity realizing on-line testing is perfect not enough, and the approach of usual on-line testing is more single, cannot meet the demand of all kinds of environment.
Summary of the invention
The object of invention is for the problems referred to above, provides a kind of collecting test signal variation, compact conformation, good reliability, the transformer partial discharge on-line monitoring system that antijamming capability is strong.
For achieving the above object, invention have employed following technical proposal: transformer partial discharge on-line monitoring system, it is characterized in that, comprise diagnostic analysis unit, described diagnostic analysis unit is connected with communication unit, this communication unit is connected with several collecting units, each collecting unit is connected with again several sensing units be connected with power transformation device, this sensing unit is connected with several dissimilar sensors bundled, covers disposed on sensor has power module;
Collecting unit: Frequency Band Selection, High frequency amplification, the detecting way selection circuit that can control the power supply in sensing unit, different probe, the echo information of detected object inside is scanned and converts digital signal to, after further process, storage, then give diagnostic analysis unit;
Diagnostic analysis unit: directly can connect display, judges, or by setting the parameter appraised and decided, obtaining corresponding parameter check by collecting unit between artificial, so judge whether qualified.
In above-mentioned a kind of transformer partial discharge on-line monitoring system, described diagnostic analysis unit comprises ultrasound examination module, electric pulse detection module, ultra-high-frequency detection module.
In above-mentioned a kind of transformer partial discharge on-line monitoring system, described sensor comprises promising ultrasonic sensor, and this ultrasonic sensor is piezoelectric sensor.
In above-mentioned a kind of transformer partial discharge on-line monitoring system, it is 70 ~ 150kHz that described sensor includes piezoelectric sensor frequency range.
Preferably, described piezoelectric sensor frequency range is 90 ~ 120kHz.
In above-mentioned a kind of transformer partial discharge on-line monitoring system, described sensor includes pulses of current sensor.
In above-mentioned a kind of transformer partial discharge on-line monitoring system, described sensor includes uhf sensor, and frequency range is 300 ~ 3000MHz.
Preferably, described sensor is uhf sensor, and frequency range is 500 ~ 2500MHz.
In above-mentioned a kind of transformer partial discharge on-line monitoring system, in described communication unit, be provided with the receiver that can receive uhf sensor.
In above-mentioned a kind of transformer partial discharge on-line monitoring system, described communication unit support is based on the network communication mode of optical fiber; Support power line carrier, PLC mode; Support of wireless communication; Address established by communication unit energy software, just can export data when receiving the machine address, directly can connect various single-chip microcomputer and use, realize software programming; Communication unit receives logarithmic output signal certificate to data acquisition unit.
Compared with prior art, the advantage of invention is: adopt different types by sensor, can realize the variation of Information Monitoring, plays the multi-ensuring to On Line PD Monitoring of Transformer; Adopt multiple acquisition mode antijamming capability strong simultaneously; Piezoelectric sensor avoids magnetic noise unshakable in one's determination and the mechanical vibration noise of transformer; And uhf sensor has been not capacity coupled effect, but receive the antenna of ultra-high frequency signal.Diagnostic analysis unit can start the computing of multiple module simultaneously, realizes the data reference between disparate modules; Communication unit mode diversity, is applicable to all kinds of environment in the process also making its data transmit.
Accompanying drawing explanation
In order to be illustrated more clearly in inventive embodiments or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the module diagram of invention.
Embodiment
Below in conjunction with the accompanying drawing in inventive embodiments, be clearly and completely described the technical scheme in inventive embodiments, obviously, described embodiment is only a part of embodiment of invention, instead of whole embodiments.Based on the embodiment in invention, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of invention protection.
Embodiment 1
As shown in Figure 1, transformer partial discharge on-line monitoring system, comprises diagnostic analysis unit 1, and described diagnostic analysis unit comprises ultrasound examination module 2, electric pulse detection module 3, ultra-high-frequency detection module 4.Different collected signal can be detected by different modules, make it possess multiple monitoring function.Collecting unit: Frequency Band Selection, High frequency amplification, the detecting way selection circuit that can control the power supply in sensing unit, different probe, the echo information of detected object inside is scanned and converts digital signal to, after further process, storage, then give diagnostic analysis unit;
Diagnostic analysis unit: directly can connect display, judges, or by setting the parameter appraised and decided, obtaining corresponding parameter check by collecting unit between artificial, so judge whether qualified.Described diagnostic analysis unit is connected with communication unit 5, and described communication unit support is based on the network communication mode of optical fiber; Support power line carrier, PLC mode; Support of wireless communication.Address established by communication unit energy software, just can export data when receiving the machine address, directly can connect various single-chip microcomputer and use, realize software programming; Communication unit receives logarithmic output signal certificate to data acquisition unit.The receiver 6 that can receive uhf sensor is provided with in described communication unit.This communication unit is connected with several collecting units 7, each collecting unit is connected with again the sensing unit 8 that several are connected with power transformation device, this sensing unit is connected with the sensor that several are dissimilar.As; It is ultrasonic sensor 9 that sensing unit comprises sensor, and this ultrasonic sensor is piezoelectric sensor 10, and piezoelectric sensor frequency range is 70 ~ 150kHz.Preferably, described piezoelectric sensor frequency range is 90 ~ 120kHz; Sensing unit also comprises pulses of current sensor 11, uhf sensor 12 respectively.The frequency range of uhf sensor is 300 ~ 3000MHz.Preferably, described sensor is uhf sensor, and frequency range is 500 ~ 2500MHz.Various sensor bundles by sensing unit, and by inlaying between the housing of various sensor, make it form one, the end face of housing is connected with power module, and this power module is same provides power supply for each sensor.
Embodiment 2
As shown in Figure 1, transformer partial discharge on-line monitoring system, comprises diagnostic analysis unit 1, and described diagnostic analysis unit comprises ultrasound examination module 2, electric pulse detection module 3, ultra-high-frequency detection module 4.Different collected signal can be detected by different modules, make it possess multiple monitoring function.Collecting unit: Frequency Band Selection, High frequency amplification, the detecting way selection circuit that can control the power supply in sensing unit, different probe, the echo information of detected object inside is scanned and converts digital signal to, after further process, storage, then give diagnostic analysis unit; Diagnostic analysis unit: directly can connect display, judges, or by setting the parameter appraised and decided, obtaining corresponding parameter check by collecting unit between artificial, so judge whether qualified.Described diagnostic analysis unit is connected with communication unit 5, and described communication unit support is based on the network communication mode of optical fiber; Support power line carrier, PLC mode; Support of wireless communication.Address established by communication unit energy software, just can export data when receiving the machine address, directly can connect various single-chip microcomputer and use, realize software programming; Communication unit receives logarithmic output signal certificate to data acquisition unit.The receiver 6 that can receive uhf sensor is provided with in described communication unit.This communication unit is connected with several collecting units 7, each collecting unit is connected with again the sensing unit 8 that several are connected with power transformation device, this sensing unit is connected with the sensor that several are dissimilar.As; It is ultrasonic sensor 9 that sensing unit comprises sensor, and this ultrasonic sensor is piezoelectric sensor 10, and piezoelectric sensor frequency range is 150kHz.Preferably, described piezoelectric sensor frequency range is 120kHz; Sensing unit also comprises pulses of current sensor 11, uhf sensor 12 respectively.The frequency range of uhf sensor is 3000MHz.Preferably, described sensor is uhf sensor, and frequency range is 2500MHz.Various sensor bundles by sensing unit, and by inlaying between the housing of various sensor, make it form one, the end face of housing is connected with power module, and this power module is same provides power supply for each sensor.
Embodiment 3
As shown in Figure 1, transformer partial discharge on-line monitoring system, comprises diagnostic analysis unit 1, and described diagnostic analysis unit comprises ultrasound examination module 2, electric pulse detection module 3, ultra-high-frequency detection module 4.Different collected signal can be detected by different modules, make it possess multiple monitoring function.Collecting unit: Frequency Band Selection, High frequency amplification, the detecting way selection circuit that can control the power supply in sensing unit, different probe, the echo information of detected object inside is scanned and converts digital signal to, after further process, storage, then give diagnostic analysis unit; Diagnostic analysis unit: directly can connect display, judges, or by setting the parameter appraised and decided, obtaining corresponding parameter check by collecting unit between artificial, so judge whether qualified.Described diagnostic analysis unit is connected with communication unit 5, and described communication unit support is based on the network communication mode of optical fiber; Support power line carrier, PLC mode; Support of wireless communication.Address established by communication unit energy software, just can export data when receiving the machine address, directly can connect various single-chip microcomputer and use, realize software programming; Communication unit receives logarithmic output signal certificate to data acquisition unit.The receiver 6 that can receive uhf sensor is provided with in described communication unit.This communication unit is connected with several collecting units 7, each collecting unit is connected with again the sensing unit 8 that several are connected with power transformation device, this sensing unit is connected with the sensor that several are dissimilar.As; It is ultrasonic sensor 9 that sensing unit comprises sensor, and this ultrasonic sensor is piezoelectric sensor 10, and piezoelectric sensor frequency range is 100kHz.Preferably, described piezoelectric sensor frequency range is 100kHz; Sensing unit also comprises pulses of current sensor 11, uhf sensor 12 respectively.The frequency range of uhf sensor is 2500MHz.Preferably, described sensor is uhf sensor, and frequency range is 2000MHz.Various sensor bundles by sensing unit, and by inlaying between the housing of various sensor, make it form one, the end face of housing is connected with power module, and this power module is same provides power supply for each sensor.
Embodiment 4
As shown in Figure 1, transformer partial discharge on-line monitoring system, comprises diagnostic analysis unit 1, and described diagnostic analysis unit comprises ultrasound examination module 2, electric pulse detection module 3, ultra-high-frequency detection module 4.Different collected signal can be detected by different modules, make it possess multiple monitoring function.Collecting unit: Frequency Band Selection, High frequency amplification, the detecting way selection circuit that can control the power supply in sensing unit, different probe, the echo information of detected object inside is scanned and converts digital signal to, after further process, storage, then give diagnostic analysis unit; Diagnostic analysis unit: directly can connect display, judges, or by setting the parameter appraised and decided, obtaining corresponding parameter check by collecting unit between artificial, so judge whether qualified.Described diagnostic analysis unit is connected with communication unit 5, and described communication unit support is based on the network communication mode of optical fiber; Support power line carrier, PLC mode; Support of wireless communication.Address established by communication unit energy software, just can export data when receiving the machine address, directly can connect various single-chip microcomputer and use, realize software programming; Communication unit receives logarithmic output signal certificate to data acquisition unit.The receiver 6 that can receive uhf sensor is provided with in described communication unit.This communication unit is connected with several collecting units 7, each collecting unit is connected with again the sensing unit 8 that several are connected with power transformation device, this sensing unit is connected with the sensor that several are dissimilar.As; It is ultrasonic sensor 9 that sensing unit comprises sensor, and this ultrasonic sensor is piezoelectric sensor 10, and piezoelectric sensor frequency range is 140kHz.Preferably, described piezoelectric sensor frequency range is 110kHz; Sensing unit also comprises pulses of current sensor 11, uhf sensor 12 respectively.The frequency range of uhf sensor is 2500MHz.Preferably, described sensor is uhf sensor, and frequency range is 2400MHz.Various sensor bundles by sensing unit, and by inlaying between the housing of various sensor, make it form one, the end face of housing is connected with power module, and this power module is same provides power supply for each sensor.
The foregoing is only the preferred embodiment of invention, not in order to restriction invention, within all spirit in invention and principle, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in invention.
Claims (10)
1. transformer partial discharge on-line monitoring system, it is characterized in that, comprise diagnostic analysis unit, described diagnostic analysis unit is connected with communication unit, this communication unit is connected with several collecting units, each collecting unit is connected with again several sensing units be connected with power transformation device, this sensing unit is connected with several dissimilar sensors bundled, covers disposed on sensor has power module;
Collecting unit: Frequency Band Selection, High frequency amplification, the detecting way selection circuit that can control the power supply in sensing unit, different probe, the echo information of detected object inside is scanned and converts digital signal to, after further process, storage, then give diagnostic analysis unit;
Diagnostic analysis unit: directly can connect display, judges, or by setting the parameter appraised and decided, obtaining corresponding parameter check by collecting unit between artificial, so judge whether qualified.
2. transformer partial discharge on-line monitoring system according to claim 1, is characterized in that, described diagnostic analysis unit comprises ultrasound examination module, electric pulse detection module, ultra-high-frequency detection module.
3. transformer partial discharge on-line monitoring system according to claim 1 and 2, is characterized in that, described sensor comprises promising ultrasonic sensor, and this ultrasonic sensor is piezoelectric sensor.
4. transformer partial discharge on-line monitoring system according to claim 3, is characterized in that, it is 70 ~ 150kHz that described sensor includes piezoelectric sensor frequency range.
5. transformer partial discharge on-line monitoring system according to claim 4, is characterized in that, described piezoelectric sensor frequency range is 90 ~ 120kHz.
6. transformer partial discharge on-line monitoring system according to claim 5, is characterized in that, described sensor includes pulses of current sensor.
7. transformer partial discharge on-line monitoring system according to claim 6, is characterized in that, described sensor includes uhf sensor, and frequency range is 300 ~ 3000MHz.
8. the transformer partial discharge on-line monitoring system according to claim 6 or 7, is characterized in that, described sensor is uhf sensor, and frequency range is 500 ~ 2500MHz.
9. transformer partial discharge on-line monitoring system according to claim 8, is characterized in that, is provided with the receiver that can receive uhf sensor in described communication unit.
10. transformer partial discharge on-line monitoring system according to claim 9, is characterized in that, described communication unit support is based on the network communication mode of optical fiber; Support power line carrier, PLC mode; Support of wireless communication; Address established by communication unit energy software, just can export data when receiving the machine address, directly can connect various single-chip microcomputer and use, realize software programming; Communication unit receives logarithmic output signal certificate to data acquisition unit.
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| CN105242180A (en) * | 2015-08-31 | 2016-01-13 | 中国西电电气股份有限公司 | GIL/GIS discharge source detection and positioning apparatus and method |
| CN105258723A (en) * | 2015-09-18 | 2016-01-20 | 江健良 | High-voltage station detection device |
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| CN105333903A (en) * | 2015-11-09 | 2016-02-17 | 谢广鹏 | High-voltage power station detection device with rotation speed detector |
| CN105424085A (en) * | 2015-11-09 | 2016-03-23 | 邝嘉豪 | High-voltage station detection device |
| CN105424086A (en) * | 2015-11-09 | 2016-03-23 | 邝嘉豪 | High-sensitivity high-voltage power station detection device |
| CN107345993A (en) * | 2017-07-19 | 2017-11-14 | 河南职业技术学院 | A kind of electric equipment operation information monitoring system |
| CN109782112A (en) * | 2019-03-13 | 2019-05-21 | 国家电网有限公司 | A kind of transformer many reference amounts fault monitoring system and detection method |
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Application publication date: 20150527 |