TWM478157U - Intelligent oil-filled transformer online discharge diagnosis and monitoring device - Google Patents

Intelligent oil-filled transformer online discharge diagnosis and monitoring device Download PDF

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Publication number
TWM478157U
TWM478157U TW102217827U TW102217827U TWM478157U TW M478157 U TWM478157 U TW M478157U TW 102217827 U TW102217827 U TW 102217827U TW 102217827 U TW102217827 U TW 102217827U TW M478157 U TWM478157 U TW M478157U
Authority
TW
Taiwan
Prior art keywords
sensing
diagnostic monitoring
type transformer
oil
unit
Prior art date
Application number
TW102217827U
Other languages
Chinese (zh)
Inventor
yao-guang Zhang
xin-ping Wang
Jin-Fa Huang
Original Assignee
Tatung Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tatung Co filed Critical Tatung Co
Priority to TW102217827U priority Critical patent/TWM478157U/en
Publication of TWM478157U publication Critical patent/TWM478157U/en

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Description

Intelligent oil type transformer online discharge diagnostic monitoring device
This creation is about a discharge diagnostic monitoring device, especially an intelligent oil-type transformer on-line discharge diagnostic monitoring device suitable for oil-type transformers.
Oil-type transformers are a large, closed and long-running transformer. Due to the long-term operation, the normal operation of the oil-type transformer is related to the safety of the entire set of parts and the surrounding environment.
On the other hand, oil-type transformers are closed-type transformers. During long-term operation, personnel cannot judge whether the oil-type transformer is abnormal or not by visual inspection. It needs to be turned on to monitor whether the oil-type transformer is faulty or not. Conduct long-term monitoring.
Therefore, in view of this, the creator of this case developed a smart oil-type transformer on-line discharge diagnostic monitoring device, which is non-invasive, can be installed outside the transformer, has high mobility and does not affect its operation, can be monitored, and can be viewed immediately. The oscilloscope records and analyzes the waveform, and can determine whether it is normal according to the spectrum analysis generated by the discharge characteristics of the oil transformer, can effectively measure the abnormal discharge signal, and can effectively locate the exact position of the abnormal discharge.
The main purpose of the present invention is to provide a smart oil-type transformer on-line discharge diagnostic monitoring device, comprising: a plurality of first sensing units attached to the side of an oil-type transformer; and a plurality of second sensing units, Attached to the power input line and the grounding line of the oil-type transformer; and a diagnostic monitoring unit connected to the plurality of first sensing units and the plurality of second sensing units for positioning an abnormal discharge signal s position.
Therefore, the intelligent oil-type transformer on-line discharge diagnostic monitoring device of the present invention can diagnose the abnormal discharge of the oil-type transformer by combining the plurality of first sensing units and the plurality of second sensing units.
In addition, when one of the plurality of second sensing units senses the glitch generated by the abnormal discharge signal, the time at which the peak amplitude of the spur wave occurs is set as the start time of the abnormal discharge signal. At the same time, the diagnostic monitoring unit starts to measure the position of the abnormal discharge signal, and determines that the plurality of first sensing units respectively sense the plurality of sensing times of the abnormal discharge signal, and respectively according to the starting time The time difference between the plurality of sensing times is calculated, thereby calculating the distance between the position of the abnormal discharge signal and each of the first sensing units, and the position of the abnormal discharge signal is located.
In addition, the diagnostic monitoring unit further includes a storage unit for recording information of the abnormal discharge signal.
Furthermore, the storage unit is a memory card.
In addition, the first sensing unit is ultrasonic (Acoustic Emission, AE) sensing unit.
Moreover, the sensing frequency of the first sensing unit ranges from 20 kHz to 1 MHz.
Further, the second sensing unit is an ultra high frequency (UHF) electromagnetic wave sensing unit.
Furthermore, the sensing frequency of the second sensing unit ranges from 10 MHz to 1 GHz.
The above summary and the following detailed description are exemplary in order to further illustrate the scope of the patent application of this creation. Other purposes and advantages related to this creation will be explained in the following description and schema.
1‧‧‧ oil transformer
2‧‧‧Diagnostic monitoring unit
3,31,32,33‧‧‧first sensing unit
4,41,42,43,44‧‧‧second sensing unit
Figure 1 is a schematic diagram of the on-line discharge diagnostic monitoring device of the intelligent oil-type transformer.
Figure 2 is a schematic diagram of the diagnostic diagnostic monitoring abnormal discharge signal.
FIG. 3 is a schematic diagram of the position of the abnormal positioning discharge signal in the present creation.
Please refer to FIG. 1 , which is a schematic diagram of an on-line discharge diagnostic monitoring device for a smart oil-type transformer, comprising: a plurality of first sensing units 3 , a plurality of second sensing units 4 , and a diagnostic monitoring unit 2 .
The plurality of first sensing units 3 may be an ultrasonic (AE) sensing unit and have a sensing frequency ranging from 20 kHz to 1 MHz, which is attached to an oil type. On the side of the transformer 1, the plurality of second sensing units 4 may be ultra-high frequency (UHF) electromagnetic wave sensing units and have a sensing frequency ranging from 10 MHz to 1 GHz, which is attached to the power input line of the oil transformer 1 And the grounding line, the diagnostic monitoring unit 2 is connected to the plurality of first sensing units 3 and the plurality of second sensing units 4, and starts measuring the abnormal discharge based on the start time of the abnormally discharged signal. And the diagnostic monitoring unit 2 can include a memory card for storing signal information of abnormal discharge.
Please refer to FIG. 2 together, which is a schematic diagram of the abnormal discharge of the creative diagnosis and monitoring, and FIG. 3 , which is a schematic diagram of the position of the abnormal positioning discharge signal for creating a plurality of second sensing units 41 , 42 , 43 , 44 . When one of the electromagnetic wave surges generated by an abnormal discharge signal is sensed, the time at which the peak of the sudden wave is set is the start time of the abnormal discharge signal. For example, when the second sensing unit 44 attached to the ground line of the oil-type transformer 1 senses that an abnormal discharge signal (surge in FIG. 2) occurs, the occurrence time of the peak of the glitch is set as the start time. T0, and the above-mentioned diagnostic monitoring unit 2 starts measuring the position of the X where the abnormal discharge occurs, since a plurality of first sensing units 31, 32, 33 are attached to different positions on the side of the oil-type transformer 1, and When the abnormal discharge is at a distance D1, d2, d3, the plurality of first sensing units 31, 32, 33 sense a plurality of sensing times t1, t2, t3 of the abnormal discharge signal, and According to the time difference from the starting time t0 to the plurality of sensing times t1, t2, t3 (t1-t0, t2-t0, t3-t0), and the speed v of the ultrasonic wave is used to calculate the abnormal discharge point X and The distance between each of the first sensing units 31, 32, 33 is d1=v(t1-t0), d2=v(t2-t0), d3=v(t3-t0), according to which the abnormality can be effectively located. The position of the X where the discharge occurred.
The above-described embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments.
1‧‧‧ oil transformer
2‧‧‧Diagnostic monitoring unit
3,31,32,33‧‧‧first sensing unit
4,41,42,43,44‧‧‧second sensing unit

Claims (9)

  1. An intelligent oil-type transformer on-line discharge diagnostic monitoring device comprises: a plurality of first sensing units attached to a side of an oil-type transformer; a plurality of second sensing units attached to the oil-type transformer The power input line and the ground line; and a diagnostic monitoring unit connect the plurality of first sensing units and the plurality of second sensing units for locating an abnormal discharge signal.
  2. The intelligent oil-type transformer line discharge diagnostic monitoring device according to claim 1, wherein the diagnostic monitoring unit senses an electromagnetic wave spur generated by the abnormal discharge signal, that is, a peak amplitude of the spurt occurs at that time. The time is set to the start time of the abnormal discharge signal, and the position of the abnormal discharge signal is measured.
  3. The intelligent oil-type transformer on-line discharge diagnostic monitoring device according to the second aspect of the invention, wherein the diagnostic monitoring unit determines that the plurality of first sensing units sense the plurality of sensing signals of the abnormal discharge signal. Time, and calculating the distance between the position of the abnormal discharge signal and each of the first sensing units according to the time difference from the start time to the plurality of sensing times, thereby locating the position of the abnormal discharge signal .
  4. The intelligent oil-type transformer on-line discharge diagnostic monitoring device of claim 1, wherein the diagnostic monitoring unit further comprises a storage unit for storing information of the abnormal discharge signal.
  5. The intelligent oil-type transformer line discharge diagnostic monitoring device according to claim 4, wherein the storage unit is a memory card.
  6. The intelligent oil-type transformer line discharge diagnostic monitoring device according to claim 1, wherein the first sensing unit is an ultrasonic sensing unit.
  7. The intelligent oil-type transformer line discharge diagnostic monitoring device according to claim 6, wherein the sensing frequency of the first sensing unit ranges from 20 kHz to 1 MHz.
  8. The intelligent oil-type transformer line discharge diagnostic monitoring device according to claim 1, wherein the second sensing unit is an ultra-high frequency electromagnetic wave sensing unit.
  9. The intelligent oil-type transformer line discharge diagnostic monitoring device according to claim 8, wherein the sensing frequency of the second sensing unit ranges from 10 MHz to 1 GHz.
TW102217827U 2013-09-24 2013-09-24 Intelligent oil-filled transformer online discharge diagnosis and monitoring device TWM478157U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW102217827U TWM478157U (en) 2013-09-24 2013-09-24 Intelligent oil-filled transformer online discharge diagnosis and monitoring device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW102217827U TWM478157U (en) 2013-09-24 2013-09-24 Intelligent oil-filled transformer online discharge diagnosis and monitoring device
CN201410101743.8A CN104459482A (en) 2013-09-24 2014-03-19 Intelligent oil-filled transformer online discharge diagnosis and monitoring device

Publications (1)

Publication Number Publication Date
TWM478157U true TWM478157U (en) 2014-05-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
TW102217827U TWM478157U (en) 2013-09-24 2013-09-24 Intelligent oil-filled transformer online discharge diagnosis and monitoring device

Country Status (2)

Country Link
CN (1) CN104459482A (en)
TW (1) TWM478157U (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6080207A (en) * 1983-10-07 1985-05-08 Toshiba Corp Protective device of oil-immersed electric apparatus
JP2831042B2 (en) * 1989-07-24 1998-12-02 中部電力株式会社 Partial discharge monitoring device for oil-immersed transformer
CN102253127B (en) * 2011-07-01 2014-01-29 西安交通大学 L-shaped ultrasonic array sensor for partial discharge location of transformer
CN102435922A (en) * 2011-10-26 2012-05-02 上海交通大学 Acoustic-electric combined detection system and positioning method for GIS (Gas Insulated Switchgear) local discharge
CN102866377B (en) * 2012-09-17 2016-03-09 中国电力科学研究院 The detection check system and method for the online monitoring assembly of transformer partial discharge and location

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CN104459482A (en) 2015-03-25

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