JPH07198774A - Device for detecting partial discharge electromagnetic wave - Google Patents
Device for detecting partial discharge electromagnetic waveInfo
- Publication number
- JPH07198774A JPH07198774A JP34947193A JP34947193A JPH07198774A JP H07198774 A JPH07198774 A JP H07198774A JP 34947193 A JP34947193 A JP 34947193A JP 34947193 A JP34947193 A JP 34947193A JP H07198774 A JPH07198774 A JP H07198774A
- Authority
- JP
- Japan
- Prior art keywords
- partial discharge
- discharge electromagnetic
- electromagnetic wave
- terminal
- antenna
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 3
- 230000006866 deterioration Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000005856 abnormality Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、変電所内の機器の異常
診断をおこなうための部分放電電磁波検出装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partial discharge electromagnetic wave detecting device for diagnosing abnormalities in equipment in a substation.
【０００２】[0002]
【従来の技術】機器のブッシングや気中導体を介して発
信する部分放電電磁波を、機器外部に設置した受信アン
テナで検出している。その際、受信アンテナを複数設置
することにより部分放電電磁波の到達時間差から異常機
器の特定を行っている。2. Description of the Related Art Partial discharge electromagnetic waves transmitted through a bushing of a device or an air conductor are detected by a receiving antenna installed outside the device. At that time, by installing a plurality of receiving antennas, the abnormal device is identified from the arrival time difference of the partial discharge electromagnetic waves.
【０００３】[0003]
【発明が解決しようとする課題】部分放電電磁波の到達
時間差から部分放電電磁波の発信している機器を特定す
るために複数の受信アンテナを設置する必要がある。It is necessary to install a plurality of receiving antennas in order to identify the device emitting the partial discharge electromagnetic wave from the arrival time difference of the partial discharge electromagnetic wave.
【０００４】本発明では、１基の受信アンテナにより部
分放電電磁波を発信している異常機器を明確に特定でき
るようにする。According to the present invention, it is possible to clearly identify an abnormal device emitting a partial discharge electromagnetic wave by using one receiving antenna.
【０００５】[0005]
【課題を解決するための手段】変電所内の各機器の端子
または、端子の近傍に、当該機器内部の絶縁劣化にとも
ない発生する部分放電電磁波を送信する機器ごとに長さ
の異なった送信アンテナと、機器から離れた位置に設置
された１基の広帯域検出感度を有する受信アンテナとを
備え、この受信アンテナで受信された部分放電電磁波の
周波数を分析する周波数分析器を設置する。[Summary of the Invention] A transmission antenna with a different length is provided near the terminal of each device in a substation or in the vicinity of the terminal for transmitting a partial discharge electromagnetic wave generated due to deterioration of insulation inside the device. A frequency analysis device is provided, which is provided with a receiving antenna having a wide band detection sensitivity installed at a position distant from the device, and which analyzes the frequency of the partial discharge electromagnetic wave received by the receiving antenna.
【０００６】[0006]
【作用】上記のように構成された、本発明の部分放電電
磁波検出装置においては、変電所内の機器異常の絶縁劣
化にともない発生する部分放電により、各機器に取付け
られた送信アンテナの長さに応じた周波数分布をもつ部
分放電電磁波が送信アンテナから送信されるので、１基
の受信アンテナで受信された部分放電電磁波の周波数を
分析することにより、部分放電が発生している異常機器
を特定することができる。In the partial discharge electromagnetic wave detecting device of the present invention configured as described above, the length of the transmitting antenna attached to each device is reduced due to the partial discharge generated due to the insulation deterioration of the device abnormality in the substation. Since the partial discharge electromagnetic wave having a corresponding frequency distribution is transmitted from the transmitting antenna, the abnormal equipment in which the partial discharge is occurring is identified by analyzing the frequency of the partial discharge electromagnetic wave received by one receiving antenna. be able to.
【０００７】[0007]
【実施例】図１は本発明における部分放電電磁波検出装
置の一例で、変圧器１０とＧＣＢ２０が気中導体５で接
続されている場合の例である。変圧器１０のブッシング
１１の端子１３に長さＬ１の送信アンテナ１２を、ま
た、ＧＣＢ２０のブッシング２１ｂの端子２３に長さＬ
２の送信アンテナ２２を設置する。FIG. 1 is an example of a partial discharge electromagnetic wave detecting device according to the present invention, in which a transformer 10 and a GCB 20 are connected by an air conductor 5. The transmission antenna 12 having a length L1 is connected to the terminal 13 of the bushing 11 of the transformer 10, and the length L is connected to the terminal 23 of the bushing 21b of the GCB 20.
Two transmitting antennas 22 are installed.
【０００８】送信アンテナから発信される部分放電電磁
波の周波数ｆは、送信アンテナの長さＬとの間にｆ＝ｋ
・Ｌの関係を有する。ここでｋは定数である。The frequency f of the partial discharge electromagnetic wave emitted from the transmitting antenna is f = k between the frequency f and the length L of the transmitting antenna.
・ Has an L relationship. Here, k is a constant.
【０００９】ここで、変圧器１０の内部で部分放電が発
生した場合、送信アンテナ１２から、送信アンテナ１２
の長さＬ１に応じて周波数ｆ１の部分放電電磁波が発生
する。Here, when a partial discharge occurs inside the transformer 10, the transmitting antenna 12 moves from the transmitting antenna 12 to the transmitting antenna 12.
A partial discharge electromagnetic wave having a frequency f1 is generated according to the length L1 of the.
【００１０】また、ＧＣＢ２０の内部で部分放電が発生
した場合、送信アンテナ２２から、送信アンテナ２２の
長さＬ２に応じて周波数ｆ２の部分放電電磁波が発生す
る。これらの部分放電電磁波を受信アンテナ１により受
信し、周波数分析器２により分析すると図２に示すよう
な周波数分布が得られる。従って、もし周波数分布ｆ１
のみが検出されれば変圧器１０が、周波数分布ｆ２のみ
が検出されればＧＣＢ２０が、また周波数分布ｆ１とｆ
２が同時に検出されれば変圧器１０、ＧＣＢ２０が、そ
れぞれ機器異常であると判断できる。When a partial discharge occurs inside the GCB 20, a partial discharge electromagnetic wave having a frequency f2 is generated from the transmitting antenna 22 according to the length L2 of the transmitting antenna 22. When these partial discharge electromagnetic waves are received by the receiving antenna 1 and analyzed by the frequency analyzer 2, a frequency distribution as shown in FIG. 2 is obtained. Therefore, if the frequency distribution f1
If only the frequency distribution f2 is detected, the transformer 10 is detected. If only the frequency distribution f2 is detected, the GCB20 is detected.
If 2 is detected at the same time, it can be determined that the transformer 10 and the GCB 20 are device abnormalities.
【００１１】[0011]
【発明の効果】本発明によれば、変電所内の機器異常を
簡単な装置により検出し、異常機器の特定が明確にな
る。According to the present invention, the abnormality of the equipment in the substation is detected by a simple device, and the identification of the abnormal equipment becomes clear.
【図１】この発明の部分放電検出装置を配変クラスオ−
プンタイプ変電所に適用した一例を示す図である。FIG. 1 is a schematic diagram showing a partial discharge detecting device according to the present invention.
It is a figure showing an example applied to a Pun type substation.
【図２】この発明の周波数分析器による部分放電電磁波
の周波数分布の一例を示す図である。FIG. 2 is a diagram showing an example of frequency distribution of partial discharge electromagnetic waves by the frequency analyzer of the present invention.
１ 受信アンテナ ２ 周波数分析器 １０ 変圧器 ２０ ＧＣＢ ５ 気中導体 １２、２２ 送信アンテナ １３、２３ 端子 1 receiving antenna 2 frequency analyzer 10 transformer 20 GCB 5 air conductor 12, 22 transmitting antenna 13, 23 terminal
Claims (1)
に取り付けた、当該機器内部の絶縁劣化にともない発生
する部分放電電磁波を送信する機器ごとに長さの異なっ
た送信アンテナと、 機器から離れた位置に設置された１基の広帯域検出感度
を有する受信アンテナとを備え、この受信アンテナで受
信された部分放電電磁波を周波数分析する周波数分析器
からなる部分放電電磁波検出装置。1. A transmitting antenna, which is attached to a terminal of each device in a substation or in the vicinity of the terminal, and which has a different length for each device that transmits a partial discharge electromagnetic wave generated due to deterioration of insulation inside the device, and from the device. A partial discharge electromagnetic wave detection device comprising: a receiving antenna having a wide band detection sensitivity installed at a distant position; and a frequency analyzer for frequency-analyzing a partial discharge electromagnetic wave received by the receiving antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34947193A JPH07198774A (en) | 1993-12-28 | 1993-12-28 | Device for detecting partial discharge electromagnetic wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34947193A JPH07198774A (en) | 1993-12-28 | 1993-12-28 | Device for detecting partial discharge electromagnetic wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07198774A true JPH07198774A (en) | 1995-08-01 |
Family
ID=18403976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34947193A Pending JPH07198774A (en) | 1993-12-28 | 1993-12-28 | Device for detecting partial discharge electromagnetic wave |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07198774A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006329636A (en) * | 2005-05-23 | 2006-12-07 | Mitsubishi Electric Corp | Partial discharge detector, and partial discharge testing method |
| JP2008145301A (en) * | 2006-12-11 | 2008-06-26 | Kansai Electric Power Co Inc:The | Partial discharge detection method and detector |
-
1993
- 1993-12-28 JP JP34947193A patent/JPH07198774A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006329636A (en) * | 2005-05-23 | 2006-12-07 | Mitsubishi Electric Corp | Partial discharge detector, and partial discharge testing method |
| JP2008145301A (en) * | 2006-12-11 | 2008-06-26 | Kansai Electric Power Co Inc:The | Partial discharge detection method and detector |
| JP4758878B2 (en) * | 2006-12-11 | 2011-08-31 | 関西電力株式会社 | Partial discharge detector |
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