JPH03257909A - Bushing with current transformer - Google Patents
Bushing with current transformerInfo
- Publication number
- JPH03257909A JPH03257909A JP2054968A JP5496890A JPH03257909A JP H03257909 A JPH03257909 A JP H03257909A JP 2054968 A JP2054968 A JP 2054968A JP 5496890 A JP5496890 A JP 5496890A JP H03257909 A JPH03257909 A JP H03257909A
- Authority
- JP
- Japan
- Prior art keywords
- bushing
- current transformer
- optical
- magnetic field
- field sensor
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 239000013307 optical fiber Substances 0.000 claims abstract description 11
- 239000004020 conductor Substances 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
この発明は、ブッシングを流れる電流を計測する変流器
が取付けられている変流器付ブッシングに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a bushing with a current transformer attached thereto for measuring the current flowing through the bushing.
［従来の技術］
第３図、第４図は、例えば実開昭６２−１４０７１２号
公報に記載された従来の変流器付ブッシングを示し、図
において、（１）はブッシング、（２）はこのブッシン
グを取付けるためのフランジ、（３）はブッシング（１
）に流れる電流を測定する変流器、（４）は変流器〈３
〉を受ける受は板、（５〉は変流器（３〉をフランジ（
２）に固定する締結部品、（６〉は変流器（３〉を取付
けるための変流器取付筒で、フランジ（２）に溶接等に
より接合されている。[Prior Art] Fig. 3 and Fig. 4 show a conventional bushing with a current transformer, which is described in, for example, Japanese Utility Model Application Publication No. 140712/1983, and in the figures, (1) is a bushing, and (2) is a The flange (3) for attaching this bushing is the bushing (1
), the current transformer (4) measures the current flowing through the current transformer <3
The receiver that receives the
The fastening part (6) fixed to 2) is a current transformer mounting tube for attaching the current transformer (3), and is joined to the flange (2) by welding or the like.
上記の構成により、ブッシング（１）にｔ流が流れると
、電磁誘導作用により電流の大きさに比例した電流が、
変流器（３〉に流れ、ブッシング（１）の電流が計測さ
れる。With the above configuration, when a current flows through the bushing (1), a current proportional to the magnitude of the current flows due to electromagnetic induction.
The current flows through the current transformer (3) and the current in the bushing (1) is measured.
［発明が解決しようとする課題］
従来の変流器付ブッシングは、以上のように構成されて
いるので、変流器を取付けるために、長さ７戸の変流器
取付筒が必要であり、そのため、ブッシング長さが長く
なり、重量も重く、高価となり、不経済であるなどの問
題点があった。[Problem to be solved by the invention] Since the conventional bushing with a current transformer is configured as described above, a current transformer mounting tube with a length of seven units is required to attach the current transformer. Therefore, there were problems such as the bushing being long, heavy, expensive, and uneconomical.
この発明は、上記のような問題点を解消するためになさ
れたもので、変流器取付筒を必要としない変流器付ブッ
シングを得ることを百的とする。This invention was made to solve the above-mentioned problems, and its object is to obtain a bushing with a current transformer that does not require a current transformer mounting tube.
［課題を解決するための手段］
この発明に係る変流器付ブッシングは、変流器を、光磁
界センサと光ファイバ、信号処理装置等で構成される光
変流器とし、光磁界センサをブッシングに内蔵したもの
である。[Means for Solving the Problems] A bushing with a current transformer according to the present invention uses a current transformer as an optical current transformer composed of an optical magnetic field sensor, an optical fiber, a signal processing device, etc., and uses an optical magnetic field sensor as an optical current transformer. It is built into the bushing.
［作 用〕
この発明においては、信号処理装置から光ファイバを経
て送られる光を、光センサが電流による磁界で光変調す
る。この変調光は光ファイバを経て信号処理装置に入力
され、信号処理してブッシングに流れる電流が計測され
る。[Function] In the present invention, the optical sensor optically modulates the light sent from the signal processing device through the optical fiber using a magnetic field generated by an electric current. This modulated light is input to a signal processing device via an optical fiber, where the signal is processed and the current flowing through the bushing is measured.
［実施例］
以下、この発明の一実施例を第１図、第２図について説
明する０図において、ブッシング（１）の導体を流れる
電流により発生する磁路内に光磁界センサ（３１）が配
置されている。（２）はブッシング取付用のフランジで
ある。光磁界センサ（３１〉はブッシング（１）に内蔵
されている。光ファイバ（３２ａ）（３２ｂ）は光磁界
センサ（３１）に光を送受信する。信号処理装置（３３
〉は発光部および受光部を備えている。[Example] Hereinafter, an embodiment of the present invention will be explained with reference to FIGS. 1 and 2. In FIG. It is located. (2) is a flange for mounting the bushing. The optical magnetic field sensor (31> is built into the bushing (1). The optical fibers (32a) (32b) transmit and receive light to the optical magnetic field sensor (31). The signal processing device (33
> is equipped with a light emitting section and a light receiving section.
以上の構成により、信号処理装置（３３）から光ファイ
バ（３２ｍ）を経て光磁界センサ（３１）へ光を供給す
ると、光磁界センサ（３１）はブッシング（１）を流れ
る電流により生じる磁界に比例して光を変調する。With the above configuration, when light is supplied from the signal processing device (33) to the optical magnetic field sensor (31) via the optical fiber (32 m), the optical magnetic field sensor (31) is proportional to the magnetic field generated by the current flowing through the bushing (1). to modulate the light.
この変調光を光ファイバ（３２ｂ）により信号処理装置
（３３〉に入力し、信号処理することにより、ブッシン
グ（１〉を流れる電流が計測される。This modulated light is input to a signal processing device (33>) via an optical fiber (32b) and subjected to signal processing, thereby measuring the current flowing through the bushing (1>).
なお、上記実施例では、ブッシングに光磁界センサのみ
を内蔵した例を示したが、ブッシングの導体の周囲にギ
ャップ付鉄心を設け、その鉄心のギャップ内に光磁界セ
ンサを配置し、鉄心と光磁界センサをブッシングに内蔵
してもよい。In the above embodiment, only the optical magnetic field sensor is built into the bushing, but an iron core with a gap is provided around the conductor of the bushing, and the optical magnetic field sensor is arranged within the gap of the iron core, so that the optical magnetic field sensor is connected to the iron core. The magnetic field sensor may be built into the bushing.
［発明の効果］
以上のように、この発明によれば、変流器を光変流器と
し、光磁界センナをブッシングに内蔵したので、従来の
変流器取付筒が不要となり、ブッシングが短かく、重量
も軽く、安価となる効果がある。[Effects of the Invention] As described above, according to the present invention, the current transformer is an optical current transformer, and the optical magnetic field sensor is built into the bushing, so the conventional current transformer mounting tube is no longer required, and the bushing can be shortened. Therefore, it has the effect of being light in weight and inexpensive.
第１図はこの発明の一実施例の概略立面図、第２図は第
１図のト１線に沿う平面での断面図、第３図は従来の変
流器付ブッシングの概略立面図、第４図は第３図のＷ−
Ｎ線に沿う平面での断面図である。
（１）・・ブッシング、（３１〉・・光磁界センサ、（
３２ａ）（３２ｂ） ・・光ファイバ、（３３）・、信
号処理装置。
なお、各図中、同一符号は同−又は相当部分を示す。Fig. 1 is a schematic elevational view of an embodiment of the present invention, Fig. 2 is a sectional view taken along line T1 in Fig. 1, and Fig. 3 is a schematic elevational view of a conventional bushing with a current transformer. Figure 4 is W- of Figure 3.
FIG. 3 is a cross-sectional view taken on a plane along the N line. (1)...Bushing, (31>...Optical magnetic field sensor, (
32a) (32b) Optical fiber, (33) Signal processing device. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (1)
計測する変流器が取付けられている変流器付ブッシング
において、 ブッシングの導体を流れる電流により発生する磁路内に
配置された光磁界センサと、この光磁界センサに光を送
受信する光ファイバと、この光ファイバへ光を発光およ
び受光する信号処理装置とからなる光変流器を備え、し
かも、前記光磁界センサを前記ブッシングに内蔵したこ
とを特徴とする変流器付ブッシング。[Claims] In a bushing with a current transformer, in which a current transformer is attached to the bushing to measure the current flowing through the conductor of the bushing, the current transformer is arranged in a magnetic path generated by the current flowing through the conductor of the bushing. an optical current transformer including a magnetic optical field sensor, an optical fiber that transmits and receives light to and from the optical magnetic field sensor, and a signal processing device that emits and receives light to and from the optical fiber; A bushing with a current transformer built into it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2054968A JPH03257909A (en) | 1990-03-08 | 1990-03-08 | Bushing with current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2054968A JPH03257909A (en) | 1990-03-08 | 1990-03-08 | Bushing with current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03257909A true JPH03257909A (en) | 1991-11-18 |
Family
ID=12985461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2054968A Pending JPH03257909A (en) | 1990-03-08 | 1990-03-08 | Bushing with current transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03257909A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1113277A1 (en) * | 1999-12-29 | 2001-07-04 | ABB T&D Technologies Ltd. | A bushing element for medium and high voltage applications |
| CN103700477A (en) * | 2013-12-20 | 2014-04-02 | 北京航天时代光电科技有限公司 | High-voltage primary conductor multi-turn all-fiber current transformer |
-
1990
- 1990-03-08 JP JP2054968A patent/JPH03257909A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1113277A1 (en) * | 1999-12-29 | 2001-07-04 | ABB T&D Technologies Ltd. | A bushing element for medium and high voltage applications |
| CN103700477A (en) * | 2013-12-20 | 2014-04-02 | 北京航天时代光电科技有限公司 | High-voltage primary conductor multi-turn all-fiber current transformer |
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