JPH07191062A - Optical voltage measuring instrument - Google Patents
Optical voltage measuring instrumentInfo
- Publication number
- JPH07191062A JPH07191062A JP5347014A JP34701493A JPH07191062A JP H07191062 A JPH07191062 A JP H07191062A JP 5347014 A JP5347014 A JP 5347014A JP 34701493 A JP34701493 A JP 34701493A JP H07191062 A JPH07191062 A JP H07191062A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- conductor
- ring
- optical
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 32
- 239000004020 conductor Substances 0.000 claims abstract description 35
- 239000013307 optical fiber Substances 0.000 claims abstract description 11
- 125000006850 spacer group Chemical group 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0356—Mounting of monitoring devices, e.g. current transformers
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガス絶縁開閉装置に設
置する光学式電圧測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical voltage measuring device installed in a gas insulated switchgear.
【０００２】[0002]
【従来の技術】従来ガス絶縁開閉装置において電圧を測
定するには、高電圧導体の電圧を巻線型変圧器により直
接計測する直接計測型電圧測定装置と、高電圧導体と接
地間に中間電極および分圧コンデンサを接続することに
より分圧された電圧を巻線型変圧器または光電圧検出部
の電圧検出装置により計測する分圧計測型電圧測定装置
とがある。2. Description of the Related Art Conventionally, to measure voltage in a gas-insulated switchgear, a direct-measuring-type voltage measuring device that directly measures the voltage of a high-voltage conductor with a wire-wound transformer, and an intermediate electrode between the high-voltage conductor and ground. There is a voltage division measuring type voltage measuring device that measures a voltage divided by connecting a voltage dividing capacitor by a winding transformer or a voltage detecting device of an optical voltage detecting unit.
【０００３】直接計測型電圧測定装置は、ガス絶縁開閉
装置内に絶縁スペ−サを介してＳＦ6 ガスを充填した密
閉容器を設け、その密閉容器内に巻線型変圧器を設置す
るとともに、高電圧導体を引き込み、その電圧を測定す
る電圧測定装置である。A direct measurement type voltage measuring device is provided with a hermetically sealed container filled with SF 6 gas through an insulating spacer in a gas insulated switchgear, and a winding type transformer is installed in the hermetically sealed container. It is a voltage measuring device that draws in a voltage conductor and measures the voltage.
【０００４】また分圧計測型電圧測定装置は、ガス絶縁
開閉装置内に絶縁スペ−サを介してＳＦ6 ガスを充填し
た密閉容器を設け、その密閉容器内に高電圧導体を引き
込み、かつその高電圧導体と密閉容器の間に中間電極を
設け、さらに中間電極から密閉容器外に導線を引き出
し、この導線に直列に片側接地した分圧コンデンサを接
続するとともに、その分圧コンデンサと並列に巻線型変
圧器または光電圧センサから成る電圧検出部を設置し、
その電圧検出部に印加された電圧を計測し、高電圧導体
と中間電極の間の静電容量、中間電極と密閉容器との静
電容量、分圧コンデンサの静電容量、および電圧検出部
の静電容量により分圧された被計測電圧を換算する電圧
測定装置である。Further, the partial pressure measuring type voltage measuring device is provided with a hermetically sealed container filled with SF 6 gas through an insulating spacer in a gas insulated switchgear, and a high voltage conductor is drawn into the hermetically sealed container, and An intermediate electrode is provided between the high-voltage conductor and the airtight container, and a conductor is drawn from the intermediate electrode to the outside of the airtight container.A voltage divider capacitor grounded on one side is connected in series with this conductor wire and wound in parallel with the voltage divider capacitor. Install a voltage detection unit consisting of a linear transformer or optical voltage sensor,
The voltage applied to the voltage detector is measured, and the capacitance between the high voltage conductor and the intermediate electrode, the capacitance between the intermediate electrode and the closed container, the capacitance of the voltage dividing capacitor, and the voltage detector It is a voltage measuring device that converts a measured voltage divided by an electrostatic capacitance.
【０００５】[0005]
【発明が解決しようとする課題】しかし、従来の直接計
測型電圧測定装置は、被計測電圧が高い場合、導体と巻
線型変圧器との間の絶縁距離を確保するため巻線型変圧
器およびそれを収納する密閉容器が大きくなるという欠
点がある。However, the conventional direct-measuring-type voltage measuring device and the winding-type transformer for securing the insulation distance between the conductor and the winding-type transformer when the voltage to be measured is high. There is a drawback that the closed container for accommodating is large.
【０００６】また分圧計測型電圧測定装置の場合、中間
電極を密閉容器内に設置し、分圧コンデンサおよび電圧
検出部を密閉容器外に設置して、それぞれを導線で接続
する必要がある。そのため、導線の長さに依存した静電
容量により計測値に誤差を生じるという欠点がある。Further, in the case of the partial pressure measuring type voltage measuring device, it is necessary to install the intermediate electrode inside the hermetically sealed container, install the voltage dividing capacitor and the voltage detecting portion outside the hermetically sealed container, and connect them to each other with a conductive wire. Therefore, there is a drawback that an error occurs in the measured value due to the electrostatic capacitance depending on the length of the conducting wire.
【０００７】そこで本発明は、ガス絶縁開閉装置におけ
る電圧測定装置の小型軽量化をするとともに計測精度を
向上させることを目的としたものである。Therefore, the present invention has an object to reduce the size and weight of a voltage measuring device in a gas insulated switchgear and to improve the measurement accuracy.
【０００８】[0008]
【課題を解決するための手段】本発明では、密閉容器内
の高電圧導体を支持する外縁に金属フランジを有する絶
縁スペ−サ内に、高電圧導体を周回する円形の中間リン
グと、中間リングと同心円上であり、中間リングを周回
するシ−ルドリングと、中間リングとシ−ルドリングの
間に設置した光電圧センサと、中間リングと光電圧セン
サとを接続する導線と、シ−ルドリングと光電圧センサ
とを接続する導線と、シ−ルドリングと絶縁スペ−サの
金属フランジとを接続する導線と、金属フランジを貫通
して光電圧センサに接続する光ファイバと、を埋め込
み、密閉容器の外部に設置して、前記光ファイバを介し
て前記光電圧センサに接続し、この光電圧センサからの
光信号を処理する信号処理部を備える。SUMMARY OF THE INVENTION According to the present invention, a circular intermediate ring that encircles a high voltage conductor and an intermediate ring in an insulating spacer having a metal flange on an outer edge for supporting the high voltage conductor in a closed container. And a shield ring that is concentric with the intermediate ring, an optical voltage sensor installed between the intermediate ring and the shield ring, a conductor connecting the intermediate ring and the optical voltage sensor, the shield ring and the optical ring. The conductor for connecting the voltage sensor, the conductor for connecting the shield ring and the metal flange of the insulating spacer, and the optical fiber for penetrating the metal flange and connecting to the optical voltage sensor are embedded, and the outside of the closed container is sealed. And a signal processing unit that is connected to the optical voltage sensor via the optical fiber and processes an optical signal from the optical voltage sensor.
【０００９】[0009]
【作用】ガス絶縁開閉装置内の高電圧導体を支持する絶
縁スペ−サ内に中間リングを埋め込むことにより、中間
リングとシ−ルドリング間における静電分圧により電圧
が発生する。そこで中間リング、シ−ルドリングおよび
光電圧検出部を埋め込むことにより、被計測電圧を計測
するための密閉容器が不要になる。By embedding the intermediate ring in the insulating spacer supporting the high voltage conductor in the gas insulated switchgear, a voltage is generated by electrostatic partial pressure between the intermediate ring and the shield ring. Therefore, by embedding the intermediate ring, the shield ring, and the photovoltage detector, a closed container for measuring the measured voltage becomes unnecessary.
【００１０】また、中間リングとシ−ルドリングの間に
光電圧検出部を埋め込むことにより、光電圧センサに接
続するための導線が短くでき、光ファイバにより信号を
引き出すので、外部での導線の引き回しがなく静電容量
の変化を受けない。Further, by embedding the photovoltage detector between the intermediate ring and the shield ring, the conductor wire for connecting to the photovoltage sensor can be shortened and the signal can be extracted by the optical fiber. There is no change in capacitance.
【００１１】[0011]
【実施例】図１は、本発明の実施例で、ガス絶縁装置の
高電圧導体１は、ＳＦ6 ガス５が充填された密閉容器６
内で金属フランジ２とモ−ルド樹脂３によって構成され
た絶縁スペ−サ４により、支持される。このモ−ルド樹
脂３内に、高電圧導体１を周回するシ−ルドリング７
と、シ−ルドリング７と高電圧導体１の間で高電圧導体
１を周回する中間リング９と、中間リング９とシ−ルド
リング７の間に位置する光電圧センサ１０と、シ−ルド
リング７と中間リング９をそれぞれ光電圧センサ１０に
接続する導線８ｂおよび導線８ｃとシ−ルドリング７と
金属フランジ２を接続する導線８ａと金属フランジ２を
貫通して光電圧センサ１０に接続する光ファイバ１１を
埋め込む。信号処理部１２は、密閉容器６の外部に設置
し、光ファイバ１１を介して光電圧センサ１０と接続す
る。金属フランジ２と密閉容器６は大地に接続され、シ
−ルドリング７は、大地電位となる。EXAMPLE FIG. 1 shows an example of the present invention, in which a high-voltage conductor 1 of a gas insulation device is a hermetically sealed container 6 filled with SF 6 gas 5.
It is supported inside by an insulating spacer 4 constituted by a metal flange 2 and a mold resin 3. A shield ring 7 that surrounds the high-voltage conductor 1 is provided in the mold resin 3.
An intermediate ring 9 that surrounds the high-voltage conductor 1 between the shield ring 7 and the high-voltage conductor 1, an optical voltage sensor 10 located between the intermediate ring 9 and the shield ring 7, and a shield ring 7. An optical fiber 11 for connecting the intermediate ring 9 to the optical voltage sensor 10 is connected to the optical voltage sensor 10 by passing through the conductive wire 8b and the conductive wire 8c, the shield ring 7 and the conductive wire 8a connecting the metal flange 2 and the metallic flange 2, respectively. Embed. The signal processing unit 12 is installed outside the closed container 6 and is connected to the optical voltage sensor 10 via the optical fiber 11. The metal flange 2 and the closed container 6 are connected to the ground, and the shield ring 7 is at the ground potential.
【００１２】光電圧センサ１０には、中間リング９と大
地間の電圧が印加される。光電圧センサ１０は、電気素
子効果により印加された電圧を光信号に変換する。その
光信号は、光ファイバ１１により密閉容器６の外部に設
置された信号処理部１２に送られ信号処理部１２で、電
気信号に変換されたあと、電圧に換算される。高電圧導
体１の大地間電圧は、中間リング９と大地間と高電圧導
体１と中間リング９間とのコンデンサ分圧で換算され
る。A voltage between the intermediate ring 9 and the ground is applied to the optical voltage sensor 10. The optical voltage sensor 10 converts the voltage applied by the electric element effect into an optical signal. The optical signal is sent by an optical fiber 11 to a signal processing unit 12 installed outside the hermetically sealed container 6, converted into an electric signal by the signal processing unit 12, and then converted into a voltage. The earth-to-earth voltage of the high-voltage conductor 1 is converted by the capacitor partial voltage between the intermediate ring 9 and the earth and between the high-voltage conductor 1 and the intermediate ring 9.
【００１３】[0013]
【発明の効果】以上のような構成によれば、被計測電圧
を計測するための密閉容器が不要になり電圧検出装置を
小型軽量化することができる。According to the above structure, a closed container for measuring the voltage to be measured is not required, and the voltage detection device can be made compact and lightweight.
【００１４】また、中間リングとシ−ルドリング間の電
圧測定できるよう光電圧検出部を埋め込むことにより、
光電圧検出部に接続するための導線が短くでき、光ファ
イバにより信号を引き出すので、外部での導線の引き回
しがなく静電容量の変化を受けないため計測精度を向上
させることができる。Further, by embedding an optical voltage detector so that the voltage between the intermediate ring and the shield ring can be measured,
Since the lead wire for connecting to the photovoltage detector can be shortened and the signal is drawn out by the optical fiber, the lead wire is not routed outside and the capacitance is not changed, so that the measurement accuracy can be improved.
【図１】本発明の実施例を示し（Ａ）は軸方向の断面
図、（Ｂ）は径方向の断面図である。1A and 1B show an embodiment of the present invention, in which FIG. 1A is an axial sectional view and FIG. 1B is a radial sectional view.
１ 高電圧導体 ２ 金属フランジ ３ モ−ルド樹脂 ４ 絶縁スペ−サ ５ ＳＦ6 ガス ６ 密閉容器 ７ シ−ルドリング ８ａ 導線 ８ｂ 導線 ８ｃ 導線 ９ 中間リング １０ 光電圧センサ １１ 光ファイバ １２ 信号処理部1 High Voltage Conductor 2 Metal Flange 3 Mold Resin 4 Insulation Spacer 5 SF 6 Gas 6 Sealed Container 7 Shield Ring 8a Conductor 8b Conductor 8c Conductor 9 Intermediate Ring 10 Optical Voltage Sensor 11 Optical Fiber 12 Signal Processor
Claims (1)
に金属フランジを有する絶縁スペ−サ内に、高電圧導体
を周回する円形の中間リングと、中間リングと同心円上
であり、中間リングを周回するシ−ルドリングと、中間
リングとシ−ルドリングの間に設置した光電圧センサ
と、中間リングと光電圧センサを接続する導線と、シ−
ルドリングと光電圧センサを接続する導線と、シ−ルド
リングと絶縁スペ−サの金属フランジとを接続する導線
と、金属フランジを貫通して光電圧センサに接続する光
ファイバを埋め込み、密閉容器の外部して前記光ファイ
バを介して前記光電圧センサに接続この光電圧センサか
らの光信号を処理する信号処理部を備えた光学式電圧測
定装置。1. A circular intermediate ring that circulates the high-voltage conductor in an insulating spacer having a metal flange on an outer edge that supports the high-voltage conductor in a closed container, and a concentric circle with the intermediate ring. A shield ring that circulates around, an optical voltage sensor installed between the intermediate ring and the shield ring, a lead wire connecting the intermediate ring and the optical voltage sensor, and a shield.
The conductor connecting the shield ring and the optical voltage sensor, the conductor connecting the shield ring and the metal flange of the insulation spacer, and the optical fiber that penetrates the metal flange and connects to the optical voltage sensor are embedded inside the sealed container. An optical voltage measuring device provided with a signal processing unit for processing an optical signal from the optical voltage sensor connected to the optical voltage sensor via the optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5347014A JP2970375B2 (en) | 1993-12-27 | 1993-12-27 | Optical voltage measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5347014A JP2970375B2 (en) | 1993-12-27 | 1993-12-27 | Optical voltage measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07191062A true JPH07191062A (en) | 1995-07-28 |
| JP2970375B2 JP2970375B2 (en) | 1999-11-02 |
Family
ID=18387339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5347014A Expired - Fee Related JP2970375B2 (en) | 1993-12-27 | 1993-12-27 | Optical voltage measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2970375B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102812368A (en) * | 2010-03-19 | 2012-12-05 | 株式会社日立制作所 | Optical-fiber-containing insulating spacer |
| JP7224567B1 (en) * | 2022-09-01 | 2023-02-17 | 三菱電機株式会社 | gas insulated equipment |
-
1993
- 1993-12-27 JP JP5347014A patent/JP2970375B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102812368A (en) * | 2010-03-19 | 2012-12-05 | 株式会社日立制作所 | Optical-fiber-containing insulating spacer |
| US8847084B2 (en) | 2010-03-19 | 2014-09-30 | Hitachi, Ltd. | Insulating spacer with built-in optical fiber |
| JP7224567B1 (en) * | 2022-09-01 | 2023-02-17 | 三菱電機株式会社 | gas insulated equipment |
| WO2024047851A1 (en) * | 2022-09-01 | 2024-03-07 | 三菱電機株式会社 | Gas insulated apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2970375B2 (en) | 1999-11-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |