JPH0352829B2 - - Google Patents
Info
- Publication number
- JPH0352829B2 JPH0352829B2 JP58097157A JP9715783A JPH0352829B2 JP H0352829 B2 JPH0352829 B2 JP H0352829B2 JP 58097157 A JP58097157 A JP 58097157A JP 9715783 A JP9715783 A JP 9715783A JP H0352829 B2 JPH0352829 B2 JP H0352829B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- electrode
- shield electrode
- electro
- conductor
- 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.)
- Expired - Lifetime
Links
- 239000004020 conductor Substances 0.000 claims description 26
- 239000003990 capacitor Substances 0.000 claims description 24
- 230000000694 effects Effects 0.000 claims description 15
- 230000003287 optical effect Effects 0.000 claims description 9
- 239000012212 insulator Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Description
【発明の詳細な説明】
この発明はガス絶縁電気機器用光学式電圧変成
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical voltage converter for gas insulated electrical equipment.
ガス絶縁電気機器用光学式電圧変成装置は、ポ
ツケルス素子等の電気光学効果素子を用いて線路
の電圧を検出するものである。従来、第１図のよ
うに高圧導体１に接近して大地電位部２との間に
分圧電極３を絶縁配置し、高圧導体１と分圧電極
３との間にポツケルス素子４を接続し、ポツケル
ス素子４の一端に光ケーブル（図示省略）を介し
て光を供給し、ポツケルス素子４の他端からポツ
ケルス素子４に加わつた電圧に比例した光量の光
を得、光ケーブル（図示省略）を介して光−電気
変換器により電気信号に変換するように構成して
いた。 An optical voltage converter for gas-insulated electric equipment detects the voltage of a line using an electro-optic effect element such as a Pockels element. Conventionally, as shown in FIG. 1, a voltage dividing electrode 3 is placed close to the high voltage conductor 1 and insulated between it and the earth potential part 2, and a Pockels element 4 is connected between the high voltage conductor 1 and the voltage dividing electrode 3. , light is supplied to one end of the Pockels element 4 via an optical cable (not shown), and light of an amount proportional to the voltage applied to the Pockels element 4 is obtained from the other end of the Pockels element 4, and the light is supplied via the optical cable (not shown). The signal was then converted into an electrical signal using an optical-to-electrical converter.
ところで、このポツケルス素子４の定格電圧は
ポツケルス素子４の精度やポツケルス素子４を使
用する電圧変成装置の実用面から、数百ボルト程
度が実用化され、そのキヤパシタンスは１０pF
内外となつている。しかしながら、ポツケルス素
子４を種々の電圧階級の電圧変成装置に使用する
場合、および高圧導体１と大地電位部２との寸法
設定が種々異なるものに使用する場合、つぎのよ
うな対応が必要であり、そのため工業化に支障が
あつた。すなわち、
(1) ポツケルス素子４の定格電圧およびそのキヤ
パシタンスを前記各ニーズに応じて各種用意す
る必要があり、高価になる。 By the way, the rated voltage of the Pockels element 4 is approximately several hundred volts due to the accuracy of the Pockels element 4 and the practical aspects of the voltage transformer using the Pockels element 4, and its capacitance is 10 pF.
It is inside and out. However, when using the Pockels element 4 in voltage transformers of various voltage classes, and when using it in devices where the dimensions of the high voltage conductor 1 and the ground potential section 2 are variously different, the following measures are required. , which hindered industrialization. That is, (1) It is necessary to prepare various rated voltages and capacitances of the Pockels element 4 according to each of the above-mentioned needs, which increases the cost.
(2) ポツケルス素子４を共通とした場合、分圧電
極３の寸法を前記ニーズに応じて各種寸法に設
定する必要があり、分圧電極３を共用できず、
そのため高価になる。(2) If the Pockels element 4 is shared, it is necessary to set the dimensions of the voltage dividing electrode 3 to various sizes according to the above-mentioned needs, and the voltage dividing electrode 3 cannot be shared.
Therefore, it becomes expensive.
(3) ポツケルス素子４の定格を実用可能な範囲で
対応させた場合、分圧電極３と高圧導体１間お
よび分圧電極３と大地電位部２間の分圧比の関
係から、分圧電極３の寸法があまりに小さくな
ると、分圧電極３と大地電位部２間のキヤパシ
タンCsのばらつきが大きくなり、電圧変成装
置の誤差が大きくなつて精度が低下する。(3) When the rating of the Pockels element 4 is matched within a practical range, the voltage dividing electrode 3 If the dimension of is too small, the variation in the capacitance Cs between the voltage dividing electrode 3 and the ground potential section 2 will increase, the error of the voltage transformation device will increase, and the accuracy will decrease.
したがつて、この発明の目的は、各種電圧階級
および分圧電極と大地電位部間の各種寸法に電気
光学効果素子および分圧電極を共用でき、簡単か
つ安価に実現でき、しかも計測精度を向上できる
ガス絶縁電気機器用光学式電圧変成装置を提供す
ることである。 Therefore, an object of the present invention is to make it possible to share an electro-optic effect element and a voltage-dividing electrode for various voltage classes and various dimensions between a voltage-dividing electrode and a ground potential part, to achieve this easily and inexpensively, and to improve measurement accuracy. An object of the present invention is to provide an optical voltage converter for gas-insulated electric equipment that can be used in gas-insulated electrical equipment.
この発明の一実施例を第２図ないし第５図に示
す。すなわち、このガス絶縁電気機器用光学式電
圧変成装置は、たとえばSF6ガス等の絶縁媒体を
封入した三相一括形ガス絶縁開閉器用容器５内の
三相線路の各高圧導体６（１本だけを示す）と大
地電位となる容器５との間に分圧電極７を絶縁配
置し、その高圧導体６と分圧電極７との間に電気
光学効果素子であるポツケルス素子８を接続し、
ポツケルス素子８に並列に分圧電圧調整用コンデ
ンサ９を接続している。 An embodiment of this invention is shown in FIGS. 2 to 5. That is, this optical voltage transformer for gas-insulated electric equipment is configured to connect each high-voltage conductor 6 (only one A partial voltage electrode 7 is insulated between the high voltage conductor 6 and the container 5 which is at ground potential, and a Pockels element 8, which is an electro-optic effect element, is connected between the high voltage conductor 6 and the partial voltage electrode 7.
A divided voltage adjustment capacitor 9 is connected in parallel to the Pockels element 8.
この分圧電圧調整用コンデンサ９は、高圧導体
６の電圧階級および分圧電極７と容器５間の寸法
設定値に応じて決定され、この分圧電圧調整用コ
ンデンサ９のキヤパシタンスCDとポツケルス素
子８のキヤパシタンスCCPの合成値CTが分圧電極
７と高圧導体６間のキヤパシタンスとなり、ポツ
ケルス素子８に加わる電圧が調整されることとな
る。分圧電圧調整用コンデンサ９は種々のキヤパ
シタンスのものが市販され、また複数のコンデン
サを直並列に組合せて接続することにより任意の
キヤパシタンスを設定でき、安価に入手できる。
したがつて、前記従来の各種ニーズに簡単に応じ
ることができる。 This capacitor 9 for adjusting the divided voltage voltage is determined according to the voltage class of the high voltage conductor 6 and the dimension setting value between the voltage dividing electrode 7 and the container 5, and the capacitance C D of this capacitor 9 for adjusting the divided voltage and the Pockels element The composite value C T of the capacitance C CP of 8 becomes the capacitance between the voltage dividing electrode 7 and the high voltage conductor 6, and the voltage applied to the Pockels element 8 is adjusted. Capacitors 9 for adjusting divided voltage are commercially available with various capacitances, and any capacitance can be set by connecting a plurality of capacitors in series and parallel, and can be obtained at low cost.
Therefore, the various conventional needs described above can be easily met.
第４図および第５図のように高圧導体６は空心
導体であり、これに略円筒形のシールド電極１０
が同軸状に取付ボルト１１により取付けられる。
分圧電極７はシールド電極１０の周胴部に設けた
開口部１３に配置され、絶縁物１４を介してねじ
１５によりシールド電極１０に取付けられる。ま
たポツケルス素子８がシールド電極１０の内周面
に取付けられ、各端子１６をリード線１７により
高圧導体６および分圧電極７に接続している。さ
らに各端子１６間に分圧電圧調整用コンデンサ９
を接続し、分圧電圧調整用コンデンサ９をシール
ド電極１０内に配置している。 As shown in FIGS. 4 and 5, the high voltage conductor 6 is an air-core conductor, and a substantially cylindrical shield electrode 10 is attached to it.
are mounted coaxially with mounting bolts 11.
The voltage dividing electrode 7 is arranged in an opening 13 provided in the circumferential body of the shield electrode 10 and is attached to the shield electrode 10 with a screw 15 via an insulator 14 . Further, a Pockels element 8 is attached to the inner peripheral surface of the shield electrode 10, and each terminal 16 is connected to the high voltage conductor 6 and the voltage dividing electrode 7 by a lead wire 17. Furthermore, a capacitor 9 for adjusting the divided voltage between each terminal 16
are connected, and a capacitor 9 for adjusting the divided voltage is arranged within the shield electrode 10.
１８，１９は光コネクタ、２０，２１は光フア
イバケーブルで、第３図のようにガス絶縁開閉器
用容器５の壁に設けたコネクタ２２を介して外部
に引出し、一方の光フアイバケーブル２０を発光
回路に接続し、他方のケーブル２１を受光回路に
接続し、受光回路で電気信号に変換して所定のデ
ジタル保護制御システムへ伝送される。 Reference numerals 18 and 19 are optical connectors, and 20 and 21 are optical fiber cables, which are led out through a connector 22 provided on the wall of the gas-insulated switchgear container 5, as shown in FIG. The other cable 21 is connected to the circuit, and the other cable 21 is connected to a light receiving circuit, where the light receiving circuit converts it into an electrical signal and transmits it to a predetermined digital protection control system.
この実施例によれば、高圧導体６と分圧電極７
間に接続されたポツケルス素子８に並列に分圧電
圧調整用コンデンサ９を接続したため、分圧電圧
調整用コンデンサ９のキヤパシタンスCDのみを
変えることにより、種々の電圧階級および分圧電
極７と容器５間の寸法の異なるものに容易に対応
でき、したがつてポツケルス素子８および分圧電
極７を共用できるので工業化の上できわめて安価
にすることができる。また分圧電圧調整用コンデ
ンサ９のキヤパシタンスCDを適切に選択するこ
とにより、分圧電極７と容器５間のキヤパシタン
スCSを構成する面積を、電圧変成装置の精度の点
からみたばらつきが実用的に使用可能な範囲に選
定できるので、精度を良好にできる。 According to this embodiment, the high voltage conductor 6 and the voltage dividing electrode 7
Since the capacitor 9 for adjusting the divided voltage is connected in parallel to the Pockels element 8 connected between the capacitor 9 and the capacitor 9 for adjusting the divided voltage, various voltage classes and the voltage dividing electrode 7 and the container can be adjusted by changing only the capacitance C D of the capacitor 9 for adjusting the divided voltage. It can be easily adapted to devices having different dimensions between the two, and therefore the Pockels element 8 and the voltage dividing electrode 7 can be shared, making it possible to achieve a very low cost in terms of industrialization. In addition, by appropriately selecting the capacitance C D of the capacitor 9 for adjusting the divided voltage, the area constituting the capacitance C S between the voltage dividing electrode 7 and the container 5 can be reduced to a practical level from the viewpoint of accuracy of the voltage converter. Since it can be selected within a usable range, the accuracy can be improved.
さらに、高圧導体６と同電位のシールド電極１
０の開口部１３に分圧電極７を配設するととも
に、ポツケルス素子８および分圧電圧調整用コン
デンサ９をシールド電極１０内に配設したため、
ポツケルス素子８および分圧電圧調整用コンデン
サ９の配線を短くできしかも作業容易になる。ま
た容器５とシールド電極１０との間の電界の均一
性を乱さず、シールド電極１０内のデツドスペー
スを有効利用できるのでコンパクトになる。しか
もシールド電極１０内にポツケルス素子８および
分圧電圧調整用コンデンサ９を組み込みかつ配線
した状態でシールド電極１０を高圧導体６に取付
けることにより製造および組立ができるので実現
が容易である。 Furthermore, the shield electrode 1 having the same potential as the high voltage conductor 6
Since the voltage dividing electrode 7 is arranged in the opening 13 of 0, and the Pockels element 8 and the capacitor 9 for adjusting the voltage dividing voltage are arranged in the shield electrode 10,
The wiring of the Pockels element 8 and the capacitor 9 for adjusting the divided voltage can be shortened, and the work becomes easier. Further, the uniformity of the electric field between the container 5 and the shield electrode 10 is not disturbed, and the dead space within the shield electrode 10 can be effectively used, resulting in a compact design. Moreover, it is easy to manufacture and assemble by attaching the shield electrode 10 to the high-voltage conductor 6 with the Pockels element 8 and the capacitor 9 for adjusting the divided voltage being assembled and wired in the shield electrode 10, making it easy to implement.
なお、この発明の電気光学効果素子は電圧に比
例した光量を出力するものであればよい。 Note that the electro-optic effect element of the present invention may be one that outputs a light amount proportional to a voltage.
以上のように、この発明のガス絶縁電気機器用
光学式電圧変成装置は、大地電位の容器内に配設
された高圧導体に被さる筒状体であつて前記高圧
導体に取付けられて周胴部に開口部を形成したシ
ールド電極と、このシールド電極に絶縁物を介し
て取付けられるとともに前記開口部に配置されて
前記高圧導体の電位と前記大地電位の中間の電位
をもつ分圧電極と、前記シールド電極の内側に配
設されて前記分圧電極と前記高圧導体との間に接
続された電気光学効果素子と、前記シールド電極
の内側に配設されて前記電気光学効果素子に並列
に接続された分圧電圧調整用コンデンサとを備え
たため、つぎの作用効果がある。 As described above, the optical voltage converter for gas-insulated electrical equipment of the present invention is a cylindrical body that covers a high-voltage conductor disposed in a container at earth potential, and is attached to the high-voltage conductor and has an opening in the circumferential body. a partial voltage electrode attached to the shield electrode via an insulator and disposed in the opening and having a potential intermediate between the potential of the high voltage conductor and the ground potential; and the shield electrode. an electro-optic effect element arranged inside the shield electrode and connected between the voltage dividing electrode and the high voltage conductor; and an electro-optic effect element arranged inside the shield electrode and connected in parallel to the electro-optic effect element. Since it is equipped with a piezovoltage adjustment capacitor, it has the following effects.
すなわち、高圧導体と分圧電極間に接続された
電気光学効果素子に並列に分圧電圧調整用コンデ
ンサを接続したため、分圧電圧調整用コンデンサ
のキヤパシタンスのみを変えることにより、種々
の電圧階級および分圧電極と容器間の寸法の異な
るものに電気光学効果素子および分圧電極を共用
できるので、工業化の上できわめて安価にするこ
とができる。また分圧電圧調整用コンデンサのキ
ヤパシタンスを適切に選択することにより、精度
を良好にできる。 In other words, since the capacitor for adjusting the divided voltage is connected in parallel to the electro-optic effect element connected between the high voltage conductor and the voltage dividing electrode, various voltage classes and divisions can be achieved by changing only the capacitance of the capacitor for adjusting the divided voltage. Since the electro-optic effect element and the partial pressure electrode can be used in common for devices with different dimensions between the piezo electrode and the container, the cost can be extremely reduced in terms of industrialization. Further, by appropriately selecting the capacitance of the capacitor for adjusting the divided voltage, the accuracy can be improved.
さらに、高圧導体と同電位のシールド電極の開
口部に分圧電極を配設するとともに、電気光学効
果素子および分圧電圧調整用コンデンサをシール
ド電極内に配設したため、電気光学効果素子およ
び分圧電圧調整用コンデンサの配線を短くできし
かも作業容易になる。また容器とシールド電極と
の間の電界の均一性を乱さず、しかもシールド電
極内のデツドスペースを有効利用できるのでコン
パクトになる。さらにシールド電極内に電気光学
効果素子および分圧電圧調整用コンデンサを組み
込みかつ配線した状態でシールド電極を高圧導体
に取付けることにより製造およ組立ができるので
実現容易であるという効果がある。 In addition, a voltage dividing electrode is placed in the opening of the shield electrode that has the same potential as the high voltage conductor, and an electro-optic effect element and a capacitor for adjusting the partial voltage are placed inside the shield electrode. The wiring of the voltage adjustment capacitor can be shortened and the work becomes easier. Furthermore, the uniformity of the electric field between the container and the shield electrode is not disturbed, and the dead space within the shield electrode can be used effectively, resulting in a compact design. Furthermore, the electro-optical effect element and the capacitor for adjusting the divided voltage are assembled and wired in the shield electrode, and the shield electrode is attached to the high-voltage conductor, thereby manufacturing and assembling the shield electrode, thereby making it easy to implement.
第１図は従来例の等価回路図、第２図はこの発
明の一実施例の等価回路図、第３図はその具体的
説明図、第４図はその詳細断面図、第５図はその
−線断面図である。
５…大地電位の容器、６…高圧導体、７…分圧
電極、８…電気光学効果素子であるポツケルス素
子、９…分圧電圧調整用コンデンサ、１０…シー
ルド電極、１３…開口部、１４…絶縁物。
Fig. 1 is an equivalent circuit diagram of a conventional example, Fig. 2 is an equivalent circuit diagram of an embodiment of the present invention, Fig. 3 is a concrete explanatory diagram thereof, Fig. 4 is a detailed sectional view thereof, and Fig. 5 is its equivalent circuit diagram. - line sectional view. 5... Earth potential container, 6... High voltage conductor, 7... Partial voltage electrode, 8... Pockels element which is an electro-optic effect element, 9... Capacitor for adjusting partial voltage, 10... Shield electrode, 13... Opening, 14... Insulator.
Claims (1)
さる筒状体であつて前記高圧導体に取付けられて
周胴部に開口部を形成したシールド電極と、この
シールド電極に絶縁物を介して取付けられるとと
もに前記開口部に配置されて前記高圧導体の電位
と前記大地電位の中間の電位をもつ分圧電極と、
前記シールド電極の内側に配設されて前記分圧電
極と前記高圧導体との間に接続された電気光学効
果素子と、前記シールド電極の内側に配設されて
前記電気光学効果素子に並列に接続された分圧電
圧調整用コンデンサとを備えたガス絶縁電気機器
用光学式電圧変成装置。1 A shield electrode, which is a cylindrical body that covers a high voltage conductor placed in a container at earth potential and is attached to the high voltage conductor and has an opening in its circumferential body, and a shield electrode that is attached to this shield electrode via an insulator. and a partial voltage electrode disposed in the opening and having a potential intermediate between the potential of the high voltage conductor and the ground potential;
an electro-optic effect element disposed inside the shield electrode and connected between the voltage dividing electrode and the high-voltage conductor; and an electro-optic effect element disposed inside the shield electrode and connected in parallel to the electro-optic effect element. An optical voltage transformer for gas-insulated electrical equipment, which is equipped with a divided voltage adjustment capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58097157A JPS59221671A (en) | 1983-05-31 | 1983-05-31 | Optical voltage transformer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58097157A JPS59221671A (en) | 1983-05-31 | 1983-05-31 | Optical voltage transformer device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59221671A JPS59221671A (en) | 1984-12-13 |
| JPH0352829B2 true JPH0352829B2 (en) | 1991-08-13 |
Family
ID=14184732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58097157A Granted JPS59221671A (en) | 1983-05-31 | 1983-05-31 | Optical voltage transformer device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59221671A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01170859A (en) * | 1987-12-26 | 1989-07-05 | Chubu Electric Power Co Inc | Photo electric voltage convertor |
| CN104965122B (en) * | 2015-07-17 | 2018-03-13 | 三峡大学 | Temperature self-compensation type optical voltage measuring device based on ring electric field coupled structure |
-
1983
- 1983-05-31 JP JP58097157A patent/JPS59221671A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59221671A (en) | 1984-12-13 |
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