JPH11202000A - Optical vt - Google Patents
Optical vtInfo
- Publication number
- JPH11202000A JPH11202000A JP10004946A JP494698A JPH11202000A JP H11202000 A JPH11202000 A JP H11202000A JP 10004946 A JP10004946 A JP 10004946A JP 494698 A JP494698 A JP 494698A JP H11202000 A JPH11202000 A JP H11202000A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- capacitor
- electrode
- voltage dividing
- dividing capacitor
- 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 title claims abstract description 33
- 239000003990 capacitor Substances 0.000 claims abstract description 37
- 239000003985 ceramic capacitor Substances 0.000 claims abstract description 14
- 239000011810 insulating material Substances 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 abstract description 4
- 229920000647 polyepoxide Polymers 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 7
- 239000004020 conductor Substances 0.000 description 5
- 239000013307 optical fiber Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/04—Voltage dividers
- G01R15/06—Voltage dividers having reactive components, e.g. capacitive transformer
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、配電線に設置し
て、配電線路に発生する誘起電圧や線路電圧を測定し、
光信号に変換して出力する電圧センサ、すなわち光ＶＴ
（ＶｏｌｔａｇｅＴｒａｎｓｆｏｒｍｅｒ）に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring an induced voltage or a line voltage generated in a distribution line by installing the distribution line.
A voltage sensor that converts and outputs an optical signal, that is, an optical VT
(VoltageTransformer).
【０００２】[0002]
【従来の技術】従来の光ＶＴ（光ＰＴともいう）として
は、例えば特開平７−８３９６１号公報に記載されたも
のがある。すなわち、被測定電圧を分圧する分圧器と、
分圧器の出力電圧を電気光学結晶に印加して出力電圧に
応じた光強度に変換する光センサ部とを備え、前記光強
度に基づき被測定電圧の大きさを測定する。そして、分
圧器は、被測定電圧が印加される充電部、この充電部を
包囲する単一の空間電極および絶縁気体からなる気体コ
ンデンサとしての分圧器本体と、空間電極及び光センサ
部に接続される固体コンデンサから構成される。2. Description of the Related Art As a conventional light VT (also referred to as light PT), there is a light VT described in, for example, JP-A-7-83961. That is, a voltage divider for dividing the voltage to be measured,
An optical sensor unit that applies an output voltage of the voltage divider to the electro-optic crystal and converts the voltage into a light intensity corresponding to the output voltage, and measures the magnitude of the voltage to be measured based on the light intensity. The voltage divider is connected to a charged part to which the voltage to be measured is applied, a single space electrode surrounding the charged part and a voltage divider main body as a gas capacitor made of an insulating gas, a space electrode and an optical sensor part. Composed of solid capacitors.
【０００３】しかしながら、従来の光ＶＴは、分圧器本
体と固体コンデンサが分離され、しかも分圧器本体を密
封して中に絶縁気体を充たさなければならず、装置全体
の体積も大きく、大がかりな構成であった。However, in the conventional optical VT, the voltage divider main body and the solid capacitor must be separated, and the voltage divider main body must be sealed and filled with an insulating gas. Met.
【０００４】図２は、雷撃時の誘起電圧等の急峻パルス
電圧の測定システム（従来技術）を示した構成図であ
る。測定システムは、架空地線相導体５１に誘起された
電圧を分圧して光信号に変換する電圧検出部としての光
ＶＴ５２と、当該光信号を電気信号に変換し、記録等の
処理を行う計測処理部５３からなり、光ＶＴ５２と計測
処理部５３は、光ファイバケーブル５４により接続され
ている。光ＶＴ５２は、架空地線相導体５１に誘起され
た電圧を分圧する抵抗分圧器５５と、当該分圧された電
圧をＥ／Ｏ変換器５７に印加するための高圧プローブ５
６と、分圧された電圧を光信号に変換するためのＥ／Ｏ
変換器５７と、さらに前記高圧プローブ５６、Ｅ／Ｏ変
換器５７を駆動させるための大容量のバッテリー（図示
せず）を備える。そして、前記光信号は、光ファイバケ
ーブル５４を介して計測処理部５３に導かれる。計測処
理部５３は、光信号を電気信号に変換するためのＯ／Ｅ
変換器５８と、当該電気信号を処理し、記憶するための
トランジェント・メモリ５９、データレコーダ６０と、
絶縁トランス６１を含む電源装置６２を備える。FIG. 2 is a configuration diagram showing a system (prior art) for measuring a steep pulse voltage such as an induced voltage at the time of a lightning strike. The measurement system includes a light VT 52 as a voltage detection unit that divides a voltage induced in the overhead ground wire phase conductor 51 and converts the voltage into an optical signal, and a measurement that converts the optical signal into an electric signal and performs processing such as recording. The optical VT 52 and the measurement processing unit 53 are connected by an optical fiber cable 54. The optical VT 52 includes a resistance voltage divider 55 that divides the voltage induced in the overhead ground wire phase conductor 51, and a high voltage probe 5 that applies the divided voltage to the E / O converter 57.
6 and an E / O for converting the divided voltage into an optical signal.
It includes a converter 57, and a high-capacity battery (not shown) for driving the high-voltage probe 56 and the E / O converter 57. Then, the optical signal is guided to the measurement processing unit 53 via the optical fiber cable 54. The measurement processing unit 53 includes an O / E for converting an optical signal into an electric signal.
A converter 58, a transient memory 59 for processing and storing the electrical signal, a data recorder 60,
A power supply device 62 including an insulating transformer 61 is provided.
【発明が解決しようとする課題】このように、従来の測
定システムは、システム全体が複雑化、大型化してい
た。特に、配電線路に光ＶＴを設置するには、装柱スペ
ースに限りがあることと、取り扱い性を向上させ柱上で
の作業を容易にするため、光ＶＴの小型化が要望されて
いた。As described above, in the conventional measuring system, the entire system is complicated and large. In particular, when installing the optical VT in the distribution line, there is a demand for a limited space for the mounting column, and to reduce the size of the optical VT in order to improve the handleability and facilitate the work on the column.
【０００５】そこで本発明は、小型で、取り扱いの容易
な光ＶＴを提供しようとするものである。[0005] Therefore, the present invention is to provide a light VT which is small and easy to handle.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するた
め、請求項１記載の発明は、第１の分圧コンデンサと、
当該第１の分圧コンデンサに電気的に直列に接続される
第２の分圧コンデンサと、当該第２の分圧コンデンサに
電気的に並列に接続され、分圧された電圧を光信号に変
換する光センサ部から構成される。そして、前記第１の
分圧コンデンサ、第２の分圧コンデンサ、及び光センサ
部を絶縁材料により一体的に被覆する。なお、第１の分
圧コンデンサは、被測定電圧が印加される高圧電極と、
中間電極と、前記高圧電極と中間電極の間に挿入される
セラミックコンデンサから成る。第２の分圧コンデンサ
は、前記中間電極と、接地電極と、前記中間電極と接地
電極との間に挿入されるセラミックコンデンサから成
る。In order to solve the above-mentioned problems, the invention according to claim 1 comprises a first voltage-dividing capacitor,
A second voltage dividing capacitor electrically connected in series to the first voltage dividing capacitor; and a second voltage dividing capacitor electrically connected in parallel to the second voltage dividing capacitor to convert a divided voltage into an optical signal. And an optical sensor unit. Then, the first voltage dividing capacitor, the second voltage dividing capacitor, and the optical sensor unit are integrally covered with an insulating material. The first voltage dividing capacitor includes a high-voltage electrode to which a voltage to be measured is applied,
It comprises an intermediate electrode and a ceramic capacitor inserted between the high-voltage electrode and the intermediate electrode. The second voltage dividing capacitor includes the intermediate electrode, a ground electrode, and a ceramic capacitor inserted between the intermediate electrode and the ground electrode.
【０００７】[0007]
【発明の実施の形態】以下、図に沿って本発明の実施形
態を説明する。図１は、実施形態の部分断面図である。
被測定電圧が印加される高圧電極２と、中間電極３と、
高圧電極２と中間電極３との間に挿入されたセラミック
コンデンサ４から第１の分圧コンデンサが構成される。
前記中間電極３と、接地電極５と、中間電極３と接地電
極５との間に挿入されたセラミックコンデンサ６から第
２の分圧コンデンサが構成される。そして、第１の分圧
コンデンサと第２の分圧コンデンサは、電気的に直列に
接続される。これは、図１に示すように、高圧電極２、
セラミックコンデンサ４、中間電極３、セラミックコン
デンサ６、接地電極５の順番に配置し、接着することに
より達成される。さらに、Ｅ／Ｏ変換器やバッテリー
（図示せず）を含む光センサ部７を、第２の分圧コンデ
ンサに電気的に並列になるように接続し、前記分圧コン
デンサの下部に配置する。なお、光センサ部７はセンサ
収納箱８に収納されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partial cross-sectional view of the embodiment.
A high-voltage electrode 2 to which a voltage to be measured is applied, an intermediate electrode 3,
A first voltage dividing capacitor is constituted by the ceramic capacitor 4 inserted between the high voltage electrode 2 and the intermediate electrode 3.
A second voltage dividing capacitor is constituted by the intermediate electrode 3, the ground electrode 5, and the ceramic capacitor 6 inserted between the intermediate electrode 3 and the ground electrode 5. Then, the first voltage dividing capacitor and the second voltage dividing capacitor are electrically connected in series. This is, as shown in FIG.
This is achieved by arranging and bonding the ceramic capacitor 4, the intermediate electrode 3, the ceramic capacitor 6, and the ground electrode 5 in this order. Further, an optical sensor unit 7 including an E / O converter and a battery (not shown) is electrically connected in parallel to the second voltage dividing capacitor, and is arranged below the voltage dividing capacitor. Note that the optical sensor unit 7 is housed in a sensor housing box 8.
【０００８】実施形態は、上述した第１の分圧コンデン
サ、第２の分圧コンデンサ、及び光センサ部７を、絶縁
材料である屋外用エポキシ樹脂９により一体的に被覆す
ることを特徴とする。なお、絶縁材料であれば屋外用エ
ポキシ樹脂に限られず、例えば、ゴムや磁器により被覆
しても良い。The embodiment is characterized in that the first voltage dividing capacitor, the second voltage dividing capacitor, and the optical sensor section 7 are integrally coated with an outdoor epoxy resin 9 which is an insulating material. . The insulating material is not limited to the epoxy resin for outdoor use, and may be covered with, for example, rubber or porcelain.
【０００９】前記高圧電極２からリード線１０が引き出
され、架空地線相導体や煙突上の避雷針等の被測定導体
（図示せず）に電気的に接続される。A lead wire 10 is drawn out from the high-voltage electrode 2 and electrically connected to a conductor to be measured (not shown) such as an overhead ground wire phase conductor or a lightning rod on a chimney.
【００１０】一方、接地電極５には、外部と接続して接
地するための端子（図示せず）が設けられている。ま
た、センサ収納箱８からは、Ｅ／Ｏ変換器により変換さ
れた光信号を伝送するための光ファイバケーブル１１が
引き出され、計測処理部へ導かれる。なお、光センサ部
７の終端は、接地されている。On the other hand, the ground electrode 5 is provided with a terminal (not shown) for connecting to the outside and grounding. Further, an optical fiber cable 11 for transmitting the optical signal converted by the E / O converter is drawn out of the sensor storage box 8 and guided to the measurement processing unit. Note that the end of the optical sensor unit 7 is grounded.
【００１１】セラミックコンデンサ４、６は、温度変化
による容量変動がほとんどなく、本実施形態による測定
値の信頼性は高い。セラミックコンデンサ４、６の容量
を変更することにより、第１の分圧コンデンサ、第２の
分圧コンデンサ等によって決まる被測定電圧の分圧比を
適宜設定でき、高調波電圧等のあらゆる電圧測定が可能
であることは、いうまでもない。The ceramic capacitors 4 and 6 hardly change in capacitance due to temperature changes, and the reliability of measured values according to the present embodiment is high. By changing the capacitance of the ceramic capacitors 4 and 6, the voltage dividing ratio of the voltage to be measured determined by the first voltage dividing capacitor, the second voltage dividing capacitor, etc. can be set as appropriate, and all voltage measurement such as harmonic voltage can be performed. Needless to say,
【００１２】[0012]
【発明の効果】以上のように請求項１記載の発明によれ
ば、第１の分圧コンデンサ、第２の分圧コンデンサ、及
び光センサが絶縁材料により一体的に形成されるため、
小型で、しかも被測定導体への装着等にあたり取り扱い
の容易な光ＶＴを提供することができる。さらに、製造
コストの低減や、システム全体の簡素化を図ることがで
きる。As described above, according to the first aspect of the present invention, the first voltage dividing capacitor, the second voltage dividing capacitor, and the optical sensor are integrally formed of an insulating material.
It is possible to provide an optical VT that is small and easy to handle when mounted on a conductor to be measured. Further, the manufacturing cost can be reduced and the entire system can be simplified.
【図１】実施形態の部分断面図である。FIG. 1 is a partial sectional view of an embodiment.
【図２】従来のシステム構成図である。FIG. 2 is a configuration diagram of a conventional system.
１ 光ＶＴ ２ 高圧電極 ３ 中間電極 ４ セラミックコンデンサ ５ 接地電極 ６ セラミックコンデンサ ７ 光センサ部 ８ センサ収納箱 ９ 屋外用エポキシ樹脂 １０ リード線 １１ 光ファイバケーブル DESCRIPTION OF SYMBOLS 1 Optical VT 2 High voltage electrode 3 Intermediate electrode 4 Ceramic capacitor 5 Ground electrode 6 Ceramic capacitor 7 Optical sensor part 8 Sensor storage box 9 Outdoor epoxy resin 10 Lead wire 11 Optical fiber cable
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大塚 尊裕 東京都千代田区有楽町一丁目７番１号 東 光電気株式会社内 (72)発明者 渡部 信彦 東京都千代田区有楽町一丁目７番１号 東 光電気株式会社内 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takahiro Otsuka 1-7-1, Yurakucho, Chiyoda-ku, Tokyo Inside Toko Electric Co., Ltd. (72) Inventor Nobuhiko Watanabe 1-7-1, Yurakucho, Chiyoda-ku, Tokyo Toko Electric Co., Ltd.
Claims (1)
間電極と、前記高圧電極と中間電極の間に挿入されるセ
ラミックコンデンサから成る第１の分圧コンデンサと、 前記第１の分圧コンデンサに電気的に直列に接続され、
前記中間電極と、接地電極と、前記中間電極と接地電極
との間に挿入されるセラミックコンデンサから成る第２
の分圧コンデンサと、 前記第２の分圧コンデンサに電気的に並列に接続され、
分圧された電圧を光信号に変換する光センサ部から構成
され、 前記第１の分圧コンデンサ、第２の分圧コンデンサ、及
び光センサ部を絶縁材料により一体的に被覆することを
特徴とする光ＶＴ。1. A high-voltage electrode to which a voltage to be measured is applied, an intermediate electrode, a first voltage-dividing capacitor including a ceramic capacitor inserted between the high-voltage electrode and the intermediate electrode, and the first voltage-dividing capacitor. Electrically connected in series with the capacitor,
A second capacitor comprising the intermediate electrode, a ground electrode, and a ceramic capacitor inserted between the intermediate electrode and the ground electrode.
And a voltage dividing capacitor, which is electrically connected in parallel to the second voltage dividing capacitor,
An optical sensor unit for converting the divided voltage into an optical signal, wherein the first voltage dividing capacitor, the second voltage dividing capacitor, and the optical sensor unit are integrally covered with an insulating material. Light VT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10004946A JPH11202000A (en) | 1998-01-13 | 1998-01-13 | Optical vt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10004946A JPH11202000A (en) | 1998-01-13 | 1998-01-13 | Optical vt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11202000A true JPH11202000A (en) | 1999-07-30 |
Family
ID=11597748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10004946A Pending JPH11202000A (en) | 1998-01-13 | 1998-01-13 | Optical vt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11202000A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004086064A1 (en) * | 2003-03-28 | 2004-10-07 | Abb Research Ltd | Electro-optical voltage sensor |
| WO2008132974A1 (en) | 2007-04-18 | 2008-11-06 | Kabushiki Kaisha Toshiba | Optical vt device |
| CN103645368A (en) * | 2013-11-04 | 2014-03-19 | 国网河南省电力公司平顶山供电公司 | Transformation method of lightning arrester on-line monitoring type capacitive voltage transformer |
| EP3671227A1 (en) * | 2018-12-18 | 2020-06-24 | 3M Innovative Properties Company | Insulator for overhead power line conductors |
-
1998
- 1998-01-13 JP JP10004946A patent/JPH11202000A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004086064A1 (en) * | 2003-03-28 | 2004-10-07 | Abb Research Ltd | Electro-optical voltage sensor |
| WO2008132974A1 (en) | 2007-04-18 | 2008-11-06 | Kabushiki Kaisha Toshiba | Optical vt device |
| US8115473B2 (en) | 2007-04-18 | 2012-02-14 | Kabushiki Kaisha Toshiba | Optical voltage transformer |
| EP2138853A4 (en) * | 2007-04-18 | 2017-07-26 | Kabushiki Kaisha Toshiba | Optical vt device |
| CN103645368A (en) * | 2013-11-04 | 2014-03-19 | 国网河南省电力公司平顶山供电公司 | Transformation method of lightning arrester on-line monitoring type capacitive voltage transformer |
| EP3671227A1 (en) * | 2018-12-18 | 2020-06-24 | 3M Innovative Properties Company | Insulator for overhead power line conductors |
| WO2020128733A1 (en) * | 2018-12-18 | 2020-06-25 | 3M Innovative Properties Company | Insulator for overhead power line conductors |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020097933A1 (en) | Voltage sensor and apparatus | |
| JP5050052B2 (en) | Optical VT device | |
| JPH11202000A (en) | Optical vt | |
| JPS62116265A (en) | Voltage detector | |
| CN211086429U (en) | All-dielectric optical fiber output type transient current measuring device | |
| JP3516293B2 (en) | Optical voltage sensor | |
| US5374822A (en) | Optical transmitter for producing an optical signal indicative of temperature | |
| JP2747057B2 (en) | Optical voltage detector for high voltage | |
| CN110456117A (en) | Intelligent electric ready-package can hot line job voltage sensor | |
| JPH06222086A (en) | Single-phase voltage detector | |
| JP2615861B2 (en) | High voltage equipment with power indicator | |
| JP2969035B2 (en) | Optical PT | |
| JP2970375B2 (en) | Optical voltage measuring device | |
| JPH0352829B2 (en) | ||
| JPS58193711U (en) | Potential detection device for internal bus bar of gas insulated switchgear | |
| JPH0336195Y2 (en) | ||
| JP2754943B2 (en) | Temperature display | |
| JP2696614B2 (en) | Electricity detector for electrical equipment | |
| JPH10142266A (en) | Transformer for light transforming type measuring instrument | |
| JP2887829B2 (en) | Optical voltmeter | |
| JPH0644505B2 (en) | Spark plug temperature measuring device | |
| JPH08191535A (en) | Grounding-conductor extraction unit | |
| JPS588838U (en) | High voltage cutout with built-in lightning arrester with lightning current measuring element | |
| JPH073344Y2 (en) | Insulator device for voltage detection | |
| JPS61214309A (en) | Voltage sensor built-in type lightningproof insulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20021030 |