JPH0726981B2 - Voltage detector - Google Patents
Voltage detectorInfo
- Publication number
- JPH0726981B2 JPH0726981B2 JP1005996A JP599689A JPH0726981B2 JP H0726981 B2 JPH0726981 B2 JP H0726981B2 JP 1005996 A JP1005996 A JP 1005996A JP 599689 A JP599689 A JP 599689A JP H0726981 B2 JPH0726981 B2 JP H0726981B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- electrode layer
- detection electrode
- layer
- ground potential
- 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
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
- Gas-Insulated Switchgears (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は、電圧検知装置に関し、もう少し詳しくいう
と、変電設備における充電部と検出部間の静電容量によ
り、検出部から大地に流れる誘導電流を入力抵抗で電圧
に変換し、充電部の電圧の有無を検出するための電圧検
知装置に関するものである。Description: TECHNICAL FIELD The present invention relates to a voltage detection device, and more specifically, it is an induction device that flows from a detection unit to the ground due to the capacitance between the charging unit and the detection unit in a substation facility. The present invention relates to a voltage detection device for converting a current into a voltage with an input resistance and detecting the presence / absence of a voltage in a charging unit.
［従来の技術］ 第２図は、例えば特開昭59−175523号公報に記載された
ような、従来のこの種の電圧検知装置で、図において、
電圧が印加される充電部導体（１）を保持している注型
絶縁物（２）の外周面に、金属層外被でなる接地電位層
（3a）および検出電極層（アンテナ）（4a）が絶縁層
（9a）により電気的に互いに分離して配設されている。
電圧検知器（５）は、検出電極層（4a）から引き出され
る誘導電流の有無を感知することにより、充電部導体
（１）の電圧の有無を検出する。[Prior Art] FIG. 2 shows a conventional voltage detecting device of this type as described in, for example, JP-A-59-175523.
A ground potential layer (3a) and a detection electrode layer (antenna) (4a), which are metal layers, are formed on the outer peripheral surface of the casting insulator (2) holding the charging section conductor (1) to which a voltage is applied. Are electrically separated from each other by an insulating layer (9a).
The voltage detector (5) detects the presence / absence of the voltage of the charging section conductor (1) by sensing the presence / absence of an induced current drawn from the detection electrode layer (4a).
以上の構成により、充電部導体（１）に電圧が印加され
ると、接地電位層（3a）に対して電界が発生する。この
電界中に、接地された接地電位層（3a）と電気的に分離
した絶縁層（9a）で区切られた検出電極層（4a）に、電
圧検知器（５）の入力インピーダンス（図示せず）を接
続して大地に接地をとると、静電誘導電流が検出電極層
（4a）と大地間に流れる。電圧検知器（５）は、上記の
静電誘導電流の有無を電圧に変換して感知し、充電部導
体（１）の電圧の有無を検出する。With the above configuration, when a voltage is applied to the charging section conductor (1), an electric field is generated in the ground potential layer (3a). In this electric field, the input impedance (not shown) of the voltage detector (5) is applied to the detection electrode layer (4a) separated by the insulating layer (9a) electrically separated from the ground potential layer (3a). ) Is connected to ground to ground, an electrostatic induction current flows between the detection electrode layer (4a) and ground. The voltage detector (5) detects the presence or absence of the voltage of the charging section conductor (1) by converting the presence or absence of the electrostatic induction current into a voltage and sensing the same.
［発明が解決しようとする課題］ 以上のような従来の電圧検知装置は、充電部導体（１）
に電圧が印加されて接地電位層（3a）に対して電界が生
じた際、この電界中において、接地電位層（3a）と検出
電極層（4a）の対向する端部間は、薄い金属層が対向し
ているので、この部位に電界が集中し、コロナを発生す
るという問題点があった。[Problems to be Solved by the Invention] In the conventional voltage detection device as described above, the charging portion conductor (1) is used.
When a voltage is applied to the ground potential layer to generate an electric field to the ground potential layer (3a), a thin metal layer is formed between the opposing ends of the ground potential layer (3a) and the detection electrode layer (4a) in the electric field. Since they are opposed to each other, there is a problem that the electric field is concentrated on this portion and corona is generated.
この発明はかかる課題を解決するためになされたもの
で、接地電位層と検出電極層間の電界を緩和してコロナ
の発生を防止することができる電圧検知装置を得ること
を目的とする。The present invention has been made to solve the above problems, and an object of the present invention is to obtain a voltage detection device capable of relaxing the electric field between the ground potential layer and the detection electrode layer and preventing the generation of corona.
［課題を解決するための手段］ この発明に係る電圧検知装置は、接地電位層と検出電極
層の互いに対向する端部を、それぞれ断面円弧状部を伴
って折曲し、その間に絶縁突条を介在させたものであ
る。[Means for Solving the Problems] In the voltage detection device according to the present invention, the end portions of the ground potential layer and the detection electrode layer, which face each other, are bent with arcuate cross-sections, respectively, and insulating ridges are provided therebetween. Is interposed.
［作 用］ この発明においては、接地電位層と検出電極層の対向す
る端部の電圧が抑制され、電圧強度が低減する。[Operation] In the present invention, the voltage at the opposite ends of the ground potential layer and the detection electrode layer is suppressed, and the voltage intensity is reduced.
また、絶縁突条の表面に防水性絶縁塗料を塗布すれば、
絶縁突条の表面抵抗が低下するのを防止することができ
る。Also, if you apply a waterproof insulating paint on the surface of the insulating ridge,
It is possible to prevent the surface resistance of the insulating ridges from decreasing.
［実施例］ 第１図はこの発明の一実施例を示し、接地電位層（３）
および検出電極層（４）相互の対向する端部は、それぞ
れ断面円弧状部（７）（８）を伴って折曲して対向さ
せ、その間に環状の絶縁突条（６）を介在させる。絶縁
突条（６）は注型絶縁物（２）と一体に形成されてい
る。絶縁突条（６）の表面（９）には防水性絶縁塗料
（10）が塗布されている。[Embodiment] FIG. 1 shows an embodiment of the present invention, in which a ground potential layer (3) is used.
The end portions of the detection electrode layer (4) and the detection electrode layer (4) that face each other are bent to face each other along the arcuate portions (7) and (8) in cross section, and the annular insulating ridge (6) is interposed therebetween. The insulating ridges (6) are formed integrally with the casting insulator (2). The surface (9) of the insulating ridge (6) is coated with a waterproof insulating paint (10).
その他、第２図におけると同一符号は同一部分を示して
いる。In addition, the same reference numerals as those in FIG. 2 indicate the same parts.
以上の構成により、接地電位層（３）と検出電極層
（４）間は、断面円弧状（７）（８）と絶縁突条（６）
により、この部位での電界集中が抑制され、電界強度が
小さくなる。With the above configuration, the arcuate section (7) (8) and the insulating ridge (6) are provided between the ground potential layer (3) and the detection electrode layer (4).
As a result, electric field concentration is suppressed at this portion, and the electric field strength is reduced.
また、従来、接地電位層（３）と検出電極層（４）間の
絶縁層表面が汚損湿潤すると、絶縁層の表面抵抗が低下
し、誘導電流が分流して正確な電圧検知ができないとい
う問題があったが、絶縁突条（６）の表面（９）に防水
性絶縁塗料（10）を塗布したことにより、表面（９）の
抵抗の低下を防止することができる。Further, conventionally, when the surface of the insulating layer between the ground potential layer (3) and the detection electrode layer (4) is contaminated and wetted, the surface resistance of the insulating layer is lowered, and the induced current is shunted to prevent accurate voltage detection. However, the resistance of the surface (9) can be prevented from decreasing by applying the waterproof insulating paint (10) to the surface (9) of the insulating ridge (6).
なお、上記実施例では検出電極層（４）の場合について
説明したが、接地電位層と絶縁された中間電極層を備え
た機器、装置においても、各層の対向端部に断面円弧状
部を形成するとともに絶縁突条を介在させることで、同
様の効果を奏する。In addition, although the case of the detection electrode layer (4) has been described in the above-mentioned embodiment, the apparatus and the device including the intermediate electrode layer insulated from the ground potential layer are also provided with the arcuate cross-sections at the opposing ends of each layer. In addition, the same effect can be obtained by interposing the insulating ridge.
［発明の効果］ この発明は、以上の説明から明らかなように、接地電位
層と検出電極層の互いの対向する端部に断面円弧状部を
形成するとともに絶縁突条を介在させたので、対向端部
における電界を緩和してコロナの発生を防ぎ、正確な電
圧有無の検出を行うことができる。EFFECTS OF THE INVENTION As is apparent from the above description, according to the present invention, the arcuate cross-sections are formed at the ends of the ground potential layer and the detection electrode layer which face each other, and the insulating ridges are interposed. The electric field at the opposite end can be relaxed to prevent corona generation, and accurate presence / absence of voltage can be detected.
また、絶縁突条の表面に防水性絶縁塗料を塗布すれば、
汚損湿潤を招くような悪環境下においても、誤動作のな
い、信頼性の高い電圧検知ができる効果もある。Also, if you apply a waterproof insulating paint on the surface of the insulating ridge,
There is also an effect that voltage detection can be performed with high reliability without malfunction even in an adverse environment in which dirt and moisture are caused.
第１図はこの発明の一実施例の縦断面図、第２図は従来
の電圧検知装置の縦断面図である。 （１）……充電部導体、（２）……注型絶縁物、（３）
……接地電位層、（４）……検出電極層、（６）……絶
縁突条、（７）（８）……断面円弧状部。 なお、各図中、同一符号は同一又は相当部分を示す。FIG. 1 is a vertical sectional view of an embodiment of the present invention, and FIG. 2 is a vertical sectional view of a conventional voltage detecting device. (1) ... conductor for live part, (2) ... cast insulator, (3)
...... Ground potential layer, (4) ...... Detection electrode layer, (6) ...... Insulation ridge, (7) (8) ...... Circular section of cross section. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (1)
に互いに絶縁して接地電位層および検出電極層を設け、
前記充電部導体と前記検出電極層間の静電容量により前
記検出電極層から大地に流れる誘導電流を入力抵抗で電
圧に変換し、前記充電部導体の電圧の有無を検出する電
圧検知装置において、 前記接地電位層と前記検出電極層相互の対向端部をそれ
ぞれ断面円弧状部を伴って折曲対向させ、前記対向端部
間に絶縁突条を介在させてなることを特徴とする電圧検
知装置。1. A ground potential layer and a detection electrode layer, which are insulated from each other on the outer peripheral surface of a casting insulator holding a conductor of a charging section,
In a voltage detection device for converting an induced current flowing from the detection electrode layer to the ground by an input resistance by an electrostatic capacitance between the charging part conductor and the detection electrode layer into a voltage, and detecting the presence or absence of the voltage of the charging part conductor, A voltage detecting device, characterized in that the opposing ends of the ground potential layer and the detection electrode layer are bent to face each other with an arcuate section, and an insulating ridge is interposed between the opposing ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1005996A JPH0726981B2 (en) | 1989-01-17 | 1989-01-17 | Voltage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1005996A JPH0726981B2 (en) | 1989-01-17 | 1989-01-17 | Voltage detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02187667A JPH02187667A (en) | 1990-07-23 |
| JPH0726981B2 true JPH0726981B2 (en) | 1995-03-29 |
Family
ID=11626394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1005996A Expired - Lifetime JPH0726981B2 (en) | 1989-01-17 | 1989-01-17 | Voltage detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0726981B2 (en) |
-
1989
- 1989-01-17 JP JP1005996A patent/JPH0726981B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02187667A (en) | 1990-07-23 |
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