JPH0466092B2 - - Google Patents
Info
- Publication number
- JPH0466092B2 JPH0466092B2 JP60032249A JP3224985A JPH0466092B2 JP H0466092 B2 JPH0466092 B2 JP H0466092B2 JP 60032249 A JP60032249 A JP 60032249A JP 3224985 A JP3224985 A JP 3224985A JP H0466092 B2 JPH0466092 B2 JP H0466092B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage detection
- layer
- voltage
- electrode
- guide hole
- 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
- 238000001514 detection method Methods 0.000 claims description 74
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
Landscapes
- Transformers For Measuring Instruments (AREA)
Description
【発明の詳細な説明】
〔技術分野〕
本発明は、地中送配電ケーブルにおける電圧検
出、およびケーブル線路の検電を行えるようにし
た検電端子カバー型静電変成器に関し、更に詳し
くはケーブル接続部の外周に形成されている検電
層に通じる案内孔を有し、かつ、電圧検出用の電
極を固定一体化した検電カバー本体と、前記検電
層と電極を電気的に接続したり、外したりする検
電用キヤツプを備えた検電端子カバー型静電変成
器に関する。[Detailed Description of the Invention] [Technical Field] The present invention relates to a voltage detection terminal cover type electrostatic transformer that is capable of detecting voltage in underground power transmission and distribution cables and detecting voltage in cable lines. A voltage detection cover main body having a guide hole communicating with the voltage detection layer formed on the outer periphery of the connection part and having a voltage detection electrode fixedly integrated therein, and electrically connecting the voltage detection layer and the electrode. The present invention relates to a voltage detection terminal cover type electrostatic transformer equipped with a voltage detection cap that can be inserted or removed.
従来の地中送配電ケーブル接続部として、第１
図に示すものがある。このケーブル接続部は開閉
器側受部１とケーブル２の端導体３を圧縮端子４
を介して接続するものであり、内部半導電層５お
よびストレスコーン６と、外周に外部遮蔽層９を
有する絶縁筒７等によつて構成されている。外部
遮蔽層９は途中で断続されており、その部分に検
電層８が形成されている。検電層８は短絡片１２
によつて外部遮蔽層９と電気的に接続されたと
き、外部遮蔽層として機能し、短絡片１２を外し
たとき、ケーブル線路２の状態に応じた電位を保
持する。絶縁筒７はホースバンド１０，１１で締
め付けられており、外部遮蔽層９はケーブル線路
２の外部導電層と接続されている。
As a conventional underground power transmission and distribution cable connection section,
There is one shown in the figure. This cable connection part connects the switch side receiving part 1 and the end conductor 3 of the cable 2 to the compression terminal 4.
It is made up of an internal semiconducting layer 5, a stress cone 6, an insulating cylinder 7 having an external shielding layer 9 on its outer periphery, and the like. The outer shielding layer 9 is interrupted in the middle, and the electrodetecting layer 8 is formed at that portion. The voltage detection layer 8 is a short circuit piece 12
When electrically connected to the external shielding layer 9 by the short-circuiting piece 12, it functions as an external shielding layer, and when the shorting piece 12 is removed, a potential corresponding to the state of the cable line 2 is maintained. The insulating tube 7 is fastened with hose bands 10, 11, and the outer shielding layer 9 is connected to the outer conductive layer of the cable line 2.
第２図は以上述べた地中送配電ケーブル接続部
を有する高圧キヤビネツトの部分を示し、開閉器
３０（３０ａ，３０ｂも同様に開閉器を示す）と
ケーブル２の接続部には、前述した検電層８（図
示せず）に加えて、電圧検出用コンデンサC1，
C2と、電流方向検出部３１と、零相電流検出部
３２と、事故方向検出部３３が設けられている。 Figure 2 shows a part of the high voltage cabinet having the above-mentioned underground power transmission/distribution cable connection part, and the connection part of the switch 30 (30a, 30b also shows the switch) and the cable 2 is equipped with the above-mentioned inspection. In addition to the electric layer 8 (not shown), a voltage detection capacitor C 1 ,
C 2 , a current direction detection section 31 , a zero-sequence current detection section 32 , and a fault direction detection section 33 are provided.
以上の構成において、事故方向検出部３３は電
圧検出用コンデンサC1，C2に基く分圧値を各相
から入力して零相電圧成分を検出し、これと零相
電流検出部３２から入力する零相電流と前記零相
電圧の位相の進遅に基いて事故点が電源側にある
か、あるいは負荷側にあるかを判定する。従つ
て、電流方向検出部３１の検出信号から電源側お
よび負荷側を特定することによつて事故方向を決
定することができる。 In the above configuration, the fault direction detection section 33 detects the zero-sequence voltage component by inputting the divided voltage values based on the voltage detection capacitors C 1 and C 2 from each phase, and detects the zero-sequence voltage component and the input from the zero-sequence current detection section 32. Based on the phase lead/lag of the zero-sequence current and the zero-sequence voltage, it is determined whether the fault point is on the power supply side or on the load side. Therefore, by specifying the power supply side and the load side from the detection signal of the current direction detection section 31, the direction of the accident can be determined.
しかし、斯る事故点判定部を備えた従来のケー
ブル接続部にあつては、電圧検出用として高圧コ
ンデンサや高圧トランスを使用するためにそれら
の間の配線が必要になり、更に電圧検出部と検電
部を別々に設けているため、全体構成が複雑にな
つて信頼性の向上に限度があり、かつ、コスト高
の要因となつている。 However, in the case of conventional cable connections equipped with such a fault point determination section, wiring between them is required because a high voltage capacitor or high voltage transformer is used for voltage detection. Since the voltage detection section is provided separately, the overall configuration becomes complicated, which limits the improvement in reliability and causes high costs.
本発明は上記に鑑みてなされたものであり、構
成を簡単にして信頼性を高め、かつ、コストを低
減するため、ケーブル接続部の外周に形成されて
いる検電層に通じる案内孔を有し、かつ零相電圧
検出用の電極を固定一体化した検電カバー本体
と、前記検電層と電極を電気的に接続したり、外
したりする検電用キヤツプを備えた検電端子カバ
ー型静電変成器を提供するものである。
The present invention has been made in view of the above, and in order to simplify the configuration, increase reliability, and reduce costs, the present invention has a guide hole that communicates with the voltage sensing layer formed on the outer periphery of the cable connection part. A voltage detection terminal cover type comprising a voltage detection cover main body with a fixed and integrated electrode for zero-phase voltage detection, and a voltage detection cap that electrically connects and disconnects the voltage detection layer and the electrode. The present invention provides an electrostatic transformer.
以下、本発明の検電端子カバー型静電変成器を
詳細に説明する。
Hereinafter, the voltage detection terminal cover type electrostatic transformer of the present invention will be explained in detail.
第３図乃至第６図は本発明の一実施例を示し、
第１図に示したものと同一の部分は同一の引用数
字で示されている。尚、第３図はケーブル接続部
の正面図、第４図はケーブル接続部の平面図、第
５図は第３図のＡ−Ａ断面図（零相電圧検出操作
の説明図）、第６図は検電操作の説明図である。 3 to 6 show an embodiment of the present invention,
Parts that are identical to those shown in FIG. 1 are designated by the same reference numerals. In addition, FIG. 3 is a front view of the cable connection part, FIG. 4 is a plan view of the cable connection part, FIG. The figure is an explanatory diagram of the voltage detection operation.
このケーブル接続部には、充電部と絶縁体７を
介して配置される検電層８と、この検電層８と絶
縁された外部遮蔽層９等の上に設置される絶縁部
材１３であつて、検電層８に通ずる案内孔１４を
有し（案内孔１４の底部には導電性のEPゴムが
一体形成されており、検電層８に通じている。ま
た案内孔１４は検電棒２８の挿入口となつてい
る）、且つ、電圧検出用電極１５（外部引出し線
１６を有する）を固定一体化した検電カバー本体
１３がモールド成形されている。この検電カバー
本体１３には、検電カバー固定用グリツプ１８、
検電カバー用固定ボルト・ナツト１９等により検
電端子カバーキヤツプ２０（絶縁部材２１と導電
性部材２２から成る）が嵌合固定される。この導
電性部材２２の一端２３は案内孔１４に挿入さ
れ、他端２４が電極１５と接触し、検電端子カバ
ーキヤツプ２０の外周面２５は遮蔽銅板で構成さ
れており、遮蔽銅板用グリツプ２６、遮蔽銅板用
ボルト・ナツト２７等を介して外部遮蔽層９に電
気的に接続されている。 This cable connection part includes a voltage sensing layer 8 placed between the live part and the insulator 7, and an insulating member 13 installed on an external shielding layer 9, etc., which is insulated from this voltage sensing layer 8. The guide hole 14 has a guide hole 14 that communicates with the voltage detection layer 8 (conductive EP rubber is integrally formed at the bottom of the guide hole 14 and communicates with the voltage detection layer 8. 28) and a voltage detection cover body 13 fixedly integrated with a voltage detection electrode 15 (having an external lead wire 16) is molded. This voltage detection cover main body 13 includes a grip 18 for fixing the voltage detection cover,
A voltage detection terminal cover cap 20 (consisting of an insulating member 21 and a conductive member 22) is fitted and fixed by a voltage detection cover fixing bolt/nut 19 or the like. One end 23 of this conductive member 22 is inserted into the guide hole 14, and the other end 24 is in contact with the electrode 15. , are electrically connected to the external shielding layer 9 via shielding copper plate bolts and nuts 27 and the like.
以上の構成において、検電端子カバーキヤツプ
２０を検電カバー本体１３に嵌合すると、検電端
子カバーキヤツプ２０の導電性部材２２の一端２
３が案内孔１４に挿入され、導電性EPゴム２３
を介して検電層８と電気的に接続され、他端２４
が電極１５と接触する。これにより、検電層８と
電極１５が電気的に接続され、ケーブル線路の状
態に応じた電位を引出し線１６から得られ、地絡
事故等には、電圧信号として外部に取り出すこと
ができる（各相の電圧信号に基いて零相電圧を求
める）。一方、検電端子カバーキヤツプ２０を取
り出し、検電棒２８を案内孔１４に挿入して導電
性EPゴム１７に接触させるとケーブル線路の検
電を行うことができる。この実施例から明らかな
ように、同一検電層８を使用して電圧の検出と検
電の両方を行うことができる。 In the above configuration, when the voltage detection terminal cover cap 20 is fitted to the voltage detection cover main body 13, one end 2 of the conductive member 22 of the voltage detection terminal cover cap 20
3 is inserted into the guide hole 14, and the conductive EP rubber 23
The other end 24 is electrically connected to the voltage sensing layer 8 through the
contacts the electrode 15. As a result, the voltage detection layer 8 and the electrode 15 are electrically connected, and a potential corresponding to the state of the cable line can be obtained from the lead wire 16, and in the event of a ground fault etc., it can be taken out as a voltage signal to the outside ( Find the zero-sequence voltage based on the voltage signal of each phase). On the other hand, by removing the voltage detection terminal cover cap 20 and inserting the voltage detection rod 28 into the guide hole 14 and bringing it into contact with the conductive EP rubber 17, the cable line can be tested for voltage. As is clear from this embodiment, the same voltage detection layer 8 can be used for both voltage detection and voltage detection.
尚、本発明のケーブル接続部はケーブルと開閉
器の接続部に限定するものではなく、ケーブルと
ケーブルの接続部であつてもよい。 Note that the cable connection portion of the present invention is not limited to a connection portion between a cable and a switch, but may be a connection portion between cables.
以上説明した通り、本発明の検電端子カバー型
静電変成器によれば、ケーブル接続部の外周に形
成されている検電層に通ずる案内孔を有し、且つ
電圧検出用の電極を固定一体化した検電カバー本
体と、前記検電層と電極を電気的に接続したり、
外したりする検電端子カバーキヤツプを備えてい
るため、電圧検出部と検電部を共通化することが
でき、更に電圧検出用のコンデンサやトランス及
びこれらに伴う配線等が不必要になり、構成が簡
単になつて信頼性を高め、且つ、コスト低減を実
現することができる。
As explained above, the voltage detection terminal cover type electrostatic transformer of the present invention has a guide hole communicating with the voltage detection layer formed on the outer periphery of the cable connection part, and has a voltage detection electrode fixed therein. electrically connecting the integrated voltage detection cover main body, the voltage detection layer and the electrode,
Since it is equipped with a voltage detection terminal cover cap that can be removed, it is possible to share the voltage detection part and the voltage detection part, and it also eliminates the need for voltage detection capacitors, transformers, and their associated wiring, making the configuration easier. This makes it possible to increase reliability and reduce costs.
第１図は、従来のケーブル接続部を示す図、第
２図は事故区間検出装置を示す図、第３図乃至第
６図は本発明の一実施例を示す図である。
符号の説明、１……開閉器側受部、２……ケー
ブル線路、３……端導体、４……圧縮端子、５…
…半導電層、６……ストレスコーン、７……絶縁
筒、８……検電層、９……外部遮蔽層、１０，１
１……ホースバンド、１２……短絡片、１３……
検電カバー本体、１４……案内孔、１５……零相
電圧検出用電極、１６……外部引出し線、１７…
…EPゴム、１８……検電端子カバー固定用グリ
ツプ、１９……検電端子カバー用固定ボルト・ナ
ツト、２０……検電端子カバーキヤツプ、２１…
…絶縁部材、２２……導電性部材、２３，２４…
…キヤツプの端部、２５……遮蔽銅板、（キヤツ
プの外周面）、２６……遮断銅板用グリツプ、２
７……遮断銅板用ボルト・ナツト、２８……検電
棒、３０，３０ａ，３０ｂ……開閉器、３１……
電流方向検出部、３２……零相電流検出部、３３
……事故方向判定部。
FIG. 1 is a diagram showing a conventional cable connection part, FIG. 2 is a diagram showing an accident zone detection device, and FIGS. 3 to 6 are diagrams showing an embodiment of the present invention. Explanation of symbols, 1... Switch side receiver, 2... Cable line, 3... End conductor, 4... Compression terminal, 5...
...Semiconducting layer, 6... Stress cone, 7... Insulating tube, 8... Voltage sensing layer, 9... External shielding layer, 10, 1
1... Hose band, 12... Short circuit piece, 13...
Voltage detection cover body, 14... Guide hole, 15... Zero-phase voltage detection electrode, 16... External lead wire, 17...
...EP rubber, 18... Grip for fixing voltage detection terminal cover, 19... Fixing bolt/nut for voltage detection terminal cover, 20... Voltage detection terminal cover cap, 21...
...Insulating member, 22... Conductive member, 23, 24...
... end of cap, 25 ... shielding copper plate, (outer circumferential surface of cap), 26 ... grip for shielding copper plate, 2
7... Bolt/nut for cut-off copper plate, 28... Voltage detection rod, 30, 30a, 30b... Switch, 31...
Current direction detection section, 32... Zero-phase current detection section, 33
... Accident direction determination department.
Claims (1)
線路の外部遮蔽層と短絡片によつて電気的に接続
されたとき、外部遮蔽層として機能し、前記短絡
片を取り外したとき、ケーブル線路の状態に応じ
た電位を保持する検電層を備えたケーブル接続部
において、 前記検電層に通じる案内孔を有し、かつ、該検
電層と電気的に接続されたとき、前記電位に基づ
く電圧信号を外部に出力する電極を固定一体化し
た検電カバー本体と、 該検電カバー本体に嵌合したとき、一端が前記
案内孔に挿入され、他端が前記電極と接触して該
電極と前記検電層を電気的に接続する検電用キヤ
ツプとを有し、 該検電用キヤツプを取り外したとき、前記案内
孔を介して検電棒を前記検電層に接触させること
により検電操作を行い、前記検電用キヤツプを前
記検電カバー本体に嵌合したとき、前記電極が出
力する電圧信号に基づいて地絡事故時の事故区間
の検出操作を行うことを特徴とする検電端子カバ
ー型静電変成器。[Claims] 1. When formed on the outer periphery of the cable connection part and electrically connected to the external shielding layer of the cable line by the shorting piece, it functions as an external shielding layer, and when the shorting piece is removed. , in a cable connection part equipped with a voltage detection layer that maintains a potential depending on the state of the cable line, when the cable connection part has a guide hole communicating with the voltage detection layer and is electrically connected to the voltage detection layer, a voltage detection cover body that is fixedly integrated with an electrode that outputs a voltage signal based on the potential to the outside; and when fitted to the voltage detection cover body, one end is inserted into the guide hole and the other end is in contact with the electrode. and a voltage detection cap that electrically connects the electrode and the voltage detection layer, and when the voltage detection cap is removed, a voltage detection rod is brought into contact with the voltage detection layer through the guide hole. When the cap for voltage detection is fitted to the voltage detection cover main body, an operation for detecting an accident section in the event of a ground fault is performed based on the voltage signal output from the electrode. Voltage detection terminal cover type electrostatic transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60032249A JPS61191008A (en) | 1985-02-20 | 1985-02-20 | Detection terminal cover type electrostatic transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60032249A JPS61191008A (en) | 1985-02-20 | 1985-02-20 | Detection terminal cover type electrostatic transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61191008A JPS61191008A (en) | 1986-08-25 |
| JPH0466092B2 true JPH0466092B2 (en) | 1992-10-22 |
Family
ID=12353733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60032249A Granted JPS61191008A (en) | 1985-02-20 | 1985-02-20 | Detection terminal cover type electrostatic transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61191008A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0645264Y2 (en) * | 1987-01-13 | 1994-11-16 | 株式会社三英社製作所 | Cable head voltage detection structure |
-
1985
- 1985-02-20 JP JP60032249A patent/JPS61191008A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61191008A (en) | 1986-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |