JP2007110772A - Phase spacer - Google Patents

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JP2007110772A
JP2007110772A JP2005295942A JP2005295942A JP2007110772A JP 2007110772 A JP2007110772 A JP 2007110772A JP 2005295942 A JP2005295942 A JP 2005295942A JP 2005295942 A JP2005295942 A JP 2005295942A JP 2007110772 A JP2007110772 A JP 2007110772A
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spacer
leakage current
interphase
peak value
processing device
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JP4550711B2 (en
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Ikuo Nakayama
郁男 中山
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Furukawa Electric Co Ltd
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Furukawa Electric Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a phase spacer in which an interphase short circuit caused by a phase spacer itself can be prevented. <P>SOLUTION: In the phase spacer 10 comprising a spacer body 14 having insulator portions 12A and 12B, and wire clamps 11A and 11B fixed to both ends of the spacer body 14, a leak current detector 20 comprising a magnetic sensor 22 for detecting a leak current flowing on the surface of the spacer body, a peak hold circuit 23 for capturing the peak value of the leak current, a data processor 26 storing the leak current peak value captured by the peak hold circuit 23, and a wireless transceiver unit 27 for transmitting stored data by radio is attached to the spacer body 14. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、相間スペーサに関し、特に相間スペーサ自体により生ずる相間短絡を防止することができる相間スペーサに関する。   The present invention relates to an interphase spacer, and more particularly to an interphase spacer that can prevent an interphase short circuit caused by the interphase spacer itself.

一般に、架空送電線には、ギャロッピングやスリートジャンプ等の大振幅振動が生じた場合、相間短絡事故が発生する恐れがある。そこで、これらの振動による相間短絡事故を防止するため、架空送電線には相間スペーサが取り付けられている。この相間スペーサは、碍子部を有するスペーサ本体と、このスペーサ本体の両端に取付けられた電線クランプとから構成され、架空送電線の径間内のほぼ中央または複数分割箇所に取り付けられる。
特開平5−146037号公報
In general, when a large amplitude vibration such as galloping or three-way jump occurs in an overhead power transmission line, there is a possibility that an interphase short circuit accident may occur. Therefore, in order to prevent an interphase short circuit accident due to these vibrations, an interphase spacer is attached to the overhead power transmission line. This interphase spacer is composed of a spacer main body having a lever portion and electric wire clamps attached to both ends of the spacer main body, and is attached to a substantially central portion or a plurality of divided portions within the span of the overhead power transmission line.
Japanese Patent Laid-Open No. 5-146037

しかしながら、架空送電線の径間内のほぼ中央または複数分割箇所に取り付けられた相間スペーサは、碍子部の洗浄や点検が困難であるため、塩害による相間短絡や碍子部の劣化による相間短絡が発生する場合がある。特に台風時には短時間に多量の塩分が碍子部に付着し、相間スペーサを介しての相間短絡が発生しやすくなる。このように、相間スペーサは相間短絡を防止するために取り付けるのであるが、相間スペーサを取り付けたために、かえって相間短絡が生じるという問題があった。   However, interphase spacers installed at the center of the overhead transmission line or at multiple divisions are difficult to clean and inspect the insulator, causing interphase short-circuit due to salt damage and interphase short-circuit due to deterioration of the insulator. There is a case. In particular, during a typhoon, a large amount of salt adheres to the insulator in a short time, and an interphase short circuit is likely to occur via the interphase spacer. As described above, the interphase spacer is attached in order to prevent the interphase short circuit. However, since the interphase spacer is attached, there is a problem that the interphase short circuit occurs.

本発明は上記の問題点に鑑み、相間スペーサ自体による相間短絡を未然に防止することができる相間スペーサを提供することを目的とする。   In view of the above problems, an object of the present invention is to provide an interphase spacer that can prevent a short circuit between phases due to the interphase spacer itself.

本発明は、請求項1記載のように、碍子部を有するスペーサ本体と、前記スペーサ本体の両端に取り付けられた電線クランプとを具備した相間スペーサにおいて、前記スペーサ本体に、スペーサ本体の表面を流れる漏れ電流を検出し、変動する漏れ電流のピーク値を記憶し、記憶されたデータを無線で伝送する漏れ電流検出器を取り付けたことを特徴とするものである。   According to the present invention, in the interphase spacer including the spacer main body having the insulator portion and the electric wire clamp attached to both ends of the spacer main body, the surface of the spacer main body flows through the spacer main body. A leakage current detector for detecting a leakage current, storing a peak value of the varying leakage current, and transmitting the stored data wirelessly is attached.

スペーサ本体の碍子部の表面が塩害等によりあるレベルを超えて汚損すると、スペーサ本体が導電性を帯び、その表面を流れる漏れ電流がピークをなすように急激に変動する。本発明では、スペーサ本体に上述の漏れ電流検出器を取り付けることにより、漏れ電流のピーク値を記憶させ、そのデータを無線で呼び出すことができる。   When the surface of the insulator portion of the spacer body is soiled beyond a certain level due to salt damage or the like, the spacer body becomes conductive, and the leakage current flowing on the surface fluctuates so as to have a peak. In the present invention, by attaching the above-described leakage current detector to the spacer body, the peak value of the leakage current can be stored and the data can be recalled wirelessly.

本発明は、スペーサ本体の表面を流れる漏れ電流を検出し、そのピーク値を記憶し、点検時に記憶されたデータを無線で呼び出し、スペーサ本体の汚損の程度を確認することができるので、相間スペーサ自体が原因となって生じる相間短絡事故を未然に防止することができる。   The present invention can detect the leakage current flowing on the surface of the spacer body, store the peak value, call the data stored at the time of inspection wirelessly, and check the degree of contamination of the spacer body. It is possible to prevent a short circuit accident between phases caused by itself.

以下、図面に基づいて本発明の実施の形態を詳細に説明する。
図1は、本発明にかかる相間スペーサの一実施形態の要部を切開した正面図である。この相間スペーサ10は、金属パイプ13の両端に碍子部12A、12Bを有するスペーサ本体14と、前記スペーサ本体14の両端に取り付けられた電線クランプ11A、11Bとを具備したしている。金属パイプ13には、漏れ電流検出器20が取り付けられている。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view in which a main part of one embodiment of an interphase spacer according to the present invention is cut open. The interphase spacer 10 includes a spacer main body 14 having insulator portions 12A and 12B at both ends of a metal pipe 13, and electric wire clamps 11A and 11B attached to both ends of the spacer main body 14. A leakage current detector 20 is attached to the metal pipe 13.

漏れ電流検出器20はケース21で覆われた構造をしている。ケース21内には、漏れ電流を検出する磁気センサ22と、前記検出された漏れ電流のピーク値を捕らえるピークホールド回路23と、前記ピークホールド回路23で捕らえられた漏れ電流ピーク値を記憶するデータ処理装置26と、前記データ処理装置26を作動させるサイリスタトリガー回路24と、前記データ処理装置26に記憶されたデータを無線で伝送する無線送受信ユニット27と、電源ON回路25と、蓄電器30と、リチウム電池31が収容されている。また、ケース21の外側には、アンテナ28と太陽電池29が取り付けられている。   The leakage current detector 20 has a structure covered with a case 21. In the case 21, a magnetic sensor 22 that detects a leakage current, a peak hold circuit 23 that captures the peak value of the detected leakage current, and data that stores the leakage current peak value captured by the peak hold circuit 23. A processing device 26, a thyristor trigger circuit 24 that operates the data processing device 26, a wireless transmission / reception unit 27 that wirelessly transmits data stored in the data processing device 26, a power ON circuit 25, a capacitor 30, A lithium battery 31 is accommodated. An antenna 28 and a solar cell 29 are attached to the outside of the case 21.

図2は、漏れ電流検出器20の作動を説明するブロック図である。
磁気センサ22は相間スペーサ10の漏れ電流を検出し、その検出信号をピークホールド回路23に入力する。
ピークホールド回路23は検出信号から所定の値以上の漏れ電流のピーク値を捕らえ、データ処理装置26に入力する。
データ処理装置26は入力された漏れ電流のピーク値をデジタル変換して記憶し、また、漏れ電流のピークの検出日時を記憶する。また、鉄塔間には複数の相間スペーサが取り付けられているので、データ処理装置26には、当該の相間スペーサ10を特定する識別番号を記憶させておく。
無線送受信ユニット27は、点検時にアンテナ28で受信した呼び出し信号に応じてデータ処理装置26に記憶されたデ−タを呼び出し、無線で伝送する。
サイリスタトリガー回路24は、磁気センサ22からの検出信号をサイリスタのゲートに受けて、オン状態になり、割り込み信号をデータ処理装置26に出力し、データ処理装置26を起動させる。
太陽電池29と蓄電器30は、ピークホールド回路23と無線送受信ユニット27の受信部に常時電力を供給し、ピークホールド回路23を作動状態に維持し、無線送受信ユニット27を受信可能な状態に維持する。昼間はおもに太陽電池29が電力を供給し、夜間は蓄電器30が、昼間に太陽電池29から蓄電した電力を供給する。
電源ON回路25は、無線送受信ユニット27から割り込み信号を受けて、データ処理装置26および無線送受信ユニット27の送信部にリチウム電池31から受けた電力を供給する。
FIG. 2 is a block diagram for explaining the operation of the leakage current detector 20.
The magnetic sensor 22 detects the leakage current of the interphase spacer 10 and inputs the detection signal to the peak hold circuit 23.
The peak hold circuit 23 captures the peak value of the leakage current greater than or equal to a predetermined value from the detection signal and inputs it to the data processing device 26.
The data processing device 26 digitally converts and stores the input leakage current peak value, and also stores the detection date and time of the leakage current peak. Since a plurality of interphase spacers are attached between the steel towers, the data processing device 26 stores an identification number that identifies the interphase spacer 10 concerned.
The wireless transmission / reception unit 27 calls the data stored in the data processing device 26 according to the calling signal received by the antenna 28 at the time of inspection, and transmits the data wirelessly.
The thyristor trigger circuit 24 receives the detection signal from the magnetic sensor 22 at the gate of the thyristor, turns on, outputs an interrupt signal to the data processing device 26, and activates the data processing device 26.
The solar cell 29 and the battery 30 constantly supply power to the peak hold circuit 23 and the reception unit of the wireless transmission / reception unit 27, maintain the peak hold circuit 23 in an operating state, and maintain the wireless transmission / reception unit 27 in a receivable state. . The solar cell 29 mainly supplies power during the daytime, and the battery 30 supplies the power stored from the solar cell 29 during the daytime.
The power ON circuit 25 receives the interrupt signal from the wireless transmission / reception unit 27 and supplies the power received from the lithium battery 31 to the data processor 26 and the transmission unit of the wireless transmission / reception unit 27.

漏れ電流検出器20は以下のようにして作動する。即ち、
1)ピークホールド回路23と無線送受信ユニット27の受信部は、昼間は太陽電池29から、夜間はキャパシタ30から自然エネルギーによる電力が常時供給されて、常時作動状態になっている。
2)磁気センサ22が漏れ電流を検出すると、その検出信号がピークホールド回路23とサイリスタトリガー回路24に入力される。
3)ピークホールド回路23は、磁気センサ22からの検出信号から所定以上の値のピーク値を捕らえる。また、サイリスタトリガー回路24は、入力された磁気センサ22の検出信号をサイリスタのゲートに受けてON状態になり、割り込み信号をデータ処理装置26に送り、データ処理装置26を起動させる。
4)割り込み信号により起動したデータ処理装置26は、ピークホールド回路23から漏れ電流のピーク値の信号を受けて、A/D変換して記憶し、同時に前記ピーク値を受けた時刻も記憶する。
The leakage current detector 20 operates as follows. That is,
1) The peak hold circuit 23 and the receiving unit of the wireless transmission / reception unit 27 are always in operation by being supplied with natural energy from the solar cell 29 during the day and from the capacitor 30 at night.
2) When the magnetic sensor 22 detects the leakage current, the detection signal is input to the peak hold circuit 23 and the thyristor trigger circuit 24.
3) The peak hold circuit 23 captures a peak value of a predetermined value or more from the detection signal from the magnetic sensor 22. The thyristor trigger circuit 24 receives the input detection signal of the magnetic sensor 22 at the gate of the thyristor and is turned on, sends an interrupt signal to the data processing device 26, and activates the data processing device 26.
4) The data processor 26 activated by the interrupt signal receives the signal of the peak value of the leakage current from the peak hold circuit 23, stores it after A / D conversion, and also stores the time when the peak value is received.

相間スペーサ10の汚損点検は以下のようにして行う。即ち、
5)データ呼び出し信号をアンテナ28を介して、無線送受信ユニット27の受信部に送る。
6)無線送受信ユニット27はデータ呼び出し信号を受信し、割り込み信号をデータ処理装置26と電源ON回路25に送る。
7)電源ON回路25は、割り込み信号を受けて、リチウム電池31から供給された電力をデータ処理装置26と無線送受信ユニット27の送信部に供給する。
8)データ処理装置26は記憶していたデータ(漏れ電流ピーク値、発生時刻、相間スペーサ10の識別番号など)を無線送受信ユニット27に送り、無線送受信ユニット27の送信部はそのデータをアンテナ28を介して無線で伝送する。
The interphase spacer 10 is checked for contamination as follows. That is,
5) A data call signal is sent to the receiving unit of the wireless transmission / reception unit 27 via the antenna 28.
6) The wireless transmission / reception unit 27 receives the data call signal and sends an interrupt signal to the data processing device 26 and the power ON circuit 25.
7) Upon receiving the interrupt signal, the power ON circuit 25 supplies the power supplied from the lithium battery 31 to the data processing device 26 and the transmission unit of the wireless transmission / reception unit 27.
8) The data processing device 26 sends the stored data (leakage current peak value, generation time, identification number of the interphase spacer 10 etc.) to the wireless transmission / reception unit 27, and the transmission unit of the wireless transmission / reception unit 27 transmits the data to the antenna 28. Via wireless transmission.

本実施形態が従来例と異なる特徴的なことは、スペーサ本体14に、漏れ電流のピーク値を検出、記憶し、点検時に記憶されたデータを無線により伝送することができる漏れ電流検出器20を取り付けたことである。また、太陽電池29とキャパシタ30により、漏れ電流検出器20を常時作動状態に維持していることである。   A characteristic of this embodiment that is different from the conventional example is that the spacer main body 14 is provided with a leakage current detector 20 that can detect and store the peak value of the leakage current and wirelessly transmit the data stored at the time of inspection. It is attached. In addition, the leakage current detector 20 is always kept in an operating state by the solar cell 29 and the capacitor 30.

本実施形態によれば、漏れ電流検出器20は常時、漏れ電流のピーク値を検出し、記憶することができる作動状態にあり、点検時に記憶されたデータを無線により伝送することができるので、確実に相間スペーサ10の異常を確認し、相間スペーサ10による相間短絡を未然に防止することができる。また、漏れ電流検出器20を作動状態に維持する電源は、太陽電池29とキャパシタ30から供給されるので、漏れ電流検出器20の維持管理が容易になる。   According to this embodiment, the leakage current detector 20 is always in an operating state in which the peak value of the leakage current can be detected and stored, and the data stored at the time of inspection can be transmitted wirelessly. An abnormality of the interphase spacer 10 can be reliably confirmed, and an interphase short circuit due to the interphase spacer 10 can be prevented in advance. Moreover, since the power source for maintaining the leakage current detector 20 in the operating state is supplied from the solar cell 29 and the capacitor 30, the maintenance management of the leakage current detector 20 is facilitated.

本発明に係る相間スペーサの一実施形態の要部を切開した正面概略図である。It is the front schematic diagram which cut | disconnected the principal part of one Embodiment of the interphase spacer based on this invention. 上記実施形態の漏れ電流検出器の作動を説明するブロック図である。It is a block diagram explaining the action | operation of the leakage current detector of the said embodiment.

符号の説明Explanation of symbols

10 相間スペーサ
11A、11B 電線クランプ
12A、12B 碍子部
13 金属パイプ
14 スペーサ本体
20 漏れ電流検出器
21 ケース
22 磁気センサ
23 ピークホールド回路
24 サイリスタトリガー回路
25 電源ON回路
26 データ処理装置
27 無線送受信ユニット
28 アンテナ
29 太陽電池
30 蓄電器
31 リチウム電池
DESCRIPTION OF SYMBOLS 10 Interphase spacer 11A, 11B Electric wire clamp 12A, 12B Insulator part 13 Metal pipe 14 Spacer main body 20 Leakage current detector 21 Case 22 Magnetic sensor 23 Peak hold circuit 24 Thyristor trigger circuit 25 Power supply ON circuit 26 Data processing device 27 Wireless transmission / reception unit 28 Antenna 29 Solar cell 30 Capacitor 31 Lithium battery

Claims (3)

碍子部を有するスペーサ本体と、前記スペーサ本体の両端に取り付けられた電線クランプとを具備した相間スペーサにおいて、
前記スペーサ本体に、スペーサ本体の表面を流れる漏れ電流を検出し、変動する漏れ電流のピーク値を記憶し、記憶されたデータを無線で伝送する漏れ電流検出器を取り付けたことを特徴とする相間スペーサ。
In the interphase spacer comprising a spacer main body having a lever portion and an electric wire clamp attached to both ends of the spacer main body,
A phase detector characterized in that a leakage current detector that detects a leakage current flowing on the surface of the spacer body, stores a peak value of a varying leakage current, and wirelessly transmits the stored data is attached to the spacer body. Spacer.
前記漏れ電流検出器は、漏れ電流を検出する磁気センサと、前記検出された漏れ電流のピーク値を捕らえるピークホールド回路と、前記ピークホールド回路で捕らえられた漏れ電流ピーク値を記憶するデータ処理装置と、前記データ処理装置を作動させるサイリスタトリガー回路と、前記データ処理装置に記憶されたデータを無線で伝送する無線送受信ユニットとを備えていることを特徴とする請求項1記載の相間スペーサ。   The leakage current detector includes a magnetic sensor that detects a leakage current, a peak hold circuit that captures a peak value of the detected leakage current, and a data processing device that stores the leakage current peak value captured by the peak hold circuit The interphase spacer according to claim 1, further comprising: a thyristor trigger circuit that operates the data processing device; and a wireless transmission / reception unit that wirelessly transmits data stored in the data processing device. 前記漏れ電流検出器は、前記ピークホールド回路と前記無線送受信ユニットの作動電源として、太陽電池と、前記太陽電池が発電した電力を蓄えるキャパシタとからなる電源を備えていることを特徴とする請求項2記載の相間スペーサ。   The said leakage current detector is provided with the power supply which consists of a solar cell and the capacitor which stores the electric power which the said solar cell generated as an operation power supply of the said peak hold circuit and the said radio | wireless transmission / reception unit. The interphase spacer according to 2.
JP2005295942A 2005-10-11 2005-10-11 Interphase spacer Expired - Fee Related JP4550711B2 (en)

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CN110071469A (en) * 2019-05-20 2019-07-30 广东工业大学 A kind of high-voltage transmission equipment and its wire clamp of conductor spacer device
CN112234559A (en) * 2020-09-28 2021-01-15 贵州电网有限责任公司 Device for reducing current grounding accident for rural power grid transformation and using method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102508103B (en) * 2011-11-11 2014-07-23 中国电力科学研究院 Distribution network hidden short-circuit fault risk early-warning and positioning method based on distributed intelligent agents

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH052535U (en) * 1991-06-24 1993-01-14 古河電気工業株式会社 Interphase spacer
JP2001231119A (en) * 2000-02-18 2001-08-24 Tohoku Electric Power Co Inc Insulator contamination detector and insulator contamination detecting system
JP2004117223A (en) * 2002-09-27 2004-04-15 Techno Success Kk Transmission line monitoring system and abnormality detecting device used for the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH052535U (en) * 1991-06-24 1993-01-14 古河電気工業株式会社 Interphase spacer
JP2001231119A (en) * 2000-02-18 2001-08-24 Tohoku Electric Power Co Inc Insulator contamination detector and insulator contamination detecting system
JP2004117223A (en) * 2002-09-27 2004-04-15 Techno Success Kk Transmission line monitoring system and abnormality detecting device used for the same

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CN104215523A (en) * 2013-06-03 2014-12-17 国家电网公司 Phase-to-phase spacer and fitting bending test platform
CN106655061A (en) * 2016-11-16 2017-05-10 国家电网公司 Intelligent strain wire clamp of overhead ground wire
CN106655061B (en) * 2016-11-16 2024-02-06 国家电网公司 Intelligent strain clamp of overhead ground wire
CN110071469A (en) * 2019-05-20 2019-07-30 广东工业大学 A kind of high-voltage transmission equipment and its wire clamp of conductor spacer device
CN112234559A (en) * 2020-09-28 2021-01-15 贵州电网有限责任公司 Device for reducing current grounding accident for rural power grid transformation and using method
CN112234559B (en) * 2020-09-28 2022-03-22 贵州电网有限责任公司 Device for reducing current grounding accident for rural power grid transformation and using method

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