JPH0354313B2 - - Google Patents
Info
- Publication number
- JPH0354313B2 JPH0354313B2 JP7613283A JP7613283A JPH0354313B2 JP H0354313 B2 JPH0354313 B2 JP H0354313B2 JP 7613283 A JP7613283 A JP 7613283A JP 7613283 A JP7613283 A JP 7613283A JP H0354313 B2 JPH0354313 B2 JP H0354313B2
- Authority
- JP
- Japan
- Prior art keywords
- power transmission
- transmission line
- lightning strike
- lightning
- magnetic sensor
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
Landscapes
- Locating Faults (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
【発明の詳細な説明】
本発明は、送電線の落雷位置検出方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for detecting the position of a lightning strike on a power transmission line.
架空送電線に落雷があると、この落雷位置で送
電線が損傷することがある。このような送電線の
損傷を放置すると、断線することがあるので落雷
があつた時送電線の損傷の有無を確認することが
行われている。従来技術では作業者が宙乗機に乗
つて目視で送電線の損傷の有無を確認していたの
で損傷を看過することがある上に作業性が低く不
経済であつた。 If lightning strikes an overhead power line, the line may be damaged at the location of the lightning strike. If such damage to a power transmission line is left untreated, it may break, so it is common practice to check for damage to power transmission lines when lightning strikes. In the conventional technology, a worker rides on a spacecraft and visually checks whether or not there is damage to the power transmission line, which not only sometimes overlooks damage but also has low work efficiency and is uneconomical.
本発明の目的は、送電線の落雷位置を正確に且
つ高い作業性で検出することができる方法を提供
することにある。 An object of the present invention is to provide a method that can accurately detect the location of a lightning strike on a power transmission line with high workability.
本発明の実施例を図面を参照して詳細にのべる
と、送電線１０は、一般に、第１図に示すように
鋼心１２を内部に有するアルミニウム撚線１４か
ら成る鋼心アルミニウム撚線又は鋼撚線であり、
このための送電線１０に落雷があると、雷電流Ｉ
は落雷位置ｘから第２図の矢印ａ，a′で示すよう
に左右に分流し鉄塔１６，１６′を通つて大地に
流込んで鋼心１２が落雷地点ｘを境にして逆方向
に磁化される。これは送電線の導体は第３図に示
すようにアルミニウム撚線１４であるため雷電流
は鋼心１２のまわりをスパイラル状に流れるので
鋼心１２は雷電流の流れる方向ａ，a′と同方向に
磁化されるからである。 Embodiments of the present invention will be described in detail with reference to the drawings. The power transmission line 10 generally comprises a steel core aluminum stranded wire or a steel core stranded wire 14 having a steel core 12 therein as shown in FIG. It is a twisted wire,
When the power transmission line 10 for this purpose is struck by lightning, the lightning current I
As shown by arrows a and a' in Figure 2 from the lightning strike position x, the steel core 12 flows into the ground through the steel towers 16 and 16' and becomes magnetized in the opposite direction with the lightning strike point x as the boundary. be done. This is because the conductor of the transmission line is an aluminum stranded wire 14 as shown in Figure 3, and the lightning current flows in a spiral around the steel core 12, so the steel core 12 is in the same direction as the direction a, a' of the lightning current. This is because it is magnetized in the direction.
本発明は、この現象を利用し、第４図に示すよ
うに、送電線１０に沿つて磁気センサ１８を移移
動し、この磁気センサ１８が磁界の向きの変化を
示した地点を落雷地点として検出する。磁気セン
サ１８としては通常のように、磁石、コイル又は
ホール効果素子を用いることができる。この磁気
センサは例えば送電線１０に吊下げられた宙乗機
又は自走機（図示せず）に取付けて送電線に沿つ
て移動することができる。 The present invention utilizes this phenomenon to move the magnetic sensor 18 along the power transmission line 10 as shown in FIG. To detect. As magnetic sensor 18, a magnet, a coil or a Hall effect element can be used as usual. This magnetic sensor can be attached to, for example, a spacecraft or a self-propelled vehicle (not shown) suspended from the power transmission line 10 and moved along the power transmission line.
このようにして磁気センサ１８が送電線１０に
沿つて移動している間落雷位置に達すると、磁界
の向きが反転するので落雷位置を正確に検出する
ことができる。従つて、この落雷位置を中心にそ
の付近の送電線部分を点検すればよいので送電線
の損傷を効率よく発見することができる。 In this manner, when the magnetic sensor 18 moves along the power transmission line 10 and reaches a lightning strike position, the direction of the magnetic field is reversed, so that the lightning strike position can be accurately detected. Therefore, damage to the power transmission line can be detected efficiently by inspecting parts of the power transmission line in the vicinity of the lightning strike location.
本発明によれば、上記のように、送電線の落雷
位置を正確に且つ高い作業性で検出することがで
き、従つて送電線の点検を効率よく行うことがで
きる実益がある。 According to the present invention, as described above, the location of a lightning strike on a power transmission line can be detected accurately and with high workability, and therefore there is the practical benefit of being able to efficiently inspect the power transmission line.
第１図は送電線の一例の横断面図、第２図は送
電線に雷電流が流れる状態を示す説明図、第３図
は送電線の磁化状態の説明図、第４図は本発明の
方法を示す説明図である。
１０……送電線、１８……磁気センサ。
Figure 1 is a cross-sectional view of an example of a power transmission line, Figure 2 is an explanatory diagram showing the state in which lightning current flows through the power transmission line, Figure 3 is an explanatory diagram of the magnetization state of the power transmission line, and Figure 4 is an illustration of the state of magnetization of the power transmission line. It is an explanatory diagram showing a method. 10...Power line, 18...Magnetic sensor.
Claims (1)
センサが磁界の向きの変化を検出した地点を落雷
位置として検出することを特徴とする送電線の落
雷位置検出方法。1. A method for detecting a lightning strike position on a power transmission line, comprising moving a magnetic sensor along the power transmission line and detecting a point where the magnetic sensor detects a change in the direction of the magnetic field as a lightning strike position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7613283A JPS59202072A (en) | 1983-05-02 | 1983-05-02 | Method for detecting lightning strike position of transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7613283A JPS59202072A (en) | 1983-05-02 | 1983-05-02 | Method for detecting lightning strike position of transmission line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59202072A JPS59202072A (en) | 1984-11-15 |
| JPH0354313B2 true JPH0354313B2 (en) | 1991-08-19 |
Family
ID=13596418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7613283A Granted JPS59202072A (en) | 1983-05-02 | 1983-05-02 | Method for detecting lightning strike position of transmission line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59202072A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5136248A (en) * | 1990-01-29 | 1992-08-04 | Niagara Mohawk Power Corporation | Method and detector for identifying insulator flashover |
-
1983
- 1983-05-02 JP JP7613283A patent/JPS59202072A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59202072A (en) | 1984-11-15 |
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