JPH0572249A - Method for locating fault point of transmission line - Google Patents
Method for locating fault point of transmission lineInfo
- Publication number
- JPH0572249A JPH0572249A JP25713491A JP25713491A JPH0572249A JP H0572249 A JPH0572249 A JP H0572249A JP 25713491 A JP25713491 A JP 25713491A JP 25713491 A JP25713491 A JP 25713491A JP H0572249 A JPH0572249 A JP H0572249A
- Authority
- JP
- Japan
- Prior art keywords
- transmission line
- point
- detected
- acoustic wave
- detection
- 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
Landscapes
- Locating Faults (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、架空送電線路の保守、
点検に際し、送電線路の事故点を標定する方法に関する
ものである。The present invention relates to maintenance of overhead power transmission lines,
It relates to the method of locating the fault point of the transmission line at the time of inspection.
【０００２】[0002]
【従来の技術】従来、架空送電線路の事故点を標定する
ためには、図８に示すように、事故時の地絡、短絡電流
によって地線に流れる電流を、送電線路に分布して取付
けられた変流器により検出し、これらの変流器により検
出された電流の分布を標定装置に集め、電流の大きさと
位相から、事故の発生した区間を標定することが行われ
ていた。2. Description of the Related Art Conventionally, in order to locate a fault point on an overhead power transmission line, as shown in FIG. 8, a current flowing through the ground line due to a ground fault or a short-circuit current at the time of distribution is distributed to the power transmission line and attached. The current distribution detected by these current transformers was collected, and the distribution of the currents detected by these current transformers was collected in a locator, and the section in which the accident occurred was identified from the magnitude and phase of the current.
【０００３】[0003]
【発明が解決しようとする課題】この従来技術の送電線
路の事故点標定方法では、分布して取付けられた変流器
により区切られた区間のうち、どの区間で事故が発生し
たかを判断することはできるが、その区間内のどの位置
で事故が発生したかを標定することはできなかった。こ
のため、当該事故が発生した区間を巡視しながら点検す
る必要があり、通常この区間は、１ｋｍから２ｋｍ程度
の比較的長い区間であるため、作業に手間と時間がかか
る欠点があった。In this prior art transmission line fault location method, it is determined which of the sections divided by the distributed current transformers has an accident. It was possible, but it was not possible to determine where in the section the accident occurred. Therefore, it is necessary to inspect while checking the section where the accident has occurred, and since this section is usually a relatively long section of about 1 km to 2 km, there is a drawback that the work is time-consuming and time-consuming.
【０００４】本発明の目的は、上記の欠点を回避し、事
故が発生した地点を正確に標定し、送電線路の保守、点
検を簡易なものとすることができる送電線路の事故点標
定方法を提供することにある。An object of the present invention is to provide a transmission line fault point locating method capable of avoiding the above-mentioned drawbacks, accurately locating a point where an accident has occurred, and simplifying maintenance and inspection of the transmission line. To provide.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記の課題を
解決するための１つの手段として、送電線路の事故によ
り発生する伝搬速度の異なる２種類の進行波を検出し、
この２つの進行波が検出地点に到達する時間の時間差か
ら、送電線路の事故の発生位置を標定することを特徴と
する送電線路の事故点標定方法を提供するものである。As one means for solving the above problems, the present invention detects two types of traveling waves having different propagation velocities, which are caused by an accident in a transmission line,
The present invention provides a method for locating a fault on a transmission line, which is characterized by locating an accident occurrence position on the transmission line from the time difference between the times when the two traveling waves reach the detection point.
【０００６】本発明は、上記の課題を解決するための他
の手段として、送電線路の事故により発生する伝搬速度
の異なる２つの進行波を検出し、この２つの進行波が検
出地点に到達する時間の時間差から送電線路の事故点の
発生位置を評定する送電線路の事故点標定方法におい
て、２つの進行波の一方の進行波の検出位置の両側で他
方の進行波を検出し、この他方の進行波の検出出力の位
相差から事故点が検出点に対していずれの方向にあるか
を検出することを特徴とする送電線路の事故点標定方法
を提供するものである。As another means for solving the above problems, the present invention detects two traveling waves having different propagation velocities generated by an accident in a transmission line, and these two traveling waves reach a detection point. In the fault location method of the transmission line, which evaluates the occurrence position of the fault point of the transmission line from the time difference of time, the other traveling wave is detected on both sides of the detection position of one traveling wave of the two traveling waves, and the other traveling wave is detected. A method for locating a fault point of a transmission line, which method detects the direction of the fault point with respect to the detection point from the phase difference of the detection output of the traveling wave.
【０００７】[0007]
【作用】送電線路の地絡、短絡事故が発生すると、一般
に、閃絡によるサージ電流波及び音響波が発生し、送電
線路上の電線を伝搬する。この場合、サージ電流波は電
気信号であり、音響波は電線上を伝搬する振動波である
ため、これらの２つの進行波の伝搬速度は異なる。この
ため、これらの２つの進行波を検出すると、２つの進行
波の検出地点までの到達時間の時間差Δｔが観測され
る。このとき、サージ電流波の伝搬速度をυA 、音響波
の伝搬速度をυB とすると、検出地点から事故点までの
距離Ｌは、Ｌ＝（υA ・υB ）Δｔ／（υA −υB ）に
より求めることができる。従って、本発明のように、サ
ージ電流波と音響波の伝搬時間差Δｔを検出すると、検
出地点から事故点までの距離を検出することができるた
め、送電線路の事故点を標定することができる。When a ground fault or a short-circuit accident occurs in the power transmission line, a surge current wave and an acoustic wave due to a flash fault are generally generated and propagate in the electric wire on the power transmission line. In this case, since the surge current wave is an electric signal and the acoustic wave is an oscillating wave propagating on the electric wire, the propagation speeds of these two traveling waves are different. Therefore, when these two traveling waves are detected, a time difference Δt of arrival times of the two traveling waves to the detection point is observed. At this time, if the propagation velocity of the surge current wave is υ A and the propagation velocity of the acoustic wave is υ B , the distance L from the detection point to the accident point is L = (υ A · υ B ) Δt / (υ A − υ B ). Therefore, as in the present invention, when the propagation time difference Δt between the surge current wave and the acoustic wave is detected, the distance from the detection point to the accident point can be detected, so that the accident point of the power transmission line can be located.
【０００８】また、２つの進行波の一方の進行波の検出
位置の両側で他方の進行波検出すると、この他方の進行
波の位相差から、時間差Δｔにより検出された事故点か
ら検出地点までの距離が、検出地点の左右のいずれの方
向への距離であるかを把握することができるため、事故
点の標定がより容易なものとなる。Further, when the traveling wave of the other traveling wave is detected on both sides of the traveling wave detection position of one of the traveling waves, the phase difference of the traveling wave of the other traveling wave from the accident point detected by the time difference Δt to the detection point is detected. Since it is possible to know which direction the distance is to the left or right of the detection point, it becomes easier to locate the accident point.
【０００９】[0009]
【実施例】本発明の実施例を図面を参照して詳細にのべ
ると、図１は本発明の標定方法を実施する状態を概略的
に示し、図示の実施例では、架空送電線１０について本
発明の方法により事故点を標定している。この実施例で
は、図１及び図２に示すように、架空送電線１０の一部
に取付けられたサージ電流波検出センサ１２と音響波検
出センサ１４により、架空送電線１０の事故により発生
し架空送電線１０上を伝搬するサージ電流波と音響波を
検出する。なお、サージ電流波検出センサ１２として
は、例えばコイルを用い、音響波センサ１４としては、
例えばマイクを用いることができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings, an embodiment of the present invention will be described in detail. FIG. 1 schematically shows a state in which the orientation method of the present invention is carried out. Accident points are located by the method of the invention. In this embodiment, as shown in FIG. 1 and FIG. 2, a surge current wave detection sensor 12 and an acoustic wave detection sensor 14 attached to a part of the overhead power transmission line 10 cause the overhead power transmission line 10 to generate a A surge current wave and an acoustic wave propagating on the power transmission line 10 are detected. A coil is used as the surge current wave detection sensor 12, and an acoustic wave sensor 14 is used as the acoustic wave sensor 14.
For example, a microphone can be used.
【００１０】サージ電流波検出センサ１２により検出さ
れたサージ電流波の検出信号と、音響波検出センサ１４
により検出された音響波の検出信号は、図３に示すよう
に、サージ電流波検出回路１６Ａ及び音響波検出回路１
６Ｂにより、波形整形されて検出出力として出力され
る。この場合、サージ電流波と音響波は、架空送電線１
０上を伝搬する伝搬速度が異なるため、サージ電流波が
サージ電流波検出センサ１２までに到達する時間と、音
響波が音響波検出センサ１４までに到達する時間との間
に、図４に示すような時間差Δｔが生ずる。この時間差
Δｔを、サージ電流波検出回路１６Ａ及び音響波検出回
路１６Ｂに電気的に接続され検出回路１６Ａ及び１６Ｂ
から出力された検出信号を読み取る時間差比較回路１８
により検出する。このようにして、時間差Δｔを検出す
ることにより、サージ電流波検出センサ１２及び音響波
検出センサ１４から図１に示す送電線１０の事故点２０
までの距離Ｌを、Ｌ＝（υB （音響波の伝搬速度）・υ
A （サージ電流波の伝搬速度）Δｔ／（υA −υB ）に
より導くことができるため、事故点２０の位置を正確に
評定することが可能となる。The detection signal of the surge current wave detected by the surge current wave detection sensor 12 and the acoustic wave detection sensor 14
As shown in FIG. 3, the detection signal of the acoustic wave detected by the surge current wave detection circuit 16A and the acoustic wave detection circuit 1
The waveform is shaped by 6B and output as a detection output. In this case, the surge current wave and the acoustic wave are
Since the propagation velocities propagating over 0 are different, the surge current wave reaches the surge current wave detection sensor 12 and the acoustic wave reaches the acoustic wave detection sensor 14 between the time shown in FIG. Such a time difference Δt occurs. This time difference Δt is electrically connected to the surge current wave detection circuit 16A and the acoustic wave detection circuit 16B and is detected by the detection circuits 16A and 16B.
Time difference comparison circuit 18 for reading the detection signal output from
To detect. In this way, by detecting the time difference Δt, the surge current wave detection sensor 12 and the acoustic wave detection sensor 14 cause the accident point 20 of the power transmission line 10 shown in FIG.
The distance L to L = (υ B (acoustic wave propagation velocity) · υ
Since it can be guided by A (propagation velocity of surge current wave) Δt / (υ A −υ B ), the position of the accident point 20 can be accurately evaluated.
【００１１】この事故点２０までの距離Ｌは、図５に示
すように、時間差比較回路１８に電気的に接続された演
算表示回路２２により、サージ電流波検出回路１２及び
音響検出センサ１４が取付けられた架空送電線１０の近
辺で演算表示され、保守点検者が、このようにして表示
された事故点２０までの距離Ｌを確認することにより、
事故点２０を標定する。As shown in FIG. 5, the distance L to the accident point 20 is set by attaching the surge current wave detection circuit 12 and the sound detection sensor 14 by means of the arithmetic display circuit 22 electrically connected to the time difference comparison circuit 18. By calculating and displaying in the vicinity of the overhead power transmission line 10 thus displayed, and the maintenance inspector confirming the distance L to the accident point 20 thus displayed,
Locate the accident point 20.
【００１２】図６は、事故点２０までの距離Ｌを演算・
表示する他の手段が示され、図６の実施例では、時間差
比較回路１８に伝送装置２０及び通信回路２２を介して
電気的に接続され時間差比較回路１８から伝送される時
間差Δｔに関する情報を演算表示する中央処理装置２４
を備え、この中央処理装置２４は架空送電線１０から離
れた箇所に位置する保守担当者の手元に設置してもよ
い。この場合、現場から離れた箇所で、事故点２０の位
置を評定することができるため、架空送電線１０の保
守、点検が容易となる。なお、図示の実施例では、事故
点２０までの距離Ｌの演算と表示を共に保守点検者の手
元で行ったが、距離Ｌの演算は送電線１０上で行い、そ
の結果得られた数値を保守点検者の手元に伝送して表示
してもよい。さらに、サージ波検出センサ１２及び音響
波検出センサ１４により検出された検出信号を、直接、
保守点検者の手元に伝送し時間差比較回路１８以降の行
程を保守点検者の手元で行ってもよい。FIG. 6 calculates the distance L to the accident point 20.
Another means for displaying is shown, and in the embodiment of FIG. 6, information regarding the time difference Δt transmitted from the time difference comparison circuit 18 and electrically connected to the time difference comparison circuit 18 via the transmission device 20 and the communication circuit 22 is calculated. Central processing unit 24 to display
The central processing unit 24 may be installed in the hand of a maintenance person who is located at a location distant from the overhead power transmission line 10. In this case, since the position of the accident point 20 can be evaluated at a location away from the site, maintenance and inspection of the overhead power transmission line 10 are facilitated. In the illustrated embodiment, the calculation and the display of the distance L to the accident point 20 are both performed by the maintenance inspector. However, the calculation of the distance L is performed on the power transmission line 10 and the numerical value obtained as a result is calculated. It may be transmitted and displayed to the maintenance personnel. Further, the detection signals detected by the surge wave detection sensor 12 and the acoustic wave detection sensor 14 are directly
It may be transmitted to the maintenance inspector and the steps after the time difference comparison circuit 18 may be performed by the maintenance inspector.
【００１３】次に、本発明の更に他の実施例が、図７に
示され、この実施例では、サージ電流波検出センサ１２
の左右の架空送電線１０に２つの音響波検出センサ１４
Ａ、１４Ｂを取付け、架空送電線１０の事故により発生
する１つのサージ電流波及び２つの音響波を検出する。
この２つの音響波検出センサは、２つの音響波検出回路
１６Ｂを介して、位相比較回路２６に電気的に接続さ
れ、この位相比較回路２６により、音響波の２つの検出
出力の位相差を検出する。このようにして検出された位
相差から、事故点２０が、音響波検出センサ１４に対し
て左右いずれの方向にあるかを検出して、事故点２０を
標定する。これにより、サージ電流波検出センサ１２及
び音響波検出センサ１４から事故点２０までの距離Ｌだ
けでなく、その距離Ｌがどちらの方向へ向けての距離で
あるかを確認することができるため、事故点２０を一層
正確に標定することができる。また、この実施例では、
事故点２０までの距離Ｌは、図７に示すように、時間差
比較回路１８を、サージ電流波検出回路１６Ａと１つの
音響波検出回路１４Ｂに電気的に接続することにより、
測定される。なお、図示の実施例では、音響波検出セン
サ１４を設けて、音響波の位相差を検出したが、２つの
サージ電流波検出センサを設けて、サージ電流検出波の
位相差を検出することにより、事故点２０の方向を標定
してもよい。Next, still another embodiment of the present invention is shown in FIG. 7, in which the surge current wave detection sensor 12 is used.
Two acoustic wave detection sensors 14 on the overhead transmission lines 10 on the left and right of the
A and 14B are attached, and one surge current wave and two acoustic waves generated due to an accident of the overhead power transmission line 10 are detected.
The two acoustic wave detection sensors are electrically connected to the phase comparison circuit 26 via the two acoustic wave detection circuits 16B, and the phase comparison circuit 26 detects the phase difference between the two detection outputs of the acoustic waves. To do. From the phase difference thus detected, it is detected which of the left and right directions the accident point 20 is with respect to the acoustic wave detection sensor 14, and the accident point 20 is located. This makes it possible to confirm not only the distance L from the surge current wave detection sensor 12 and the acoustic wave detection sensor 14 to the accident point 20 but also in which direction the distance L is. The accident point 20 can be located more accurately. Also, in this example,
As shown in FIG. 7, the distance L to the accident point 20 is obtained by electrically connecting the time difference comparison circuit 18 to the surge current wave detection circuit 16A and one acoustic wave detection circuit 14B.
To be measured. In the illustrated embodiment, the acoustic wave detection sensor 14 is provided to detect the phase difference between the acoustic waves, but two surge current wave detection sensors are provided to detect the phase difference between the surge current detection waves. The direction of the accident point 20 may be located.
【００１４】[0014]
【発明の効果】本発明によれば、上記のように、送電線
路の事故により発生する２つの進行波の検出地点までの
到達時間の時間差を検出することにより、検出地点から
事故点までの距離を把握することができるため、事故点
を正確に標定することができる上に、２つの進行波の位
相差から事故点が検出地点に対していずれの方向にある
かをも確認することができるため、より簡易かつ正確に
送電線路の事故点を標定することができ、送電線路の保
守、点検が容易となる実益がある。As described above, according to the present invention, the distance from the detection point to the accident point is detected by detecting the time difference between the arrival times of the two traveling waves generated by the transmission line accident to the detection point. Since the accident point can be accurately located, it is possible to confirm in which direction the accident point is with respect to the detection point from the phase difference between the two traveling waves. Therefore, the fault point of the transmission line can be located more easily and accurately, and the maintenance and inspection of the transmission line can be facilitated.
【図１】本発明の事故点標定方法の実施状態を示す概略
図である。FIG. 1 is a schematic diagram showing an implementation state of an accident point locating method of the present invention.
【図２】本発明の方法に用いる検出センサの取付状態を
示す拡大図である。FIG. 2 is an enlarged view showing a mounting state of a detection sensor used in the method of the present invention.
【図３】本発明の方法に用いる検出センサの出力系統図
である。FIG. 3 is an output system diagram of a detection sensor used in the method of the present invention.
【図４】本発明の方法により検出された２つの進行波の
出力を表す波形図である。FIG. 4 is a waveform diagram showing the outputs of two traveling waves detected by the method of the present invention.
【図５】本発明の方法に用いる検出センサの第２の出力
系統図である。FIG. 5 is a second output system diagram of the detection sensor used in the method of the present invention.
【図６】本発明の方法に用いる検出センサの第３の出力
系統図である。FIG. 6 is a third output system diagram of the detection sensor used in the method of the present invention.
【図７】本発明の第２の実施例の実施状態を示す概略系
統図である。FIG. 7 is a schematic system diagram showing an implementation state of a second embodiment of the present invention.
【図８】従来の事故点標定方法の実施状態を示す該略図
である。FIG. 8 is a schematic view showing an implementation state of a conventional accident point locating method.
１０ 架空送電線 １２ サージ電流波検出センサ １４ 音響波検出センサ １６Ａ サージ電流波検出回路 １６Ｂ 音響波検出回路 １８ 時間差比較回路 ２４ 中央処理装置 ２６ 位相比較回路 10 Overhead Transmission Line 12 Surge Current Wave Detection Sensor 14 Acoustic Wave Detection Sensor 16A Surge Current Wave Detection Circuit 16B Acoustic Wave Detection Circuit 18 Time Difference Comparison Circuit 24 Central Processing Unit 26 Phase Comparison Circuit
Claims (2)
の異なる２種類の進行波を検出し、前記２つの進行波が
検出地点に到達する時間の時間差から、前記送電線路の
事故点の発生位置を標定することを特徴とする送電線路
の事故点標定方法。1. A position where an accident point on the power transmission line occurs based on a time difference between two types of traveling waves having different propagation velocities generated by an accident on the power transmission line and reaching the detection point. A fault location method for transmission lines, which is characterized by locating.
位置の両側で他方の進行波を検出し、前記他方の進行波
の検出出力の位相差から前記事故点が検出点に対してい
ずれの方向にあるかを検出することを特徴とする請求項
１に記載の送電線路の事故点標定方法。2. The traveling wave of the other traveling wave is detected at both sides of the traveling wave detection position of the two traveling waves, and the accident point is detected with respect to the detection point from the phase difference of the detection output of the other traveling wave. The method for locating a fault on a power transmission line according to claim 1, wherein the direction is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25713491A JPH0572249A (en) | 1991-09-10 | 1991-09-10 | Method for locating fault point of transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25713491A JPH0572249A (en) | 1991-09-10 | 1991-09-10 | Method for locating fault point of transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0572249A true JPH0572249A (en) | 1993-03-23 |
Family
ID=17302198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25713491A Pending JPH0572249A (en) | 1991-09-10 | 1991-09-10 | Method for locating fault point of transmission line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0572249A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7575371B1 (en) * | 2004-11-11 | 2009-08-18 | Fieldmetrics, Inc | Temperature sensor and extensometer |
| CN102288869A (en) * | 2011-05-10 | 2011-12-21 | 山东大学 | Single-end traveling wave fault ranging method for power transmission line |
| CN110133445A (en) * | 2019-06-10 | 2019-08-16 | 集美大学 | A kind of submarine cable fault distance-finding method, terminal device and storage medium |
-
1991
- 1991-09-10 JP JP25713491A patent/JPH0572249A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7575371B1 (en) * | 2004-11-11 | 2009-08-18 | Fieldmetrics, Inc | Temperature sensor and extensometer |
| CN102288869A (en) * | 2011-05-10 | 2011-12-21 | 山东大学 | Single-end traveling wave fault ranging method for power transmission line |
| CN110133445A (en) * | 2019-06-10 | 2019-08-16 | 集美大学 | A kind of submarine cable fault distance-finding method, terminal device and storage medium |
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