JPS632067B2 - - Google Patents
Info
- Publication number
- JPS632067B2 JPS632067B2 JP7628880A JP7628880A JPS632067B2 JP S632067 B2 JPS632067 B2 JP S632067B2 JP 7628880 A JP7628880 A JP 7628880A JP 7628880 A JP7628880 A JP 7628880A JP S632067 B2 JPS632067 B2 JP S632067B2
- Authority
- JP
- Japan
- Prior art keywords
- receiving device
- antenna
- section
- distribution line
- receiving
- 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
- 238000001514 detection method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
Description
【発明の詳細な説明】
この発明は、高電圧パルス印加法による架空配
電線路などの配電線路の事故点の検査に使用する
アンテナつきの受信装置の改良に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a receiving device with an antenna used for inspecting fault points on a power distribution line such as an overhead power distribution line using a high voltage pulse application method.
高圧架空配電線路に地絡事故が発生したとき、
変電所の接地継電器と上記配電線路の区分開閉器
により選択開閉を行ない地絡事故区間をせばめた
り、あるいは高電圧パルス発生器と前記区分開閉
器の選択開閉操作により地絡事故区間をせばめ
る。その後、このせばめられた地絡事故区間の事
故点を探査するため、高電圧パルス発生器の高電
圧パルスを、上記地絡事故配電線路に、一括して
大地との間に印加し、この高電圧により配電線路
に流れる電流を、アンテナにより検出して、地絡
事故点の探査を行なうものがある。 When a ground fault occurs on a high-voltage overhead power distribution line,
The ground fault area is narrowed by selectively opening and closing the substation's grounding relay and the sectional switch of the distribution line, or the ground fault area is narrowed by selectively opening and closing the high voltage pulse generator and the sectional switch. After that, in order to search for the fault point in this narrow ground fault section, high voltage pulses from a high voltage pulse generator are applied all at once to the ground fault distribution line, and this There is a system that uses an antenna to detect the current flowing through the distribution line due to the voltage, and searches for the point of a ground fault.
以下に図を用いてこれを説明する。 This will be explained below using figures.
第１図は、架空配電線路の事故点探査の原理を
示す図である。主コンデンサC1、出力抵抗R1、
繰り返しスイツチｓ、波形調整用コンデンサC2、
抵抗R2、および線路接地用の抵抗R3から成る高
電圧パルス発生器１により、架空配電線路２と大
地３の間にリード線４を用いて高電圧のパルスを
印加し、アンテナ５のついた受信装置６を持つた
人７が、電柱１８に昇つて事故点８を探査するよ
うにする。なおRgは地絡事故点８の接地抵抗、
Cgは事故点８から終端９までの線路容量である。
パルス発生器１からの出力電流I1は事故点８で接
地抵抗Rgを流れる電流Ig1と線路容量Cgを流れる
充電電流Icに分かれて流れる。 FIG. 1 is a diagram showing the principle of fault point detection on overhead power distribution lines. Main capacitor C 1 , output resistance R 1 ,
Repetition switch s, waveform adjustment capacitor C 2 ,
A high voltage pulse generator 1 consisting of a resistor R 2 and a line grounding resistor R 3 applies a high voltage pulse between the overhead power distribution line 2 and the ground 3 using a lead wire 4 to connect the antenna 5 to the ground. A person 7 holding a receiving device 6 climbs onto a utility pole 18 and searches for an accident point 8. Note that Rg is the grounding resistance at ground fault point 8,
Cg is the line capacity from fault point 8 to terminal 9.
The output current I 1 from the pulse generator 1 is divided into a current Ig 1 flowing through the grounding resistance Rg and a charging current Ic flowing through the line capacitance Cg at the fault point 8.
事故点探査作業者７は、アンテナ５付の受信装
置６により電流値を確認しつつ探査すれば、事故
点を通過したところでは事故電流Ig2が充電電流
Icと逆方向になり、この負の事故電流Ig2と流電
電流Icの和の電流I2が流れる。事故点８の前、後
の線路電流I1およびI2をサーチコイル式のアンテ
ナで、その電流の初期値を検出することにより、
所定時間おくれて動作するよう定められた時間ゲ
ートを開き、上記線路電流I1，I2を積分するよう
にした受信装置を用いれば、事故点を容易に発見
できる。 If the accident point exploration worker 7 searches while checking the current value using the receiving device 6 with the antenna 5, the accident current Ig 2 becomes the charging current at the point where the accident point is passed.
Current I 2 flows in the opposite direction to Ic, which is the sum of this negative fault current Ig 2 and flowing current Ic. By detecting the initial values of the line currents I 1 and I 2 before and after the fault point 8 using a search coil antenna,
If a receiving device is used that integrates the line currents I 1 and I 2 by opening a time gate that is set to operate after a predetermined time delay, the fault point can be easily found.
しかし、このような、ゲート回路、積分回路付
の受信装置でも、事故が、高抵抗地絡（たとえば
数ＫΩ〜数10KΩの地絡抵抗）事故の場合には、
問題なく事故点の探査ができるが、事故の状態
が、低抵抗地絡（たとえば、数10Ω以下）事故の
場合事故点を通過した位置では、線路電流I2がほ
とんど流れなくなり受信装置の指示もほとんど零
となり、低抵抗地絡事故点が高電圧パルス発生器
側にあると判断するのか、アンテナつきの受信装
置が十分性能を発揮していなのか不明であり、結
果的に事故点探査ができなくなる欠点があつた。 However, even with such a receiving device equipped with a gate circuit and an integrating circuit, if the accident is a high-resistance ground fault (for example, a ground fault resistance of several KΩ to several tens of KΩ),
The fault point can be detected without any problem, but if the fault is a low-resistance ground fault (for example, several tens of Ω or less), the line current I 2 will hardly flow at the point where the fault point has passed, and the receiving device will not be able to indicate any instructions. It becomes almost zero, and it is unclear whether it is determined that the low resistance ground fault point is on the high voltage pulse generator side or whether the receiving device with an antenna is exhibiting sufficient performance, and as a result, it becomes impossible to detect the fault point. There were flaws.
この発明は上記のような欠点をなくすべく、ア
ンテナつきの受信装置の探査性能をいつでも確認
することができるようにしたことを特長とする受
信装置を提供することを目的とする。 SUMMARY OF THE INVENTION In order to eliminate the above-mentioned drawbacks, it is an object of the present invention to provide a receiving device that is characterized in that the exploration performance of the receiving device with an antenna can be confirmed at any time.
この発明は、線路のパルス電流を検出するアン
テナつきの受信装置において、上記受信装置に取
付けたスイツチの操作により発生するパルス電流
を、アンテナ受信装置を接続するケーブルを通じ
て、アンテナの検出部に送るとともに受信回路に
入力し、そのパルス電流により受信装置の性能を
確認するようにしたものである。 This invention provides a receiving device with an antenna for detecting pulsed current in a railway line, in which the pulsed current generated by the operation of a switch attached to the receiving device is sent to a detection section of the antenna through a cable connecting the antenna receiving device, and is also received. The pulse current is input to the circuit and the performance of the receiving device is checked using the pulse current.
この発明によるアンテナつきの受信装置の一実
施例を第２図に示す。 An embodiment of a receiving device with an antenna according to the present invention is shown in FIG.
図において、５はアンテナ、６は受信装置、１
０は前記アンテナと受信装置を接続する接続線、
１１は、たとえばコネクタなどの接続器具であ
る。また、上記受信装置６は、信号切換回路１
２、チエツクパルスのようなチエツク信号を発生
するチエツク信号発生回路１３、チエツク用スイ
ツチ１４、受信ゲート回路より成る受信部１５、
積分回路１６、検出メータのような表示部１７に
より構成されている。 In the figure, 5 is an antenna, 6 is a receiving device, 1
0 is a connection line connecting the antenna and the receiving device;
11 is a connecting device such as a connector. Further, the receiving device 6 includes a signal switching circuit 1
2. A receiving section 15 consisting of a check signal generation circuit 13 that generates a check signal such as a check pulse, a check switch 14, and a reception gate circuit;
It is composed of an integrating circuit 16 and a display section 17 such as a detection meter.
高圧配電線路２の事故点８を探査する場合は、
アンテナ５を前記線路２に掛け、線路に流れる電
流I1またはI2をアンテナのインダクタンスにより
誘導的に検出し、接続線１０を通して受信装置６
へ入力する。このとき、信号切換回路１２はアン
テナの信号が、受信ゲート回路１５に入力される
ように動作する。この検出された信号は、受信ゲ
ート回路１５より積分回路１６に入り、検出メー
タ１７を動作させる。事故点８が低抗抵地絡事故
の場合には、事故点８を過ぎた線路の電流I2はほ
とんど流れないので、アンテナ５での検出電流も
零に等しく、従つて検出メータ１７も指示動作を
行わない。このように、検出メータ１７の指示が
零のときは、アンテナ５と受信装置６の接続が十
分ではないときや、アンテナ５の断線などの不具
合または受信装置６の内部回路が正常な性能を発
揮しない場合などにも起因する。このようなとき
に、アンテナ５を配電線路２より離し、信号切換
回路１２を切換動作させて受信ゲート回路１５と
チエツクパルス発生回路１３とを切換接続する。
そして、チエツク用スイツチ１４を操作し、チエ
ツク用パルスを発生させる。このチエツク用パル
ス電流は、検出メータ１７がある定めた値を指示
するような信号であればよい。 When searching for fault point 8 on high voltage distribution line 2,
An antenna 5 is hung on the line 2, the current I 1 or I 2 flowing on the line is inductively detected by the inductance of the antenna, and the current I 1 or I 2 flowing on the line is inductively detected and connected to the receiving device 6 through the connecting line 10.
Enter. At this time, the signal switching circuit 12 operates so that the antenna signal is input to the reception gate circuit 15. This detected signal enters the integration circuit 16 from the reception gate circuit 15 and operates the detection meter 17. If fault point 8 is a low resistance ground fault, almost no current I2 flows in the line past fault point 8, so the current detected by antenna 5 is also equal to zero, and therefore detection meter 17 also indicates No action is taken. In this way, when the indication on the detection meter 17 is zero, it means that the connection between the antenna 5 and the receiving device 6 is insufficient, there is a problem such as a disconnection of the antenna 5, or the internal circuit of the receiving device 6 is exhibiting normal performance. This may also occur if you do not. In such a case, the antenna 5 is separated from the power distribution line 2, and the signal switching circuit 12 is operated to switch and connect the receiving gate circuit 15 and the check pulse generating circuit 13.
Then, the check switch 14 is operated to generate a check pulse. This checking pulse current may be any signal that indicates a certain predetermined value on the detection meter 17.
このチエツクパルス電流は信号切換回路１２、
接続線１０、アンテナ５、接続線１０の他方の
線、受信ゲート回路１５の経路を通つて伝送さ
れ、積分器１６を通つて検出メータ１７を指示動
作させるように働く。検出メータ１７の指示が、
あらかじめ定めた値を指示するのであれば、アン
テナ５、接続線１０、受信装置６の接続状態に異
常がなく、受信装置６の探査性能も十分に得られ
ることが確認できることとなり、また、検出メー
タ１７の指示が零であれば、前記の接続状態が異
常であるか受信装置の機能状態が異常であるかの
どちらかであることを確認できる。 This check pulse current is supplied to the signal switching circuit 12,
The signal is transmitted through the connection line 10, the antenna 5, the other line of the connection line 10, and the receiving gate circuit 15, and passes through the integrator 16 to cause the detection meter 17 to operate. The indication of the detection meter 17 is
If a predetermined value is specified, it can be confirmed that there is no abnormality in the connection status of the antenna 5, connection line 10, and receiving device 6, and that the receiving device 6 has sufficient exploration performance. If the instruction No. 17 is zero, it can be confirmed that either the connection state is abnormal or the functional state of the receiving device is abnormal.
なお、信号切換回路１２の切換動作はスイツチ
１４と連動するかあるいはチエツクパルス発生回
路１３からのチエツクパルスが入力されると同時
に自動的に切換るようにしても良い。 The switching operation of the signal switching circuit 12 may be performed in conjunction with the switch 14, or may be performed automatically at the same time as the check pulse from the check pulse generating circuit 13 is input.
このようにこの発明によれば、配電線路の事故
点で探査するときに受信装置の検出メータなどの
指示が零であるとき、チエツク操作をすることに
より、受信装置の動作がチエツク出来、誤つた事
故点探査をすることがなくなる。 As described above, according to the present invention, when the detection meter of the receiving device is zero when searching for a fault point on the distribution line, the operation of the receiving device can be checked by performing a check operation, thereby preventing mistakes. There is no need to search for accident points.
第１図は、高圧パルス印加法により架空配電線
路の接地事故点を探査している例を示す図であ
る。第２図は本発明による、アンテナつきの受信
装置の実施例の構成を示す図である。
図中同一符号はそれぞれ同一または相当部分を
示す。５はアンテナ部、１３はチエツク信号発生
部、１７は表示部である。
FIG. 1 is a diagram showing an example of searching for a ground fault point on an overhead power distribution line using a high-voltage pulse application method. FIG. 2 is a diagram showing the configuration of an embodiment of a receiving device with an antenna according to the present invention. The same reference numerals in the figures indicate the same or corresponding parts. 5 is an antenna section, 13 is a check signal generating section, and 17 is a display section.
Claims (1)
記配電線路にパルス電力を供給し、それにより生
ずる配電線の電流を検出することにより上記事故
点を探査する事故点探査用受信装置において、上
記配電線に生ずる上記電流を検出するアンテナ部
と、このアンテナ部からの信号を受信して出力信
号を発生する受信部と、この受信部の出力信号に
より表示動作を行なう表示部と、上記受信部の受
信側に接続され、所定時にチエツク信号を供給す
るチエツク信号発生部とを備えたことを特徴とす
る事故点探査用受信装置。 ２ 特許請求の範囲第１項記載の事故点探査用受
信装置において、アンテナ部と受信部とは一対の
電路で結ばれており、かつチエツク信号発生部の
チエツク信号は上記電路のうちの一方に供給され
ることを特徴とする事故点探査用受信装置。[Scope of Claims] 1 Fault point exploration that detects the fault point that has occurred on the distribution line by supplying pulsed power to the distribution line and detecting the resulting current in the distribution line. In the receiving device, the antenna section detects the current generated in the distribution line, the receiving section receives the signal from the antenna section and generates an output signal, and the display performs a display operation based on the output signal of the receiving section. and a check signal generating section connected to the receiving side of the receiving section and supplying a check signal at a predetermined time. 2. In the receiving device for accident point exploration as set forth in claim 1, the antenna section and the receiving section are connected by a pair of electric lines, and the check signal from the check signal generating section is transmitted to one of the electric lines. A receiving device for accident point exploration, characterized in that it is supplied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7628880A JPS573054A (en) | 1980-06-06 | 1980-06-06 | Pulse receiver for searching fault point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7628880A JPS573054A (en) | 1980-06-06 | 1980-06-06 | Pulse receiver for searching fault point |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS573054A JPS573054A (en) | 1982-01-08 |
| JPS632067B2 true JPS632067B2 (en) | 1988-01-16 |
Family
ID=13601129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7628880A Granted JPS573054A (en) | 1980-06-06 | 1980-06-06 | Pulse receiver for searching fault point |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS573054A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7282224B1 (en) * | 2022-03-23 | 2023-05-26 | Ｎｔｔアノードエナジー株式会社 | Wiring search system and control method |
-
1980
- 1980-06-06 JP JP7628880A patent/JPS573054A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS573054A (en) | 1982-01-08 |
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