JPS5842980A - Detecting method for accident point of submarine cable - Google Patents
Detecting method for accident point of submarine cableInfo
- Publication number
- JPS5842980A JPS5842980A JP56140941A JP14094181A JPS5842980A JP S5842980 A JPS5842980 A JP S5842980A JP 56140941 A JP56140941 A JP 56140941A JP 14094181 A JP14094181 A JP 14094181A JP S5842980 A JPS5842980 A JP S5842980A
- Authority
- JP
- Japan
- Prior art keywords
- submarine cable
- accident point
- current
- bubbles
- magnetic flux
- 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
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)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、海底に布設されている海底ケーブルの事故点
検出方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for detecting fault points in submarine cables laid on the ocean floor.
海底ケーブルの従来の事故点検出方法では、海底ケーブ
ルに交流電流を流し、事故点の発熱から気泡を発生させ
、潜水者（ダイノ々−）が海底ケーブルに沿って気泡の
発生個所ご探索し、その発生個所から事故点を検出して
いる。この場合、事故点の接地抵抗値や破損形状等によ
っては気泡が全く発生しなかったり、不十分であつたり
して、気泡の探索が困難になる場合がある＠気泡の発生
量を増大させるために交流電流を増大させることは、大
掛りな通電設備を必要とし、不利である０まだ、たとえ
十分な量の気泡が発生していたとしても、気泡の発生は
見逃され易い。The conventional method for detecting fault points in submarine cables is to apply alternating current to the submarine cable, generate air bubbles from the heat generated at the fault point, and have divers (dynos) search along the submarine cable for the point where the bubbles are generated. The accident point is detected from the location where the accident occurred. In this case, depending on the ground resistance value of the accident point, the shape of the damage, etc., bubbles may not be generated at all or may be insufficient, making it difficult to search for bubbles. Increasing the alternating current requires large-scale current supply equipment, which is disadvantageous.However, even if a sufficient amount of bubbles are generated, the generation of bubbles is likely to be overlooked.
本発明の目的は・大掛りな通電設備を用いることなく、
また、事故点の見逃しを十分に回避して、事故点を容易
罠かっ能率よく検出することができる海底ケーブルの事
故点検出方法を提供すること〒ある。The purpose of the present invention is to: - without using large-scale electrical equipment;
Another object of the present invention is to provide a method for detecting a fault point in a submarine cable, which can sufficiently avoid overlooking the fault point and detect the fault point easily and efficiently.
この目的を達成するために本発明の海底ケーブルの事故
点検出方法によれば、
海底に布設されている海底ケーブルに・直流電流と交流
電流とが互いに重畳されている電流を流し、海底ケーブ
ルに沿って気泡゛の発生および磁束変化を探索すること
Ｋより、海底ケーブルの事故点を検出する。In order to achieve this object, according to the submarine cable fault detection method of the present invention, a current in which a direct current and an alternating current are superimposed is passed through the submarine cable laid on the ocean floor. By searching for the generation of bubbles and changes in magnetic flux along the cable, the fault point of the submarine cable is detected.
図面を参照して本発明の詳細な説明する。The present invention will be described in detail with reference to the drawings.
直流電源１は、容易に入手および運搬可能な蓄電池・あ
るいは充電器等から成り、一端において直流電−計２お
よび交流阻止フィル３を介して給電端子４へ接続され、
他端においてアースされている。交流電源５は変圧器６
を介して交流電流計７と直流阻止コンデンサ８との間に
接続され、交流電流計７は他端において給電端子４へ接
続され、直流阻止コンデンサ８の他端はアースされてい
る。海面９より下の海底１０に布設されている海底ケー
ブル！１は一端１２を海面９より上方の空中へ露出され
て給電端子４へ接続されている。給電端子４をケーブル
終端部１２に接続することにより、海底ケーブル１１に
、直流電流と交流電流とが互いに重畳されている電流が
流れる。海底ケーブル１１に破損等の事故点１３が鼠れ
ば、事故点１３が症ある゛いは負の電極となり・海底が
負あるいは正の電極となり、この結果、海水が電気分解
１に、事故点１３から酸素あるいは水素の気泡１４が生
じる。さらに事故点１３″Ｉ！は磁束が他の個所と異な
るので、磁束を検出できる電磁ピックアップ１５を海底
ケーブル１１に沿って移動させることにより事故点１３
を検出することができる。潜水者は電磁ピックアップ１
５およびその出力の検出計を持って海底ケーブル１１に
沿って移動し・気泡１４を目視により、および電磁ピッ
クアップ！５の検出計から磁束の異常を認識することに
より、事故点１３を検出することができる。あるいは水
中テレビカメラを海底ケーブル１１に沿って移動させ、
電磁ピックアップ１５の検出器は船上に置くことにより
、船上におけるテレビおよび検出器の観察から事故点１
３を検出することも可能である。The DC power source 1 consists of a storage battery, a charger, etc. that can be easily obtained and transported, and is connected at one end to a power supply terminal 4 via a DC voltmeter 2 and an AC blocking filter 3.
Grounded at the other end. AC power supply 5 is transformer 6
The other end of the AC ammeter 7 is connected to the power supply terminal 4, and the other end of the DC blocking capacitor 8 is grounded. A submarine cable laid on the seabed 10 below sea level 9! 1 has one end 12 exposed to the air above the sea level 9 and connected to the power supply terminal 4. By connecting the power supply terminal 4 to the cable termination part 12, a current in which a direct current and an alternating current are superimposed flows through the submarine cable 11. If an accident point 13 such as damage occurs on the submarine cable 11, the accident point 13 becomes a negative or negative electrode, and the seabed becomes a negative or positive electrode, and as a result, seawater becomes electrolyzed 1 and the accident point Oxygen or hydrogen bubbles 14 are generated from 13. Furthermore, since the magnetic flux at the fault point 13''I! is different from other locations, by moving the electromagnetic pickup 15 that can detect magnetic flux along the submarine cable 11, the fault point 13''I!
can be detected. Diver uses electromagnetic pickup 1
5 and its output detector, move along the submarine cable 11, visually check the bubbles 14, and pick up the electromagnetic bubbles! By recognizing an abnormality in the magnetic flux from the detector 5, the fault point 13 can be detected. Alternatively, move an underwater television camera along the submarine cable 11,
By placing the detector of the electromagnetic pickup 15 on the ship, the accident point 1 can be identified from the observation of the TV and detector on the ship.
It is also possible to detect 3.
第２図は直流電流と交流電流とを互いに重畳させる装置
の他の実施例を示している。第１図と同じ部分は同符号
１指示して説明を省略し、異なる部分にもいてのみ説明
する。交流阻止コイル３と給電ｉ子゛４との間の導線の
外周に結合フィル１８が設けられ、交流−送信機１９が
結合コイル１８へ接続され、これにより交流電流を直流
電流に重畳させることが！きる。FIG. 2 shows another embodiment of a device for superimposing direct current and alternating current. The same parts as in FIG. 1 are indicated by the same reference numerals 1, and the explanation will be omitted, and only the different parts will be explained. A coupling filter 18 is provided on the outer periphery of the conductor between the AC blocking coil 3 and the feeding element 4, and an AC-transmitter 19 is connected to the coupling coil 18, thereby making it possible to superimpose the alternating current on the direct current. ! Wear.
このように本発明によれば、直流電流と交流電流とを互
いに重畳して形成された電流を海底ケーブルに流し、気
泡の発生および磁束変化から事故点を検出することが１
きる。気泡は・事故点における発熱によってではなく直
流電流に因る海水の電気分解により生じるの１、事故点
の接地抵抗や破損形状等に関係なく、また簡易な通電設
備に−より・十分な気泡発生を得ることが１きる。さら
に、気泡発生の探索に並行して磁束変化も探索されるの
で、事故点の見−逃しを抑制することができ、事故点検
出の作業を容易かつ能率的なものにすることができる。As described above, according to the present invention, it is possible to flow a current formed by superimposing a direct current and an alternating current through a submarine cable, and to detect a fault point from the generation of bubbles and changes in magnetic flux.
Wear. Bubbles are generated not by heat generation at the accident point, but by electrolysis of seawater caused by direct current1. Sufficient bubble generation occurs regardless of the grounding resistance at the accident point, the shape of the damage, etc., and due to simple energizing equipment. You can get 1. Furthermore, since changes in magnetic flux are searched for in parallel with the search for bubble generation, it is possible to prevent failure points from being overlooked, and the work of detecting failure points can be made easier and more efficient.
第１図は本発明の実施例の説Ｆ！Ａ図、第２図は直流電
流と交流電流とを重畳する装置の他の実施例の回路図で
ある。
１・・・直流電源、５・・・交流電源、１０・・・海底
、１１・・・海底ケーブル、１３・・・事故点、１４・
・・気泡、１５・・・電磁ピックアップ、１９・・・交
流送信機。
第１図
第２図FIG. 1 shows an example of the embodiment of the present invention. Figures A and 2 are circuit diagrams of other embodiments of a device for superimposing direct current and alternating current. 1... DC power supply, 5... AC power supply, 10... submarine, 11... submarine cable, 13... accident point, 14.
...Bubble, 15...Electromagnetic pickup, 19...AC transmitter. Figure 1 Figure 2
Claims (1)
電流とが互いに重畳されている電流ご流し、海底ケーブ
ルに沿って気泡の発生および磁束変化な探索することに
より、海底ケーブルの事故点を検出することを特徴とす
る海底ケーブルの事故点検出方法。Detects fault points in submarine cables by passing a superimposed direct current and alternating current through submarine cables laid on the ocean floor and searching for bubbles and changes in magnetic flux along the submarine cable. A method for detecting a fault point in a submarine cable, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56140941A JPS5842980A (en) | 1981-09-09 | 1981-09-09 | Detecting method for accident point of submarine cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56140941A JPS5842980A (en) | 1981-09-09 | 1981-09-09 | Detecting method for accident point of submarine cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5842980A true JPS5842980A (en) | 1983-03-12 |
Family
ID=15280371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56140941A Pending JPS5842980A (en) | 1981-09-09 | 1981-09-09 | Detecting method for accident point of submarine cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5842980A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07115391A (en) * | 1993-10-15 | 1995-05-02 | Nec Corp | Optical submarine cable grappling method and optical submarine cable system |
| CN105572545A (en) * | 2014-10-29 | 2016-05-11 | 中国石油化工股份有限公司 | Power line fault location device and method |
| EP3264115A1 (en) * | 2016-06-28 | 2018-01-03 | Bender GmbH & Co. KG | Method for determining an isolation fault location on an electrical conductor of a submarine supply conduit |
-
1981
- 1981-09-09 JP JP56140941A patent/JPS5842980A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07115391A (en) * | 1993-10-15 | 1995-05-02 | Nec Corp | Optical submarine cable grappling method and optical submarine cable system |
| CN105572545A (en) * | 2014-10-29 | 2016-05-11 | 中国石油化工股份有限公司 | Power line fault location device and method |
| EP3264115A1 (en) * | 2016-06-28 | 2018-01-03 | Bender GmbH & Co. KG | Method for determining an isolation fault location on an electrical conductor of a submarine supply conduit |
| CN107544003A (en) * | 2016-06-28 | 2018-01-05 | 本德尔有限两合公司 | The method and alignment system of the insulation fault position on electric conductor for determining seabed supply lines |
| US10598716B2 (en) | 2016-06-28 | 2020-03-24 | Bender Gmbh & Co. Kg | Methods and locating systems for determining an insulation fault location on an electric conductor of a subsea supply line |
| CN107544003B (en) * | 2016-06-28 | 2020-07-24 | 本德尔有限两合公司 | Method and positioning system for determining the location of an insulation fault on an electrical conductor of an undersea power supply line |
| DE102016211651B4 (en) | 2016-06-28 | 2022-03-24 | Bender Gmbh & Co. Kg | Method for determining an insulation fault location on an electrical conductor of a submarine umbilical |
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