KR20030045253A - Development of installation method in combinded transmission lines with underground power cable - Google Patents

Development of installation method in combinded transmission lines with underground power cable Download PDF

Info

Publication number
KR20030045253A
KR20030045253A KR1020010075665A KR20010075665A KR20030045253A KR 20030045253 A KR20030045253 A KR 20030045253A KR 1020010075665 A KR1020010075665 A KR 1020010075665A KR 20010075665 A KR20010075665 A KR 20010075665A KR 20030045253 A KR20030045253 A KR 20030045253A
Authority
KR
South Korea
Prior art keywords
cable
transmission line
underground
ground
junction box
Prior art date
Application number
KR1020010075665A
Other languages
Korean (ko)
Inventor
하체웅
김정년
Original Assignee
엘지전선 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 엘지전선 주식회사 filed Critical 엘지전선 주식회사
Priority to KR1020010075665A priority Critical patent/KR20030045253A/en
Publication of KR20030045253A publication Critical patent/KR20030045253A/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle

Landscapes

  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

PURPOSE: An installing method is provided to be capable of minimizing an affection of a torpedo attack forced to a cable conductor, a cable sheath and a protection layer by inducing the torpedo attack to a ground. CONSTITUTION: Insulation connection parts are formed at both ends of the first cable connection box(4) and at both ends of the second cable connection box(4) from a cable head(3) of an underground power transmission line, and an anti-corrosion layer protection device(6) is formed at each of insulation connection parts at a direction of the cable head(3). Insulation connection parts of an opposite direction of the cable head(3) are directly connected to the ground(5).

Description

혼합 송전선로에서의 지중 케이블의 포설 방법{Development of installation method in combinded transmission lines with underground power cable}Development of installation method in combinded transmission lines with underground power cable}

본 발명은 가공 송전선로와 지중 송전선로가 연계되어 형성되는 혼합 송전선로에 있어서, 지중 송전선로의 케이블 중앙부의 케이블 접속함의 일 단부가 접지되고 다른 단부가 개방되는 편단 접지하여 가공 송전선로를 통해 지중 송전선로의 케이블 중앙부로 침입하는 뇌격을 대지로 유도하고, 지중 송전선로의 케이블 헤드로부터 첫번째 케이블 접속함 및 두번째 케이블 접속함의 케이블 헤드 방향의 각 단부에 방식층 보호 장치를 형성하고 반대 방향의 각 단부는 대지에 직접 접지하여 상기 케이블 헤드에 인접한 케이블에 가해진 뇌격을 유도하여 가공 송전선로를 통해 지중 송전선로로 칩입하는 뇌격의 영향을 저감하는 지중 케이블의 포설 방법에 관한 것이다.The present invention is a mixed transmission line formed by linking the overhead transmission line and the underground transmission line, one end of the cable connection box of the cable center portion of the underground transmission line is grounded and the other end is open to ground through the overhead transmission line Guides the lightning strikes into the cable center of the transmission line to the ground, and forms an anticorrosive layer protection device at each end of the cable head of the underground transmission line in the direction of the cable head of the first cable junction box and the second cable junction box. The present invention relates to a method for laying underground cables, which directly grounds the ground to induce lightning strikes applied to the cables adjacent to the cable heads, thereby reducing the influence of lightning strikes into the underground transmission lines through overhead transmission lines.

종래에는 주로 가공 송전선로를 이용하여 전력을 송전하였으나 도시가 급격히 팽창하여 전력 수요가 증가되거나 가공 송전선로를 새로 건설하기 어려운 지역을 통해 송전할 필요성이 증대되었다. 따라서 기존의 가공 송전선로에 추가로 지중 송전선로가 설치되어 혼합 송전선로로 변경되거나, 처음부터 가공 송전선로와 지중 송전선로가 연계되어 설치되는 혼합 송전선로가 신설되는 경우가 증가되었다.Conventionally, power transmission is mainly performed using overhead transmission lines, but the city expands rapidly, and the demand for power is increased, or the need to transmit power through areas where it is difficult to newly construct overhead transmission lines has increased. Therefore, the underground transmission line was installed in addition to the existing overhead transmission line and changed to a mixed transmission line, or the hybrid transmission line installed in conjunction with the overhead transmission line and the underground transmission line was increased from the beginning.

이러한 혼합 송전선로는 지중 송전선로의 지중 케이블 및 방식층을 보호하기 위하여 크로스 본드 접지 공법으로 케이블 시스를 보호하거나, 크로스 본드 접지 공법이 여의치 않을 경우에는 케이블 헤드에 가장 가까운 케이블 접속함을 편단 접지하고 방식층 보호 장치를 형성하여 지중 송전선로를 보호하였으나 가공 송전선로를 통하여 지중 송전선로로 칩입하는 뇌격에 의하여 지중 케이블의 케이블 도체, 케이블 시스, 방식층 보호 장치 등이 파손되거나 열화된다는 문제점이 있다.The mixed transmission line protects the cable sheath with the cross bond grounding method to protect the underground cable and the anticorrosive layer of the underground transmission line, or if the cross bond grounding method is not available, the cable junction box closest to the cable head is single-sided and Although the underground transmission line was protected by forming an anticorrosive layer protection device, a cable conductor, a cable sheath, an anticorrosion layer protection device, and the like of the underground cable are damaged or deteriorated by a lightning strike into the underground transmission line through the overhead transmission line.

본 발명의 목적은 지중 송전선로의 케이블 중앙부의 케이블 접속함의 일 단부가 접지되고 다른 단부가 개방되는 편단 접지하며, 지중 송전선로의 케이블 헤드로부터 첫번째 케이블 접속함 및 두번째 케이블 접속함의 케이블 헤드 방향의 각 단부에 방식층 보호 장치를 형성하고 반대 방향의 각 단부는 대지에 직접 접지하도록 구성되어 가공 송전선로를 통하여 지중 송전선로로 침입하는 뇌격을 대지로 유도하여 지중 케이블의 케이블 도체, 케이블 시스, 방식층 보호 장치 등에 가해지는 뇌격의 영향을 최소화하는 혼합 송전선로에서의 지중 케이블의 포설 방법을 제공하는데 있다.An object of the present invention is a one-sided ground in which one end of the cable junction box of the cable center of the underground transmission line is grounded and the other end is opened, and the angle of the cable heads of the first cable junction box and the second cable junction box from the cable head of the underground transmission line Anti-corrosion layer protection device is formed at the end, and each end in the opposite direction is configured to directly ground to the ground, thereby inducing lightning strikes into the underground transmission line through the overhead transmission line to the ground, thereby providing cable conductors, cable sheaths, and corrosion protection layer of underground cables. The present invention provides a method for laying underground cables in a mixed transmission line that minimizes the impact of lightning strikes on protective devices.

도 1은 종래의 지중 송전선로의 구조도1 is a structural diagram of a conventional underground transmission line

도 2는 본 발명의 지중 송전선로의 구조도2 is a structural diagram of an underground transmission line of the present invention

도 3은 본 발명의 다른 지중 송전선로의 구조도3 is a structural diagram of another underground transmission line of the present invention

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

1 : 지중 케이블1: underground cable

2 : 전원단2: power

3 : 케이블 헤드3: cable head

4 : 케이블 접속함4: cable connection box

5 : 접지5: ground

6 : 방식층 보호 장치6: anticorrosive layer protection device

7 : 절연통 보호 장치7: insulator protection device

본 발명의 혼합 송전선로에서의 지중 케이블의 포설 방법은 지중 송전선로의 지중 케이블(1) 중앙부의 케이블 접속함(4)의 일 단부가 접지(5)되고 다른 단부가 개방되어 편단 접지하며, 지중 송전선로의 케이블 헤드(3)로부터 첫번째 케이블 접속함(4)의 양 단부와 두번째 케이블 접속함(4)의 양 단부에 절연 접속부를 형성하고 상기 케이블 헤드 방향의 각 절연 접속부에 방식층 보호 장치(6)를 형성하고 반대 방향의 각 절연 접속부는 대지에 직접 접지(5)하도록 구성되는 특징이 있다.In the method for laying underground cables in the mixed transmission line of the present invention, one end of the cable junction box 4 at the center of the underground cable 1 of the underground power transmission line is grounded (5) and the other end is open and one-sided ground, Insulating joints are formed at both ends of the first cable junction box 4 and at both ends of the second cable junction box 4 from the cable head 3 of the power transmission line, and an anticorrosive layer protection device is formed at each of the insulation connections in the direction of the cable head. 6) and each insulated connection in the opposite direction is configured to directly ground 5 to the earth.

도면과 실시예를 참조하여 본 발명을 상세하게 설명한다.The present invention will be described in detail with reference to the drawings and examples.

도 1은 종래의 혼합 송전선로에서의 지중 송전선로의 구조를 도시한 것이고 도 2는 본 발명에 의한 지중 송전선로의 구조를 도시한 것이고 도 3은 본 발명에 의한 다른 지중 송전선로의 구조를 도시한 것이다.1 illustrates the structure of an underground transmission line in a conventional mixed transmission line, FIG. 2 illustrates the structure of an underground transmission line according to the present invention, and FIG. 3 illustrates the structure of another underground transmission line according to the present invention. It is.

혼합 송전선로에서 전원단(2)과 케이블 헤드(3) 사이에서 지중 케이블(1)이형성되고 상기 지중 케이블(1)의 일정 구간마다 케이블 접속함(4)이 형성되어 지중 송전선로가 설치되는데, 상기와 같이 형성된 지중 케이블(1)중에서 케이블 중앙부가 가공 송전선로를 통해 지중 송전선로로 침입하는 뇌격의 영향을 주로 받게 된다.In the mixed transmission line, the underground cable 1 is formed between the power supply terminal 2 and the cable head 3, and the cable junction box 4 is formed at a predetermined section of the underground cable 1 so that the underground transmission line is installed. In the underground cable 1 formed as described above, the central portion of the cable is mainly affected by the lightning strike that enters the underground transmission line through the overhead transmission line.

따라서 지중 케이블(1)의 케이블 중앙부에 침입하는 뇌격을 대지로 유도하기 위하여 상기 지중 케이블(1)의 케이블 중앙부의 케이블 접속함(4)들중에서 어느 한 개의 케이블 접속함(4)이 편단 접지된다. 즉, 상기 케이블 접속함(4)의 일 단부는 대지에 접지(5)되고 다른 단부는 접지하지 않은 채로 개방되는 편단 접지 구조를 형성한다.Therefore, one of the cable junction boxes 4 among the cable junction boxes 4 of the cable center portion of the underground cable 1 is grounded one-sided to induce lightning strikes invading the cable center portion of the underground cable 1 to the ground. . That is, one end of the cable junction box 4 forms a one-sided grounding structure in which ground 5 is grounded to the ground and the other end is opened without grounding.

상기와 같이 지중 케이블(1)의 케이블 중앙부의 케이블 접속함(4)을 편단 접지하여 가공 송전선로를 통해 지중 송전선로의 지중 케이블 중앙부로 침입하는 뇌격을 대지로 유도하여 상기 지중 케이블(1)의 케이블 중앙부에 미치는 뇌격의 영향을 최소화하므로서 지중 케이블(1)의 케이블 중앙부의 케이블 도체, 케이블 접속함(4), 방식층 보호 장치(6), 절연통 보호 장치(7)의 파손이나 열화를 방지한다.As described above, the cable connection box 4 of the cable center portion of the underground cable 1 is grounded one-sided to induce lightning strikes into the ground through the overhead transmission line to the underground cable center portion of the underground transmission line to the ground. Minimizes the impact of lightning on the center of the cable, preventing damage and deterioration of cable conductors, cable junction boxes (4), anticorrosive layer protection devices (6), and insulation tube protection devices (7) in the cable center of underground cables (1) do.

그런데 지중 송전선로의 케이블 헤드(3) 인근의 케이블 접속함(4)을 편단 접지하는 경우, 상기 케이블 헤드(3)에 인접한 지중 케이블(1)이 가공 송전선로를 통해 지중 송전선로로 침입하는 뇌격의 영향을 상당히 받게 되며, 특히 상기 케이블 헤드(3)로부터 첫번째 케이블 접속함(4)과 두번째 케이블 접속함(4)에 각각 형성된 절연통 보호 장치(7)가 심각한 영향을 받게 된다.However, in the case where the cable junction box 4 near the cable head 3 of the underground transmission line is grounded one-sided, the underground cable 1 adjacent to the cable head 3 enters the underground transmission line through the overhead transmission line. The insulation tube protection device 7 formed in each of the first cable junction box 4 and the second cable junction box 4 from the cable head 3 is severely affected.

따라서 상기 케이블 헤드(3)에 인접한 지중 케이블(1)에 영향을 미치는 뇌격을 대지로 유도하기 위하여 상기 케이블 헤드(3)로부터 첫번째 케이블 접속함(4)의 양 단부와 두번째 케이블 접속함(4)의 양 단부에 각각 절연 접속부를 형성하고, 상기 케이블 헤드(3) 방향의 각 절연 접속부에 방식층 보호 장치(6)를 형성하고 반대 방향의 각 절연 접속부는 대지에 직접 접지(5)한다. 즉, 상기 복수개의 케이블 접속함(4)의 일 단부는 방식층 보호 장치(6)가 형성되고 다른 단부는 대지에 접지(5)되는 접지 구조를 형성한다.Thus, both ends of the first cable junction box 4 and the second cable junction box 4 from the cable head 3 to induce lightning strikes affecting the underground cable 1 adjacent to the cable head 3 to the ground. Insulating connections are formed at both ends of the insulating layer, and an anticorrosive layer protection device 6 is formed at each of the insulating connections in the direction of the cable head 3, and each of the insulating connections in the opposite direction is directly grounded to the ground. That is, one end of the plurality of cable connection box 4 forms a grounding structure in which the anticorrosive layer protection device 6 is formed and the other end is grounded 5 to the ground.

상기와 같이 상기 케이블 헤드(3)로부터 첫번째 케이블 접속함(4) 및 두번째 케이블 접속함(4)의 케이블 헤드(3) 방향의 각 단부에 방식층 보호 장치(6)를 형성하고 반대 방향의 각 단부는 대지에 직접 접지(5)하여 상기 케이블 헤드(3)에 인접한 지중 케이블(1)에 영향을 미치는 뇌격을 대지로 유도하므로서 상기 케이블 헤드(3)에 인접한 지중 케이블(1)의 케이블 도체, 케이블 접속함(4), 방식층 보호 장치(6)에 미치는 뇌격의 영향을 저감하고 특히 상기 케이블 헤드(3)로부터 첫번째 케이블 접속함(4)과 두번째 케이블 접속함(4)의 절연통 보호 장치(7)의 파손을 방지한다.As described above, the anticorrosive layer protection device 6 is formed at each end in the direction of the cable head 3 of the first cable junction box 4 and the second cable junction box 4 from the cable head 3 and the angles in the opposite directions. The cable conductors of the underground cable 1 adjacent to the cable head 3, the end of which is grounded directly to the ground (5) to induce lightning strikes affecting the underground cable (1) adjacent to the cable head (3), Insulation protection device of the first cable junction box (4) and the second cable junction box (4) from the cable head (3) to reduce the impact of the lightning strike on the cable junction box (4), the anticorrosive layer protection device (6) (7) to prevent damage.

본 발명에 의한 지중 케이블의 포설 방법은 케이블 중앙부의 케이블 접속함의 일 단부가 접지되고 다른 단부가 개방되는 편단 접지하며, 지중 송전선로의 케이블 헤드로부터 첫번째 케이블 접속함 및 두번째 케이블 접속함의 케이블 헤드 방향의 각 단부에 방식층 보호 장치를 형성하고 반대 방향의 각 단부는 대지에 직접접지하도록 구성되어 가공 송전선로를 통해 지중 송전선로로 침입하는 뇌격을 대지로 유도하여 지중 케이블의 케이블 도체, 케이블 접속함, 방식층 보호 장치, 절연통 보호 장치의 파손이나 열화를 방지하는 효과가 있다.The underground cable installation method according to the present invention has a one-sided ground where one end of the cable junction box at the center of the cable is grounded and the other end is opened, and the cable head of the first cable junction box and the second cable junction box is moved from the cable head of the underground transmission line. Anti-corrosion layer protection device is formed at each end, and each end in the opposite direction is configured to directly ground to the ground, so that the lightning strikes into the underground transmission line through the overhead transmission line to the ground, the cable conductor of the underground cable, cable junction box, There is an effect of preventing damage or deterioration of the anticorrosive layer protection device and the insulation cylinder protection device.

Claims (2)

가공 송전선로와 지중 송전선로가 연계되어 형성되는 혼합 송전선로에 있어서,In the mixed transmission line formed by linking the overhead transmission line and underground transmission line, 지중 송전선로의 지중 케이블(1) 중앙부의 케이블 접속함(4)의 일 단부가 접지(5)되고 다른 단부가 개방되는 편단 접지하도록 구성되는 것을 특징으로 하는 혼합 송전선로에서의 지중 케이블의 포설 방법.A method of laying underground cables in a mixed transmission line, characterized in that one end of the cable connection box 4 at the center of the underground cable 1 of the underground power transmission line is grounded 5 and the one end grounded at the other end is opened. . 가공 송전선로와 지중 송전선로가 연계되어 형성되는 혼합 송전선로에 있어서,In the mixed transmission line formed by linking the overhead transmission line and underground transmission line, 지중 송전선로의 케이블 헤드(3)로부터 첫번째 케이블 접속함(4)의 양 단부와 두번째 케이블 접속함(4)의 양 단부에 절연 접속부를 형성하고, 상기 케이블 헤드 방향의 각 절연 접속부에 방식층 보호 장치(6)를 형성하고 반대 방향의 각 절연 접속부는 대지에 직접 접지(5)하도록 구성되는 것을 특징으로 하는 혼합 송전선로에서의 지중 케이블의 포설 방법.Insulated connections are formed at both ends of the first cable junction box 4 and at both ends of the second cable junction box 4 from the cable head 3 of the underground power transmission line, and the corrosion protection layer is protected at each of the insulation connections in the direction of the cable head. A method of laying underground cables in a mixed transmission line, comprising a device (6) and each insulated connection in the opposite direction is configured to directly ground (5) to the ground.
KR1020010075665A 2001-12-01 2001-12-01 Development of installation method in combinded transmission lines with underground power cable KR20030045253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020010075665A KR20030045253A (en) 2001-12-01 2001-12-01 Development of installation method in combinded transmission lines with underground power cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020010075665A KR20030045253A (en) 2001-12-01 2001-12-01 Development of installation method in combinded transmission lines with underground power cable

Publications (1)

Publication Number Publication Date
KR20030045253A true KR20030045253A (en) 2003-06-11

Family

ID=29572537

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020010075665A KR20030045253A (en) 2001-12-01 2001-12-01 Development of installation method in combinded transmission lines with underground power cable

Country Status (1)

Country Link
KR (1) KR20030045253A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160043771A (en) * 2014-10-14 2016-04-22 한국수력원자력 주식회사 Non-loop common ground apparetus for preventing damage of cable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6345568A (en) * 1986-08-13 1988-02-26 Showa Electric Wire & Cable Co Ltd Abnormality detection system for electric power cable sheath
JPH10206486A (en) * 1997-01-24 1998-08-07 Furukawa Electric Co Ltd:The Method for judging fault point of underground transmission line
JPH11202017A (en) * 1998-01-19 1999-07-30 Furukawa Electric Co Ltd:The Operation confirming method of fault point orientating apparatus for power cable line
JP2002152959A (en) * 2000-11-10 2002-05-24 Sumitomo Electric Ind Ltd Power cable line

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6345568A (en) * 1986-08-13 1988-02-26 Showa Electric Wire & Cable Co Ltd Abnormality detection system for electric power cable sheath
JPH10206486A (en) * 1997-01-24 1998-08-07 Furukawa Electric Co Ltd:The Method for judging fault point of underground transmission line
JPH11202017A (en) * 1998-01-19 1999-07-30 Furukawa Electric Co Ltd:The Operation confirming method of fault point orientating apparatus for power cable line
JP2002152959A (en) * 2000-11-10 2002-05-24 Sumitomo Electric Ind Ltd Power cable line

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160043771A (en) * 2014-10-14 2016-04-22 한국수력원자력 주식회사 Non-loop common ground apparetus for preventing damage of cable

Similar Documents

Publication Publication Date Title
US7629535B2 (en) Electric submarine power cable and system for direct electric heating
GB2437161A (en) Power Cable for Direct Electric Heating System
KR20030045253A (en) Development of installation method in combinded transmission lines with underground power cable
EP3172808B1 (en) High voltage power transmission line
CN103904591A (en) Method for manufacturing 35 kV thermal contraction intermediate cable head
US20210249151A1 (en) Electric power cable
CN104658670A (en) Single-core anti-snow damage cable
WO2022150399A3 (en) Ground level primary electric distribution system (glds)
CN102855981A (en) Multi-core high-and-low voltage composite submarine cable
CN101887782A (en) Lightning-protection optical cable
CN111243791A (en) High-sealing load-bearing detection cable
KR101054024B1 (en) Apparatus and method for reducing overvoltage of transmission line
US8035031B2 (en) Data transmission
CN220491643U (en) Welding spiral armour cable and supporting explosion-proof joint
CN210053191U (en) Cable terminal
CN211880073U (en) Intermediate cable head structure
CN216119635U (en) Impact-resistant wire cable
CN217902792U (en) Special low-inductance high-voltage coaxial cable
RU2784742C1 (en) Rope device with linear and vertical grounding for enhanced protection against lightning discharges at the edge of the forest of fiber-optic cables with metal elements of a two-cable communication system
CN211265745U (en) Power transmission cable for wind power generation
CN106409413A (en) Cable for pressure-resistant mine
CN213519341U (en) Flame-retardant cable for transmitting signals
CN219418535U (en) High tensile cable with inner liner
CN110838705B (en) Spliced cable protection device and use method thereof
CN206293196U (en) A kind of Anti-pressure mine electric cable

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application