KR20080112019A - 지중송전케이블의 접지구조 - Google Patents
지중송전케이블의 접지구조 Download PDFInfo
- Publication number
- KR20080112019A KR20080112019A KR1020070060703A KR20070060703A KR20080112019A KR 20080112019 A KR20080112019 A KR 20080112019A KR 1020070060703 A KR1020070060703 A KR 1020070060703A KR 20070060703 A KR20070060703 A KR 20070060703A KR 20080112019 A KR20080112019 A KR 20080112019A
- Authority
- KR
- South Korea
- Prior art keywords
- cable
- sheath
- ground
- circulating current
- junction box
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- 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
- H02G15/103—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes with devices for relieving electrical stress
- H02G15/105—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes with devices for relieving electrical stress connected to the cable shield only
- H02G15/1055—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes with devices for relieving electrical stress connected to the cable shield only with cross-bonding of cable shields
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- 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
Abstract
Description
Claims (3)
- 지중송전케이블에 편단 접지를 적용한 선로구조에 있어서, 지중송전케이블을 양쪽으로 분리하는 절연접속함(9)으로부터 인출된 케이블 시스(5-2)를 다른 상의 케이블 시스(5-2)와 순차적으로 교차결선(Crossbonding)하여 변형된 크로스본드 접지구조를 형성하고, 각 절연접속함(9)의 시스 회로에 리액터로된 시스 순환전류 저감장치(20)를 직렬로 삽입하여 구성함을 특징으로 하는 지중송전케이블의 접지구조.
- 제1항에 있어서,상기 변형된 크로스본드 접지구조는 도체, 절연체, 시스, 방식층으로 형성되어 전력을 공급하는 케이블(5)과; 상기 케이블(5)을 분리하여 양쪽의 케이블 도체(5-1)와 도체(5-1) 그리고, 케이블 시스(5-2)와 시스(5-2)를 서로 연결하는 보통접속함(8)(NJ:Normal Joint)과; 상기 케이블(5)을 분리하여 양쪽의 케이블 도체(5-1)와 도체(5-1)를 서로 연결하고 양쪽의 케이블 시스(5-2)는 연결하지 않은 상태에서 외부로 인출하는 절연접속함(9)(IJ:Insulation Joint); 및 상기 절연접속함(9)에서 인출된 케이블 시스(5-2)를 다른 상의 케이블 시스(5-2)와 순차적으로 교차하여 결선하는 리드선(6)으로 구성함을 특징으로 하는 지중송전케이블의 접지구조.
- 본 발명은 지중송전케이블에서 편단 접지계통의 안정화 방법에 있어서, 리액터로된 시스 순환전류 저감장치(20)를 시스 회로에 적용하여 정상상태에서는 고 임피던스 특성에 의해 순환전류를 저감하고, 지락 및 단락 사고시에는 리액터의 포화특성을 이용한 저 임피던스 특성으로 사고 전류가 흐를 수 있도록 함을 특징으로 하는 편단 접지구간의 안정화 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070060703A KR100889929B1 (ko) | 2007-06-20 | 2007-06-20 | 지중송전케이블의 접지구조 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020070060703A KR100889929B1 (ko) | 2007-06-20 | 2007-06-20 | 지중송전케이블의 접지구조 |
Publications (2)
Publication Number | Publication Date |
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KR20080112019A true KR20080112019A (ko) | 2008-12-24 |
KR100889929B1 KR100889929B1 (ko) | 2009-03-24 |
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KR1020070060703A KR100889929B1 (ko) | 2007-06-20 | 2007-06-20 | 지중송전케이블의 접지구조 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104111402A (zh) * | 2014-08-01 | 2014-10-22 | 国家电网公司 | 一种电力电联交叉互联系统的接线检测方法和装置 |
CN108469542A (zh) * | 2018-03-01 | 2018-08-31 | 华南理工大学 | 一种含绝缘金布的单芯电缆分布式感应电流的计算方法 |
CN108680816A (zh) * | 2018-03-28 | 2018-10-19 | 国网天津市电力公司 | 一种高压电缆交叉互联接地系统带电核对方法 |
CN117630613A (zh) * | 2024-01-25 | 2024-03-01 | 南京九维测控科技有限公司 | 一种基于接地环流拟合曲线的电缆绝缘故障定位方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100477888B1 (ko) * | 2002-05-27 | 2005-03-18 | 엘지전선 주식회사 | 지중 송전 케이블용 시스 순환전류 표정 장치 |
KR100538018B1 (ko) * | 2003-08-01 | 2005-12-21 | 한국전력공사 | 지중 전력케이블의 시스전류 측정장치 |
KR100571152B1 (ko) * | 2004-03-12 | 2006-04-17 | 엘에스전선 주식회사 | 지중 케이블의 시스전류 억제장치 |
KR100534370B1 (ko) * | 2004-05-03 | 2005-12-08 | 엘에스전선 주식회사 | 지중 송전케이블의 시스전류 저감장치 |
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2007
- 2007-06-20 KR KR1020070060703A patent/KR100889929B1/ko active IP Right Grant
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104111402A (zh) * | 2014-08-01 | 2014-10-22 | 国家电网公司 | 一种电力电联交叉互联系统的接线检测方法和装置 |
CN108469542A (zh) * | 2018-03-01 | 2018-08-31 | 华南理工大学 | 一种含绝缘金布的单芯电缆分布式感应电流的计算方法 |
CN108469542B (zh) * | 2018-03-01 | 2019-10-18 | 华南理工大学 | 一种含绝缘金布的单芯电缆分布式感应电流的计算方法 |
CN108680816A (zh) * | 2018-03-28 | 2018-10-19 | 国网天津市电力公司 | 一种高压电缆交叉互联接地系统带电核对方法 |
CN117630613A (zh) * | 2024-01-25 | 2024-03-01 | 南京九维测控科技有限公司 | 一种基于接地环流拟合曲线的电缆绝缘故障定位方法 |
CN117630613B (zh) * | 2024-01-25 | 2024-04-26 | 南京九维测控科技有限公司 | 一种基于接地环流拟合曲线的电缆绝缘故障定位方法 |
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KR100889929B1 (ko) | 2009-03-24 |
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