CN202737115U - 高压单芯电缆金属外护套接地结构 - Google Patents

高压单芯电缆金属外护套接地结构 Download PDF

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Publication number
CN202737115U
CN202737115U CN 201220287849 CN201220287849U CN202737115U CN 202737115 U CN202737115 U CN 202737115U CN 201220287849 CN201220287849 CN 201220287849 CN 201220287849 U CN201220287849 U CN 201220287849U CN 202737115 U CN202737115 U CN 202737115U
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cable
high voltage
voltage single
single core
outer sheath
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李朝顺
戴承文
潘玉成
宁善武
刘明岳
毕岩
李文勇
陈曦
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Shenyang electric power survey design institute
State Grid Corp of China SGCC
Economic and Technological Research Institute of State Grid Liaoning Electric Power Co Ltd
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Shenyang electric power survey design institute
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Abstract

一种高压单芯电缆金属外护套接地结构，包括高压单芯电缆、保护器接地箱，其特征是同轴电缆内导体与高压单芯电缆的金属外护套连接，同轴电缆的外导体与终端或中间接头支架或金属构架连接。本实用新型的优点是能降低高压单芯电力电缆金属外护套的感应电压，防止电缆金属护套绝缘被击穿，造成线路故障。能提高电力电缆线路设计水平及电缆线路供电可靠性，保证运行维护的人身安全。

Description

高压单芯电缆金属外护套接地结构
技术领域
本实用新型属于一种高压单芯电力电缆附属设施，特别是一种高压单芯电缆金属外护套接地结构。
背景技术
目前，我国各种设计规范、规定中对交流单芯电流电缆金属外护套接地方式的阐述都比较简单，接地方式也是一些单线图，近期对国内各大城市供电设计部门调查，电缆线路每年都在较大比例的增加，而金属外护套的接地方式大致基本相同，对一些特殊的电缆线路却各有不同的接地方式，而接地电缆大部分均采用单芯接地引线（除交叉互联接地线），仅与电缆金属外护套相连接，由于电缆金属外护套上每厘米长度的感应电压叠加起来可达到危及人身安全的程度，当线路遭受到操作过电压或雷击过电压时，护套上会形成很高的感应电压，将使金属外护套绝缘击穿。为使电缆金属外护套对地应有良好的绝缘。
发明内容
本实用新型的目的是提供一种高压单芯电缆金属外护套接地结构，能降低高压单芯电力电缆金属外护套的感应电压，能提高电力电缆线路设计水平及电缆线路供电可靠性，保证运行维护的人身安全。
本实用新型提供的技术方案如下：包括高压单芯电缆、保护器接地箱，其特征是：同轴电缆内导体与高压单芯电缆的金属外护套连接，同轴电缆的外导体与终端或中间接头支架或金属构架连接。
本实用新型的优点是：能降低高压单芯电力电缆金属外护套的感应电压，防止电缆金属护套绝缘被击穿，造成线路故障。能提高电力电缆线路设计水平及电缆线路供电可靠性，保证运行维护的人身安全。
附图说明
图1是本实用新型高压单芯电缆金属外护套接地结构示意图。
具体实施方式
见图1，具体结构如下：将常用保护器接地箱6的单芯接地引线改为同轴电缆连接，其连接结构：将同轴电缆内导体3与高压单芯电缆1的金属外护套2连接，同轴电缆外导体4与终端或中间接头支架或金属构架5连接。

Claims (1)

1.一种高压单芯电缆金属外护套接地结构，包括高压单芯电缆、保护器接地箱，其特征是：同轴电缆内导体与高压单芯电缆的金属外护套连接，同轴电缆的外导体与终端或中间接头支架或金属构架连接。
CN 201220287849 2012-06-19 2012-06-19 高压单芯电缆金属外护套接地结构 Expired - Fee Related CN202737115U (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106374241A (zh) * 2016-08-29 2017-02-01 宁波东方电缆股份有限公司 一种内置有铠装测温光缆的陆缆的接地结构
CN111106457A (zh) * 2019-12-31 2020-05-05 国网上海市电力公司 一种35kV单芯电缆的接地方法及接地装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106374241A (zh) * 2016-08-29 2017-02-01 宁波东方电缆股份有限公司 一种内置有铠装测温光缆的陆缆的接地结构
CN111106457A (zh) * 2019-12-31 2020-05-05 国网上海市电力公司 一种35kV单芯电缆的接地方法及接地装置
CN111106457B (zh) * 2019-12-31 2022-01-28 国网上海市电力公司 一种35kV单芯电缆的接地方法及接地装置

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Effective date of registration: 20160811

Address after: 100000 Xicheng District West Chang'an Avenue, No. 86, Beijing

Patentee after: State Grid Corporation of China

Patentee after: Economic Technology Research Institute of State Grid Liaoning Electric Power Co., Ltd.

Patentee after: Shenyang Electric Power Survey Design Institute

Address before: 110003, No. 81, eleven weft Road, Heping District, Liaoning, Shenyang

Patentee before: Shenyang Electric Power Survey Design Institute

CB03 Change of inventor or designer information

Inventor after: Li Chaoshun

Inventor after: Li Dongxue

Inventor after: Dai Chengwen

Inventor after: Pan Yucheng

Inventor after: Ning Shanwu

Inventor after: Liu Mingyue

Inventor after: Bi Yan

Inventor after: Li Wenyong

Inventor after: Chen Xi

Inventor after: Yu Dayong

Inventor before: Li Chaoshun

Inventor before: Dai Chengwen

Inventor before: Pan Yucheng

Inventor before: Ning Shanwu

Inventor before: Liu Mingyue

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Granted publication date: 20130213

Termination date: 20170619

CF01 Termination of patent right due to non-payment of annual fee