Extra-high-voltage transformer station optical cable terminal voltage-limiting apparatus

An optical cable terminal and substation technology, applied in circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc. The problem of cable breakage and other problems can be reduced to reduce the time of assembly operation and operation on the pole, promote safe operation, and ensure the safety of operation.

Inactive Publication Date: 2016-08-10
STATE GRID CORP OF CHINA +1
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0002] At present, the domestic power system 1000KV UHV substation OPGW terminal downcomer does not have a pressure limiting device for the rod. The OPGW in operation is subjected to a high induced voltage in a strong electric field environment, which may easily cause the discharge of the downcomer to the rod. The problem of broken strands of the down-conductor cable requires power outage for maintenance after the fault occurs; it affects the safe operation of the UHV power grid

Method used

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  • Extra-high-voltage transformer station optical cable terminal voltage-limiting apparatus

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Embodiment Construction

[0019] Such as figure 1 As shown, a UHV substation optical cable terminal voltage limiting device includes a voltage limiter 2, the two ends of the voltage limiter 2 are respectively connected to the upper connection plate 1 and the lower connection plate 3, and the upper connection plate 1 is connected to the upper cover of the cable 12 connection, the lower connecting plate 3 is connected with the extension column 10, the upper end of the insulating spacer column 4 is connected with the lower cover 9 of the cable, the lower end of the insulation spacer column 4 is connected with the extension column 10, and the lower end of the extension column 10 is connected with the hoop 6.

[0020] The two ends of the pressure limiter 2 are fastened to the upper connection plate 1 and the lower connection plate 3 through the upper fastening bolt 8 and the lower fastening bolt 8' respectively.

[0021] The cable pressing upper cover 12 and the cable pressing lower cover 9 are connected by...

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Abstract

A voltage limiting device for an optical cable terminal in an UHV substation, including a voltage limiter. Column connection, the upper end of the insulating spacer column is connected to the lower cover of the cable, the lower end of the insulating spacer plate is connected to the extension column, and the lower end of the extension column is connected to the hoop. The present invention is a voltage limiting device for optical cable terminals in UHV substations, which improves the safe operation rate of OPGW terminal downcomers in 1000KV UHV substations, eliminates equipment hidden dangers in the operation of OPGW optical cable lines, reduces power outage maintenance operations, and promotes the safe operation rate of UHV power grids , reduce the operation and maintenance cost of power grid enterprises.

Description

technical field [0001] The invention relates to a voltage limiting device for an optical cable terminal of an ultra-high voltage substation, and relates to the technical field of installation of an OPGW terminal of an ultra-high voltage substation. Background technique [0002] At present, the domestic power system 1000KV UHV substation OPGW terminal downcomer does not have a pressure limiting device for the rod. The OPGW in operation is subjected to a high induced voltage in a strong electric field environment, which may easily cause the discharge of the downcomer to the rod. The problem of broken strands of the down-conductor cable requires power outage for maintenance after the fault occurs, which affects the safe operation of the UHV power grid. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a voltage limiting device for optical cable terminals in UHV substations, which improves the safe operation rate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
CPCH02H9/047
Inventor 张悦饶思传张路余继珍祝丹杨帆侯俊赵沁夏雨潇范伟杨黎汤文霞胡兵冯文王丹红李芳亚唐毅刚徐少峰张晓华
Owner STATE GRID CORP OF CHINA
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