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High speed earthing switch of gas insulated switchgear

A technology of gas insulated switch and grounding switch, which is applied in the setting of switchgear, grounding switch, switchgear, etc. It can solve the problems of prolonged arc duration and cutoff failure, so as to prevent the decrease of moving speed and improve the performance of arc cutoff Effect

Active Publication Date: 2021-05-07
LS ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, in the fast earthing switch of the gas insulated switchgear of the prior art, depending on the type of insulating gas, there may be a failure to cut off due to the prolonged arcing time at the time of cutting off.

Method used

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  • High speed earthing switch of gas insulated switchgear
  • High speed earthing switch of gas insulated switchgear
  • High speed earthing switch of gas insulated switchgear

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0046] A quick grounding switch for a gas insulated switchgear according to an embodiment of the present invention includes: an outer box 10; a movable shaft 17 arranged in a part of the outer box 10; a cylinder member 30 arranged separately from the movable shaft 17 and a piston member 20, inserted and disposed inside the cylinder member 30, connected to the movable shaft 17 to move forward and backward so as to spray the air inside the cylinder member 30 to the contact portion.

[0047] An enclosure (tank) 10 is formed in a box shape and can house a circuit breaker (Disconnect Switch) or an earth switch (Earthng Switch) or the like. At least one of the upper, lower, left, right, front and rear parts of the outer box 10 can be opened. The outer case 10 may be a part of the entire outer case constituting the gas insulated switchgear. The outer box 10 may be any one of a plurality of areas constituting the entire outer box of the gas insulated switchgear. The outer case 10 ma...

no. 2 example

[0097] refer to Figure 10 and Figure 11 , the fast earthing switch of the gas insulated switchgear according to another embodiment of the present invention will be described.

[0098] This embodiment differs from the previous embodiments in that the piston member 160 is formed independently of the mover 120 .

[0099] The fixing part 140 including the fixing part seat 141 , the fixing contact 142 and the fixing part shield 143 is disposed on the first conductor 114 .

[0100] The movable part 150 including the movable part seat 151 , the movable contact 152 , and the movable part cover 153 is provided on the first supporting member 155 . The movable part 150 is disposed apart from the fixed part 140 .

[0101] The bus bar 146 is connected to a ground terminal (ground bushing) 145 provided on the outer case 110 and to the movable part seat 141 .

[0102] The mover 120 is connected to the movable shaft 116 via the first crank lever 117 . The mover 120 is provided to pass ...

no. 3 example

[0109] refer to Figure 12 and Figure 13 , the fast earthing switch of the gas insulated switchgear according to another embodiment of the present invention will be described.

[0110] This embodiment differs from the first embodiment in that the piston member 220 is connected to the first conductor 214 as a main circuit, and the fixing portion 240 is connected to the ground terminal 245 . The configurations of the piston member 220 and the cylinder member 30 are almost the same as those of the first embodiment.

[0111] As the movable shaft 217 rotates, the piston member (mover) 220 connects or disconnects the movable part 250 and the fixed part 240, thereby connecting or disconnecting the ground circuit.

[0112] The fixed plate 260 and the movable plate 270 are provided on the piston member 220 similarly to the first embodiment.

[0113] Since the closing and opening functions in this embodiment are similar to those in the first embodiment, a detailed description thereo...

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PUM

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Abstract

The present invention relates to a high speed earthing switch of a gas insulated switchgear and, more specifically, to a high speed earthing switch of a gas insulated switchgear, which includes an air blower so as to secure an improved arc interruption performance. A high speed earthing switch of a gas insulated switchgear according to an embodiment of the present invention comprises: an outer case; a cylinder member installed inside the outer case and having a ventilation hole formed along the lower circumferential surface; and a piston member installed to be inserted into the cylinder member, and moving backward and forward by means of a force transferred from a driving unit so as to inject air inside the cylinder member to a contact part when the cylinder member is opened.

Description

technical field [0001] The present invention relates to a fast earthing switch of a gas insulated switchgear, in more detail, relates to a fast earthing switch of a gas insulated switchgear which improves the arc breaking performance by setting an air supply mechanism. Background technique [0002] Generally, a gas insulated switchgear (Gas Insulated Swichgear) is set between the circuits between the power supply side and the load side of the power system, and when the circuit is artificially switched on or off under normal current conditions or grounding occurs on the circuit Electrical equipment that protects the power system and load equipment by safely disconnecting the current when there is an abnormal current such as a short circuit or short circuit. [0003] Usually, this gas insulated switchgear (GIS) consists of a bushing unit (BushingUnit) that receives power from a high-voltage power source, a gas circuit breaker (Gas Circuit Breaker, CB), a circuit breaker (Disco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B13/075H01H31/00
CPCH02B13/075H01H31/003H01H33/91
Inventor 金炯镇林祐陞
Owner LS ELECTRIC CO LTD
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