35kv neutral point single-pole interlock-type isolating switch device

A technology of isolating switch and neutral point, which is applied in the field of 35kV neutral point unipolar interlocking isolating switch device, can solve problems such as main transformer tripping, reduce secondary wiring, reduce equipment foundation, and prevent main transformer from tripping by mistake the effect of the possibility

Inactive Publication Date: 2016-09-21
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the existing design scheme, if the two spacers on the neutral point of the medium voltage side of 35kV are stored, the mutual locking function or no locking function is adopted for the secondary wiring. If the two spacers are closed at the same time, the neutral point of the medium voltage side will be short. connected to cause circulation, which may cause the main transformer to trip

Method used

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  • 35kv neutral point single-pole interlock-type isolating switch device
  • 35kv neutral point single-pole interlock-type isolating switch device
  • 35kv neutral point single-pole interlock-type isolating switch device

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Embodiment Construction

[0026] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0027] A 35kV neutral point single-pole interlocking isolation switch device, including an active conductive part 1, a passive conductive part 2, an insulating porcelain column 3, a spacer base 4, a channel steel 5, a support body 6, an operating mechanism box 7, and a groove The steel 5 is arranged on the top of the support body 6, the upper end of the channel steel 5 is provided with a spacer base 4, the insulating porcelain columns 3 are respectively arranged at the two ends and the middle part of the spacer base 4, and the insulating porcelain columns 3 arranged at the two ends of the spacer base 4 Passive conductive parts 2 are arranged on the top, and active co...

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Abstract

The invention discloses a 35kV neutral point unipolar interlocking isolation switch device, which comprises an active conductive part, a passive conductive part, an insulating porcelain column, a spacer base, a channel steel, a support body and an operating mechanism box, the channel steel Set on the top of the support body, the upper end of the channel steel is provided with a spacer base, the insulating ceramic columns are respectively arranged at both ends and the middle of the spacer base, and passive conductive In the part, the active conductive part is set on the insulating porcelain column in the middle of the spacer base, and the operating mechanism box for controlling the active conductive part is connected to the active conductive part.

Description

technical field [0001] The invention relates to the field of electric equipment, in particular to a 35kV neutral point single-pole interlocking isolation switch device. Background technique [0002] At present, the neutral point grounding method of the 35kV medium voltage side of the 110kV substation is mostly grounded through the arc suppression coil, and the arc suppression coil is connected to the neutral point of the two main transformers through the arrester and two single-pole spacers. Under the parallel operation mode of two main transformers in the 110kV substation, because the 35kV line is connected to a section of the bus at the same time, the capacitance current is accumulated, which exceeds the allowable value of the design specification. The unipolar spacer at the neutral point on the medium-voltage side of a main transformer is closed, so that the arc-suppression coil is connected to the grid to compensate for the capacitive current, reducing the probability of...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01H31/08
CPCH01H31/08
Inventor周二彪李娟田海刚赵军付林
OwnerSTATE GRID CORP OF CHINA