Inter-phase short circuit prevention tool and system for uninterrupted operation of distribution network

A technology of interphase short circuit and operation, applied in the direction of overhead line/cable equipment, etc., can solve the problem of inconvenience to carry, and achieve the effect of simple structure, good insulation performance and convenient installation.

Inactive Publication Date: 2021-03-23
STATE GRID SHANDONG ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is inconvenient to carry and needs auxiliary support, which does not involve the operation conditions when the wire is lifted.

Method used

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  • Inter-phase short circuit prevention tool and system for uninterrupted operation of distribution network
  • Inter-phase short circuit prevention tool and system for uninterrupted operation of distribution network
  • Inter-phase short circuit prevention tool and system for uninterrupted operation of distribution network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In a typical embodiment of the present invention, such as figure 1 As shown, this embodiment discloses a tool for preventing phase-to-phase short circuit for non-stop operation of distribution network, including insulating rod 4. The material of insulating rod 4 in this embodiment is Lingke rod, and its working voltage range is between 10- 35kv, which is sufficient for the voltage in the distribution network; the first area on the insulating rod 4 is connected to the first connecting mechanism 5, the second area on the insulating rod 4 is connected to the second connecting mechanism 6, and the second connecting mechanism 6 on the insulating rod 4 The three areas are connected with a third connecting mechanism 7, wherein the first connecting mechanism 5 is used to connect the first electric wire 1, the second connecting mechanism 6 is used to connect the second electric wire 2, and the third connecting mechanism 7 is used to connect the third electric wire 3 , wherein, t...

Embodiment 2

[0040] In a typical embodiment of the present invention, such as image 3 and Figure 4 As shown, this embodiment discloses a tool for preventing phase-to-phase short circuit for non-stop operation of distribution network. The difference between this embodiment and Embodiment 1 is that the first connecting mechanism 5 and the second Connecting mechanism 6 and the 3rd connecting mechanism 7 all comprise U-bolt 51, nut and stopper 55, and the two ends of U-bolt 51 are connected through stopper 55, and the two ends of U-bolt 51 all have threads, and U-bolt Both ends of the threaded connection nut. That is, the structures of the first connecting mechanism 5 , the second connecting mechanism 6 and the third connecting mechanism 7 are the same, all of which are combinations of U-shaped bolts 51 and nuts.

[0041] More specifically, the two ends of the U-bolt 51 are respectively threaded to the first nut 53 and the second nut 54 , and when the first nut 53 and the second nut 54 are...

Embodiment 3

[0044] In a typical embodiment of the present invention, such as image 3 and Figure 4 As shown, this embodiment discloses a phase-to-phase short-circuit prevention system for distribution network without power failure, including multiple devices as shown in Embodiment 1 or Embodiment 2, and multiple devices are arranged in the same line at intervals. The "interval arrangement" here means that multiple devices are arranged in the same line according to the set distance.

[0045] In this embodiment, the insulating rods use lighter materials, such as epoxy resin, with a density of 0.9-1.25g / cm 3 In between, using this material as an insulating rod can provide sufficient support strength while maintaining light weight.

[0046] In this embodiment, one or more of the devices in Embodiment 1 may be provided on the vertical arc between two line towers or between two line poles to form an overall system.

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Abstract

The invention discloses an inter-phase short circuit prevention tool and system for uninterrupted operation of a distribution network, belongs to the field of power cables, and aims to achieve synchronous movement of cables of different phases by using a synchronous movement direction method for the cables of different phases, avoid inter-phase short circuits between the cables and ensure smooth live-line operation. The device comprises an insulating rod; a first area on the insulating rod is connected with a first connecting mechanism; a second area on the insulating rod is connected with a second connecting mechanism; a third area on the insulating rod is connected with a third connecting mechanism; the second area is located between the first area and the third area; and the distance between the adjacent areas is greater than or equal to an inter-phase short-circuit safety distance.

Description

technical field [0001] The invention belongs to the field of power cables, and in particular relates to a tool and system for preventing short-circuit between phases for distribution network non-stop operation. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] There are two types of phase-to-phase short circuits, two-phase short circuit and three-phase short circuit. The "phase" here refers to the three-phase symmetrical AC power supply, which is a power system composed of three single-phase AC power supplies. The power supply method adopted in our country is called three-phase four-wire AC power supply, and the windings of the three-phase generator are connected in star form. The first end of each winding is called the terminal line, and the voltage between the terminal lines is called the line voltage. The ends of the windings are connected toge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/02
CPCH02G1/02
Inventor 刘国超王松林王洪峰邢明明
Owner STATE GRID SHANDONG ELECTRIC POWER
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