A Misoperation-preventing Isolation Switch Used in 110kv Power Network

An isolating switch and anti-error technology, which is applied in the direction of air switch components, circuits, electrical components, etc., can solve the problems of isolating switch ground knife misoperation, danger, controller error signal, etc., and achieve the effect of strengthening the degree of stability

Active Publication Date: 2018-11-06
华运隆腾机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Now the isolating switch is frequently used in various substations. The action of the isolating switch is generally controlled remotely by the console. The error-proof isolating switch used in the 110kV power grid cannot operate under load. The existing "five prevention" measures Although some safeguard measures have been taken, due to misoperation or wrong signal of the controller, it is very likely that the isolating switch or the ground knife installed on the isolating switch will malfunction, causing serious danger and endangering the safety of the power grid.

Method used

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  • A Misoperation-preventing Isolation Switch Used in 110kv Power Network

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Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0045] like figure 1 as shown,

[0046] The invention discloses an error-proof isolating switch for a 110kV power grid, comprising a switch frame 1, a moving knife mechanism 4, a static knife mechanism 3, a ground knife mechanism 2, a moving knife electromagnetic mechanism 44, a ground knife electromagnetic mechanism 23, a moving knife Lock linkage mechanism, ground knife lock linkage mechanism, and switch self-locking mechanism, moving knife mechanism 4, static knife mechanism 3, ground knife mechanism 2 are arranged on switch frame 1, and moving knife electromagnetic mechanism 44 is arranged on moving knife mechanism 4 and uses For locking the moving knife mechanism 4, the ground knife electromagnetic mechanism 23 is set on the static knife mechanism 3 for locking the ground knife mechanism 2, and the moving knife lock linkage mechanism is connected in series on the ground knife mechanism 2 of the three-phase isolating switch, and the ground knife lock linkage mechanism It ...

specific Embodiment 2

[0053] Locking system based on implementing 1 disconnector, including:

[0054]The moving knife locking unit includes a 10kW-15kW moving knife motor 46, a 2m-2.2m long moving knife column 42, a 4m-4.5m long moving knife bar 41, a current sensor 43, a second electromagnetic lock, and a moving knife lock mechanism; The movable knife column 42 is vertically movably arranged at the middle or end of the switch frame 1, the movable knife bar 41 is horizontally arranged on the top of the movable knife column 42, and the movable knife motor 46 is connected to the bottom of the movable knife column 42, and the movable knife motor 46 rotates Drive the moving knife column 42 to rotate, the ratio of the rotating speed of the moving knife motor 46 to the rotating speed of the moving knife column 42 is 300-350, and the rotation angle of the moving knife column 42 is 0-95 degrees; the current sensor 43 is set on the moving knife bar 41 , the second induced current in the current sensor 43 is...

Embodiment 2

[0058] Based on the locking system of the isolating switch of embodiment 2, the control method of the isolating switch:

[0059] (1) When the isolating switch is working normally, the current sensor 43 senses the current on the movable knife rod 41. At this time, a second induced current of 30A-40A is generated in the secondary coil of the current sensor 43, and the second induced current passes through the wire It acts on the electromagnetic lock; in the second electromagnetic lock, a current is carried in the current induction coil;

[0060] (2) The second induction current of 30A-40A electrifies the second coil in the second electromagnetic lock, and the magnetic induction intensity generated by the second iron core wound by the second coil is 500T-600T; the moving knife lock tongue moves thereby Locking the moving knife unit cannot complete the disconnection action;

[0061] (3) After the second iron core has a magnetic field, pull or push the second bolt of the second el...

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Abstract

A misoperation-preventing isolation switch used for 110kV power grid is disclosed. The misoperation-preventing isolation switch comprises a switch frame, a moving cutter mechanism, a static cutter mechanism, a ground cutter mechanism, a moving cutter electromagnetic mechanism, a ground cutter electromagnetic mechanism, a moving cutter lock linkage mechanism, a ground cutter lock linkage mechanism and a switch self-locking mechanism; the moving cutter mechanism, the static cutter mechanism and the ground cutter mechanism are arranged on the switch frame; the moving cutter electromagnetic mechanism is arranged on the moving cutter mechanism for locking the moving cutter mechanism; the ground cutter electromagnetic mechanism is arranged on the static cutter mechanism for locking the ground cutter mechanism; the moving cutter lock linkage mechanism is serially connected with the ground cutter mechanism of a three-phase isolation switch; the ground cutter lock linkage mechanism is serially connected with the ground cutter mechanism on the same side of the three-phase isolation switch; and the switch self-locking mechanism is arranged between the moving cutter mechanism and the static mechanism of the isolation switch. According to the misoperation-preventing isolation switch, the impact of misoperation of operators or false signals from controllers on the safety of the isolation switch is avoided, the safety of the power grid is improved, and the impact of the incorrect actions of the misoperation-preventing isolation switch used for the 110kV power grid on the personal safety is avoided.

Description

technical field [0001] The invention relates to an anti-mistake isolation switch for 110kV power grid. Background technique [0002] The anti-malfunction isolation switch for 110kV power grid is an important switching device in the electrical system of power plants and substations. It needs to be used in conjunction with high-voltage circuit breakers. Its main functions are: to ensure the safety of high-voltage electrical appliances and devices during maintenance work, and to generate isolation It cannot be used to cut off, input load current and break short-circuit current. It can only be used for some switching operations that do not generate strong arcs, that is to say, it does not have the function of arc extinguishing; according to different installation locations, it is divided into indoor type and The outdoor type is divided into single column type, double column type and three column type according to the number of insulating columns, and there are optional equipment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H31/02H01H31/08
CPCH01H31/02H01H31/08H01H2300/024
Inventor 夏烬楚
Owner 华运隆腾机械制造有限公司
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