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Switch

A switch and control switch technology, applied in the field of electric power, can solve the problems of reduced service life and safety of high-speed switches, reduce the number, reduce the probability of fatigue damage, and ensure the effect of service life and safety

Active Publication Date: 2021-02-09
ANHUI ONESKY ELECTRIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a switch that can solve the problem of reduced service life and safety of high-speed switches in the related art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0035] This Example 1 involves discharging an energy storage element to a drive coil. Specifically, the two control switches used for fast opening and closing are connected in series with the energy storage element to discharge the driving coil of the driving mechanism; and one of the two control switches is connected in parallel with the current limiting resistor.

[0036] figure 2 is a schematic diagram of a control circuit according to an embodiment of the present invention Figure 1 . Such as figure 2 As shown, the fast control switch is the first control switch K1, the constant speed control switch is the second control switch K2, the first control switch K1, the second control switch K2, the driving coil L and the energy storage element C are connected in series, The current limiting resistor R is connected in parallel with the second control switch K2.

[0037] In this example 1, when the circuit breaks down and needs to open and close quickly, close the first con...

example 2

[0040] The difference between Example 2 and Example 1 is that the current limiting resistor R2 is added.

[0041] image 3 is a schematic diagram of a control circuit according to an embodiment of the present invention Figure II . Such as image 3 As shown, the fast control switch is the first control switch K1, the constant speed control switch is the second control switch K2, the first control switch K1, the second control switch K2, the drive coil L and the energy storage element C connected in series, the current-limiting resistor R1 is connected in parallel with the second control switch K2; the control circuit also includes a current-limiting resistor R2, the first end of which is connected between the first control switch K1 and the second control switch K2 connected in series, and the first end of which is The two ends are connected between the driving coil L and the energy storage element C connected in series.

[0042] In this example 2, when the circuit breaks do...

example 3

[0045] The difference between Example 3 and Example 2 is that the current limiting resistor R2 is connected to the driving coil L.

[0046] Figure 4 is a schematic diagram of a control circuit according to an embodiment of the present invention Figure three . Such as Figure 4 As shown, the fast control switch is the first control switch K1, the constant speed control switch is the second control switch K2, the first control switch K1, the second control switch K2, the drive coil L and the energy storage element C connected in series, the current-limiting resistor R1 is connected in parallel with the second control switch K2; the control circuit also includes a current-limiting resistor R2, the first end of which is connected between the first control switch K1 and the second control switch K2 connected in series, and the first end of which is The two ends are connected to the drive coil L.

[0047] In Example 3, when the circuit breaks down and needs to open and close q...

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PUM

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Abstract

The invention discloses a switch. The switch comprises: a switch assembly, which is used for executing an opening action and a closing action of a circuit when the circuit works normally or has a fault; a driving mechanism which comprises a driving coil and is used for driving the switch assembly to act; and a control circuit. The control circuit in the switch controls the current flowing throughthe driving coil of the driving mechanism and the change rate of the current according to different operation conditions of the circuit, so that the switch assembly executes the switching-off action and the switching-on action (switching-off and switching-on action) of the circuit at the most appropriate speed, namely, the combination of the rapid switching-off and switching-on action and the constant-speed switching-off and switching-on action is realized. Because the number of the quick opening and closing actions is reduced, the probability of fatigue damage is reduced, and the service lifeand safety of the switch are ensured.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a switch. Background technique [0002] With the rapid development of my country's industrialization and urbanization, the demand for electricity will continue to grow in a relatively long period of time. The task of power grid development is arduous, and the development of smart distribution network is even more urgent. The research and development of a new generation of high-reliability, intelligent high-speed circuit breakers (or switches) can provide a strong technical guarantee for the safety and reliability of power supply in intelligent distribution networks. [0003] Traditionally, in order to ensure the safety of the power grid and remove the faulty circuit, a circuit breaker is usually used to disconnect the faulty circuit. However, the opening speed is slow in this way, and the fault circuit is cut off within 30ms-40ms after the arc fault occurs, which cannot protect th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H3/28H01H9/54
CPCH01H9/54H01H3/22H01H3/28H01H71/12H01H71/24H01H71/2409
Inventor 芮骏余银钢洪新春唐春林
Owner ANHUI ONESKY ELECTRIC TECH