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DC circuit breaker, DC circuit breaker and control method

A DC circuit breaker and control unit technology, applied in the field of power electronics, can solve problems such as unreliable DC circuit breaker, achieve the effect of improving stability and reliability and reducing arc

Active Publication Date: 2018-08-10
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention proposes a DC circuit breaker, a DC circuit breaker and a control method, which are used to solve the problem that the DC circuit breaker cannot be reliably performed in a high-voltage direct current transmission scenario

Method used

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  • DC circuit breaker, DC circuit breaker and control method
  • DC circuit breaker, DC circuit breaker and control method
  • DC circuit breaker, DC circuit breaker and control method

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail through the following examples.

[0029] figure 2 A schematic structural diagram of a DC circuit breaker provided in Embodiment 1 of the present invention, as shown in figure 2 As shown, the DC circuit breaker 1 includes: a controllable unit 11, the controllable unit 11 includes a hollow insulator 111 and connecting terminals 112, 113 located at both ends of the hollow insulator; a coil winding 12, and the two ends of the coil winding 12 are electrically connected respectively. Connected to the output end of a controllable power supply 14; a control unit 13, the control unit 13 is electrically connected with the controllable power supply 14, used to control the output current of the controllable power supply 14 to the coil winding 12; wherein the hollow insulator is filled with magnetic current Variable fluid 114, ...

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PUM

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Abstract

The present invention provides a DC circuit breaker, a DC circuit break device and a control method. The DC circuit breaker comprises a controllable unit, a coil winding wound at the periphery of the controllable unit and a control unit, wherein the two ends of the coil winding are connected with the output end of a controllable power supply electrically and separately, the control unit is connected with the controllable power supply electrically and is used to control an output current of the controllable power supply to the coil winding, and the controllable unit is used to change the conductivity along with the change of the current passing through the coil winding. By the DC circuit breaker and the DC circuit break device provided by the present invention, and by controlling the current in the coil winding, the conductivity of the controllable unit is adjusted accurately and continuously, thereby effectively reducing an arc, and improving the DC circuit break stability and reliability.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a DC circuit breaker, a DC circuit breaker and a control method. Background technique [0002] With the development of more and more high-voltage direct current (referred to as HVDC) systems, it is foreseeable that interconnected high-voltage direct current grids will be widely used. However, in practical applications, since the DC current does not have a natural zero-crossing point, when the current is turned off, natural arc extinguishing cannot be achieved. [0003] For this, figure 1 It is a structural schematic diagram of an existing DC circuit breaker, such as figure 1 As shown, during normal conduction, the switch K 3 Open, DC circuit breaker is not activated, all current flows through switch K 2 , while the power supply U dc is the capacitance C 2 Charge. Based on the DC circuit breaker, when the switch K 2 When it is turned off, the corresponding arc vo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/04H02H9/04
Inventor 杨溢姚吉隆
Owner SIEMENS AG
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