Method of performing a circuit-breaking and closing operation

A technology for closing operation and execution, applied in the direction of high-voltage air circuit breaker, automatic disconnection emergency protection device, protection switch operation/release mechanism, etc.

Active Publication Date: 2020-10-09
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It is an object of the present disclosure to provide a method of performing breaki

Method used

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  • Method of performing a circuit-breaking and closing operation
  • Method of performing a circuit-breaking and closing operation
  • Method of performing a circuit-breaking and closing operation

Examples

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Embodiment Construction

[0034] The inventive concept will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. Inventive concepts may however be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and the present The scope of the inventive concept fully conveys to those skilled in the art. Throughout this specification, the same reference numerals refer to the same elements.

[0035] figure 1 An example of a control system 1 for performing opening and closing operations is shown. The control system 1 comprises a processing circuit 3 and a storage medium 5 .

[0036] Processing circuitry 3 may, for example, use a suitable central processing unit (CPU), multiprocessor, microcontroller, digital signal processor (DSP), application specific integrated circuit (ASIC),

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Abstract

A method of performing a circuit-breaking and closing operation in a three-phase system having a first phase, a second phase lagging the first phase by 120 degrees, and a third phase lagging the firstphase by 240 degrees, wherein the method comprises: a) opening only one of the first phase, the second phase and the third phase before a zero crossing of a current of the corresponding phase, b) opening the remaining phases of the first phase, the second phase and the third phase after step a), and c) closing the first phase, the second phase and the third phase simultaneously or essentially simultaneously at a phase to ground voltage of the phase of the first phase, the second phase and the third phase which lagging the phase that was opened in step a) by 120 degrees in a time range from 60degrees before a peak of said phase to 90 degrees after the peak.

Description

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Claims

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Application Information

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Owner ABB (SCHWEIZ) AG
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