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DC solid state breaker and power distribution system

A solid-state circuit breaker, DC power supply technology, applied in electronic switches, electrical components, circuit devices, etc., can solve the problems of large fault current, difficult to estimate, increase the volume and cost of DC solid-state circuit breakers, and reduce the size and cost. The effect of improving reliability

Inactive Publication Date: 2016-11-23
JL ECOPRO EE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the case of a short-circuit fault, the fault current is usually very large and difficult to estimate, so that the first energy storage capacitor C1 and the first energy storage capacitor C2 with large capacitance values ​​are required to provide enough energy to cut off short circuit fault
This not only increases the size and cost of the DC solid state circuit breaker, but also poses a risk to the reliability of the DC solid state circuit breaker

Method used

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  • DC solid state breaker and power distribution system
  • DC solid state breaker and power distribution system
  • DC solid state breaker and power distribution system

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Embodiment Construction

[0073] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments. communicated to those skilled in the art. In the drawings, the size of some elements may be exaggerated or deformed for clarity. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0074] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, one skilled in the art...

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Abstract

The invention provides a DC solid state breaker and a power distribution system. The DC solid state breaker includes a short circuit protection unit, a charge switch unit and a main switch unit. The protection unit includes a first energy storage capacitor, a first current limiting inductor, a first power diode, a second energy storage capacitor, a second current limiting inductor and a second power diode. The charge switch unit includes a first charge branch circuit and a second charge branch circuit. The main switch unit includes at least one main switch thyristor. The energy storage capacitance and the resonance parameters used in the DC solid state breaker are designed in the reference of overcurrent protection requirements. Therefore, the size and the cost of the DC solid state breaker can be reduced substantially and the reliability of the DC solid breaker is also improved.

Description

technical field [0001] The present disclosure relates to the technical field of electric power equipment, in particular to a DC solid-state circuit breaker and a power distribution system including the DC solid-state circuit breaker. Background technique [0002] Today's society puts forward higher requirements for power system and transmission technology. How to further improve the stability of the power grid and provide users with high-quality power has become the development direction of the power industry. As an important link in the transmission line, the circuit breaker's performance directly affects the normal operation of the power grid. For example, a DC solid-state circuit breaker is a semiconductor switch-based power automation device that is used to quickly disconnect faults from DC transmission, distribution systems, or DC power supply devices. It has the advantages of flexible control, fast action, no arc, long life and high reliability. [0003] The semicond...

Claims

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Application Information

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IPC IPC(8): H02H3/087H03K17/73
CPCH02H3/087H03K17/73
Inventor 郑家伟叶远茂丁凯王道洪
Owner JL ECOPRO EE TECH
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