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Arcless DC circuit breaker and using method thereof

一种直流断路器、断路器的技术，应用在电路、用于限制过电流/过电压的紧急保护电路装置、电路装置等方向，能够解决成本昂贵、复杂水冷系统等问题，达到减少使用量、提高分断能力、降低并联组数的效果

Active Publication Date: 2017-04-05
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Typical hybrid circuit breakers use fully-controlled power electronic devices to achieve rapid transfer and breaking of current, which is expensive and requires a complex water cooling system, which is difficult to promote in future medium and high voltage DC systems

Method used

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  • Arcless DC circuit breaker and using method thereof
  • Arcless DC circuit breaker and using method thereof
  • Arcless DC circuit breaker and using method thereof

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Embodiment Construction

[0050] In order to enable those skilled in the art to better understand the solution of the present invention, the following will be combined with the appended Figure 1-10 , clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0051] The following detailed description is merely exemplary in nature and not intended to limit application and uses. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. Unless expressly stated to the contrary, the word "co...

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Abstract

The invention provides an arcless DC circuit breaker and a using method thereof. The circuit breaker adopts a mode of combining magnetic induction transfer and resistor current limiting. The circuit breaker comprises a main current circuit and a transfer current circuit; the transfer current circuit has a bridge structure, a group of one-way modules with a breaking function is used for realizing two-way breaking of the current, and compared with the existing structure, the use amount of breakable devices can be reduced half. Through controlling the action time sequence of a triggering gap, a high-speed switch and a power semiconductor, arcless opening of a fast switch of the main current circuit is realized, and the breaking ability of the circuit breaker is improved significantly. A current limiting module circuit inside the transfer current circuit is used for quickly limiting the short circuit fault current, the parallel group number of wholly-controlled devices of the breaking module circuit can be reduced. Compared with the existing circuit breaker structure, the use amount of breakable devices can be reduced greatly, and the cost of the circuit breaker is reduced significantly.

Description

technical field [0001] The invention belongs to the field of high-voltage circuit breakers, and in particular relates to an arcless DC circuit breaker combined with magnetic induction transfer and resistance current limiting and a use method thereof. Background technique [0002] At present, high-voltage DC current breaking can only meet the needs of load current conversion in "point-to-point" DC transmission converter stations, and cannot break short-circuit fault currents under system voltage, and its breaking speed is also limited. Existing studies have shown that there are many difficulties in the high-voltage DC short-circuit breaking based on self-excited oscillation zero-crossing, forced oscillation zero-crossing and hybrid breaking methods, which lead to people's concerns about the impact of high-voltage DC breaking capacity and breaking speed. The main theoretical basis is still unclear. At the same time, due to insufficient attention to short-circuit current high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/087
CPCH02H3/087H01H9/542H01H9/548H01H33/596H02H3/025H02H9/026H02H7/268H01H33/14
Inventor 吴翊荣命哲吴益飞杨飞纽春萍
Owner XI AN JIAOTONG UNIV
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