Guide for Breaker Failure Protection of Power Circuit Breakers下载

weixin_39821620 2019-05-12 11:30:15

Guide for Breaker Failure Protection of Power Circuit Breakers
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Guide for Breaker Failure Protection of Power Circuit Breakers

Abstract—Anovel type of circuit breaker is introduced for operation at medium-voltage dc with future naval ship power systems as a targeted application. The breaker utilizes a z-source LC circuit in order to automatically commutate a main-path SCR during a fault. Compared to existing dc circuit breakers, the z-source breaker features fast turn-off, simple control, and the source does not experience the fault current. The operation and analysis of the new breaker is presented. Component sizing is carried out for three medium-voltage power levels. Incorporation of the new breaker within a drive system is also explored. Laboratory validation is carried out on a low-voltage prototype.

英语的关于断路器术语的解释 accessory = An electrical or mechanical device that performs a secondary or minor function apart from overcurrent protection. accessory cover = A removable cover on the front of a circuit breaker behind which are mounted the trip unit and all electrical accessories. adjustable rating plug = A component which plugs into the trip unit, establishing the ampere rating of the circuit breaker AIC = Amperes interrupting capacity. AIR = See amperes interrupting rating. alarm switch (bell alarm) = See overcurrent trip switch. ambient temperature rating = Temperature at which the continuous current rating (handle rating) of a circuit breaker is based; the temperature of the air immediately surrounding the circuit breaker which can affect the thermal (overload) tripping characteristics of thermal-magnetic circuit breakers. Electronic trip circuit breakers, however, are insensitive to normal (-10° to 50°C) ambient conditions. ammeter (local current meter) = A module that mounts directly to the circuit breaker trip unit and reports RMS phase and ground-fault current values as seen by the trip unit. Current values are displayed one phase at a time. ampacity = The current, in amperes, that a conductor or circuit breaker can carry continuously under the conditions of use without exceeding its temperature rating. ampere = The equivalent of one coulomb per second or the steady current produced by one volt applied across a resistance of one ohm.

Distributed systems can be unreliable. Requests might encounter timeouts or fail completely. A circuit breaker can help mitigate these issues, and Spring Cloud Circuit Breaker gives you the choice of ...

文章目录简介参考资料简介我们知道，在微服务架构中，一个服务通过远程调用去访问另一个服务是很常见的事，服务运行在不同的进程甚至不同的机器上，服务间的调用可能会一直得不到响应直到超时失败，更严重的是，如果有多个远程调用同时请求了一个没有响应的服务，可能会耗尽系统的资源从而导致跨服务的级联失败，为了防止这种灾难性的结果，有人(据说是一个叫Michael Nygard的人)就提出了一种叫做Circuit Breaker的模式，中文一般翻译为电路熔断器模式，它的原理就像电路中的保险丝一样，当电路出现异常(比如短路

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