北美继电保护设计经验交流

miaojj

请教下国外失灵保护是如何现实的?国内是线路保护再配置一套失灵启动装置，由失灵启动装置的接点与线路保护的保护动作接点串联后接至母差，由母差来实现失灵跳其他线路。国外有些地方不配母差保护，线路保护装置自带失灵功能（50BF），不知国外当线路失灵时，是不是由该线路的失灵直接去跳开其他线路，还是有另外的实现方式。能否介绍下国外二次回路的接线。

DONGBEI

You are right. the Line relays have BF logic in the North America. when BF happens, it will produce virtual output contact which connect with bus relay as virtual input contact to trip other lines, at the same time it will transfer a signal to remote relays to trip remote breaker.

tang410

谢谢分享！！！

Johnzhang

谢谢分享！！！！！！！！！！！
4 t  l) P5 ~5 d4 H( a$ ~# `' A ::礼物::

kolle

你太厉害了，找的就是你这种人，多多向你学习能使我进步不小，因为我下不起东西，像达人你这样直接写出来，是最好的。

liangzf

应该和国内没有太大区别吧。我国的继电保护应该是世界领先的。

楚大少

呵，你是在哪个公司做的啊？
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一个行业的啊～

MonkeyTang

回复 17# 楚大少

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    Idaho is an excellent place for power engineers. Once upon a time I was trying to find opportunities over there. But assuming that in that area it is not easy to get Chinese food and the weather there is cold, finally I gave up the idea.

How do you like there?

楚大少

回复 18# MonkeyTang
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    Idaho is treating me great. There are some great companies around this area, like SEL, power engineers. The weather in the summer is great. But the winter is aweful. It is a great place to establish a family, not really good for the young cause it is kind of boring here. I will try to find a job in the west coast after graduation.

. w1 Q0 C) x. NAre u back in China now?

MonkeyTang

回复 19# 楚大少
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    祝你找工顺利! 你决策很对路, 年轻时在西海岸多挣点, 环境气候很不错. 以后可以多点选择. 我在休斯顿, 见过一个很年轻的小伙子, 在加洲干过几年, 后来因西海岸生活成本高. 到德州读研, 一来就在休城上好的社区买上豪宅. 德州地大房价稳, 经济不错, 生活成本低. 不过休闲的去处不多, 其土气名声在外.