算法仿真 发表于 2010-3-14 11:56:01

ABB|GE|西门子继电保护产品各自的优点,那个更好?

想请问各位用过ABB,西门子,GE继电保护产品的人,那个更好,或者有其他厂家更好的继电产品吗?

zhpy 发表于 2010-3-14 12:12:24

继电保护南瑞要好吧

zy7239 发表于 2010-3-15 17:23:54

没有最好,只有不错。都能用,国内使用建议还是选用国产的

MonkeyTang 发表于 2010-3-18 01:00:38

Agree strongly to use domestic products in high priority and as much as possible.

But now that LOUZHU is interest in foreigh products, I think GE would be better among ABB, Siemens and GE. In my experience or knowledge:

      . GE digital relays are popular product in US, compared with ABB and Siemens.
      . ABB electral/mechanical (E/M) relays are the most popular products in US. But its digital relays are far less popular than GE's. Its digital design idea was still stuck to E/M ideas, to some extent. That means ABB use digital technology to implement E/M thoughs. Also its manual is not so convenient to use.
      . No experience or idea about siemens relays. So no comments here.
      . Another even better digital relay manufacturer in US is SEL. SEL has more market share than GE in modern relay market.
      . Famous US power company AEP (America Electric Power) use SEL and GE combination as their protection standards.

Just for your refence.

cdc0507 发表于 2010-3-18 03:32:12

楼上这位广告做的也太没水平了吧。在美国当让是用GE的多了,你去欧洲看看GE行吗?国内还是国产的比较好。

MonkeyTang 发表于 2010-3-18 04:54:46

楼上这位广告做的也太没水平了吧。在美国当让是用GE的多了,你去欧洲看看GE行吗?国内还是国产的比较好。
cdc0507 发表于 2010-3-18 03:32 https://tech.cepsc.com/images/common/back.gif

    Welcome to discussion. But please be paying attention to my words:
   
    Agree strongly to use domestic products in high priority and as much as possible.

So we are in the same side.

    In my experience or knowledge

Here all what I said is my knowledge, not official statistics. I appologies for not emphasizing this enough. Most of our clients like SEL products because of their easy of use, at least in Southern US area. And GE products were used by large companies like AEP because they have strict standards to use relays from different manufacturers. Have no ideas of the actual marketing percentage between them. But at least we are comparing products in general, not comparing one specific product in different areas.

zbjiao 发表于 2010-3-18 16:00:25

SEL保护的设计理念和国内的保护相差比较大,SEL保护给整定和运行人员的空间很大,整定略显复杂,在国内曾经也比较流行,但是近几年已经基本上被更换为五大厂家的产品了,继电保护产品有一个用户习惯的问题,所以每家的产品可能有不同的用户群,欧美的企业在售后上面(特指电力行业保护)比国内产品差得很多,他们不愿意根据实际运行条件对保护原理进行调整,这也是他们迅速推出中国市场的原因。现在国内运行的国外高压保护产品也就华东有一些GE的,还有一些西门子的,主要在深圳澳门这些地方。另外,曾经的alstom现在的arewa也曾经在高压保护领域中有过不错的业绩,只是近年来几乎所有的国内高压设备保护全部国产化了,一般都是nari-relay的,nac的,sifang的,或者xj的,所以可以说国外的保护在原理和适应性上再中国市场已经远远落后了,这也是我们继电保护工作者骄傲的一点。

但是必须说明的是,除了在原理和适应性以及服务商取得了一定的领先外,在工艺的精益求精上,在保护装置的稳定性上都还有明显的差距,需要继续努力

yuanzhen 发表于 2010-3-20 08:27:11

记得曾经参加过一次讨论,就是国内的保护用到国外应该注意什么。当时我的看法是最重要的是要注意与国外用户的应用设计规范和行业标准的对接,同样,国外的用到国内,也要面对这些问题,比如我们的六统一,比如我们的沟通三跳等等。关于国内外的保护,我觉得:
1.电网保护,受国内电网结构的影响,我国的电网保护从设计规范到产品开发与应用都更为严谨(当然这里不再谈原理的先进性与否的问题),国外产品的应用必须要面对这一挑战。单纯的就一个振荡闭锁,国内的规范与习惯就基本cut掉所有的国外产品了。
2.元件保护。主设备的保护我觉得我们更多的要向国外来学习,因为诸如ABB、SIEMENS,它们整体是个电力集团模式,本身就生产主设备,所以,对于继保开发,最起码有强大的“对象支持”,他们对主设备的研究更为透彻,而且这是一个几十年、甚至百年积累的过程。比如对于发电机失磁,比如对于注入式接地保护,对于电动机的热过载,比如SSO问题等等。

fond1985 发表于 2010-3-20 21:33:48

国内的售后服务一般都挺好的,国外的售后服务就不行了,但国外的保护相对来说比较灵活一些,各有利弊吧,现在国内的保护也灵活多了

haohao 发表于 2010-3-21 10:11:10

深入了解了一下,多谢各位的讨论。
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