请问区域潮流断面的热稳极限，暂稳极限，动稳极限以及静稳极限怎么求取

yongzhe578 · 发表于 2010-1-17 11:16:47

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seaboy · 发表于 2010-3-19 15:59:07

连续潮流计算

MonkeyTang · 发表于 2010-3-19 23:48:03

回复 1# yongzhe578

"热稳极限" is a kind of conductor property. You should be able to find it from conductor manuals. Try to not exceeding a conductor's "热稳极限" by running a normal power flow analysis and any other contingency analysis. In simple, don't burn your conductor.

"静稳极限" could be calculated by ignoring any dynamic models like exiter, governor, stabilizer, etc. Typically this value could be calculated without doing a real time simulation and then it could be provided by an on-line analysis software.

"动稳极限", similar to "静稳极限", with control devices like exciter modeled. Both "静稳极限" and "动稳极限" apply to small disturbance.

"暂稳极限" is used to make sure the system will come back to previous stable state or changed stable state after a big disturbance like a fault, generator disconnection, reclosing. It needs a real time simulation and it is not possible for an on-line analysis software to provide such analysis currently.

Most popular stability analysis software should be able to provide these analysis for you. For theoretical understanding, I would recommend you to read page 133 of professor Ni-Yi-Xin's book "Dynamic Power System Theory and Analysis" which could be found here:

"倪以信-动态电力系统的理论和分析.高清晰PDF"
https://tech.cepsc.com/viewthread.php?tid=39421&extra=&highlight=%B6%AF%CC%AC%B5%E7%C1%A6%CF%B5%CD%B3%B5%C4%C0%ED%C2%DB%BA%CD%B7%D6%CE%F6&page=1

seaboy · 发表于 2010-3-25 20:26:36

请问区域潮流断面的热稳极限，暂稳极限，动稳极限以及静稳极限
1 热稳极限考虑的主要是断面输电线路自身的传输容量极限只要不损害输电线就OK
2 暂稳极限是发生断面一天线路继电保护装置跳开断线或者发生短路断开后其它输电线路能否保证断面传输的要求 N-1 校验算法
3 静态稳定极限是断面承担的功率逐渐增加，应用连续潮流计算到潮流方程雅可比矩阵奇异即SNB点
4 动态稳定极限接触不多
应当是考虑了各种控制装置的调节作用时的极限点

KEKESUISUI · 发表于 2010-4-2 14:48:38

对不起我的大学是在国外读的,所以中文术语不是太好,断面是不是只的是因为一些情况而断开某根输电线?
动态稳定应该是dynamic stability吧，应该是用一个small signal analysis的工具（小信号研究？）来研究，研究模型中generator control system也需要包括。这个analysis就是对所研究电网的state space matrix做eigenvalue study。所得的eigenvalue即表明震荡的damping和频率。damping需为负值。我猜你的问题就是看当某条输电线被断开后，是否有某个震荡的damping不够而引发发电机组的tripping吧。

dujinsong1986 · 发表于 2010-4-2 18:10:28

大家都挺专业的啊，为什么我就不知道呢，得加强了

yuxunxjm · 发表于 2010-4-5 08:00:34

学习学习！

jack1295254 · 发表于 2010-10-22 17:26:03

谢谢啊~！~！~！~！~！~！~！

yanmh2005 · 发表于 2011-12-19 20:08:01

学习学习，受教了

KID · 发表于 2012-1-28 13:41:04

看了大家的讨论，挺有用的，学习了呀

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