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

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

seaboy

连续潮流计算

MonkeyTang

回复 1# yongzhe578

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7 w  e$ m* @. ~/ N3 U "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.
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"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.
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2 c& n  \6 ~+ I"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.  

: L8 ~" H  M  a9 m% ~, f8 O5 Y"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.   
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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:
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"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

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
; e( ^7 E- f& Z  M5 G7 y- S2 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
3 h+ n) _/ p/ j& U( N8 A: Z. }) I4 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

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?
$ W+ }7 r: R  B9 p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

大家都挺专业的啊，为什么我就不知道呢，得加强了

yuxunxjm

学习学习！

jack1295254

谢谢啊~！~！~！~！~！~！~！

yanmh2005

学习学习，受教了

KID

看了大家的讨论，挺有用的，学习了呀