GIS母线波阻抗如何计算

大笨蛋

最近学习下变电所雷电过电压计算方面的论文，基本上都是采用波阻抗及波速来描述GIS母线的管线特性，ATP-MTP自带算例EXA—9也是这么做的。采用linezt—3模型，需计算母线的零序、正序波阻抗及波速，但不知道参数怎么计算，望高手进指点下。

zmxpig

好像有相关的论文吧

athuhu

我记得在哪见过~~~~不好意思，忘记了，难道是某个GB上？

rstelectric

不知是多少kv的GIS
110KV  100Ω 250m/us
) m( {/ {1 u9 A. b1 Y220kV    70Ω 250m/us

rstelectric

110kV的电缆 18Ω 150m/us

大笨蛋

波阻抗应该有正序、零序的说法吧，linezt—3模型里需填写A+、A0，B+、B0的，line=1 时A=Modal surge impedance in [ohm] Z=sqrt(L'/C')  A+  = Pos. sequence.   A0  = Zero sequence.
B=propagation velocity in [length/sec.] v=1/sqrt(C'*L') B+  = Pos. sequence   B0  = Zero sequence.

redplum

多谢楼上的资料

rstelectric

Name : LINEZT_3 - Distributed parameters (Clarke) 3 phase. Transposed
Card : BRANCH
Data:  Values are entered in the two independent modes of the system, here called + and 0.
         R/l= Resistance pr. length in [Ohm/m]
              The lossless part can be described in three ways
              0. Inductance L' in [mH/m] if Xopt=0 or in [ohm/m] if Xopt=power frequency
- y/ _# E: T6 X! e' ?                 Capacitance C' in [uF/m] if Copt=0 or in [uMho/m] if Copt=power frequency
              1. Modal surge impedance in [ohms]; Z=sqrt(L'/C')
8 ^+ c- M, |1 a- C9 R                 Modal propagation velocity in [m/s]; v=1/sqrt(L'*C')
              2. Modal surge impedance in [ohms]
+ {) y9 s" `/ c% F5 {: n                 Modal propagation time in ; T=sqrt(L'*C')*length     
1 |$ E) R% ?8 v1 b/ j, ^              Xopt. and Copt. are set in menu: ATP|Settings/Simulation.
              The user can choose conductance modeling G=0 (the usual case) and G=R*C/L (distortionless)
      length= length of line in [m]
Node :   IN1= Start node. Letter 'A', 'B' or 'C'
# Z- v  K/ @1 g5 ~  j' r              is added to nodename for node 1, 2 and 3.
: M: w5 h1 T( i        OUT1= End node. Letter 'A', 'B' or 'C'
* E! Y6 e( Q/ F8 s) q" }+ b2 R              is added to nodename for node 1, 2 and 3.
Only branch voltage output is reliable.
* v3 V" v, b3 L3 V) K$ P" `0 P/ jRuleBook: IV.D.1

rstelectric

我的linezt-3没有+ - 0

大笨蛋

是电网绝缘配合及其模拟的计算导则吗？