我搭建了一个利用避雷器限制投切并联电容器组操作过电压的模型，未加避雷器就ok，但是加上避雷器后运行总是出错。7 M# u, t# N" m. N
比如加上避雷器后，如果电容器上有量相间电压的电压表，就会出现下面的出错信息： & t. Z4 p0 c, V4 _: A+ LKILL = 209. ZnO solution by Newton`s method of 3 coupled arresters has failed due to singularity of the Jacobian matrix. This1 U. S6 |( I6 f" g
is measured by tolerance EPSILN, which is defined by the floating-point miscellaneous data card. The iteration count is 0, and9 ?$ X( @ M; b! G: v3 e. Z) C
the coupled group of arresters can be identified from the knowledge that the first (in order of input) connects bus "XX0055" with( G u, x* F. g
bus " ". The simulation time is T = 5.57200000E-02. , F, Z5 [; P: I' K把三个电压表移除就可以运行。* T% a- K$ O1 X4 E
如果线路中有重合闸，加上避雷器会出现如下出错信息： 6 W+ h( c- p. [ V( x3 AKILL = 212. A Newton solution for 3 coupled nonlinear elements has failed to converge within the iteration limit MAXZNO = 50. - z4 d) |& ]- {3 O1 NThe current residual is 3.07126887E+00, which exceeds the sloppy convergence tolerance EPSTOP = 1.00000000E-01. The first of - A5 i( Q. \0 W3 ythe coupled, true, nonlinear elements (in order of data input) is located in row 4 of the nonlinear element table, and it ( t- k9 j. O3 K+ a; wconnects node "XX0050" with node " ". The final coupled element is in row 6, and the matrix rank is 3. Finally, the& P0 f7 R8 c6 \' k4 X
simulation time is T = 1.26380000E-01. Possible corrective actions include a decrease in the time-step size DELTAT, an increase - {- U) ?% r. ~. Fin the iteration limit MAXZNO, an increase in the divergence tolerance EPSTOP, and artificial splitting of the subnetwork in 4 f9 P# K- m! f& ? F1 b! yquestion by distributed-parameter lines (to reduce the number of coupled elements). In addition, it is possible for the user to) u& w6 x, k n2 M! i
make a solution impossible by unrealistically limiting the Newton corrections. The user should remember that there can be no ) N$ H& s6 ?6 }solution if his bound on arrester voltage is less than the true solution voltage. The bound has a default value of 1.5 per unit,8 Y5 o. q. }* [! z) r. D
although it can be changed by a"ZINC OXIDE" special request (columns 57-64, variable ZLIN(2)). & q( Q# g/ I3 Q已经试了很久，还是找不到解决办法，实在没辙了，请各位帮忙，万分感谢。
其实就是加上避雷器后不收敛了，原来我仿真时也碰到这个问题了" k3 x% E+ f4 O7 p; b
可以试着把这个参数改大一点# h [- H* D! W b) l) t
ErrLim= Fitting tolerance in pu 2 O6 x) W& K k) k0 R! T+ |6 @你输入的伏安特性时数据表吧
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发表于 2011-1-11 09:33:04
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