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。* V# X8 C4 ]' l# S8 R' R' K) o
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： - C; F) v1 T" m4 `: F. o3 Z- O# ^KILL = 209. ZnO solution by Newton`s method of 3 coupled arresters has failed due to singularity of the Jacobian matrix. This ; N; u8 O, e# f( E' Qis measured by tolerance EPSILN, which is defined by the floating-point miscellaneous data card. The iteration count is 0, and! Q' J' H9 ?6 [8 Y$ g2 L% ?
the coupled group of arresters can be identified from the knowledge that the first (in order of input) connects bus "XX0055" with+ q) [/ t2 K* T% D$ \$ j, Z7 i
bus " ". The simulation time is T = 5.57200000E-02. 2 H+ U C/ u4 c% n9 }0 M" L2 x把三个电压表移除就可以运行。 0 ^8 o ]; Q9 B5 y: o如果线路中有重合闸，加上避雷器会出现如下出错信息： 8 w/ [' C ? o' ^9 }; TKILL = 212. A Newton solution for 3 coupled nonlinear elements has failed to converge within the iteration limit MAXZNO = 50.1 P: a) `" _: ]
The current residual is 3.07126887E+00, which exceeds the sloppy convergence tolerance EPSTOP = 1.00000000E-01. The first of. b; q4 I) c5 W7 w# Q
the coupled, true, nonlinear elements (in order of data input) is located in row 4 of the nonlinear element table, and it $ W3 Q: H' h5 z" zconnects node "XX0050" with node " ". The final coupled element is in row 6, and the matrix rank is 3. Finally, the 8 u. O: U+ i! U3 G: L( I" esimulation time is T = 1.26380000E-01. Possible corrective actions include a decrease in the time-step size DELTAT, an increase : X9 R/ u( Y% Y' O$ K9 V" sin the iteration limit MAXZNO, an increase in the divergence tolerance EPSTOP, and artificial splitting of the subnetwork in3 x9 R5 c" n6 \0 q
question by distributed-parameter lines (to reduce the number of coupled elements). In addition, it is possible for the user to : g9 \; T5 X! |, ^( T2 q# u smake a solution impossible by unrealistically limiting the Newton corrections. The user should remember that there can be no- I) R5 ^; h6 z
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, # {+ Z% \; P4 p; N, t( d; falthough it can be changed by a"ZINC OXIDE" special request (columns 57-64, variable ZLIN(2)).$ o/ {+ W# G8 E( k' K
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。
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发表于 2011-1-11 09:33:04
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