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。6 M$ }. D. V; }9 ^1 F/ F5 M
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: : f$ w# @ M8 H: X6 b, P4 s; t( @, R/ _KILL = 209. ZnO solution by Newton`s method of 3 coupled arresters has failed due to singularity of the Jacobian matrix. This 7 |( z: L" S1 P0 Uis measured by tolerance EPSILN, which is defined by the floating-point miscellaneous data card. The iteration count is 0, and ) v! D* p) V. U$ O( r" ]2 R7 fthe coupled group of arresters can be identified from the knowledge that the first (in order of input) connects bus "XX0055" with ! Q/ ^8 i# [7 d [6 b( C$ ?bus " ". The simulation time is T = 5.57200000E-02. t }- ]% m. ~
把三个电压表移除就可以运行。1 Z( ]" Q7 O7 e/ e% S. N9 W
如果线路中有重合闸,加上避雷器会出现如下出错信息: + P2 W1 f; S* R; v5 J& B0 y5 TKILL = 212. A Newton solution for 3 coupled nonlinear elements has failed to converge within the iteration limit MAXZNO = 50. & y9 B. y' t. H% S* iThe current residual is 3.07126887E+00, which exceeds the sloppy convergence tolerance EPSTOP = 1.00000000E-01. The first of . D* K) c3 ]4 D* v u8 cthe coupled, true, nonlinear elements (in order of data input) is located in row 4 of the nonlinear element table, and it 2 r% J) [ S7 fconnects node "XX0050" with node " ". The final coupled element is in row 6, and the matrix rank is 3. Finally, the : t% L3 X# D% \1 E9 C. ?! U. ]% {simulation time is T = 1.26380000E-01. Possible corrective actions include a decrease in the time-step size DELTAT, an increase# q0 F+ c8 @. K2 a$ W
in the iteration limit MAXZNO, an increase in the divergence tolerance EPSTOP, and artificial splitting of the subnetwork in {. J0 D# z8 Oquestion by distributed-parameter lines (to reduce the number of coupled elements). In addition, it is possible for the user to 3 k# h" d* @7 ~8 Umake a solution impossible by unrealistically limiting the Newton corrections. The user should remember that there can be no0 b; T( ]2 {/ D0 R" h
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, # u1 V6 E; `6 l3 _6 J1 k3 salthough it can be changed by a"ZINC OXIDE" special request (columns 57-64, variable ZLIN(2)).5 ]8 p" ^9 w/ O8 O0 R5 q( W8 z3 F
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。