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。 1 ?+ W! r) y" j8 c7 ?, f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:" S% c# O" s9 Q( d" [* ~
KILL = 209. ZnO solution by Newton`s method of 3 coupled arresters has failed due to singularity of the Jacobian matrix. This ; X( E0 @% h; X! k1 M3 O; K$ dis measured by tolerance EPSILN, which is defined by the floating-point miscellaneous data card. The iteration count is 0, and : M; S% w9 z$ v/ k- `& jthe coupled group of arresters can be identified from the knowledge that the first (in order of input) connects bus "XX0055" with ! `/ y# T9 [. o& ]) f, Pbus " ". The simulation time is T = 5.57200000E-02.0 P9 i& S' a* F6 X/ x3 Z2 U+ s$ H) K/ B
把三个电压表移除就可以运行。' g' D9 P. w# X+ z* r
如果线路中有重合闸,加上避雷器会出现如下出错信息: 6 U2 ]) X M+ CKILL = 212. A Newton solution for 3 coupled nonlinear elements has failed to converge within the iteration limit MAXZNO = 50. : a: [( S q) @) `7 p0 z' e6 [1 CThe current residual is 3.07126887E+00, which exceeds the sloppy convergence tolerance EPSTOP = 1.00000000E-01. The first of " w, ?4 ~" N6 W9 y2 m5 [' u+ @- a# O* r! ethe coupled, true, nonlinear elements (in order of data input) is located in row 4 of the nonlinear element table, and it & I( O$ k) N2 D: ^connects node "XX0050" with node " ". The final coupled element is in row 6, and the matrix rank is 3. Finally, the- v* s1 V9 A2 S0 @' ?' G% J# u$ a
simulation time is T = 1.26380000E-01. Possible corrective actions include a decrease in the time-step size DELTAT, an increase$ a: y# b3 k& b/ I* ^
in the iteration limit MAXZNO, an increase in the divergence tolerance EPSTOP, and artificial splitting of the subnetwork in9 `3 @9 V/ K7 a0 G* X; N
question by distributed-parameter lines (to reduce the number of coupled elements). In addition, it is possible for the user to9 G* Y" ?0 u, @$ G/ U* u1 F
make a solution impossible by unrealistically limiting the Newton corrections. The user should remember that there can be no# t1 R8 v5 k8 K
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 j% R9 X5 a8 k8 j. p
although it can be changed by a"ZINC OXIDE" special request (columns 57-64, variable ZLIN(2)).! j+ O% |( I& N$ w! E, g
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。