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。 ' h x1 |8 K- K2 P$ b+ P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:/ Y1 B* a, | c
KILL = 209. ZnO solution by Newton`s method of 3 coupled arresters has failed due to singularity of the Jacobian matrix. This H$ W+ Z8 z9 v/ f1 Xis measured by tolerance EPSILN, which is defined by the floating-point miscellaneous data card. The iteration count is 0, and& k6 r( Y! \6 M) d* ~1 @$ @
the coupled group of arresters can be identified from the knowledge that the first (in order of input) connects bus "XX0055" with " K$ x0 ^ A* b6 Mbus " ". The simulation time is T = 5.57200000E-02. : ?3 Y3 t5 Q m7 I/ i: ^# X2 R把三个电压表移除就可以运行。 1 T7 h# L5 n: U+ S5 D, _- T如果线路中有重合闸,加上避雷器会出现如下出错信息:! [1 w9 y( D% w
KILL = 212. A Newton solution for 3 coupled nonlinear elements has failed to converge within the iteration limit MAXZNO = 50.8 L# n) c- {8 ]2 W2 [
The current residual is 3.07126887E+00, which exceeds the sloppy convergence tolerance EPSTOP = 1.00000000E-01. The first of ! w# C8 K8 {$ t9 ~the coupled, true, nonlinear elements (in order of data input) is located in row 4 of the nonlinear element table, and it + P1 l0 D. _6 S3 q1 ^. Qconnects node "XX0050" with node " ". The final coupled element is in row 6, and the matrix rank is 3. Finally, the( C: M n6 u( z
simulation time is T = 1.26380000E-01. Possible corrective actions include a decrease in the time-step size DELTAT, an increase+ w$ L1 i d/ B5 `! e# Y/ W
in the iteration limit MAXZNO, an increase in the divergence tolerance EPSTOP, and artificial splitting of the subnetwork in # s6 b0 G; l. Q+ Y: F( d1 w+ B& aquestion by distributed-parameter lines (to reduce the number of coupled elements). In addition, it is possible for the user to 5 O5 m$ ]6 k: H6 `7 x8 J* jmake a solution impossible by unrealistically limiting the Newton corrections. The user should remember that there can be no 8 Q1 F) i3 t! T, P2 ^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, & \* K; [- g! y- L( v/ walthough it can be changed by a"ZINC OXIDE" special request (columns 57-64, variable ZLIN(2)).7 }' p: @6 F' d+ C
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。