A Newton solution for 3 coupled nonlinear elements has failed to converge within the iteration limit MAXZNO = 50.) R$ a1 t8 N0 b- K7 z) T9 a
The current residual is 3.77841495E+02, which exceeds the sloppy convergence tolerance EPSTOP = 1.00000000E-01. The first of , c" x6 a+ ^* R3 G$ kthe coupled, true, nonlinear elements (in order of data input) is located in row 7 of the nonlinear element table, and it0 _$ E, U! f/ y
connects node "X0007C" with node " ". The final coupled element is in row 9, and the matrix rank is 3. Finally, the . L* r, p a: J0 k; w' \1 R! usimulation time is T = 1.08700000E-05. Possible corrective actions include a decrease in the time-step size DELTAT, an increase 7 m6 K' v6 Z. y; m6 R: Y! x) zin the iteration limit MAXZNO, an increase in the divergence tolerance EPSTOP, and artificial splitting of the subnetwork in 2 ]. K8 }4 O; B! F- xquestion by distributed-parameter lines (to reduce the number of coupled elements). In addition, it is possible for the user to - P/ i# h5 r9 L' |make a solution impossible by unrealistically limiting the Newton corrections. The user should remember that there can be no y) U. x5 j. H$ l Vsolution if his bound on arrester voltage is less than the true solution voltage. The bound has a default value of 1.5 per unit, 3 P- z. J3 S) N+ }( j+ salthough it can be changed by a"ZINC OXIDE" special request (columns 57-64, variable ZLIN(2)). Is this parameter involved? The5 e& \! q1 o3 ~! M4 ^, q2 `
number of solution variables that are being limited this way is 0. If this value is positive, think hard about ZLIN(2).
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发表于 2015-4-29 20:50:20
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