A Newton solution for 3 coupled nonlinear elements has failed to converge within the iteration limit MAXZNO = 50.& @: V5 G% v0 u
The current residual is 3.77841495E+02, which exceeds the sloppy convergence tolerance EPSTOP = 1.00000000E-01. The first of! ?( {% g7 k( s/ \! N9 H
the coupled, true, nonlinear elements (in order of data input) is located in row 7 of the nonlinear element table, and it0 Q$ E/ r8 C2 i6 n- L K5 a, a
connects node "X0007C" with node " ". The final coupled element is in row 9, and the matrix rank is 3. Finally, the2 u/ @7 E5 ]5 k8 U3 X( o7 q3 X' u
simulation time is T = 1.08700000E-05. Possible corrective actions include a decrease in the time-step size DELTAT, an increase ) |* r/ j, f. t1 z" P+ s7 Uin the iteration limit MAXZNO, an increase in the divergence tolerance EPSTOP, and artificial splitting of the subnetwork in C0 }0 a- K/ \9 e; x5 Oquestion by distributed-parameter lines (to reduce the number of coupled elements). In addition, it is possible for the user to- Y6 x/ \7 b2 x# C2 i- o: L
make a solution impossible by unrealistically limiting the Newton corrections. The user should remember that there can be no + P3 J3 M: F3 P' Ysolution if his bound on arrester voltage is less than the true solution voltage. The bound has a default value of 1.5 per unit, / o V) i# {" R3 J- V3 Walthough it can be changed by a"ZINC OXIDE" special request (columns 57-64, variable ZLIN(2)). Is this parameter involved? The 1 {: f/ {% f# k0 pnumber of solution variables that are being limited this way is 0. If this value is positive, think hard about ZLIN(2).