A Newton solution for 3 coupled nonlinear elements has failed to converge within the iteration limit MAXZNO = 50.4 t6 R. T, o# i3 C7 ]% }2 {
The current residual is 3.77841495E+02, which exceeds the sloppy convergence tolerance EPSTOP = 1.00000000E-01. The first of " e6 U0 z3 u/ p$ A, bthe coupled, true, nonlinear elements (in order of data input) is located in row 7 of the nonlinear element table, and it0 B; S" b! ]- ?3 @! T, |- X1 l
connects node "X0007C" with node " ". The final coupled element is in row 9, and the matrix rank is 3. Finally, the 7 v2 n: d; k' R1 I+ k3 W. |+ L0 S" o l* L9 Usimulation time is T = 1.08700000E-05. Possible corrective actions include a decrease in the time-step size DELTAT, an increase # c% U" ]! N" c% F9 m0 o# |in the iteration limit MAXZNO, an increase in the divergence tolerance EPSTOP, and artificial splitting of the subnetwork in & I6 e. L& r% q) \; p. w. Tquestion by distributed-parameter lines (to reduce the number of coupled elements). In addition, it is possible for the user to + H) l9 F: ?& X; `( _' U; Bmake a solution impossible by unrealistically limiting the Newton corrections. The user should remember that there can be no# c2 P& ? Q M0 y7 m8 i% l
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, 0 Y* b6 o/ @ F3 q5 Jalthough it can be changed by a"ZINC OXIDE" special request (columns 57-64, variable ZLIN(2)). Is this parameter involved? The5 y2 C! D. g. n5 t7 B3 I- x$ G
number of solution variables that are being limited this way is 0. If this value is positive, think hard about ZLIN(2).