A Newton solution for 3 coupled nonlinear elements has failed to converge within the iteration limit MAXZNO = 50./ ^2 V5 T, u& ^, A( C, c
The current residual is 3.77841495E+02, which exceeds the sloppy convergence tolerance EPSTOP = 1.00000000E-01. The first of$ g" i: p* Q c
the coupled, true, nonlinear elements (in order of data input) is located in row 7 of the nonlinear element table, and it ) M1 V* X, K8 F/ J# X' F' qconnects node "X0007C" with node " ". The final coupled element is in row 9, and the matrix rank is 3. Finally, the ( N( o7 T& v- ^* B/ y6 s( ssimulation time is T = 1.08700000E-05. Possible corrective actions include a decrease in the time-step size DELTAT, an increase # n) z* g1 M, S9 ~, `$ T; A/ g" Win the iteration limit MAXZNO, an increase in the divergence tolerance EPSTOP, and artificial splitting of the subnetwork in9 S* S! F8 n1 b% v0 N
question by distributed-parameter lines (to reduce the number of coupled elements). In addition, it is possible for the user to 1 Z6 u# Y; U% @5 d( G d* ~make a solution impossible by unrealistically limiting the Newton corrections. The user should remember that there can be no / P6 k6 m% U$ z( s7 osolution if his bound on arrester voltage is less than the true solution voltage. The bound has a default value of 1.5 per unit, : g0 k, x4 k8 u' K0 P0 t9 n, galthough it can be changed by a"ZINC OXIDE" special request (columns 57-64, variable ZLIN(2)). Is this parameter involved? The 2 k/ `+ `, R6 X ]/ q& V7 C# }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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