psse加入风电场特征值分析
当在PSSE中加入风电场模型后，进行特征值分析计算时，在执行完ASTR指令后，出现如下错误：12 diagonal and 11 off-diagonal elements
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION2
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION3
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION4
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION5
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION6
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION7
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION8
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION9
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION 10
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION 11
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION 12
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION 13
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION 14
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION 15
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION 16
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION 17
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION 18
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION 19
WT1G1 AT BUS 4 MACHINE 4 : INNER LOOP NOT CONVERGED ON OUTER ITERATION 20
WT1G1 AT BUS 4 MACHINE 4 : UNABLE TO MEET LOAD FLOW P WITH MODEL REACTANCES
WT1G1 AT BUS 4 MACHINE 4 : X'=0.17730 IM(ZSORCE) =1.00000
Model GENROU Bus 1 Machine "1 " :
X'D = 0.25, imaginary part of complex machine impedance (ZSORCE) = 1.0, differ by > 0.000005
Model GENROU Bus 2 Machine "2 " :
X'D = 0.25, imaginary part of complex machine impedance (ZSORCE) = 1.0, differ by > 0.000005
Model GENROU Bus 3 Machine "3 " :
X'D = 0.25, imaginary part of complex machine impedance (ZSORCE) = 1.0, differ by > 0.000005
PTI INTERACTIVE POWER SYSTEM SIMULATOR--PSS(R)E FRI, OCT 23 201510:18
INITIAL CONDITION LOAD FLOW USED 15 ITERATIONS
----------------------------- MACHINE INITIAL CONDITIONS -----------------------------
BUS# X-- NAME --X BASKV IDETERM EFD POWER VARS P.F.ANGLE ID IQ
1 WEST 20.000 1 NaN NaN NaN NaN NaN NaN NaN NaN
2 WEST 20.000 2 NaN NaN NaN NaN NaN NaN NaN NaN
3 EAST 20.000 3 NaN NaN NaN NaN NaN NaN NaN NaN
4 EAST 0.6900 41.0359 0.0000 NaN NaN NaN NaN NaN NaN
INITIAL CONDITIONS CHECK O.K.
请问是什么原因？（前面错误信息懂得，不用翻译。）NaN是什么意思？ NaN是 not a number一般是无穷大什么的 应该是积分时发散了 或是除0错误
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