我搭建了一个利用避雷器限制投切并联电容器组操作过电压的模型,未加避雷器就ok,但是加上避雷器后运行总是出错。! E4 ]! g( w) ~+ E
比如加上避雷器后,如果电容器上有量相间电压的电压表,就会出现下面的出错信息: , @7 V8 O7 |* lKILL = 209. ZnO solution by Newton`s method of 3 coupled arresters has failed due to singularity of the Jacobian matrix. This* @4 b7 c, _ {7 ?# Z
is measured by tolerance EPSILN, which is defined by the floating-point miscellaneous data card. The iteration count is 0, and& m$ k! Z# x/ z5 [
the coupled group of arresters can be identified from the knowledge that the first (in order of input) connects bus "XX0055" with 9 l* m" Y8 N4 Rbus " ". The simulation time is T = 5.57200000E-02. / i8 w% k" z- s E" B把三个电压表移除就可以运行。$ d- t+ X4 Y8 ?) Q d. h" h
如果线路中有重合闸,加上避雷器会出现如下出错信息: 7 I7 ^- W1 y- ^: U1 t+ b6 qKILL = 212. A Newton solution for 3 coupled nonlinear elements has failed to converge within the iteration limit MAXZNO = 50.+ w- G9 R8 P, `3 n4 D6 m$ i
The current residual is 3.07126887E+00, which exceeds the sloppy convergence tolerance EPSTOP = 1.00000000E-01. The first of ( B3 |$ ]; o% \: hthe coupled, true, nonlinear elements (in order of data input) is located in row 4 of the nonlinear element table, and it ( _! W9 o; U: {( q7 Jconnects node "XX0050" with node " ". The final coupled element is in row 6, and the matrix rank is 3. Finally, the5 w' }, G$ L! v8 g$ F9 F1 W
simulation time is T = 1.26380000E-01. Possible corrective actions include a decrease in the time-step size DELTAT, an increase 3 ^1 ?8 I- v1 Hin the iteration limit MAXZNO, an increase in the divergence tolerance EPSTOP, and artificial splitting of the subnetwork in 3 t( ~, j$ ^% f+ S P" d! M) ]0 Kquestion by distributed-parameter lines (to reduce the number of coupled elements). In addition, it is possible for the user to9 Z0 z! x' O2 U( T
make a solution impossible by unrealistically limiting the Newton corrections. The user should remember that there can be no4 y; Y2 Q& I6 ]' W( W
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, ) G' p/ |' g9 N3 valthough it can be changed by a"ZINC OXIDE" special request (columns 57-64, variable ZLIN(2)).$ Y( u2 ~$ `+ M* l
已经试了很久,还是找不到解决办法,实在没辙了,请各位帮忙,万分感谢。
其实就是加上避雷器后不收敛了,原来我仿真时也碰到这个问题了 2 D ]$ [% T, B+ s1 Y7 W; D ]8 }可以试着把这个参数改大一点! z& c! [' m h1 ^/ R
ErrLim= Fitting tolerance in pu D; y3 i; o' D: @% L s) w* M' W你输入的伏安特性时数据表吧