电气仿真小电流接地系统出现InforNaN的问题-sj1.mdl 出现的是Derivative input 1 of block 'sj1/Three-Phase V-I Measurement2/source/State-Space' at time 0 is Inf or NaN. 不知道有谁可以帮我 我用的是matlab6.5 sj1.mdl matlab6.5