在matlab环境中自动识别连通区域的大小,电力系统暂态稳定程序，可以进行暂态稳定计算,计算十字叉丝的在不同距离的衍射图像。- Automatic identification in the matlab environment the size of the connected area, Power System Transient Stability Program, can be transient stability, Calculation crosshairs diffraction image at different distances.