Abstract:For power companies, numerous equipment and devices play important roles in their daily operation. Distribution network serves a quite crucial part, which guarantees its better performance and can better the power transmission. That being the case, automation technology emerges in the distribution network application and hence the distribution network automation (DNA) is formed. Aiming at enhancing yet even more the performance of the distribution network automation, this paper studied the application of passive optical network technology in the distribution network automation technology, hoping to lay a sound foundation for the development of China’s power industry.