With the rapid development of new energy technology, the massive access to related equipment such as distributed photovoltaic devices and energy storage devices performs a huge impact on the quality, safety, and stability of the operation of the power grid. In the current stage, the Broadband Power Line Carrier HPLC technology has been widely applied for the access of distributed photovoltaic devices to perform data collection and transmission functions. However, due to the limitation of the HPLC networking method and communication mode, the current communication system exists problems such as long-distance node communication could not be covered, power line communication is susceptible to interference, and could not be safely and accurately controlled in real-time, which is difficult to achieve broad and reliable access of devices. Therefore, this paper proposes a novel concept that is using 4G technology to replace HPLC technology to help realize local communication in the smart distribution network. According to the practical test results, the current design could operate stably and efficiently which provides a practical reference for relevant research.