The GPON power communication solution has been implemented, ensuring the "safe and stable" operation of the power system

The stable operation of the power system cannot do without the support of a reliable communication network. Recently, the passive optical network technology team has launched a customized GPON power communication solution. This solution, with "high anti-interference", "redundant backup" and "real-time monitoring" at its core, can meet the data transmission requirements among substations, distribution stations and power dispatching centers in the power system. It has been applied in the distribution network renovation project of a domestic power grid company. The incidence of power communication failures has decreased by 60%. ​

In terms of technical design, this GPON power communication solution fully takes into account the particularity of power scenarios: Firstly, it adopts a "fiber optic transmission shielding design". Fiber optics have the characteristic of resisting electromagnetic interference, which can prevent high-voltage equipment in the power system from interfering with communication signals. Meanwhile, the OLT and ONU devices are equipped with metal casings and shielded cables, further enhancing their anti-interference capabilities and ensuring stable operation in lightning and high-voltage environments. The second is to deploy "dual-link redundancy". Substations and distribution stations are connected through two independent GPON links. When one link fails, the system can automatically switch to the backup link within 50ms to ensure the uninterrupted transmission of power dispatching data. Thirdly, it integrates the "power equipment monitoring function". Temperature and voltage sensors are built into the ONU equipment, which can monitor the operation status of the equipment in the distribution station in real time. The data is uploaded to the power dispatching center through the GPON network. When the equipment experiences situations such as excessively high temperature or abnormal voltage, the dispatching center can promptly issue a warning to prevent power outages caused by equipment failure. ​

In the distribution network renovation project of a certain power grid company, this scheme achieved communication access for over 200 distribution stations. The transmission delay of power dispatching data was controlled within 8ms, and the data packet loss rate was 0. Meanwhile, through the equipment monitoring function, more than ten abnormal conditions of the distribution station equipment were successfully warned, thus avoiding multiple power outage accidents. The communication director of the power grid company stated: "The reliability and stability of the GPON power communication solution far exceed those of traditional communication methods, not only ensuring the safety of the power system.Full operation has also reduced the maintenance cost of communication networks, laying a solid foundation for the construction of smart grids. ​

At present, this GPON power communication solution has been promoted and applied in many power grid companies across the country. In the future, more specialized solutions will be launched to meet the communication needs of new energy power stations (such as photovoltaic power stations and wind power stations), to facilitate the efficient transmission and management of new energy power.