Smart Flood Prevention Technology Enhances Power Supply Reliability in Zhejiang's Plum Rain Season

Since the start of the Meiyu (plum rain) season, Hangzhou, Zhejiang, has experienced several consecutive days of rainfall. Facing the dual challenges of peak summer electricity demand and the Meiyu season, State Grid Zhejiang Electric Power Co., Ltd. has enhanced its rapid response mechanism, integrated internal and external emergency resources, utilized digital tools, and coordinated flood control efforts to comprehensively reinforce power supply protection and ensure the safe and stable operation of the power grid during this period.

On June 23, at the 220-kilovolt Longyin Substation in Hangzhou, Xie Shichao and Liang Shengping, employees of State Grid Hangzhou Power Supply Company, followed the equipment inspection route to carefully check the operation of water pumps and substation equipment. "The water pumps are working normally, the water level in the cable trench is normal, the waterproof layer is intact, and there are no leakage points," Liang Shengping recorded in his patrol log while inspecting the devices.

State Grid Zhejiang Power Employees Inspect Electrical Equipment at the 220kV Longyin Substation

In addition to manual inspections, the Smart Flood Prevention Brain system plays a crucial role at the 110kV Linchang Substation, located tens of kilometers away.

To promptly monitor waterlogging conditions in unmanned substations, State Grid Zhejiang Electric Power Co., Ltd. has implemented digital twin technology to build the Smart Flood Prevention Brain integrated management platform for substations. By integrating meteorological, hydrological, and early warning information, the platform enables comprehensive monitoring of substation waterlogging status through automatic data collection and real-time sharing. It also streamlines processes such as emergency reporting, resource dispatch, command and control, and information release. This system allows for an efficient whole-process response, handling, and command during heavy rainfall events, covering the pre-event, during-event, and post-event stages.

Employees of State Grid Zhejiang Power Check Equipment Information via the Substation "Smart Flood Prevention Brain" Integrated Management Platform

Looking ahead, State Grid Zhejiang Electric Power Co., Ltd. will increase inspection frequencies during extreme weather events, focusing on power equipment located along riverbanks and in low-lying areas. The company will promptly address any hidden defects that could affect grid safety. Meanwhile, it will maintain close communication with meteorological departments, optimize emergency repair resources, strengthen reserves of emergency supplies, and enhance the construction of emergency teams. By implementing a three-dimensional prevention and control system combining "human defense + material defense + intelligent defense," the company aims to ensure the reliable operation of grid equipment under extreme weather conditions. (Tang Chen, Fang Jia)