State Grid Zhejiang Electric Power Company completes intelligent transformation of the distribution rooms

"Previously, whenever there was a heavy rain, our property management team would be filled with anxiety. But now, with these protective measures in place, we don't have to worry during the flood season anymore." On May 19, at the Taiyuewan community in Lishui, Zhejiang province, while looking at the underground distribution room that has undergone intelligent flood control transformation, Wang, the community property management head, repeatedly praised the staff members of the State Grid Zhejiang Electric Power Company.

The area is located in the middle reaches of the Oujiang River. As the main flood season approaches, the water level of the river rises, and heavy rainfall occurs frequently. The underground distribution rooms of multiple communities along the river face risks such as flood backflow and equipment failure due to moisture. In response to this situation, the State Grid Zhejiang Electric Power Company has used cutting-edge technologies such as the Internet of Things, big data, and artificial intelligence to create a smart flood control system for underground distribution rooms that is "capable of sensing, thinking, and acting".

The transformation has introduced an advanced intelligent monitoring and drainage system, which can be called a "black technology" for flood control. The millimeter-wave water level sensor in the cable trench can monitor water level changes at the 0.1-millimeter level. Once the water level exceeds the standard, the intelligent drainage pump will be activated immediately, and the system will instantly send alarm information to the operation and maintenance personnel. The design of the visual cable cover plate facilitates operation and maintenance personnel to intuitively check the conditions inside the trench at any time.

Inside the substation, an environment monitoring terminal based on edge computing technology collects 12 types of data in real time, including temperature, humidity, water level, and smoke detection, and uses AI algorithms for risk prediction. When the humidity exceeds the threshold, the system automatically activates the dehumidifier and ventilation system; when local overheating is detected, it immediately triggers an intelligent inspection robot to investigate. "This system is like installing a 'nerve center' for the distribution room, which can not only self-regulate but also provide advance warnings of potential risks," Zhan Weibo, an employee of the State Grid Zhejiang Electric Power Company, displayed the dynamic data model on the system's backend.

In the smart operation and maintenance center of the company, through the IoT platform, data from more than 300 monitoring points in the distribution rooms of 7 communities are updating in real time. The 3D visualization system converts equipment operation status and environmental parameters into intuitive dynamic maps. By tapping the screen, Wang Sheng, the repair duty officer, can access the real-time images and historical data of any distribution room: "With the support of digital technology, we can 'immerse ourselves' in inspecting equipment from the dispatch desk. Once an abnormality occurs, the intelligent work order system will automatically plan the optimal repair path, improving the emergency response efficiency by over 60 percent."

Next, the State Grid Zhejiang Electric Power Company will rely on its existing intelligent monitoring network and use big data analysis technology to deeply mine historical flood conditions and equipment operation data. The company will establish a flood control risk prediction model for distribution rooms to pre-judge high-risk areas and weak links in advance, achieving precise prevention and control. At the same time, the smart flood control system for distribution rooms will be connected to the urban flood control command platform. Through data sharing and collaborative linkage, power flood control work will be integrated into the local overall disaster prevention system, promoting the continuous advancement of power flood control toward intelligence and refinement, and safeguarding the safe power consumption of residents along the Oujiang River.