City Restarter

On the night of the red rainstorm warning, in the Nanjiang City Urban Lifeline Engineering Center, the voltage curve of a 220kV bus in the West Ring Road dropped slightly for 3.4 Seconds. No limit exceeded, no alarm, the system still displays green. Everyone thought it was just a heavy rain disturbance. Only Chen Xu, the commissioning engineer, stared at the curve and said: It appeared too early. Seven minutes later, the traction current of Rail Transit Line 3 fluctuated. Afterwards, the backup load of environmental control in the south of the city increased, the No. 3 Pumping station in the east district became abnormal, the UPS refresh of the first hospital timed out, and the communication base station temporarily stopped serving. Power grids, rail transit, hospitals, drainage, and communications, the urban lifelines that originally belonged to different systems, were tightened step by step along the invisible risk propagation chain by a heavy rain. The system recommends waiting for more alerts. Chen Xu said that he could not wait. Because by the time the system knows enough, the accident has already happened. He does not have the highest authority, nor can he directly issue dispatching orders. He can only use the timeline, manual verification, on-site feedback, old drawings and yellow warnings that have not been recognized by the system to make up for the invisible truth of the platform bit by bit. This is not an urban crisis that can be solved by pressing a button. This is when someone sees the breaking thread before cross-system risks expand.