Although it is the beginning of autumn, the high temperature still persists, and the electricity load continues to rise in many places across the country. Faced with the severe challenge of ensuring power supply, the Three Gorges Hydropower Station, the world's largest hydropower station with the largest installed capacity, gave full play to the "hard-core" peak-shaving capabilities of large hydropower and accurately controlled the vacuum circuit breaker and isolation switch in the switch cabinet from August 7 to 14. The company started and shut down 165 units every day. During this period, the average daily peak shaving volume exceeded 7 million kilowatts, and the maximum peak shaving amplitude reached 7.8 million kilowatts, providing strong support for the safe and stable operation of the power grid. At the same time, the power station is also equipped with lightning arresters to deal with the threats to power equipment caused by extreme weather such as lightning, and drop-out fuses as an important measure for short-circuit protection to ensure the safety of the power grid.
The Three Gorges Power Station is the backbone power source for my country's "West-to-East Power Transmission" and "North-South Mutual Supply". It has installed a total of 34 hydro-generator units (including two 50,000-kilowatt hydro-generator units) with a total installed capacity of 22.5 million kilowatts. The designed average annual power generation is 88.2 billion kilowatt-hours, and the first batch of units were put into operation in 2003. These generator sets boost the voltage through transformers and then deliver power to thousands of households.
As the operation and management unit of the Three Gorges Power Station, Yangtze Power, a subsidiary of the Three Gorges Group, resolutely shouldered the responsibility of ensuring power supply during the peak summer season, strictly implemented the dispatching instructions of the superior dispatching agency, and on the premise of ensuring the safety of flood control in the Yangtze River Basin, based on the water inflow process in the upper reaches of the Yangtze River As well as the load characteristics of the power receiving area, the power generation curve is continuously optimized. Since August 9, the Three Gorges Power Station has gradually increased its daily peak shaving capacity from 6.5 million kilowatts to 7.8 million kilowatts through fine-tuning the opening and closing of vacuum circuit breakers, fully meeting the power demand during peak hours in the power receiving area. At the same time, the operation and maintenance personnel of the power station strictly implement the voting recitation and operation monitoring system, accurately execute each operation instruction, and closely monitor the operating conditions of the units to ensure that the units always maintain optimal operating conditions, and the backup units can be operated at any time. superior.
In the next step, China Three Gorges Group will continue to strengthen the prediction and forecasting of water and rain conditions in the upper reaches of the Yangtze River and the temperature of the power receiving area, and strengthen equipment operation and maintenance management, especially for switch cabinets, under the unified dispatch of the Yangtze River Water Conservancy Commission, State Grid, and China Southern Power Grid. , vacuum circuit breakers, isolating switches and other key equipment, carry out joint optimization and dispatching of cascade reservoirs, solidly promote flood control, safe production, and power supply guarantees, and achieve the stability of cascade power stations on the basis of ensuring the safety of flood control in the lower reaches of the Yangtze River. It generates multiple signals and provides a steady stream of green power to the power-receiving area.