Abstract:Because of the great number and large capacity of hydropower plants in Sichuan province,and the particularly complicated security constraints of power gird,power generation plan adjusted in real time is very difficult,especially in intraday spot market. Intelligent generation dispatching system is developed to meet the needs. The system can work out real - time rolling power generation plan and send to power plants in batches. Day - ahead generation schedule,ultra - short - term load forecasting and grid security constraints are considered,and invalid data is filtered. The operational practice for about one year shows the correctness of real - time rolling power generation plan by this system,the swiftness of sending orders to power plants and the timeliness of meeting the demand of intraday spot market.