In view of the situation of renewable energy development being large-scale and centralized in China

the necessity and characteristics of renewable energy dispatch are analyzed. Since the traditional dispatching technology supported system has been unable to deal with the challenge posed by large-scale renewable energy integration

a coordinated optimized renewable energy dispatching technology based on multi-time scale is introduced. The dispatching technology includes annual and monthly renewable energy schedule making and day-ahead and intraday rolling optimal dispatching. Based on the basic platform of smart grid dispatching and control system (D5000 platform)

a renewable energy dispatching technology supported system is developed. This system is able to realize coordinated optimized renewable energy dispatching of multi-time scale

while gradually reducing the impact of forecast error and ensuring the security accommodation of renewable energy. The research results are in application in 16 regional or provincial grids.