Key Technologies for Integration of Multitype Renewable Energy Sources—Research on Multi-Timeframe Robust Scheduling/Dispatch

Large-scale integration of multitype renewable energy (RE) sources (intermittent energy sources) has become an important feature in smart grid development all over the world. It is internationally recognized that the island (or weak-tie connected) power grids are the best platforms for intermittent energy integration test and demonstration because of their abundant RE resources, scarcity of conventional energy, and technical difficulty with accommodation of intermittent energy. The ongoing research on Hainan (the second biggest island in China) power grid will achieve a comprehensive breakthrough in power grid planning, analysis, scheduling, operation, relay protection, security control, disaster prevention, and other key areas in multitype RE source integration. To be specific, this paper focuses on the key part of the research project-optimal scheduling and complementary operation and a new framework of multitime-frame robust scheduling/dispatch system is first proposed, which is different from most other robust approaches and lays special emphasis on the engineering characteristics of power system operation. Simulation results based on the real data of Hainan power grid show that the approach presented is effective and will be put into online operation in the near future.