Opportunity Constraint-Based Planning Model for Source-Grid-Load Coordination Expansion of Water-Wind-Solar Hybrid Power System

While the penetration rate of wind power continues to increase, the uncertainty of wind power output also poses new challenges to the safe operation of the power grid. The use of stepped hydroelectric power plants to compensate for the intermittency of wind farms can suppress the power fluctuations of wind farms effectively. To this end, a source-grid-load coordinated expansion planning model for water-wind-solar complementary power system based on opportunity constraints is proposed to improve the consumption capacity of clean energy sources such as water-wind-solar. Firstly, the detailed modeling of terraced hydropower plants and direct current (DC) outgoing as well as demand response is carried out; secondly, the demand response service planning model is proposed by introducing the demand response resource to reduce the intermittency of wind power generation.at last, an opportunity constraint model is established to ensure the security of the system operation and the effective consumption of the wind and solar power outputs, and a strong expansion formula based on the sample-averaged The strong expansion formula of the approximation method is utilized to transform the opportunity constraint model into a mixed-integer linear programming problem for solving.