Research on "Load- Grid - Source" Collaborative Optimization Operation Considering Incremental Flexible Load Caused by Electric Power Substitution

Randomness and volatility of the output of the renewable energy, renewable energy consumptive become the world difficult problem. The incremental load capacity of the grid due to the implementation of the "double alternative" strategy becomes another available load side resource in the grid dispatching, in this paper, from the social point of view, to maximize the benefits of the whole society as the goal, taking into account the conventional unit incremental power generation and power grid incremental power loss costs, renewable energy incremental power consumption and different users in different grid policies to respond to power grid scheduling gains, The "load - grid - source" collaborative optimization model based on the new flexible load is established, and the validity and practicability of the model are verified by the improved PJM5 bus system. The simulation results also show that the "load - grid - source" collaborative optimization can improve the level of renewable energy consumption.