Optimal dispatch of power grid under direct power purchase by large consumers

Direct power purchase by large consumers is a good attempt to adjust the power price by market means, which is in favor of exploring a reasonable price formation mechanism and promotes the establishment of an open electricity market. To make the wheeling price and power loss minimum as the target, the paper presents a method based on the flow tracing, tracing the source of large power users, establishing the power grid optimization scheduling model considering the direct power purchase by large consumers. This paper simulates and analyzes the power grid optimization scheduling strategy under different numbers of large consumers in IEEE 30-bus system, the results demonstrate that the model presented can achieve comprehensive optimization of power loss and wheeling price satisfying the requirements of large consumers.