Multi-station integration scenario planning and economic benefit analysis based on dynamic adjustment of capacity-load ratio

In order to promote the transformation of energy types and the optimal allocation of power resources, the State Grid is actively exploring the new power development model of “multi-station integration”, in which the joint planning of substations and energy storage stations is the key content of the construction. This paper first researches the key indicators that affect the substation capacity in power grid planning and proposes the amendment of the calculation formula for the capacity-load ratio in the multi-station integrated planning. Subsequently, the multiple operation modes of energy storage stations under the multi-station integration scenario are studied, and a multi-station integration joint planning model considering economic costs is established. The conclusion of the calculation example proves that the dynamic modification of the capacity-to-load ratio index in the multi-station integration scenario can delay the addition of substations, reduce the cost of grid planning and construction while increasing the operating benefits of base stations, and improving the safety and economy of the regional power grid.