Energy Storage Planning of Distribution Network Considering Carbon Emission

China's distribution network system is developing towards low carbon, and the access to volatile renewable energy is not conducive to the stable operation of the distribution network. The role of energy storage in power regulation has been emphasized, but the carbon emissions generated in energy storage systems are often ignored. When planning energy storage, increasing consideration of carbon emissions from energy storage can promote the realization of low-carbon power grids. A two-layer energy storage planning strategy for distribution networks considering carbon emissions is proposed. The upper layer uses regional typical daily load to calculate voltage-active power sensitivity to lessen candidate addresses. At the lower level, we have constructed a carbon emission model for the distribution network, and further consider the cost of energy storage to achieve capacity allocation with the goal of minimizing. We have verified the effectiveness of this method on an improved IEEE33 network, indicating that the energy storage strategy can effectively reduce carbon emissions under the premise of reducing the total cost.