Research on Economic Evaluation Method of Energy Storage System Connected to Distribution Network

The distribution network directly provides power to power users, customer service quality and improve the economy of power system.At the same time, the large-scale integration of renewable energy with the continuous growth of distribution network load, the peak valley effect of power grid load is gradually widening; at the same time, the large-scale integration of renewable energy with strong randomness and volatility has aggravated the peak shaving problem of the power system.After the energy storage system is connected to the distribution network, it can not only reduce the investment cost, improve the voltage quality, reduce the system network loss, but also provide a way to make the system more reliable and reduce the load fluctuation.The access location, capacity and operation scheduling strategy of energy storage system will affect the reliability of distribution network, and also the access location, capacity and operation scheduling strategy of energy storage system will affect the reliability of distribution network, and also greatly affect the economy of the overall operation of the system.Therefore, this paper proposes an evaluation method of energy storage system access to distribution network and studies the collaborative planning.