Study on Optimization of Hybrid Energy Storage Configuration

The randomness and volatility of the renewable energy bring instability to the operation of distribution network. A higher standard of planning and scheduling of the distribution network is called for along with the increasing load of the distribution network and the increasing spread of the peak and valley. In the distribution network, equipped with energy storage can reduce the impact of uncertainty, improve the flexibility of distribution network operation. The use of hybrid energy storage is more suitable for frequent occurrence of power load fluctuations in the distribution network. This paper focuses on the configuration of hybrid energy storage, and proposes a hybrid energy storage optimization method for calculating the parameter of power storage and energy storage in the distribution network. It can reduce the capacity of the transformers in the distribution network. At the same time, this paper also proposes a Wave shaping coefficient of the indicators used to optimize the cost of hybrid energy storage configuration and improve the economic benefit reasonably. The proposed allocation method is validated with numerical simulation results.