Abstract
Studying the influence of the demand response and dynamic characteristics of the battery energy storage on the configuration and optimal operation of battery energy storage system (BESS) in the Wind-Photovoltaic (PV)-Energy Storage (ES) hybrid microgrid. A demand response model that is based on electricity price elasticity is established based on the time-of-use price. Take the capital-operating cost and direct economic benefit of the BESS and the loss of abandoned photovoltaic and wind power as the optimization objective, an optimal configuration method that considers the dynamic characteristics of the BESS and the maximum absorption of photovoltaic and wind power is proposed while using particle swarm optimization to solve. The results show that the configuration results considering the demand side response of the microgrid BESS can obtain better economy and reduce the storage capacity requirement, and the result shows that the efficiency of BESS relates to the load of the system, the distributed generation (DG) characteristics, and the dynamic characteristics of BESS. Meanwhile, the capacity and power of the energy storage configuration increase as the DG permeability increases due to the reverse load characteristic of the wind power.
Highlights
At present, it is difficult to integrate and dissipate large-scale distributed new energy
The effects of demand response and energy storage dynamic characteristics on the configuration and operation of microgrid system are studied for the energy storage system with distributed generation and its operation status
When researching the optimal configuration of microgrid energy storage, the optimal configuration of the battery energy storage system (BESS) that considers the demand side response shows that the energy storage optimization configuration is better than the optimization configuration without demand response, and the energy storage power and capacity requirements are lower
Summary
It is difficult to integrate and dissipate large-scale distributed new energy. Existing studies have considered the impact of price-based demand response on optimal configuration of distribution energy storage with distributed power supplies less, and have seldom considered the dynamic model of the battery. The optimal allocation of energy storage in the microgrid network while considering the demand response and the dynamic characteristics of the all-vanadium redox flow battery is a direction worthy of further study. An energy storage operation strategy that is based on maximum wind absorption is proposed while considering the dynamic characteristics of all-vanadium redox flow battery. The influence of demand side response on the operation of the microgrid energy storage system is studied taking the cost of BESS, direct economic benefit, and abandoned wind-photovoltaic loss of the all-vanadium redox flow battery energy storage system as the optimization goal.
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