What are energy storage systems (ESS)?

Energy storage systems (ESS) are widely applied in power grids to absorb renewable energy sources, shift demands, and balance short-term electricity.

Can a battery model be used to optimize ESS dispatch?

However, the traditional dispatch methods ignore the battery's dynamic power limit and degradation characteristics, which leads to the mismatched power between ESS dispatch commands and the actual optimal responses, and shortened battery lifetime. This paper proposes a novel battery model to achieve an optimized dispatch of ESS.

Do optimized dispatch strategies increase power generation?

Simulation results demonstrate that optimized dispatch strategies increase annual power generation by 1.43 %–4.42 % while enhancing annual utilization hours of ±800 kV ultra-high voltage direct current transmission lines from 4,699 to 5,095 h.

How to consider the daily operating capacity balance of energy storage?

In order to consider the daily operating capacity balance of energy storage in the intra-day stage, the capacity imbalance penalty is added to the intra-day rolling optimization objective function, so that the energy storage capacity tries to track the results of the day-ahead optimization, achieving the long-term development of energy storage.

What is a medium-long-term multi-objective optimization dispatching model with short-term power balance?

This study proposes a medium-long-term multi-objective optimization dispatching model coupled with short-term power balance. The proposed model employs a dispatching period of one-year, with weekly medium-long-term and hourly short-term temporal resolutions.

How often is the distribution network optimized and dispatched?

The distribution network is optimized and dispatched every 15 min, with adjustments made to the day-ahead results, allowing the distribution network operation to adapt to the fluctuations of renewable energy.