Solution to the battery degradation problem in energy storage power stations

Do power system operations need to consider degradation characteristics of battery energy storage?

Abstract: Power system operations need to consider the degradation characteristics of battery energy storage (BES) in the modeling and optimization. Existing methods commonly bridge the mapping from charging and/or discharging behaviors to the BES degradation cost with fixed parameters.

Can battery energy storage degradation cost be integrated into the BES scheduling problem?

This study proposes a novel predictive energy management strategy to integrate the battery energy storage (BES) degradation cost into the BES scheduling problem and address the uncertainty in the energy management problem. As the first step, the factors affecting the BES calendar aging and cycle aging are linearly modelled.

Why is battery degradation important?

However, challenge related to battery degradation and the unpredictable lifetime hinder further advancement and widespread adoption. Battery degradation and longevity directly affect a system's reliability, efficiency, and cost-effectiveness, ensuring stable energy supply and minimizing replacement needs.

What is the simplest battery degradation model?

The first and the simplest battery degradation model is the energy-throughput model. This model is motivated by modeling battery capacity degradation as a proportional relationship to energy throughput—the amount of energy cumulatively charged and discharged from the battery.

How much error can a battery energy storage model reduce?

Case studies show the proposed model can limit the error within three percent in the lifespan. Power system operations need to consider the degradation characteristics of battery energy storage (BES) in the modeling and optimization.

How do we model degradation in power system operation?

Monetizing the value of battery capacity loss is another crucial aspect for modeling degradation in power system operation: we must quantify the cost to the battery owner if the battery lost one unit of remaining capacity.