Main network energy storage equipment

What are energy storage systems?

Energy storage systems (ESSs) in the electric power networks can be provided by a variety of techniques and technologies.

How are energy storage systems categorized?

In general, storage systems are categorized based on two factors namely storage medium (type of the energy stored) and storage (discharge) duration. In the first type classification, the ESSs are divided to mechanical, chemical, and electrical storage systems based on the form in which the energy is stored.

Are energy storage systems a smart grid?

In the past decade, energy storage systems (ESSs) as one of the structural units of the smart grids have experienced a rapid growth in both technical maturity and cost effectiveness. These devices propose diverse applications in the power systems especially in distribution networks.

What is electrical energy storage (EES)?

Electrical Energy Storage, EES, is one of the key technologies in the areas covered by the IEC. EES techniques have shown unique capabilities in coping with some critical characteristics of electricity, for example hourly variations in demand and price.

Which storage technologies are suitable for employment in distribution networks?

In contrast, with the advancement of the high power and high energy density, high efficiency, environmental friendly and grid scale batteries, these devices are becoming one of the most potential storage technologies suitable for employment in the distribution networks.

Which type of energy storage is suitable for long-term energy management?

The pumped hydro, compressed air energy storage, and large-scale batteries belong to this category. Considering the long discharge duration and energy capacity, this type of storage is fitted to the long-term energy management applications such as energy arbitrage, congestion management, expansion deferral, and long term voltage control.