Can a hierarchical energy management strategy coordinate small-scale energy storage systems?

In this paper, a hierarchical energy management strategy, which can be applied to different scenarios with and without limited communication systems, has been proposed to coordinate a large number of small-scale energy storage systems to regulate frequency for power systems.

Is energy storage a new regulatory resource?

As a new type of flexible regulatory resource with a bidirectional regulation function [3, 4], energy storage (ES) has attracted more attention in participation in automatic generation control (AGC). It also has become essential to the future frequency regulation auxiliary service market .

Can battery energy storage system regulate system frequency?

Battery energy storage system (BESS) has been regarded as an effective technology to regulate system frequency for power systems. However, the cost and the system security of battery energy storage are the bottle necks for the battery energy storage system to be applied to practical projects for frequency regulation.

What are common frequency regulation strategies for isolated power systems?

Conventional frequency regulation strategies for isolated power systems include primary frequency regulation by synchronous units or cutting machines or load shedding based on stabilization devices .

Do energy storage stations improve frequency stability?

With the rapid expansion of new energy, there is an urgent need to enhance the frequency stability of the power system. The energy storage (ES) stations make it possible effectively. However, the frequency regulation (FR) demand distribution ignores the influence caused by various resources with different characteristics in traditional strategies.

What is the frequency stability problem of isolated power system?

In addition, the RES output is characterized by randomness, fluctuation, and uncertainty, which is a continuous source of disturbance to the system, and the power disturbance become larger as the RES penetration increases, so the frequency stability problem of isolated power system is more prominent compared to the large system , .