What are EC and Dr capacity configuration strategies for m-GES plants?

This study introduces innovative capacity configuration strategies for M-GES plants, namely Equal Capacity Configuration (EC) and Double-Rate Capacity Configuration (DR), tailored to optimize energy storage efficiency and stability.

What is a suitable capacity configuration strategy?

Generally, a suitable capacity configuration strategy should have a small power granularity, a small number of units, and a small maximum unit capacity. EC configuration is the simplest unit capacity configuration strategy, i.e., all units have the same capacity. The power granularity of EC configuration is the magnitude of unit capacity.

What is the capacity configuration strategy of M-GES power plant?

The capacity configuration strategy of the M-GES power plant proposed in this paper includes two types: EC configuration (EC) and DR capacity configuration (DR).

What is unit scheduling strategy under equal capacity configuration?

Unit scheduling strategy under equal capacity configuration The flowchart for calculating the control command of the EC configuration strategy uses the scalar system, i.e., the unit capacity is assumed to be 1 unit (while the power granularity is 1 unit), as shown in Fig. 5.

What is modular gravity energy storage (m-GES)?

The principle of Modular Gravity Energy Storage (M-GES) involves using electrical energy to lift heavy objects (such as concrete blocks) to a higher position, storing it as potential energy. When needed, the heavy objects are released, descending and converting the potential energy back into electrical energy through energy conversion devices.

What is a modular gravity energy storage plant?

The M-GES power plant is characterized by discrete weights, which gives excellent flexibility in weight preparation and control while greatly increasing the power control complexity of the plant, as shown in Fig. 3. Fig. 3. Typical equipment composition of a modular gravity energy storage plant.