Energy storage self-balancing capability

How effective is energy storage control strategy?

The precondition for the effectiveness of the control strategy is to ensure that the energy storage is equipped with sufficient capacity to avoid the inability to track the target power. However, a larger energy storage capacity is not always better, considering economic factors.

How can energy storage optimization optimize energy storage?

In summary, the proposed energy storage optimization configuration and scheduling strategy can ensure adequate inertia support and reserved power across multiple typical scenarios. When the output power of renewable energy is high, the minimum rotational kinetic energy can be increased by about 30%, and the reserved power can be increased by 15%.

How does the operational state of the energy storage system affect performance?

The operational states of the energy storage system affect the life loss of the energy storage equipment, the overall economic performance of the system, and the long-term smoothing effect of the wind power. Fig. 6 (d) compares the changes of the hybrid energy storage SOC under the three MPC control methods.

What is the optimal energy storage capacity?

Additionally, when the inertia and reserved power constraints are not considered, the optimized energy storage configuration capacity remains consistently at 200kWh under the original five typical scenarios, with rated power capacities of 67 kW, 105 kW, 109 kW, 104 kW, and 99 kW, respectively.

What is the maximum rated power of the configured energy storage?

The maximum rated power of the configured energy storage is 266 kW, accounting for approximately 23% of the total installed capacity of renewable energy. The maximum rated capacity of the configured energy storage is 399kWh. The corresponding scheduling scheme, energy storage operating state and inertia are illustrated in Fig. 7 a–j.

How does energy storage work?

During the period from t = 16 h to t = 24 h, the power of renewable energy decreases, and the grid-forming energy storage increases power to meet the load demand. Throughout the entire optimization cycle, the SOC of the energy storage device can be maintained at over 20%.