How to optimize UC utilization and extend battery life for hybrid energy storage system?
An adaptive energy management strategy based on a model predictive control with real-time tuning weight strategy is proposed to optimize UC utilization and extend battery lifetime for hybrid energy storage system. The AARIMA with variable differencing order and lags of the model is proposed to predict the velocity and gradient.
Can adaptive VSG control improve the dynamic characteristic of active power?
Since the parameters in the VSG control can be varied, it can be turned to be an alternative to obtain an optimal response for the overall performance of frequency when the operating conditions change. In this paper, the adaptive VSG control is proposed to improve the dynamic characteristic of active power at a certain capacity.
Can adaptive VSG control improve frequency stability?
Finally, the proposed adaptive VSG control is verified in the modified IEEE 4-machine 2-area system and an actual power grid example. The simulation results show the effectiveness and great potential of this model in improving frequency stability. 1.
Why is adaptive VSG control more flexible than pi control?
Compared with PI control and VSG control, the adaptive VSG control is more flexible since its output power responds quickly and accurately according to its reference without large overshoot and oscillation. To maintain SOC in a reasonable range, the droop coefficient of adaptive VSG control gives negative feedback as the SOC changes.
Does adaptive VSG control strategy improve small-signal stability?
In addition, to investigate the effect of adaptive VSG control strategy on improving the small-signal stability of a two-area system integrated with BESS, the Prony analysis was performed on the modes of rotor angle to identify the oscillation frequency, damping, and eigenvalues of the system modes directly from the time-domain response data.
Does adaptive VSG control reduce frequency overshoot?
Among three conditions, the virtual inertia provided by adaptive VSG control strategy can reduce frequency overshoot to support the system and effectively stabilize the output frequency. The rotor angle characteristics also demonstrate the supportability of adaptive VSG control.
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