Photovoltaic energy storage system frequency regulation solution

Is a frequency modulation control strategy suitable for PV-energy storage systems?

In response to the shortcomings of the classic VSG control strategy mentioned above, this paper proposes a frequency modulation control strategy with additional system active power constraints for PV-energy storage systems (hereinafter referred to as active power constraint control strategy).

Can VSG control improve frequency response characteristics of photovoltaic and energy storage systems?

This work was supported by the New Power System Major Science and Technology Research Project of State Grid Hebei Electric Power Company Ltd. (kj2022-058) (Research on control strategy for improving the frequency response characteristics of photovoltaic and energy storage systems based on VSG control).

What is a frequency modulation control strategy for VSG systems?

A frequency modulation control strategy for VSG systems with additional active power constraints is proposed by overlaying the active power changes of photovoltaic and energy storage systems through appropriate functional relationships into the control loop of synchronous generators.

How fast is frequency active support for PV-energy storage VSG system?

On average, the frequency fluctuation is suppressed by about 0.15 Hz compared to typical VSG control, and the average adjustment time is also about 2 s faster. Table 3. Response time of frequency active support capability for PV-energy storage VSG system. 5. Conclusions

What is frequency regulation in power system?

Frequency regulation in power system In power systems, frequency is the continuously changing variable which is influenced by the power generation and demand. A generation deficit results in frequency reduction while surplus generation causes an increase in the frequency.

Is energy storage a viable solution?

Reference (Pournazarian et al., 2022, Wang et al., 2016) proposes a feasible solution that leverages the benefits of energy storage, such as rapid response and high flexibility (Li et al., 2018b), by combining it with primary frequency regulation and advanced converter control technology to enhance support for the power grid.