How to regulate voltage and frequency in energy storage system

Can battery energy storage system capacity optimization improve power system frequency regulation?

This article proposes a novel capacity optimization configuration method of battery energy storage system (BESS) considering the rate characteristics in primary frequency regulation to improve the power system frequency regulation capability and performance.

How can auxiliary power grid frequency regulation be improved?

Considering the rate characteristics of the BESS and combining its advantages of fast action and flexible adjustment methods, applying it to the auxiliary power grid frequency regulation can effectively improve the ability for power grid frequency regulation.

What is grid frequency regulation?

Grid frequency regulation is to balance power fluctuations from tens of seconds to several minutes, and this action process is obvious characteristics for short duration time, high power demand, and low energy demand.

What is a battery energy storage system (BESS)?

These battery banks are known as the Battery Energy Storage Systems (BESS). BESS are also considered a better choice for providing a fast response to the power imbalance in the modern power grid by supporting the system frequency regulations (Meng et al., 2020).

How to regulate frequency in MG?

Different control methodologies have been implemented for the BESS controller to regulate the frequency in MG. Mathematical models are needed for each control block to analyze and design the BESS controller, such as the conventional Proportional and Integral (PI) controller.

Can Bess control the frequency fluctuations associated with different voltage levels?

The results indicate that the frequency constraints are established at ±0.2 Hz. However, the third step of this research demonstrated how the BESS can control the frequency fluctuations associated with different voltage levels such as HV, MV, and LV levels with the same BESS active power rating.