Energilagring VSG nätansluten frekvensmodulering

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Does VSG affect grid stabilisation?

Owing to the importance of VSG in the modern power grid, this study provides a comprehensive review on the control and coordination of VSG toward grid stabilisation in terms of frequency, voltage and oscillation damping during inertia response. A review on the type of energy storage system used for VSG and their benefits is also presented.

Why is VSG important in a power grid?

The penetration of power electronic-based power generation in power grid reduces the total inertia, and thus increases the risk of frequency instability when disturbance occurs in the grid. VSG produces virtual inertia by injecting appropriate active power value to the grid when needed.

What is virtual synchronous generator (VSG)?

Virtual synchronous generator (VSG) is an important concept toward frequency stabilisation of the modern power system. The penetration of power electronic-based power generation in power grid reduces the total inertia, and thus increases the risk of frequency instability when disturbance occurs in the grid.

How does VSG produce virtual inertia?

VSG produces virtual inertia by injecting appropriate active power value to the grid when needed. This virtual inertia can stabilise the grid frequency in case of a power imbalance between generation and loads or any disturbances that affected frequency stability.

How effective is VSG in supplying synthetic inertia?

Meanwhile, the application of VSG with energy capacitor storage (ECS) system helps in smoothening the line power fluctuation caused by variable wind speed permanent-magnet synchronous generators. Hence, the type of energy storage used will play a significant role in the effectiveness of VSG in supplying synthetic inertia in the grid.

Which is the best solution for VSG energy source?

ECS is among the best solution for VSG energy source. It has a higher charge and discharge rates compared with BES. Owing to this feature alone, ECS will have higher-energy exchange at a smaller-sized capacity. Since VSG involves in a lot of high-frequency power fluctuation, ECS is the best solution to emulate inertia of a VSG.