As the grid evolves towards a future dominated by inverters, manufacturers develop and refine the necessary stability functions.
Gamesa Electric recently published a white paper on the transition from an electricity grid maintained by large rotating turbine power plants to a grid controlled primarily by grid-forming inverters harnessing the power of wind, solar and batteries. The transition is marked by the transition from generational stability to constant variation.
June 8. pv magazine hosted a webinar discussing the key functions of the most advanced inverters, which confirmed Gamesa’s real-world test results.
Modern inverters usually use the mains voltage together with the current produced by the solar modules. However, in network formation mode, the inverter’s power converter also functions as a voltage source, meaning it can independently create an electrical network. In addition, it has the ability to change its behavior in response to changes in wider power.
This technique, in which the inverter manages the voltage and current while monitoring the grid and making adjustments to maintain the stability of the power processing system (PCS), is known as a Virtual Synchronous Machine.
Standard auxiliary functions offered by Gamesa inverters include the above-mentioned ability to control voltage regulation, power factor regulation (also known as active power), active ramp rate, fault and voltage pass-through, power oscillation damping and two fast frequency phases. response: synthetic inertia and primary frequency response (also called frequency drop).
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