Which instability risk increases when an electrical grid integrates a large proportion of photovoltaic systems?

💡 Explanation

When many photovoltaic systems feed into a grid, fluctuations in irradiance from passing clouds cause rapid changes in power output, which leads to voltage flicker because grid inertia can't instantaneously compensate. Therefore voltage flicker results, rather than harmonic distortion, overloading, or overheating which have other causes.

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