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English 한국어 Comprehensive Guide: Resolving Ferranti Effect and Grid Instability in Solar Power Plants What is the Ferranti Effect? The Ferranti Effect is an electrical phenomenon where the steady-state voltage at the receiving end of a long transmission line exceeds the voltage at the sending end. In the context of solar power plants, this typically occurs during periods of light load (such as early mornings, late evenings, or cloudy days) or no-load conditions at night. When utilizing long dedicated transmission lines—especially underground cables extending 30 kilometers or more—the line's inherent shunt capacitance becomes massive. This extensive capacitance generates a leading charging current. When the active power flow is minimal, this charging current travels through the line inductance, resulting in an abnormal surge in the AC bus voltage at the power plant side. Critical Impact on Electrical Equipment If the Ferranti E...