During which scenario would you expect 'Ferranti Voltage Rise Effect'?

Prepare for the NERC Electric Power Sector Reform (EPSR) Exam. Study with interactive flashcards, detailed multiple-choice questions, hints, and explanations. Boost your confidence and get ready to excel in your exam!

The Ferranti Voltage Rise Effect occurs when a long transmission line is open-ended or lightly loaded. In this scenario, the line's capacitance can become significant compared to its load. As the line is energized and power flows towards the load, the capacitive reactance causes the voltage at the receiving end of the line to increase compared to the sending end. This phenomenon is more pronounced in long transmission lines due to their larger capacitance.

In cases of short lines or heavily loaded lines, there tends to be a voltage drop rather than a rise because the load draws power, leading to resistive losses that outweigh capacitive effects. Likewise, at the point of transformer connection, voltage characteristics are influenced by the transformer's operations and connection type rather than the Ferranti effect, which is specific to transmission lines. Therefore, a long open-ended transmission line is the most conducive environment for experiencing the Ferranti Voltage Rise Effect.

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