Electric Power Transmission and Conductors

These flashcards cover key terms and concepts related to electric power transmission, including parameters, circuit models, conductor types, and power factors.

ABCD Parameters

The set of parameters defining the behavior of transmission lines, expressed in complex numbers and measured in units such as pu and ohms.

Voltage Regulation

The measure of the change in voltage at full load compared to no load, which can be negative.

Equivalent π Circuit

A type of transmission line model that is structurally identical to a nominal π circuit.

Surge Impedance Loading (SIL)

The power delivered by a lossless line to a load with resistance equal to the surge impedance.

Flat Voltage Profile

The condition where voltage levels remain constant along the transmission line.

Reactive Power

Power that does not perform any work, often generated or absorbed by inductors and capacitors in the system.

Stranded Conductors

Type of conductor construction designed to better withstand mechanical stresses and reduce resistance.

Corona Effect

A phenomenon where the electric field around a conductor becomes ionized, affecting the transmission line performance.

ACSR

Aluminum Conductor Steel Reinforced, a common type of power transmission conductor.

Steady-State Stability Limit

The maximum limit of a transmission line's length while maintaining steady-state conditions.

Lagging Power Factor (pf)

A condition where the demand for reactive power results in Vrnl being greater than Vrfl, leading to higher voltage regulation.

Leading Power Factor (pf)

A condition that results in Vrnl being less than Vrfl, resulting in negative voltage regulation.