Course Description

In alternating current systems, both voltage and current vary sinusoidally with time. When the load is purely resistive, voltage and current are in phase, and all supplied power performs useful work. However, real-world systems contain inductance and capacitance. Inductors, such as motors and transformers, cause current to lag voltage. Capacitors cause current to lead voltage. This phase displacement creates two components of power: Active power, which performs mechanical work, heating, lighting. Reactive power, which oscillates between source and load, sustaining electric and magnetic fields. Reactive power does not produce mechanical output, but without it, electromagnetic devices cannot operate. Therefore, it is fundamental to system functionality.

What you'll learn in this course?

• Explain the concept of reactive power in AC power systems.

• Differentiate between active, reactive, and apparent power.

• Understand the relationship between reactive power and voltage stability.

• Identify sources and sinks of reactive power in power systems.

• Analyze voltage regulation in transmission and distribution networks.

• Describe methods and equipment used for reactive power compensation.

• Evaluate the impact of poor power factor on system performance.

Prerequisites

• Basic understanding of AC circuits, voltage, current, and electrical power

• Familiarity with power-system transmission and distribution concepts is helpful