The chapter will start with the basic principles of electrical engineering. The discussion will lead naturally to the transformer, found in all wind farms as well as throughout power supply systems. We then consider alternating current (AC) systems, with particular emphasis on active and reactive power and the use of phasors. Power supply systems are then considered. The chapter will close with an introduction to AC power transmission.

Chapter Contents:

• 2.1 Introduction
• 2.2 Basic principles
• 2.2.1 Electromagnetism
• 2.2.2 Magnetic circuits
• 2.2.3 Electromagnetic induction
• 2.2.4 Electricity supply
• 2.2.5 The transformer
• 2.3 AC power supply
• 2.3.1 Power in steady-state AC systems
• 2.3.2 Phasors
• 2.3.3 Power in AC systems
• 2.4 Introduction to power systems
• 2.4.1 Three-phase systems
• 2.4.2 Comparison of single- and three-phase systems
• 2.4.3 Three-phase supply
• 2.4.4 Balanced star-connected load
• 2.4.5 Balanced delta-connected load
• 2.4.6 Some usefulconventions
• 2.4.7 The complex VA product
• 2.4.8 Equivalent single-phase
• 2.4.9 The per unit system
• 2.5 Power transmission
• 2.5.1 Line parameters
• 2.5.2 Line models
• 2.5.3 Power transmission
• 2.5.4 Voltage regulation

Inspec keywords: wind power plants; power transmission

Other keywords: wind farms; reactive power; alternating current systems; AC systems; AC power transmission; phasors; power supply systems; electrical engineering

Subjects: Wind power plants