1. Article: Power system.
www.circuitglobe.com/power-system/htm
2. Article: Power distribution and transmission.
www.brighthubengineering.com/power-generation-distribution
3. Article: Understanding power factor and why it’s important.
www.edistoelectric.com
4. Miller T (1982) Reactive power control in electric systems. Wiley, Hoboken
5. Article: What is power factor correction?
www.sunpower-uk.com