IEEE Power Engineering Society: http://www.ieee.org/power/power.html/
IEEE Industry Applications Society: http://www.ewh.ieee.org/soc/ias/
U.S. Army Corps. of Engineers Hydroelectric Plant Designs http://www.usace.army.mil/inet/usace-docs/eng-manuals/em1110-2-3006/entire.pdf
Power Quality Magazine: http://www.powerquality.com/
Electrotek Concepts: http://www.electrotek.com/
University of Idaho Power Applications Research Group: http://www.ee.uidaho.edu/ee/power/parg/ Visit the links at the bottom of the page