Industrial Power Factor Analysis Guidebook.

Technical Report · Wed Mar 01 04:00:00 EST 1995

DOI:https://doi.org/10.2172/654078· OSTI ID:654078

Electrotek, Concepts

Power factor is a way of measuring the percentage of reactive power in an electrical system. Reactive power represents wasted energy--electricity that does no useful work because the electrical current is out of phase with the voltage. Reactive power is used by inductive loads (such as, motors, transformers, fluorescent lights, arc welders and induction furnaces) to sustain their magnetic fields. Electric systems with many motors exhibit low power factors, increased conductor and transformer losses, and lower voltages. Utilities must supply both active and reactive power and compensate for these losses. Power factor can be improved by the addition of shunt capacitors. Capacitors act in opposition to inductive loads, thereby minimizing the reactive power required to serve them. In raising the power factor, shunt capacitors release energy to the system, reduce system losses, and ultimately decrease power costs. Improving system power factor can reduce reactive and active power losses for both industry and utilities through the addition of shunt capacitors. This Guide Book gives electric utility technical staff, industrial end-users, consultants and BPA employees a step-by-step method for evaluating the cost effectiveness of installing power factor correction capacitors in an industrial plant.

• Research Organization: Electrotek Concepts, Inc., Chattanooga, TN (United States)
• Sponsoring Organization: United States. Bonneville Power Administration.
• OSTI ID: 654078
• Report Number(s): DOE/BP-42892-1; ON: DE98005164
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CAPACITORS
Electric power - Industrial applications
Factor analysis
LOAD ANALYSIS
LOAD MANAGEMENT
POWER FACTOR
POWER LOSSES
VAR CONTROL SYSTEMS