Inrush currents associated with motor starting and transformer energizing can cause interaction problems with other loads in a facility or on the power system. These inrush currents...
All utilities maintain statistics on the reliability of the electricity supply to consumers. In recent years, utilities have begun to track other power quality characteristics...
For several years now, members of IEEE's P1547 working group have been developing a draft document to provide engineers with uniform guidelines pertaining to the performance, ...
With over 100 suppliers of commodity UPS systems, it wasn't possible to test every one. Instead, we focused on testing a variety of units that encompassed different designs, prices...
Over the years, engineers have developed many definitions for measuring power with distorted voltages and currents. However, none of these definitions successfully characterize...
Power quality issues involve all aspects of power system operation, from steady-state voltage regulation to the control of high-frequency transients caused by lightning or switching...
As with many other aspects of the power industry, deregulation and restructuring are changing how utilities and customers approach power quality monitoring. Traditionalists view...