An assessment of distribution system power quality. Statistical Summary Report, Volume 2

Technical Report · Wed May 01 04:00:00 EDT 1996

OSTI ID:263014

Sabin, D D

An Assessment of Distribution System Power Quality is the most extensive distribution system power quality monitoring study ever commissioned. The project, commonly referred to as the {open_quotes}DPQ Project,{close_quotes} was initiated in the fall of 1989. Its primary goal was to collect, analyze, and report on distribution system power quality data at a national level with a degree of statistical importance. The twenty-seven month monitoring effort resulted in the collection and processing of over thirty gigabytes of power quality data that now reside in the primary product of the project, the DPQ Database. Additional findings include guidelines for monitoring and modeling distribution system power quality events. Power quality is one of the most important concerns facing electric utilities today. The increasing dependence on sophisticated electronic controls and automated manufacturing within customer facilities is resulting in a requirement for higher levels of reliability and power quality than were ever previously needed. The problem is compounded by the fact that customer equipment has become more sensitive and is now interconnected in extensive networks and processes. The result is that variations in the power quality that were never a concern can now be very expensive in terms of process shut-downs and equipment malfunctions. One of the most important utility needs is an understanding of the actual power quality being provided to their customers. Often this information is not available because conventional monitoring systems and analysis techniques have focused on reliability and steady-state voltages and currents instead of the full spectrum of power quality variations that impact customer equipment. The data collection problem is compounded by the fact that there are many events that can cause a power quality problem.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (United States); Electrotek Concepts, Inc., Knoxville, TN (United States)
• Sponsoring Organization: Electric Power Research Inst., Palo Alto, CA (United States)
• OSTI ID: 263014
• Report Number(s): EPRI-TR--106294-V2
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
CONTROL
ELECTRICAL TRANSIENTS
HARMONICS
NUMERICAL DATA
OVERVOLTAGE
POWER SYSTEMS