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Welcome to the EPRI Power Quality Online Resource Center!

This site is provided for the benefit of funders of the EPRI Power Quality Knowledge (PQK) supplemental project. For those seeking to learn more about EPRI PQ Knowledge, please contact me, Bill Howe, Program Manager of Power Quality research for EPRI.

If you are a PQK funder and have not subscribed to this resource center, register today. For more information about subscribing to this site, please contact Bill Howe.

Supplemental Project Opportunities!
PQ Knowledge Development and Transfer 

Management of power quality issues has never been an easy task, but it has grown even more difficult with deregulation, reregulation, increasingly scarce technical and strategic tools, and a conspicuous lack of unbiased resources for information, collaboration, advice, and problem solving. Moreover, with the ever-increasing use of sensitive digital and electronic equipment in today’s economy, end-use customers are not only demanding higher quality power, but also are calling upon utilities to help resolve PQ problems within customer facilities.

This supplemental project offers a number of benefits for members, including leveraging contributions by at least a 20-to-1 ratio, access to EPRI experts and industry peers, access to high-impact resources, such as documents covering a wide range of PQ topics, and access to MyPQ.epri.com, a comprehensive electronic PQ resource providing 24/7 access to more than 500 PQ case studies, PQ technical documents, PQ standards references, indexes, conference presentations, and a wealth of other resources.

Go to the Supplements Page 

PQView 4 Upgrade Project Opportunity 

PQView® Upgrade project opportunity: Introduction and discussion of a new supplemental project opportunity for broadly upgrading PQView.

PQView® was initially developed over 15 years ago in collaboration with utilities. Since that time, PQView has become a leading industry tool for managing large databases of power system monitoring information and for visualizing power quality data. It is used by many utilities as the foundation for collecting information from a variety of different monitors, managing the database of disturbance and steady state data, reporting on performance, and providing alarms and notifications for problem conditions.

This research initiative focuses on development and implementation of an enhanced PQView database, modernizing PQView’s architecture, and improving PQView’s Graphical User Interface (GUI). Work undertaken in each phase will be scaled – with input and guidance from project funders – to reflect overall funding. Phase 1 of this effort will create PQView Explorer v1 and PQWeb Explorer v1 – usable software that will comprise and deploy enhanced PQView capabilities as they are created.

Go to the Supplements Page 

Call of the Month for October 2016
Via EPRI’s PQ Knowledge (PQK) Power Quality Hotline, a PQK member inquired about a device being marketed in their service territory whose manufacturer claims that when the device is added to a customer’s existing electrical system, it would impart significant energy savings without significantly affecting the performance of end-use loads. Specifically, the member wanted to know whether the significant energy savings claimed by the manufacturer of the technology were reasonable? Such a device, which EPRI commonly refers to as a retrofit energy saving device (RESD), often incorporates capacitors as one of its internal components. Many RESD devices also include over-voltage protection (usually metal-oxide varistors [MOV] or gas tubes) or electrical chokes (inductors). However, in EPRI’s experience, capacitors are one of the most common technologies found in RESD devices due, in large part, to their ability to supply/reduce reactive current. This PQ Hotline Call of the Month, Part 2 of a three-part series, discusses the energy-saving potential of capacitors and how their behavior can be, and often are, misrepresented by some RESD vendors to imply levels of energy savings that are extraordinary.
Year-at-a-Glance Calendar for Program 1 Activities

Click Here to View the 2016 P1 Calendar

White Paper on Advanced Settings for Distributed Energy Resources

The EPRI White Paper titled Recommended Settings for Voltage and Frequency Ride-Through of Distributed Energy Resources  discusses the implications of recommended advanced settings of distributed energy resources to support power quality, reliability, and the grid.

EPRI Industrial PQ Training Videos

As a follow-up to our Industrial Power Quality training classes, we have posting these complementary training videos to help solidify the concepts for both the utility members and their customers.

Video 1: Visualizing PQ Drive Parameters for Improved Voltage Sag Ride-Through 
This video demonstrates the voltage sag susceptibility of AC drive systems and how to improve the drive’s robustness through parameter changes.

Video 2: Understanding PLC Voltage Sag Ride-through: AC and DC Powered Systems 
This video demonstrates the differences in voltage sag ride-through between an AC powered PLC system and a DC Powered PLC system.

Video 3: Power Conditioning to Enhance Control System Voltage Sag Ride-Through: The Constant-Voltage Transformer 
This video shows how a CVT can be utilized to harden the voltage sag response of an automated control system.

PQ News Builder

For EPRI PQ Knowledge funders, we have created a tool that enables you to download articles related to power quality, including high-resolution images for printing or PDF file. You can select articles on a variety of topics from our Power Quality Database and download content in HTML or RTF format, which opens in Microsoft Word.

Start Collecting PQ Articles