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5140: Uniform Practices in Reporting Momentary Outages and Their Relationship with Power Quality

The reporting of momentary interruptions and voltage sags has been examined to identify a single metric that is suitable for communicating the momentary interruption and voltage sag performance of the power delivery system in relation to the customer expectations of process equipment performance with large groups of stakeholders. The existing SARFI70 index with a small modification to the duration definition has been proposed, because it will result in a value that is in line with customer exper

PQ

Research

5126: Customer Power Factor Correction Capacitor Application Guide

The objective of this project was to develop an application guide that provides design and application procedures for power factor correction within customer facilities. The guide presents technical and economic issues associated with power factor correction and illustrates some frequently encountered power quality and operational problems. The application of power factor correction capacitors increases system capacity and reduces system losses. Generally for industrial customers, power facto

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Research

5183: A Practical Guide for Mitigating Harmonics in Electrical Distribution Systems

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Research

5103: Canadian Power Quality Survey 2000 (DPQ2000)

This report explains the methodology and gives the results of the Canadian Distribution Power Quality Survey held in 1999 and 2000 across Canada. The overall scope of this project was to define what baseline product the Canadian electrical utilities will be able to guaranty to their Low-Voltage (LV) and Medium-Voltage (MV) customers.

PQ

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5143B-08: Ferroresonance Case Study

Ferroresonance is a term generally applied to a wide variety of interactions between capacitors and iron-core inductors that result in unusual voltages and/or currents. In linear circuits, resonance occurs when the capacitive reactance equals the inductive reactance at the frequency at which the circuit is excited. Iron-core inductors have a nonlinear characteristic and therefore a range of inductance values. This relationship may lead to a number of operating conditions where the inductive reac

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Research

5179A: Voltage Induction on Pipelines Caused by Power Line Harmonic Currents - Phase I

Voltage induction on pipelines caused by AC currents in adjacent power lines is always a concern for pipeline and power line companies. In recent years, the AC currents have become increasingly distorted due to the proliferation of power electronics based devices. Based on the Fourier theory, the AC currents can also be said to contain harmonic currents. Since the severity of voltage induction is proportional to the frequency of the AC current, one can expect that the harmonic currents may cause

May 1, 2018 - Feb 27, 2019

DEP

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Research

5120: Review of Flicker Measurement of the CEA DPQ Survey 2000

This report is a follow-up on the CEA Distribution Power Quality Survey 2000. Its primary focus was to review voltage flicker measurements on customer sites where the originally recorded flicker levels exceeded the normal compatibility levels, yet where there were no recorded complaints from the end users of electrical supply. The report documents the re-easured voltage flicker data on a number of sites with previously reported high flicker values, together with comprehensive analysis and assess

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Research

5142: Harmonic Growth Rate of Residential Feeders in Canada

According to Dr. Alexander Emanuel, the harmonic level on the power system keeps growing every year in the USA, up to 0.35% of the fundamental. Such growth may also occur in Canada; this growth would compromise the quality of the power supply with several adverse impacts on equipment forcing utilities to install expensive mitigating measures on the power system. To assess the risk of these mitigation costs, Canadian utilities revisited a number of sites originally covered by the DPQ2000 survey

PQ

Research

5161: Understanding Distribution System Losses Caused by Harmonic Emissions and Their True Economic Impact on Distribution System Operation

This report presents an investigation on the impact of harmonics on distribution systems, with a focus on three key components - transformers, cables and capacitors. The impact on these components can manifest as loss of energy, loss of capacity, loss of life, loss of revenue and so on. Depending on the equipment type, some losses can be more significant than others. This work has identified the main factors that make each type of equipment vulnerable to harmonics and has established methods to

Mar 23, 2012 - Oct 28, 2013

PQ

Research

D711A: Power Quality National Survey

The survey objective was to provide a benchmark of power quality at the customer service entrance panel (i.e., the power quality that utility customers experience). A few primary metered sites were also monitored, providing an indication of power quality at the utility distribution voltage level (i.e., the power quality that utilities supply).Twenty-two utilities from across Canada participated in the survey using commercially available power quality monitors. Innovative software was developed t

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