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5125: Factors Affecting High Grade Power Costs

The traditional electricity structure provides a baseline (or normal) level of power quality that isprovided to all customers using “good utility practice” at the regulated rate. In the competitiveelectricity market, the utility may consider offering special levels of power quality to particularindividual customers with critical power needs and sensitive equipment in return for a pricepremium. While customer‐side solutions are available, the customer may prefer a utility‐sidesolution

Dec 1, 2005

Research

5178: Enhancing Connectivity of DGs by Control Coordination of Smart Inverters

This Report describes in detail the concepts of hosting capacity for PV systems and its influencing factors. A review of different technologies is presented for increasing the hosting capacity of distribution networks used worldwide for accommodating DGs, with the focus being on PV solar systems. These technologies include conventional equipment such as OLTC, voltage regulators and switched capacitors; energy storage systems; electric vehicle charging systems; and smart inverters.The relative ef

May 7, 2018 - Apr 30, 2020

DEP

Research

5171: Analysis of Parallel and Series Resonance on the Electrical Distribution System

This project provides an extensive report on the causes of harmonic resonances and their potential adverse impacts based on actual instances worldwide. The different techniques for prediction and analysis of both parallel and series resonances are illustrated. Furthermore, the methods of validation of results of such techniques with field data are described. Techniques are suggested for utilizing the power quality data for predicting the onset of potentially dangerous harmonic resonances in the

May 28, 2015 - May 6, 2016

Research

5175: Conducting Distribution and Customer Facility Ferroresonance Studies

This report presents a detailed overview of the ferroresonance phenomenon. Actual incidents of ferroresonance in distribution systems operating below 25 kV and also up to 50 kV are described, together with the adverse impacts experienced and the remedial measures employed.The modeling of ferroresonance phenomenon and study techniques for developing adequate mitigative measures are also presented.Keywords:Ferroresonance, Transformers, Distribution systems, Overvoltages, Overcurrents, Potential tr

Jul 16, 2017 - May 4, 2018

Research

5177: Analytical Methods for Aggregating, Characterizing, and Assessing Data from Distribution Systems

Data analytics is widely used to study distribution system data and extract from it valuable knowledge. This report investigates the use of data analytics techniques in distribution utility applications.The use of descriptive, diagnostic, and predictive analytics techniques in distribution system applications are demonstrated, and examples of their use on real distribution system data provided by several North American utilities are also presented. The target outcomes identified by the utilities

May 31, 2018 - May 1, 2020

Research

5155: A Guide to Successful Accommodation of Mass Penetration of High Inrush Current Devices on Distribution Networks

Residential and/or small commercial devices that commonly demand high-inrush-power during starting are not new to electric utilities. What is new however is the mass deployment of such devices on the distribution grid due to government incentives and increased desire by the public for energy efficiency. These devices include but are not limited to the following: air conditioners, heat pumps, various types of commercial compressors, power tools, and on-demand water heaters. Air conditioners have

Mar 9, 2011 - May 15, 2013

DEP

Research

5170: Guide for Coordination of Electrical Distribution Feeders and Gas Pipelines

The primary objective of this study is to prepare appropriate criteria and recommendations to consider for the safe coordination between pipelines and electrical distribution utilities sharing the same corridors. Industry trends have resulted in an increasing number of shared right-of-ways (ROWs) between gas and electric utilities. The increased focus on shared ROWs is the result of several factors including permitting, topography, land access, and urban sprawl. AC interference on pipelines from

Jun 19, 2015 - Jan 16, 2017

Research

5131B: Stray Voltages in Higher Load Density Environments-Causes, Effects, Measurement and Mitigation Techniques

This document describes procedures and equipment suitable for conducting consistent and repeatable evaluations of publicly and privately accessible contact voltage situations in higher load density urban environments. Although useful measurement protocols and procedures exist for some situations, such as measurements in animal contact areas, there are inconsistencies and differences in the procedures used to conduct assessments of contact voltage across some of the other areas of interest. To th

May 5, 2006 - Mar 5, 2006

Research

5143D: Enhancements to the web-based power quality database

Power quality problems include all of the issues that arise from the incompatibility between a utility’s power and the customer’s energy-consuming equipment that result in impaired operation. These include transients, voltage sags and swells, momentary interruptions, harmonics, and short- and long-term voltage variations and outages. Power conditioning for specific power quality problems requires knowledge of the type of problem that is occurring. Power conditioning equipment can be

Apr 19, 2010

Research

50124: Gap Analysis of Research Conducted in DG Integration

Distributed generation (DG) presents a number of challenges to distribution system planning and operations because the dispersed connection of generation sources to the distribution system disrupt the traditional paradigm in which the substation is the sole source of power and short-circuit capacity. Furthermore, much of the DG presently being installed is renewable, and thus inherently variable, adding further complexities to distribution system integration. At the same time, DG, in particular

Jul 7, 2014 - Apr 15, 2015

DEP

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