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5080: State-of-the-Art Review of Management of Technical and Non-Technical Losses in Distribution Systems

The objective of this project was to review and summarize practices of leading distribution utilities and to recommend effective “good utility practices” with respect to management of technical and non-technical losses. Information on the extent of losses and practices with respect to loss management was obtained by means of an extensive literature search and analysis, and a survey of distribution utilities in North America, Europe and Australia. Techniques to estimate system technic

DEP

Research

5060: Remedial Treatment of Utility Poles Using Borate Rods and In-Situ Butt Encapsulation, Phase I

This was Phase I of a two-phase project whereby the diffusion effects of various chemicals into western red cedar, Douglas fir and lodgepole pine utility pole butt segments was investigated. The intention was to eventually introduce two of these chemicals, which would diffuse together and react to form a water resistant barrier within the pole butt. The objective of this was to form such a barrier about two feet below the ground line of in-service utility poles. Borate rods would then be introdu

DEP

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

PQ

Research

5096: Update of the Surge Arrester Application Guide

DEP

Research

5053: Metal Streetlight Pole Inspection Standards

A study was conducted to develop an inspection standard and to define the skills required to perform condition assessment of thin walled metal streetlight poles. An in-depth literature search and an industry survey were carried out to review the current status of inspection standards and to recommend promising new techniques.

DEP

Research

5011: Ultrasonic Detection As A Predictive Maintenance Tool For Cable Accessories

This report describes work performed to evaluate ultrasonic detection as a tool for locating partial discharge in distribution cable accessories. The evaluation was done by conducting laboratory and field tests on a commercially available ultrasonic detector which had been modified by adding an electrically insulated contact probe. Separable insulated connectors, which consisted of elbows, bushing inserts, and junction bars, were modified to produce partial discharge to simulate typical failur

DEP

Research

5058: Distribution Power Line Inspection Training and Standards

This report provides a set of standards and relevant material for training powerline inspectors to perform visual inspection of distribution system and set priorities for the removal of component defects. The report describes functionality of various distribution components along with potential defects with severity. The information on component defects and prioritization to be collected during an inspection is detailed. Sample inspection and reporting forms are also included.

DEP

Research

50114: Distribution Transformer Secondary Overvoltage Protection

Distribution utilities would benefit from further information and clarification of the overvoltage environment at distribution transformers and related failures of transformers due to primary and secondary overvoltages. Despite available information about transformer overvoltages and current protection strategies, utilities repeatedly experience a large number of storm-related failures of distribution transformers.The objective of this work is to provide guidance for utilities on the most effect

May 18, 2012 - Mar 1, 2013

DEP

Research

50117: A Study of Data Analysis and Modeling Tools Applied to Utility Vegetation Management Programs

Use of predictive analytics to make informed decisions is gaining traction and increasing in scope for various businesses world-wide. However, the current use of predictive modeling in the utility vegetation management (UVM) industry lags significantly behind its utilization in utility companies and a majority of businesses in general. Furthermore, electric grids are being optimized to reduce wasted electric generation by making our electricity usage more reliable and efficient. There is a prono

Apr 24, 2013 - May 23, 2014

DEP

Research

50167: Design of the Distribution Grid of the Future

Since the early 2000s, when the intelligent grid and smart grid were the latest utility buzzwords in grid modernization, utility grids have evolved to accommodate stakeholder needs, and technology advances continue to enable more advanced grid capabilities. Arguably, grid modernization impacts the electric distribution system more than any other portion of the power grid. As a result, grid modernization efforts will focus on reliability, resilience, and operational efficiency while addressing ag

May 2, 2022 - Feb 28, 2023

DEP

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