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3055C: Health and Risk Index Tool for Current Transformers, Potential Transformers, Surge Arresters, and Capacitors

VOLUME 1 - HEALTH AND RISK INDEX TOOL FOR SURGE ARRESTERSThis report describes the health degradation modes of surge arresters employed in transmission and distribution stations, reviews the best industry practices for inspection and testing of surge arresters and provides a methodology for determining their health and condition. Guidelines are also provided for the use of the condition assessment tool and interpretation of the results.Keywords: Surge Arrester, Lightning Arrester, Station C

Nov 29, 2011 - Dec 24, 2013

Research

5063: Implementation Roadmap for Utilities Deploying BPL Networks

Broadband over Powerline (BPL) is a technology that uses the electric utilities’ distribution networkas a transmission line for broadband access services including Internet, Voice over IP (VoIP) andVideo. These services can be provided by a telecom partner or by a non‐regulated subsidiary of theutility. BPL can also provide a communications network on the utility’s distribution network fordistribution automation applications.This report provides a Roadmap for utilities consideringimp

Sep 1, 2006

DEP

Research

50109: Leakage Current/Touch Potential Calculation And Test For Overhead Line Covered Conductors

This project investigated safety concerns over leakage current produced by contact between covered conductors and spacer cables. According to the literature, including data provided by OSHA, the threshold for slight disturbing shock is 5 mA. Therefore, this level was considered as the safety threshold for leakage current in this study.A series of tests were conducted with 3 spacer cables with rated voltage of 25kV, 15kV, and 600V. The tests were conducted under different conditions (dry, wet, po

Jun 1, 2012 - Dec 6, 2013

DEP

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

5064: Development of a Fault Alert Prototype for Distribution Transformers

The goal set for this project was to develop a working prototype and test the performance of a patented diagnostic tool intended for detection and signalling of potentially hazardous, low impedance internal faults in distribution transformers.The Fault Alert (FA) has been conceived as a high impedance device with an integrated signalling circuit. Following spontaneous activation of a fuse, the device is used to re-connect the transformer to the power supply system in order to check for the prese

May 1, 2008

DEP

Research

3236: Failure Assessment of Power Connections under Elevated Electrical Load Conditions

The work reported here comprises identification and quantification of the limits of the majorparameters determining the quality of power connectors, their preparation, effect of operatingfactors on degradation mechanisms, rate of degradation and recommended installation practices.Also included in the report is a critical review of the current state of the art of the power connectiondegradation mechanisms, description of the effectiveness of various mitigating methods used tolimit the deleterious

Jun 1, 2011 - Jun 4, 2012

OTE

Research

50126: Inspection of In-Service Concrete and Steel Power Poles

The objective of this project is to identify and describe industry “best practices” related to the inspection, assessment and maintenance of steel and concrete distribution and street lighting pole structures. These best practices were identified by conducting a thorough investigation of current practices through literature searches, an industry survey, and interviews with leading authorities on these subject matters. This report provides the findings of such research, summarizing it

Jun 6, 2014 - Dec 17, 2014

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

0141: Guidelines for the Re-Commissioning of Coal-Fired Power Plant

Electricity consumption and the building of new power plants is on the increase in many emerging markets together with the re-commissioning of plants that were previously laid-up during the recent world recession. New designs, technologies, materials and methodologies have also appeared on the horizon that can aid with the commissioning process. Many Engineering Procurement Contractors (EPCs) and plant owners thus need support and access to the latest knowledge base for the smooth and successful

May 15, 2015 - Feb 2, 2016

TGIG

Research

3302: Guide For The Preparation Of An Emergency Restoration Plan

This guide provides a recommended procedure for the safe, efficient and orderly restoration of transmission lines after a major failure. It is designed to help utilities prepare their own emergency restoration plans in relation to the existing plans and strategies of their organizations and governmental agencies. A supplementary guide for the preparation of a mutual emergency assistance agreement is included in the appendices and covers the elements to be agreed upon between the two parties alo

Apr 1, 2002

OTD

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