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50115: Amorphous Core Distribution Transformers

Distribution Transformers (DTs) are one of the most important and expensive equipment in distribution systems. The large number of DTs accounts for a significant portion of the total energy losses in distribution systems, which are primarily the result of the continuous magnetizing and demagnetizing of the core material at line frequency.Previous studies indicated that the losses on DTs can be largely reduced by more efficient core material. Amorphous Core Distribution Transformers (AMTs), adopt

Mar 13, 2013 - Dec 3, 2014

DEP

Research

5143B-03: Induction Motor Starting Case Study

ABSTRACT: Induction motor starting is one of the most common causes of voltage variations. An induction motor will draw several times its full load current during starting. This lagging current creates a voltage drop across the impedances of the system. If the started motor is large enough relative to the system strength (short-circuit capacity), these voltage drops can produce severe voltage sags on the system. The motor starting current magnitude generally decreases relatively slowly dependin

Mar 1, 2010

Research

0244: CPF: Translation of Methodology for Analysing and Managing Floating Debris at Dams and Reservoirs

A methodology has been developed that can be used to analyse and categorise dam facilities in terms of their vulnerability to floating debris and provide guidance on prioritisation and choice of remedial action.The assessments can be performed by an individual with good local knowledge and understanding of the problem of floating debris or, alternatively, with the help of various in-depth analyses, such as spatial analysis.To prioritize the need for mitigation measures, the vulnerability of upst

Jan 15, 2019 - Apr 29, 2019

DSIG

Research

30111: SF6 Leakage Management

This report intends to provide sulphur hexafluoride (SF6) users with guidance related to mitigating, minimizing, and reducing SF6 emissions. Prepared with electrical utility operators and SF6 equipment manufacturers in mind, this document should be useful to all parties involved with other applications that employ SF6.Included in this report is a brief introduction to common aspects of the use, alternatives, handling, and safety of SF6. The introduction is followed by a survey that was distribut

Apr 28, 2016 - Sep 7, 2017

Research

0337: CPF: Hydro Plant Debris Management

To increase hydroelectric plant maintenance managers' awareness of current technologies and equipment related to the management of forebay debris, a Technology Review (TR) of the state‐of-the‐art in equipment was undertaken, under the auspices of the Hydraulic Plant Life Interest Group. This report has two main focuses: trashracks and trash removal tools (principally trashrack raking equipment). Several sources of information were used, including solicited information from hydro industry service

Apr 30, 2006

HPE

Research

3218: Refurbish or Replace Decision Model

Due to the aging infrastructure of the power distribution grid, utilities are required to invest significantly in their assets to maintain the ability to provide uninterrupted power to their customers. Prior to committing their funding, utilities need to understand the financial impact of refurbishing or replacing an aging asset with regards to the total cost of ownership by determining the net present value of each option over a specific evaluation period. The cost of ownership is defined by

Jul 1, 2009

OTE

Research

2024: OTE Project Listing & Matrix

This document summarizes all projects completed within the Overhead Transmission Equipment group. The document includes topics and focus areas of the group with the corresponding project number of completed projects with the topics. To access the projects listed, members can search for the project number(s) on the CEATI member portal and access all relevant project documents, tools and presentations.

Jun 1, 2024 - Jan 1, 2025

OTE

Research

3210B: Ultrasonic Assessment of the Condition of Tower Legs

3210 AThis Progress Report covers work on Phase 1 “Feasibility study – Lab Testing andDevelopment” scheduled for this period. The legs of steel transmission towers start to corrodeonce they have been installed and buried. A reliable method of assessing the condition of theburied structures is required. The idea of ultrasonic determination of the buried structurescondition is based on the excitation of traveling acoustic waves in the leg. Equipment forinspection consists of puls

Sep 1, 2008

OTE

Research

0120: Guidelines for Inspection, Monitoring, Repair and Maintenance of HRSGs - Based on Review of Worldwide Plant and Research Experience

This report reviews worldwide plant and research experience on HRSGs and presents recommendations and guidelines for inspection, monitoring, repair and maintenance. The information has been obtained from the plant experience of ETD experts, personal contacts in the industry and in-house reports, and recently published literature. The influence of HRSG type (horizontal or vertical gas flow), materials of construction and weldment issues, mode of operation, and the damage mechanisms ar

Jan 1, 2004 - Dec 31, 2005

TGIG

Research

5138: Practical Guidelines for Evaluating the Impact of Transients on Utility Customers

The objective of this project was to develop an application guide that provides a review of the powersystem transient phenomena that can negatively affect utility and customer systems. The guideincludes relevant standards‐related information and representative waveforms for many of thecommon transients that occur on the electric power system, including capacitor bank switching,feeder and transformer energizing, fuse operation, faults, arrester operation, induction motorstarting, lightning, and f

Oct 1, 2007

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