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50148: Wood Pole Refurbishment Technologies – Technology Watch

Wood poles represent a significant asset for most utilities. Damage and deterioration at the groundline and poletop can result in loss of strength and failure of the pole. If the strength of the pole can be augmented, then the likelihood of failure is reduced, and the pole can remain in service for a longer period.The products available to augment the strength of in-service wood poles at and above ground-level (including near the poletop) are constantly changing. An up-to-date database of availa
Feb 20, 2018 - Nov 26, 2019

DEP

Research

3384: Rime Icing Model Validation Using WRF and Full Scale Field Icing Data

The present study deals with the validation of a rime ice accretion model using field data. The data was collected on a non-energized test line located on the top of the Long Range Mountains (LRM) on the west coast of Newfoundland. The test line was equipped with tension measuring devices and the measured ice load was estimated by correlating the change in cable tension to the accumulated ice load. Two models were used which provided the basic meteorological data for the rime ice accretion model
Jul 1, 2012 - Mar 30, 2016

OTD

Research

0362: CPF: Headgate and Spill Gate Bushing Wear Assessment

The purpose of this report is to initiate a forum for hydro owners/operators that can be used to summarize available data and experience-based assessments within this field of interest. To start this forum, a workshop was held in November 2009 for open discussion regarding bushing wear.This report summarizes many of the factors known to result in an increase in trunnion bearing friction. Additional information has been provided to help explain physical and chemical behaviour that can increase tr
Jul 11, 2012

HPE

Research

3097: Development of a Health and Risk Index Tool for a Station

Electrical utilities are under increasing pressure from regulators to justify the level and prudency of capital and maintenance expenditures on the electrical system. This report presents a methodology for assessing the overall condition of a station by combining the individual asset Health Index formulations with the evaluation of additional factors such as site selection, environmental conditions, power delivery, safety and operability. The methodology allows for the prioritization and justifi
Sep 30, 2014 - Dec 20, 2015

SE

Research

5077: Effects of Demand Side Management/Time-of-Day Rates on Customer Load and Loss Factors

This report provides an assessment of the effects of demand side management and Time-of-Day (TOD) electricity retail rates on load patterns of residential customers, and the resulting load factors and loss factors at distribution transformers, medium voltage feeders and substations. The impacts of TOD rates on residential load patterns are evaluated by decomposing the electricity consumption of a typical North American household into its components and then reconstructing the overall demand curv
Aug 1, 2009

DEP

Research

03110: Environmentally Acceptable Oil Test Program

Oct 8, 2019

Research

3038: Vibro-Acoustic Tap Changer Diagnostic Demonstration

Transformers equipped with on-load tap changers (OLTC’s) are historically less reliable than transformers which are not equipped with this component. International investigations and data from Hydro-Québec-TransÉnergie unanimously confirm that the element most often implicated in major failures of power transformers is the OLTC. Until recently there were few tools for the diagnosis of OLTC’s and these only detected a small proportion of the failure modes. The need for a
Jan 1, 2009

SE

Research

4205: Performance Measures of Asset Management Functioning and Effectiveness

This report establishes a common framework for the development of asset management Key Performance Indicators (KPIs) for electricity generation, transmission, and distribution assets. The resulting framework and list of KPIs were developed based on the ISO 5500X series of standards and guidance from the Institute of Asset Management. The included KPIs are a mix of leading, process, and lagging indicators. The KPIs also address various levels of the asset hierarchy, from the asset management syst
Feb 9, 2022 - Jul 31, 2023

AMTD

Research

50103: Lifecycle Costs of Overhead vs. Underground Installation

The principle objective of this project was to reassess and update the existing “Underground versus Overhead Distribution Systems” report. The original report was written over 20 years ago and details data and analysis techniques that incorporate all life cycle expense in the comparison of types of systems used at the time.A lot has changed since the original publication. The regulatory environment, developer and customer demand for underground facilities, environmental concerns, and
Jan 31, 2011 - Jun 30, 2013

DEP

Research

0357: Hydro Turbine/Generator Shaft Stress Analysis Methods and Limitations

This report summarizes the work performed and the ensuing results for the T092700-0357 project, in support of developing stress analysis / life assessment methods and up-rating guidance for hydroelectric turbine-generator (T-G) transmission shafts. The project involved a multi-phased approach entailing background research, analysis and methodology development, and empirical testing. The methodology and tools developed under this project are suitable for use in evaluating the remaining life of ex
Mar 1, 2009 - Jul 15, 2013
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