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3708: Performance Review of Gradient Control Mats

Utility workers utilize a variety of gradient control mats to reduce touch potentials when operating switches or conducting maintenance work at stations or on lines. Unprotected touch voltages can be extremely hazardous, reaching near full phase to ground potential in some situations. However, the performance of many of these mats is unproven and is dependent upon local soil conditions. In particular, poor contact from conductive meshes to the underlying soil does little to reduce potential diff

Feb 15, 2014 - Dec 28, 2016

Research

0380: Hydro Generator - General Maintenance and Inspection Guide

This Inspection and Maintenance Guide outlines the activities that constitute a good maintenance philosophy for hydrogenerators in order to maximize unit availability and reliability. It is concerned primarily with the generator itself and is restricted to those components on the generator side of the main shaft coupling. As such, detailed emphasis is placed on the electrical elements and their inspection and maintenance however the major generator mechanical components are also included. Major

Apr 18, 2012 - Nov 5, 2013

HPE

Research

3278: CPF: Condition Assessment of Overhead Transmission Line Steel Lattice Towers

The condition of steel members in overhead transmission line (OHTL) towers is critical to the structural integrity of the system. Rust can develop in local areas and spread across the member, compromising its strength and establishing weak points. Failure of members due to rust damage is a serious risk and can lead to the structure failing, causing power outages and significant knock-on costs.The objective of this report is to provide the methods and rationale that were used to inspect and asses

Mar 7, 2018 - Feb 27, 2019

OTE

Research

0555: Carbon Free Fuels for the Future 2030 - 2035

The objective of this project is to provide a technology assessment of future low carbon fuel options. It should also explain at a high level any major plant modifications that would be required to burn these fuels in existing plants or those that would be built in the next 10 years. Consideration must also be given to the economics of transporting either the fuel to the generator or the feedstock to the manufacturing facility. As we look forward, it can be assumed for the purpose of the study t

Aug 16, 2023

E&IS

Research

3325B: Extreme Ice Thicknesses and Concurrent Wind Speeds in Canada Along the U.S. Border

Weather data at Canadian weather stations along the contiguous U.S. border were used to improvethe U.S. map of 50‐year equivalent radial ice thicknesses from freezing rain. Freezing rain stormswere extracted from the merged weather and daily precipitation data, and ice thickness wasestimated for each storm using the CRREL and Simple ice accretion models. The more severe stormswere investigated in contemporaneous local newspapers to determine the severity and extent of iceand wind‐on‐ice storm da

Aug 1, 2006

OTD

Research

50150: Surveillance Methods for Inspection of Critical Distribution Components

Assessing the condition of distribution assets – critical distribution components, in particular – is an important utility activity in maintaining or improving the reliability of overhead and underground distribution systems. Typically, asset condition assessment is accomplished via visual inspection by trained utility personnel walking/driving the line, climbing inspections (overhead systems) and visiting sites where the system is accessible, such as pad-mounted equipment and vaults

May 15, 2018 - Dec 18, 2019

DEP

Research

0425: CPF: Review of Data Screening Methods for Discharge/Inflow Time Series

Accurate streamflow and discharge/inflow data are critical to water resources professionals, as hydrologists, engineers, and hydropower managers rely on these data for their analyses and decision making. However, streamflow and discharge/inflow data are generally measured indirectly and are subject to multiple types of errors, which can have significant impacts on engineering decisions and consequently, public safety.Robust data screening techniques are required to identify and correct streamflo

Sep 6, 2013 - Jun 13, 2014

Research

3728: Guidelines for Grounding Steel Poles

Steel poles are becoming increasingly popular among utility companies as a substitute for woodenpoles. Some of the benefits of using steel poles rather than wooden poles include a longer lifespan,greater durability, less maintenance costs, and more environmentally friendly. To protect the safety ofthe public, and to fully realize the benefits of using steel poles, questions centered around the safetyand maintenance of steel poles for utilities need to be addressed. Effective grounding of steel p

May 20, 2020 - Aug 6, 2021

Research

0314: CPF: Penstock and Turbine Water Passage Hydraulic Smoothing

The deterioration of the surface condition of the water passages of penstocks and hydraulic turbines contributes to energy loss and thereby reduces turbine and overall plant efficiency. Case histories have demonstrated that by smoothing the water passage surfaces part of this lost energy can be recovered.Various methods exist which can be effective; however, there appears to be relatively little documentation that quantifies the degree of improvement. The field measurement of efficiency gains is

Apr 30, 2002

Research

3398A: Best Practices Guide for Extra High Voltage AC Transmission Lines (230 kV - 765 kV) - Electrical Aspects of EHV Line Design

The scope of this project includes a critical review of available technical information and recent developments paired with the rationale for these best practices and finally, the development of this guide. To address both the electrical and mechanical issues effectively, the present study was conducted in two phases. This report addresses the first phase of the study and includes the electrical aspects of EHV AC line design. The second phase of this study will address the mechanical aspects of

Jan 2, 2015 - Feb 15, 2019

OTD

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