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0319: CPF: Maintenance Measures for Intake Gates and Penstocks

The emergency closure devices on the intake structures of hydroelectric generating stations are critical to their continued successful safe operation. This report examines current maintenance practices of the hydroelectric industry for emergency closure devices such as gates, valves and penstocks. It is based on a survey that was developed and distributed to CEATI participant utilities. Using the results collected, this report seeks to identify trends in maintenance procedures. It also explo

Dec 4, 2004

Research

3702: Soil Resistivity Testing

The design of a substation or line almost always includes resistivity testing, given that soil varies somuch between sites. Those who test resistivity tend to follow a routine procedure, even whendiversity is warranted. For example, a thick conductive layer over high resistivity bedrock requires aparticularly long distance between probes relative to the station length. Errors in resistivity data aredifficult to uncover and may become known only when commissioning the completed station.Especially

Nov 15, 2011 - Jun 1, 2013

Research

3379: New Material for Replacing Copper for Grounding in the Transmission System

Copper has been used by electric utilities from the beginning due to its outstanding thermal and electrical conductivity. One of the more common applications in power transmission has been the use of copper for grounding rods and wires as a critical safety component of any electrical piece of equipment, system, or structure. In such applications, it carries the current generated either from an equipment malfunction or lightning away safely, into the ground. Since copper continues to increase in

Jun 1, 2011 - Mar 5, 2012

OTD

Research

3301: Assessing Design Approaches for Overhead Transmission Lines Under Climatic Loads for New Projects as well as for Verification of Lines to be Upgraded

Based on a survey of the Canadian, American, French and Japanese participating utilities of the CEATI Wind and Ice Storm Mitigation Interest Group (WISMIG), and a review of relevant National and International standards and documents, similarities and differences in the design practices under climatic loads for overhead power lines and components are identified. Structural reliabilities of these design practices are evaluated through three simple cases: as suspension steel lattice tower, a tangen

May 1, 2003

OTD

Research

0205B-1: Investigation of Geophysical Methods for Assessing Seepage and Internal Erosion in Embankment Dams: Self-Potential Field Data Acquisition Manual

T992700-0205B-1. Self-Potential Field Data Acquisition Manual This volume marks one of a series of reports on the subject of geophysical methods and their use in assessing seepage and internal erosion in embankment dams. These reports are available both separately and as a package.This field manual is designed to help the user obtain high-quality self-potential (SP) data in support of embankment dam seepage investigations. The manual covers SP survey design, equipment, data acquisition

Dec 1, 1999 - May 1, 2005

DSIG

Research

3266: CPF: Transmission Line Defect Rating Criteria and Methodology for Rating Defects

This report addresses asset managers' need for consistent reporting of defects by inspectors. Five defect categories are used to categorize component condition, ranging from ‘New’ to ‘Failed’. A set of photos showing typical component conditions was assembled for each component and category within that group. The photo galleries cover all visual condition aspects for above ground component groups. Some defect conditions may require laboratory evaluation and the visual con

Feb 16, 2016 - Sep 21, 2017

OTE

Research

5123: Power Quality Impact Assessment of Distributed Wind Generation

This report addresses the important aspects of distributed wind generation impacts on power quality. The results presented in this report provide distribution engineers with data necessary to effectively understand and evaluate the impact of wind turbine installations on distribution systems. This report discusses the various wind turbine technologies and how they can affect distribution system voltage regulation, flicker, harmonics, and protection coordination. Sensitivity analyses are also

Jun 1, 2005

Research

5091: State-of-the-Art Portable Partial Discharge Meters Comparison

This report critiques the suitability and adequacy of commercially available portable Partial Discharge (PD) measurement instruments for use by maintenance staff for accurately detecting and diagnosing PD activity on distribution equipment and more specifically underground distribution equipment that may be approaching failure. Such early detection of PD activity is considered critical to safe guarding utility workers. While establishing suitability of portable PD meters, characteristics related

Dec 11, 2011

DEP

Research

0538: Agricultural Biomass Torrefaction Research Program

The major challenge to using agricultural biomass feedstocks as a coal substitute in utility applications is that it not only requires special handling and processing equipment but it is also severely limited in the percentage of co-firing possibilities. However, the torrefaction process has the ability to improve these properties. Combined with densification, torrefaction can significantly increase the energy density and handling properties of agricultural materials and also make them essential

Jan 1, 2012 - Dec 1, 2013

E&IS

Research

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

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