Search results

Events

Research

Selected Filters

No filters selected.

Interest Group

Viewing 390 - 400 of 2180

Sort By

Relevance

Research

0252: CPF: Estimating Inflows and Associated Uncertainties - Guidelines

Understanding the hazards that arise from rare to extreme floods is important for reservoir management in terms of dam safety, maintenance, and operational perspectives. Estimates of floods are affected by substantial uncertainties from the natural variability inherent in the temporal and spatial extent of precipitation, runoff and flood-flow routing, knowledge uncertainty regarding the characterization of rare to extreme events, and the deep uncertainty associated with human actions and climate

Dec 24, 2020 - Sep 29, 2022

HOP

Research

3309A: Study of the Electrical and Mechanical Performance of Substation Equipment Subjected to Icing and Proposed Mitigation Solutions

This report reviews 29 anti-icing/de-icing (AIDI) methods for application to substation equipment, to prevent or reduce service interruptions due to ice or snow conditions. It provides sufficient information to understand the nature of the problems for various types of equipment, and to evaluate and select adequate solutions. Icing intensity, that is Water Equivalent Thickness (WET), is the key factor defining the nature and the frequency of problems for four types of equipment considered.

Aug 1, 2004

OTD

Research

0152: Identification and Mitigation of Barriers to Reducing Minimum Loads and Improving Ramp Rates for Coal-Fired Power Plants and Natural Gas Fired Combined Cycle Gas Turbines (CCGT)

This study provides information on plant improvements to increase ramp rates and decrease minimum stable operating loads. CEATI TGIG members were interviewed with a detailed analysis and past experiences to identify those areas of coal-fired power plants and natural gas-fired CCGTs that can be barriers to and limit a power plant, reducing minimum load capabilities and increasing ramp rates. Consequences associated with operating power plants at minimum loads are identified, and each barrier to m

Apr 1, 2021 - May 25, 2022

TGIG

Research

3901: Effective and Secure Protection Settings Data Management and Storage

Due to the growing number of multifunctional numerical protection relays used in the power system, spanning across generation transmission and distribution networks that work to protect all components against abnormal and fault conditions, the management of protection settings and configuration data is facing new challenges. These relays are no longer standalone, single-function devices, instead having multiple integrated functions, as well as additional exchange information with different syste

Jun 1, 2015 - Oct 2, 2017

Research

5079C: Arc Flash and Arc Blast Hazards On Underground Utility Systems, Phase I: Scoping Study for Arc Flash Testing

Existing arc flash models are designed for (1) open space scenarios and (2) arc-in-a-box scenarios,where the worker is located in front of the “box.” CEATI project 5079B investigated a third scenario– the “enclosed space” scenario. In this scenario, the worker is located in a small enclosed space, suchas a vault or a manhole, and an arc flash occurs inside this space. CEATI project 5079B resulted in amodel that is geared towards predicting incident energies for &ldq

Apr 20, 2011 - Nov 12, 2012

DEP

Research

3309B: Performance Evaluation of an Automatic Ice Control (AIC) Sensor on an Energized 230kV Transmission Line

This report presents the performance evaluation of an automatic ice control (AIC) device installed on a 230 kV line located near St. John’s, Newfoundland, Canada. The ice control device manufactured by Protura Inc. operates as a shaker to remove ice from an energized line and is effective for one or two spans on either side of the span where the device is installed. The device operates using the line current as the main power source and uses advanced communication protocol not only to tran

Feb 1, 2008

OTD

Research

3223: CPF: Condition Assessment of Coatings on Transmission Structures at the Above Grade Level

There are a variety of test methods that are used to evaluate the condition of protective coatings onsteel transmission lattice tower and tubular shaped pole structures at the above grade level exposedto atmosphere. The methods described in this report offer a step-by-step approach to inspect,assesses and assign condition rankings to aged (weathered) galvanizing, aged paint coatings, and theoxide layer (patina) that forms on the surface of weathering steel (structural steel with atmosphericcorro

Sep 1, 2011

OTE

Research

50163: Strategies to Reduce the Risk of Technological Obsolescence of Distribution Equipment

The accelerating pace of technological change and modernization in the utility sector has given rise to the risk of obsolescence of new technologies deployed as part of a grid infrastructure. The objective of this study was to investigate strategies to reduce the risk of technological obsolescence of electrical distribution equipment, including revenue meters, relays (including relays outside the station fence), reclosers, load break switches, voltage regulators, capacitor banks, faulted circuit

Feb 12, 2021 - Jan 19, 2022

DEP

Research

30102B: Evaluating the Advanced Substation Monitoring Capabilities of Digital Fault Relays, Fault Recorders, Power Quality Monitors, and PMU Equipment - Phase II

This project, CEATI SEAM 30/102B: “Evaluating the Advanced Substation Monitoring Capabilities of Digital Protective Relays, Fault Recorders, Power Quality Monitors and PMU Equipment – Phase II”, is a follow up work of the previous project, CEATI SEAM 30/102A, that EnerNex completed in 2016. The Phase I project included: 1) description of advanced substation monitoring applications, 2) summary of applicable standards, and 3) capabilities of advanced substation monitors. This Pha

Jun 26, 2018 - Dec 12, 2018

Research

0230: Grouted Post-Tensioned Rock Anchor Assessment

This report presents the results of an extensive study of grouted post-tensioned rock anchors installed in concrete gravity dams. The purpose of the study is to obtain a better understanding of the condition and capacity of existing post-tensioned rock anchors for which grout serves as the only form of corrosion protection. The performance of grout-protected anchors of various designs under actual site conditions is assessed to determine the effects of the aging process.Grout encapsulation was t

Nov 12, 2012 - Oct 24, 2016

DSIG

40 of 218

Viewing 390 - 400 of 2180

Selected Filters

No filters selected.