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0421: CPF: Integration of Radar & Satellite Participation Estimates into Rain and Snow Gauge Networks

Rain and snow measurements are usually performed using ground-based gauge networkobservations. However, for remote regions, gauge measurement is limited. In the past few decades,with the availability of improved measurement systems such as radar measurements, satelliteestimates, and numerical weather prediction output, precipitation observation for regions wheregauge network data is not sufficient has been largely improved.Numerous data integration systems have been developed to combine the diff

May 11, 2011 - Apr 5, 2013

HOP

Research

3375: Emergency Restoration Methods Under Extreme Events - Best Practices

No one is immune to the powerful and disastrous effects of nature’s forces unleashed. While natural forces, such as storms (thunder storms, ice storms, fire storms and dust storms), hurricane force gusts (including tornadoes), landslides (avalanches and mudslides), earthquakes and floods are destructive, human forces (vandalism and terrorism) often add to an already long list of threats to the energy infrastructure. More specifically, transmission and distribution electric power grids are,

Mar 14, 2011 - Feb 4, 2013

OTD

Research

03101: Best Practice Guide for Maintaining Hydro Generating Station Power System Electrical Connections

Power system electrical (PSE) connections on the main power lines – from the generator to the transmission lines in hydro generating stations – are a critical component to the reliability of hydropower production. An experienced team of engineers, vendors, industry experts, and hydroelectric professionals was assembled in conjunction with an extensive literature search to develop a comprehensive maintenance and design guide for PSE connections. The primary objective of the project se

Feb 1, 2019 - Nov 5, 2020

Research

3321B: The Galloping Phenomenon - Occurring Problems and Solutions: NU Data

This report attempts to reproduce galloping events through simulation (based on examples of galloping at an actual facility), to determine the loads on towers during galloping and to compare the performance of existing galloping mitigation solutions or countermeasures (phase to phase spacers, detuning pendulums and spiral rods). This simulation study used the ""CAFSS"" analysis code, which is a non-linear analysis program for cables and three-dimensional framework structures using the finite el

Jul 1, 2006

OTD

Research

5035: State of the Art with Respect to the Protection of Multiple Primary Source Distribution Secondary Networks

Power distribution at utilization voltage levels in most large urban centres in North America is provided using either grid network systems or spot networks. Both arrangements are somewhat unique and sophisticated configurations which operate differently from other distribution systems.This report summarizes the findings of a project aimed at reviewing current practices related to the design and operation of grid and spot networks. It identifies the current state of the art with respect to pro

Jun 1, 2004

DEP

Research

3317C: Evaluation of Live Line Conductor Vibration Recorders, Part II: Laboratory Span Tests

Aeolian vibration of overhead transmission conductors can lead to fatigue damage. The fatigue damage is evident by broken strands at the suspension clamp of the conductor. Field vibration recorders are used to indicate the stresses that result in fatigue damage by measuring the bending amplitude at the conductor’s suspension clamp. The bending amplitude is relatively small, in the range of 0.25mm (0.01 inch). The task of the vibration recorder is to measure these small amplitudes in a very

Mar 1, 2008

OTD

Research

0306: Life Cycle Management of Hydro Assets - Phase II, Rev 1

As the age of in‐service equipment continues to increase, the quantification of remaining life for critical equipment has become one of the key interests of the owners of hydroelectric facilities. Inparticular, generator windings, turbine runners, thrust bearings, transformers and penstocks are critical to the reliability of the generating unit while, at the same time, being expensive assets to replace.The current study has focused on the generation of survivor curves for each of these component

Oct 6, 2006

HPE

Research

5075C: Worker Protection on De-Energized Distribution Lines, Phase III

Line technicians working on de-energized lines need to be protected from all shock hazards including accidental energization and induction hazards. An important question to answer is if protective grounding currently employed by utilities offers sufficient protection under all conditions and, if not, what can utilities do to provide a safe work environment for line technicians? Phase 2 resulted in several recommendations for future research, including further investigation on the subject of unde

Mar 15, 2012 - May 15, 2013

DEP

Research

7072: Gas Heat Pumps: Pre-Feasibility Study and Measurement & Verification Best Practices

Part AThis study examines the feasibility and cost-effectiveness of gas heat pumps and dual-fuel electric systems in the service territory of Consolidated Edison and Orange and Rockland utilities, covering New York City and much of the Hudson Valley. The review of previous gas heat pump pilot projects found in-situ coefficients of performance to be 1.05-1.3; a central figure of 1.15 was used for estimating energy savings and cost effectiveness. Gas heat pumps have the potential to save about 30%

May 28, 2020 - Mar 19, 2021

ADO

DSM

Research

3355: Technology Watch for Gaps in Knowledge About Conductor Fatigue

Transmission lines are engineering systems. Their design and maintenance require expertise in several aspects of engineering, in particular electrical, civil and mechanical. It is common practice though, in engineering, to separate problems into smaller ones and to try to find practical solutions to some particular aspects in order to achieve a safer and more economical product.The problem under study, aeolian vibrations and fatigue of conductors, presents a good example of such an approach. The

Jul 1, 2009

OTD

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