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5057B: Electric Distribution Utility Roadmap: Common Infrastructure

In Phase I, an Electric Distribution Utility Roadmap report was released in January 2004 to provide a view of the evolution of the electric distribution utility environment over the next 20 years. It became clear that the industry as a whole could not survive if it chose to remain on the traditional, “Business as Usual” path. If current trends continued, utilities would find themselves in dire straits, unable to continue to sustain grid operations at acceptable levels. For some, it c

DEP

Research

3010: Investigation of Transformer Components

As the age of in-service equipment continues to increase, the quantification of remaining life for the critical equipment has become one of the key interests of transmission and distribution utilities. In particular, substation and power transformers are critical to the reliability of the transmission system; at the same time, they are expensive assets to replace. The current study has focused on the generation of transformer survivor curves from historical data submitted by the consortium mem

SE

Research

0139: Reliability and Performance Issues with Combustion Turbines

The use of combustion turbines for power generation has increased markedly over the past 20 years or so. Simple cycle CTs are increasingly being introduced to provide flexible and almost immediate response to power system demands. These are usually aero engine derivatives. However the biggest increase has been the growth in CTs associated with combined cycle plants. These units are usually much larger than the simple cycle CTs, and nowadays can be much larger than 100MW in output. Along with thi

Jul 21, 2014 - Jan 19, 2015

TGIG

Research

3086: Circuit Breaker Test and Maintenance Seminar

SE

Research

3332: Technology Watch: Sag-Tension Software for High Temperatures

Existing Sag‐tension calculation methods are described in this report, with emphasis on hightemperatures. Catenary and strain equations are explained, along with explanations as to how theseequations are implemented in the Elastic, Graphic and Strain‐Summation methods. For eachmethod, assumptions and approximations are examined and the benefits and limitations of eachmethod are discussed. Example calculations for the Graphic and Strain Summation methods areprovided, using spreadsheet calculation

OTD

Research

3040A/B: Overview of Statistical Methods, Models and Analysis for Predicting Equipment End of Life

Much has been written on the subject of utility equipment life cycle management. Once the equipment is installed and commissioned, it will be operated and maintained for many years. As the equipment ages, operators will have to decide whether to extend the life or replace the equipment.Currently, many utilities make use of some form of condition assessment modelling to determine the condition of equipment and prioritize the maintenance or repair. In these models a number of factors are weighted

SE

Research

3276: State of the Art Transmission Live Line Maintenance and Techniques

This project was initiated to investigate and report on the state of the art of transmission live line maintenance and to introduce any new work methods that can be employed to accomplish such work.It is crucial to determine how live line work techniques can minimize the impact of power outages while promoting reasonable practices and economics.This investigation included an exhaustive literature and market information search, as well as a survey of key existing current work practices in the art

May 18, 2018 - Feb 23, 2020

OTE

Research

5085: Distribution System Phasing Using AMI and DSCADA

The project objective was to develop a methodology of allocating feeder loads by phase, using information from Automated Metering Infrastructure (AMI) and Distribution Supervisory Control and Data Acquisition (DSCADA) devices. Accurate load phase information is important for operational planning and outage management. The work included a survey of AMI vendors for appropriate features and the enhancement of a branch current state estimation algorithm to identify load phase connections. The algori

DEP

Research

33143: Impact of Climate Change and Adaptation to Climate Extremes in Overhead Line Design

The increased frequency and severity of climatic extremes over the past few decades have been partly attributed to climate change. However, engineering practices and standards for transmission infrastructure assume weather and climate extremes will remain stationary over the long term. This assumption may not be valid under a changing climate. In this context, the objectives of this project are (1) to analyze the current state-of-the-art in science and practice vis-à-vis strategies for determini

Oct 23, 2020 - Sep 30, 2024

OTD

Research

0247: Ice Loads on Dams

Part 1This was part one of a three-part project to investigate ice loads on dams. This project consisted of three topics: extreme ice loads and the role of ice physical limits, ice load non-uniformity, and ice loads on small, low-head dams.Extreme ice loads were evaluated using various methods, including (a) empirical assessment, (b) partially-probabilistic, deterministic analyses, and (c) fully-probabilistic analyses. It was concluded that, to obtain realistic results, a fully-probabilistic ana

Feb 3, 2020 - Feb 12, 2021

DSIG

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