Search results

Events

Research

Selected Filters

No filters selected.

Interest Group

Viewing 120 - 130 of 164

Sort By

Relevance

Research

33110: Residual Life Estimation of Non-Ceramic Insulators

Non-ceramic insulators (NCI) have become a highly developed alternative to conventional insulators made of glass or ceramic. They are widely and successfully used in all distribution and transmission voltage levels for AC and DC applications worldwide, with nowadays service experience of more than five decades. They have convincing qualities when designed appropriately, both in terms of construction and in terms of material selection. To ensure a reliable long-term operation, individual optimiza

Jan 12, 2016 - Apr 30, 2023

OTD

Research

33144: Numerical Simulations of Cascade and Mitigation by Load Control and Load Reduction Devices (LCD and LRD)

The primary objective of the present research work is to develop a “user friendly software” based on numerical models to study the transient response of the conductor and its effect on the tower after a break. The transient response will be simulated with and without the load reduction (LRD) and load control (LCD) devices. At least several of these devices including sliding clamps will be considered in developing the model and response evaluations. The numerical model will be validated by using

Jul 12, 2021

OTD

Research

3272: CPF: Guidelines for Managing Transmission Line Clearances

The management of electric transmission line and rights-of-way clearances is a critical component of the safe and reliable operation of the North American power grid. It is also in the interest of national security in both the United States and Canada. Both ratepayers and stockholders are concerned with cost effective management and regulators are interested in maintaining one hundred percent system reliability 24/7. The utilization of industry best management practices is crucial for meeting th

Mar 15, 2017 - Jan 9, 2019

OTD

OTE

Research

3358: Technology Watch Presentation on High Surge Impedance Loading of Transmission Lines

An expert on the subject of High Surge Impendance Loading (HSIL) attended the WISMIG 2007 April Meeting in Arlington to present the basic concepts of the technique, the governing aspects of transmission line capacity and where/when HSIL may be useful, as well as experimental and actual implementation of the technology and experimental and operating stretches. Finally, aspects of system studies, transmission line electrical studies, and HSIL engineering and project approaches as well as costs wer

Jul 16, 2009

OTD

Research

3312A: Guidelines for the Installation of Surge Arresters on Sub-Transmission and Transmission Lines Using Different Structure Designs at Voltages from 69 kV to 345 kV

Overhead Groundwires (OHGW) can provide good lightning protection, but tend to decrease transmission line reliability during other adverse weather conditions such as heavy wind and ice loading. Transmission Line Surge Arresters (TLSA) offer an effective alternative to the use of overhead groundwires for lightning protection, delivering approximately the same lightning reliability with fewer problems during icing conditions. However, target reliability will only be achieved if every TLSA has a

Mar 1, 2005

OTD

Research

3318: High Frequency De-Icing of Power Transmission Lines: Electromagnetic Radiation and Current Distribution

Icing of power transmission lines during winter storms is a persistent problem, causing outages and costing millions of dollars in repair expenses. CEATI Report No. T023700-3307 [1] proposed a method for de-icing the transmission lines through a combination of dielectric losses in the ice and skin-effect losses in the conductors.This report uses a simulation to analyze the distribution of current and voltage on a section of transmission line as well as the electromagnetic radiation of the electr

Jun 1, 2005

OTD

Research

33133: Application of New Innovative Materials in Line Design – Its Effectiveness in Improving Reliability and Performance

This report presents a comprehensive overview of the innovative materials used in the design of transmission line components and structures by utilities to upgrade the capacities of their systems. The document outlines the latest trends and advancements in the availability and adoption of innovative materials for line conductors, line insulators, support structures, and foundations. The report focuses on utilities’ practices in different parts of the world that includes North America, Euro

Oct 15, 2020 - Oct 7, 2022

OTD

Research

33102: Application of Transmission Structures for Underbuilt and Other Uses

This report presents information for transmission owners on best practices regarding the analysis and administration of underbuilt and ancillary facility attachments to existing transmission line structures. A literature review of existing codes, industry guides and other research documents was conducted to identify the existing standards as pertaining to loading and analysis considerations, clearances and safety, and construction and maintenance. An industry survey was also conducted to determi

Sep 1, 2015 - Jul 8, 2019

OTD

Research

3311: Methods and Systems for Collecting Icing Data and for Real time Monitoring of Ice Storms

This report describes and discusses the data on atmospheric icing needed for probabilistic design and reliable operation of electrical overhead lines and networks. It also recommends instrumentation systems and programs for field data acquisitions according to various levels of requirements as the operator may define them. The report emphasizes the relations between icing data from dedicated devices on ground, data from load cells etc. installed on overhead line conductors, physical models of ic

Oct 1, 2003

OTD

Research

3352: High Intensity Wind Case Study

Wind loadings considered in the design of overhead transmission lines are based on values derived from synoptic boundary layer data (NESC [25], CSA [10], IEC [20]). However, a survey of transmission failures conducted by CIGRE [26] indicated that the majority (80%–100%) of the weather related failures reported by several utilities were attributable to localized high intensity winds (HIW) such as downbursts or tornadoes. Although HIW related failures of transmission lines were first reporte

Aug 1, 2010

OTD

13 of 17

Viewing 120 - 130 of 164

Selected Filters

No filters selected.