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3365: Development of a Vision Based Real-Time Ice Detection System

A state of the art early ice warning system was developed and implemented for the Manitoba Hydro Ice Storm Management Program. This vision based ice detection system measures ice accumulation using digital images directly from the overhead line conductors. The ice detection system provides early warning ice alarms, ice accumulation rate information, and accurate visual information of ice profiles to the appropriate staff using the corporate LAN network infrastructure. The system provides additio

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3357: Guide to Identify and Rank Critical Facilities

Transmission lines and power transformers at transmission substations represent a major portion of bulk transmission systems. and these assets must perform well in order to achieve a high level of reliability for the bulk power system. Such high performance can be achieved if there are no budget restrictions. In many cases, budget constraints have been imposed, and the owner of the system has to set priorities with regard to the work that needs to be done on these transmission components. Such w

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33148: Risk Assessment of Overhead Lines to Tornadoes, Downbursts and Microbursts

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33135: Seismic Adequacy of Steel Tubular Pole Structures

The objective of this project is to develop a state-of-the-art and state-of-the-practice report to foster a better understanding of how to assess and evaluate seismic adequacy and performance of steel tubular pole structure and foundation system under seismic loads and differential ground displacements. The project will focus on developing analysis and design methodologies that address evaluating seismic performance of combined conductor-pole-foundation-soil interaction system including effects

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3343: Comparison of Calculated and Measured High-Temperature Sags and Enhanced Stress-Strain Tests

This report examines factors that affect high-temperature sag data and computations. These factors include:Conductor Properties (Stress-Strain, Creep and Thermal Expansion)High-Temperature Assumptions (Compressive Stress, Built-in Tensile Stress)Sag-Tension Calculation Method (Elastic, Graphic, Strain Summation)Problem DefinitionStructure MovementPre-Tension MethodConductor RotationData for 12 high-temperature sag tests were obtained from Hydro One, EPRI and 3M. WSIMIG utility participants com

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33111: Guidelines for Assessment of Existing Foundations

The primary goal of this research effort is to establish best practice guidelines for the assessment, cost-effective maintenance and rehabilitation of existing transmission line (TL) foundation assets to meet future demands. Integrity of the structure-foundation system is often compromised due to aging, corrosion, erosion, cracking, challenging site characteristics, and extreme environmental or climatic conditions that can reduce useful service life. Assessing the exact mechanism and rate of fou

Dec 1, 2016 - Jun 12, 2019

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3304B: Numerical Simulation for Dynamic Response of Overhead Lines with or without Load Control Devices ?

ADINA software (900-Node version) has been examined and used for performing dynamic analysis of a transmission line subjected to conductor or insulator breakage. A non-linear computer model was developed to simulate the dynamic response of a two-span and single-phase line section, considering the non-linear behaviors of conductor material and action, insulator swing movement, and flexibility of the supporting structure. Both static and dynamic analyses were carried out under the condition of bro

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3323: Modelling and Prediction of Failure of Transmission Lines Due to High Intensity Winds

The proposed 3-year program is for Validation and Implementation, encompassing:Testing of tower/line physical models in a novel large-scale downburst simulator (based on a wall jet), with comparison to conventional loads derived from atmospheric boundary layer profile wind tests on those models.Validation of the tornado CFD model using new data from a tornadic chamber.Completion of a simplified downburst loading model and corresponding tornado load model. Development of a downburst risk mod

Sep 1, 2006 - Sep 1, 2012

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3304A: Load Control Devices (LCDs) For Overhead Lines Phase 1

This investigation concerns itself with a review and assessment of the effectiveness of load control devices (LCDs) for reducing the effect of environmental overloads on transmission and distribution power lines.

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3312C: Evaluation of Cost Reduction for Overhead Lines if Ground Wires Are Not Used

This report was prepared to determine the cost reduction for an overhead transmission line if ground wires are not used. The results will be used to complement CEATI Report T023700-3312B "Cost Benefit Analysis for Overhead Lines by Comparing Two Design Alternatives - Overhead Ground Wires versus Surge Arresters."This report gives the cost reduction compared with the cost of towers and their foundations.

Feb 21, 2005 - Jun 30, 2005

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