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T382A: Lightning Ground Flash Density Measurements in Canada (January 1, 1990 To December 31, 1996)

In Phase One of the CEA project entitled, "Lightning Ground Flash Density Measurements in Canada", suitable instrumentation was selected, manufactured, and installed for the collection of lightning flash counts. The purpose of the present report is to describe Phase Two of the project, present the results obtained to date, and to provide some analyses of them. The process of accumulating accurate and reliable lightning information from a total of 74 Lightning Ground Flash Counters distributed ac

Oct 1, 1992 - Mar 1, 1996

OTD

Research

T328: Study of Effective Aeolian Wind Power Imparted To Single Conductor Spans

The effective aeolian wind power imparted to single-conductor spans is deduced from field tests of four conductors at the Magdalen Island test site and from laboratory measurements of the internal power dissipated in each conductor using the standing-wave—ratio technique. Measurements of wind turbulence at the test site yields the intensity of the turbulence as a function of the wind velocity component normal to the direction of the test line.Two methods of analysis are used. The first, co

Dec 1, 1986

OTD

Research

T510: Aeolian Vibration Excitation of Bundle Conductors - Volume I, II

The objective of this project is to measure, under laboratory conditions, the aeolian wind power imparted to bundle conductors on overhead electric power lines. To help accomplish this objective, a literature survey was conducted to draw on the experiences of other researchers to optimize the design and procedure of the tests. An adjustable two conductor bundle model was constructed and tests were performed in the University of Toronto micrometeorolgical wind tunnel.This report is divided into t

Mar 1, 1989

OTD

Research

T992: Validation of Ice Accretion Models For Freezing Precipitation Using Field Data (A-D)

As part of the validation process of three ice accretion models for freezing precipitation, a project was sponsored by the Canadian Electricity Association (CEA) in which three Canadian utilities participated by providing data collected from their test sites. These sites were fully instrumented with various loading as well as meteorological sensors and operated between 1994 and 1997. Three models tested are: Chaine, MRI and Amodel.The Chaine model is primarily an empirical model while the other

May 1, 1998

OTD

Research

T799: Testing of Metrex Ice Free Anemometer

In March 1991 the current project, 017 T 799, was initiated to test a new version of the Metrex anemometer. This version was tested in the icing wind tunnel at the National Research Council of Canada and at several field sites in Ontario and Newfoundland.

Sep 1, 1997

OTD

Research

T751: Development of Improved Test Methods and Performance Criteria for Vibration Dampers PHASE I

This report covers a questionnaire of utilities and manufacturers, and a literature survey related to the testing and performance of aeolian vibration dampers. The testing methods are to evaluate the damping performance and the fatigue endurance of various types of vibration dampers. The surveys show a need for standardized testing methods and a greater need for standard acceptance criteria. The results show that different damping tests and acceptance criteria are needed for type testing and for

Dec 1, 1990 - Jun 1, 1991

OTD

Research

T478: Field Testing of Ice Free Anemometer

In this report, the testing of the ice-free anemometer in the icing wind tunnel and at Ontario Hydro's Orangeville test site are discussed in detail.

Sep 1, 1989

OTD

Research

T242: Development of Improved Analytical Models For Vibrating Conductor-Damper Systems

Substantial economic and environmental benefits could result if the present vibration constraints on transmission line conductor tension were eliminated. The objective of this project was to develop experimentally verified analytical models of vibrating single-conductor-damper and bundle-conductor-spacer-damper systems which could be used to improve and optimize the design of aeolian vibration dampers and their positioning in conductor spans.

Mar 29, 1988

OTD

Research

T124: Ice-Free Anemometer & Associated Power Supply

The Ultrasonic Anemometer is described and its capabilities are demonstrated.

Jun 1, 1984

OTD

Research

T258: Instrumentation Package For Monitoring Wind & Ice Loading On Overhead Transmission Lines Volume I and II

This report describes the hardware/software design and field testing of a data acquisition system capable of meeting the specifications of unattended operation for extended time periods in all weather conditions. The system is portable and interfaces directly both to a load cell, designed for monitoring phase conductor loading on a transmission line, and to a weather station.

Nov 1, 1987

OTD

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