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3342: Technology Watch on Sensors for Wireless Real-Time Monitoring of Overhead Lines

OTD

Research

3907: Development of Protection Self-Training Modules

The handbook is organized and presented as 10 modules as follows:01 - What is Power System Protection and Why is it Required?02 - Protection System Components03 - AC Signal Sources04 - Protection Zones05 - Types of Protection Relays and their Operation: Current and Directional06 - Types of Protection Relays and their Operation: Impedance / Distance07 - Types of Protection Relays and their Operation: Differential08 - Protection Designations & Drawing Types0

Jul 8, 2020 - Sep 30, 2021

PC

Research

0408: Assessment of Inflow Forecasting Tools

In today’s competitive energy market, water managers need optimized strategies for maximizing the profitability of their hydropower systems. Accurate and reliable inflow forecasting tools are critical for hydropower operators to balance competing interests and make informed operational decisions leading to efficient use of water resources. Over the past decades, a large number of inflow forecasting tools have been developed with varying degrees of complexity, accuracy and performance, depe

HOP

Research

33107: Guide for Transmission Line Foundations with Least Impact to Environment

This report is a best practices guideline for the evaluation and selection of appropriate transmission line foundations with the least environmental impact. The methodology focuses on the review of published case studies supplemented with selected utility and consultant surveys along with the writer’s personal files on transmission line foundations susceptible to various sensitive and difficult environments conditions. Difficult environments can be classified as wetlands/waterways, mountai

Jul 17, 2015 - Jun 16, 2017

OTD

Research

5129: Distribution Network Impedances (English - French)

EnglishThis report presents an extensive investigation on the values and characteristics of supply system impedances in Canadian distribution systems. The investigation relied on extensive field measurements in six utility companies across the country and surveys of utility distribution system design practice. Circuit models were developed to support the analysis and result interpretation. Impedance data collected by other countries were also reviewed and compared to those obtained from this pro

PQ

Research

5143B-13: Harmonic Current Cancellation Case Study

ABSTRACT: Harmonic problems for industrial customers are generally caused by nonlinear loads such as adjustable-speed drives (ASDs), switching power supplies, electronic ballasts for fluorescent lighting, and arcing devices such as welders. These devices can cause nearby equipment, such as sensitive computer controls or digital clocks, to malfunction. They can also cause nearby transformers or other equipment to overheat. Finally, it is possible for these devices to cause voltage distortion or e

PQ

Research

5143B-07: Overview of Power System Transients

ABSTRACT: Transient voltages and currents are a result of sudden changes within the electric power system. Opening or closing of a switch or circuit breaker causes a change in circuit configuration and the associated voltages and currents. A finite amount of time is required before a new stable operating point is reached. All transients are caused by either connection or disconnection of elements within the electric circuit or injection of energy due to a direct or indirect lightning stroke or s

PQ

Research

33124: Guidelines for Appropriate Sampling Techniques in Inspection of Line Components for Risk Assessment

This report presents a methodology for implementing risk-based inspection sampling of conductors, towers, insulators and fittings on transmission overhead line assets. While foundations and wood poles were not covered in this methodology due to variation in degradation and failure mechanisms. This risk-based inspection methodology was undertaken by calculating an initial health index and consequence for each component on an overhead line. The initial health index is calculated using locational f

Sep 13, 2019 - Aug 12, 2022

OTD

Research

50151: Utility Guide For Inspection And Maintenance Of Distribution Overhead Systems

This project was completed to provide member utilities with a guide for assessing the condition of their overhead distribution line assets and applying appropriate maintenance activities to address this condition. This report discusses the types of inspections and tests – along with the frequency of those tests – used to identify the conditions of assets. Data collected from inspections and general asset information required to make effective maintenance decisions is utilized for thi

May 17, 2018 - Sep 18, 2019

DEP

Research

3317A: Assessment of the Technologies for the Design and Verification of Aeolian Vibration Damping Systems For Single Conductor Lines

With the purpose of helping utilities solve potential problems associated with Aeolian vibrations on single conductor overhead transmission lines, this report consists of an assessment of three technologies for the design and verification of damping systems. Two of these technologies are based on more or less extensive mathematical modelling of the conductor-damper system’s response to Aeolian vibrations coupled with laboratory testing of the dampers, while the third is based on direct fie

OTD

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