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3067: Substation Ground Grids—Additions and Modifications

Power delivery systems are in continuous evolution from load adjustments, network reconfiguration, supply additions, reliability requirements, regulatory directives, aging equipment, operating needs and new technology. Change to the power delivery system frequently initiates some form of substation project, and substation owners are challenged to identify if ground grid modification is needed, what the modification should be, and how to implement the modification in a safe and efficient manner.

Jul 15, 2010 - Jun 1, 2013

Research

0154: thermalAMP Consolidated Thermal Generation Equipment Condition Assessment Guide - Phase 1

In 2019 the members of the CEATI Thermal Generation Interest Group (TGIG) identified a gap in thermal plant condition assessment, scoring and documentation. The suggestion was made and supported to develop condition assessment guides following the work previously completed by hydroAMP (CEATI Report No. T172700-0367-2, hydroAMP Guide, Hydropower Asset Condition Assessment, Rev 2.0, April 2018). This initiative has led to a collaborative effort by the TGIG members to develop thermalAMP, a series o

Sep 1, 2021 - Dec 30, 2021

TGIG

Research

3287: Maintenance Program Optimization - Best Practices

Maintenance programs are integral to the management of the ongoing performance and sustainability of every utility asset base, including transmission overhead line assets. Maintenance work typically consists of three types of activities: visual inspection, asset testing, and asset repairs. Outcomes from maintenance activities can result in (a) repairs of asset components as identified by visual inspection or testing results, (b) degradation factor data to support the computation of a health inde

Aug 17, 2020 - May 27, 2024

OTE

Research

0214: A Guide to Temperature Measurements for Seepage Investigation and Monitoring of Embankment Dams

This guide is intended to give a deeper knowledge how to use temperature measurements tomonitor embankment dam seepage, including the fundamental principles, different measurementtechniques, and its application. It is based on practical experience and demonstrates how the methodhas been applied in several dam engineering projects.The use of temperature measurements forseepage detection in dams will be a valuable complement to conventional seepage monitoringmethods. The potential of the method is

Feb 9, 2009

DSIG

Research

30143: Guidelines for Spare Equipment Determination and Management

The determination and management of spare equipment – particularly substation infrastructure – represents an important but often overlooked component of a utility’s operations. In recent years, CEATI has conducted several surveys of its member organizations to identify the strategies they employ to determine and manage their spares and understand the general frameworks from which its constituents were working. Acknowledging that this sector of utility operations has advanced since this initial r

Jul 1, 2022 - Nov 12, 2024

Research

30133: Development of Reference Standard of RCM Worksheet for Substation Assets

Reliability centred maintenance (RCM) is a methodology incorporating structured decision-making support processes that focus on the optimization of maintenance tasks and intervals for assets, as defined in its operating context. It is a process that can be used to determine the failure management policy of any physical asset within a utility, such that useful life and reliability are increased while considering safety, environmental, economic, and operational consequences (e.g., SAIDI and SAIFI

Apr 23, 2019 - Nov 18, 2020

Research

3073: Review and Summary of Key Standards and Guides for Power Switchgear

In this report, the key standards related to high voltage power switchgear are identified and summarized. Key topics and sub-topics have been developed and are related to each of the summarized standards by the use of a relevance matrix. This review and summary of key standards and guides will help utility engineers in the selection of the appropriate standards and ratings to conform to their needs and specifications. It will enable them to judge which standard is most appropriate when specifyi

May 15, 2011 - Jan 26, 2012

Research

30128: Online Monitoring Partial Discharge Analysis of Substation Transformers

The purpose of this work was to discover the technical state-of-the-art relative to on-line monitoring of partial discharge (PD) in power transformers. A literature search was conducted to uncover any new technologies being developed that perhaps are not yet commercially available, particularly as it may relate to artificial intelligence or machine-learning techniques to identify and categorize partial discharge patterns. A survey was developed and shared with utility customers to discover their

May 21, 2018 - Jun 15, 2021

Research

33121: Operating Limit for Conductor Temperature and its Impact on Splices

This report summarizes key information gleaned from technical literature and utility survey responses regarding the use of HTLS conductor systems (conductors and connectors) in uprating existing lines and in designing and constructing new overhead transmission lines.According to the most recent CIGRE technical brochures on HTLS conductors [1], [2], ACSR is traditionally grouped with AAC, ACAR, and AAAC as conductors expected to be operated at low temperatures not exceeding 95 Celsius for ex

Sep 1, 2018 - Feb 5, 2021

OTD

Research

0353: Vibration Analysis - Force and Vibration Relationship

During test runs after upgrading of Forsmo U4 in 2005, the hydropower unit underwent two emergency stops due to excessive vibrations in the shaft train. The investigation that followed showed that the unit was inclined, under certain operational conditions, to start resonating at a frequency of approximately 2.3 times the nominal rotational speed, with extremely large vibrational amplitudes. A dynamic analysis of the rotor in the unit also confirmed that the unit had three eigen-frequencies with

May 1, 2008

HPE

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