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30137: Innovation and Development of Substations

SEP member utilities are facing the challenge of selecting appropriate innovations capable of meeting their needs for simpler and more cost-effective substation design, operation and maintenance processes. The electric utility industry is in the process of intensive integration of intelligent electronic devices (IEDs) in HV substations throughout the network. Many utilities have made significant progress in the evolution of the digital substation over the past several years with the implementati

Apr 23, 2020 - Apr 1, 2021

Research

3231: Technology Review on ACSR Conductor Splice Inspection Methodologies

Existing methodologies, such as visual inspection, infrared inspection, and resistance measurement,for determining the integrity of ACSR conductor splices are in general use by transmission utilitiesaround the world. However, utility maintenance asset managers have observed that in someinstances these methods have failed to properly identify deteriorating splices. In such cases, thesubsequent splice failures may be catastrophic, resulting in potential risk to the public and workers,and interrupt

Sep 1, 2011

OTE

Research

3213: Guide for the Use of Composite Poles, Cross Arms, and Brace

This Guide for the Use of Composite Poles, Cross Arms, and Braces provides guidelines and specifications for standard materials and tests used in the manufacturing of composite structural poles, cross arms, and braces suitable for the use in the Power Industry, as well as describing general requirements for the manufacturing, design, assembly, erection and testing of composite structural shapes and connections for electrical transmission pole structures made from composite materials. Composite m

May 1, 2008

OTE

Research

50118: Distribution System Health Indices

The operating performance of distribution system assets degrades with service age; however, the rate of degradation of an asset’s operating condition is also dependent on the asset’s operating environment. Asset health indices rather than the service age, therefore provide a more accurate picture of the operating condition of distribution system assets at any point in their service life.This report provides guidelines and algorithms for the development of health indices for all distr

May 9, 2015 - Jan 1, 2016

DEP

Research

5167: Software Application for Calculation of IEC Flicker Indices Using Measured Voltage Quantities

IEC 61000-4-15 provides an algorithm for the computation of flicker perception, based on rms voltages sampled, following the recommendations of IEC 61000-4-30. Many power quality monitors use the algorithm to generate short-term flicker perception (Pst) and long-term flicker perception (Plt). However, many power quality monitors do not compute Pst and Plt. They do, however, provide long-duration recordings of rms voltage. As part of this project, a software application was developed that can be

Jun 30, 2014 - Nov 3, 2015

Research

3023: Transmission and Distribution Transformer Stations – Oil Containment, Spill Prevention and Spill Management

The implementation of stricter environmental regulations, the ageing of existing equipment, the high cost of remediation following an oil spill and the frequent occurrence of catastrophic spills require electrical utilities to review their programs regarding oil containment, spill prevention and spill management. This report is the result of CEATI’s LCMSEA Interest Group in connection with its participants’ desire to establish the existing and evolving regulatory requirements, curren

Aug 1, 2005

Research

5143B-05: Transformer Energizing Case Study

ABSTRACT: Energizing saturable devices, such as power transformers, results in inrush currents that are rich in harmonic components. The inrush current interacts with the system impedance vs. frequency characteristics to create a voltage waveform that can have significant harmonic components for the duration that the inrush current is present. Transformer inrush current typically decays over a period on the order of one second. The dynamic overvoltage problem is typically limited to cases of en

Mar 1, 2010

Research

5107: Indices To Assess Voltage Sag Performance

For many years, electricity distribution companies have used sustained interruption indices as indicators of the reliability of service provided on their systems. Today, however, many electricity consumers are adversely affected by more subtle voltage disturbances such as voltage sags and momentary interruptions. Many utilities are aware of these service quality concerns and are responding by implementing extensive monitoring systems that detect such disturbances and assess service quality. Furt

Jul 1, 2002

Research

50128: Investigation of Smart Inverters

Smart Inverters are a living technology and are evolving at a rapid rate. This project report presents the basic control concepts of smart inverters and introduces their operating capabilities. Various functions are described, along with the prioritization of each. The commercial functionalities currently offered by manufacturers are indicated, and operating experiences from several field installations and pilot projects are presented. It is demonstrated how the existing Standards do or do not f

May 15, 2015 - Mar 31, 2016

DEP

Research

5112: Case Studies On Utility-Scale Power Quality Mitigation Devices

This report provides information on PQ issues faced by large industrial and commercial customers (e.g. voltage dips, sags and swells, voltage transients, harmonics, flicker, voltage unbalance, stability, short-term interruptions). It describes the remedial options available to the host utility in the form of detailed application case studies of utility-scale PQ mitigation devices. Best Practice utility-side options for the mitigation of various PQ problems are identified in terms of costs, ben

Jul 1, 2002

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