Integration of On-Line Monitoring to Maintenance Engineering Routines
Abstract Since the year 2000, Celeo Redes has been operating on the power transmission industry, and now has 12…
Voltage Control in Electricity Distribution Substation Transformers Using Intelligent Relays
Summary This paper presents a fuzzy strategy for voltage control in power distribution systems. This control system will act…
Comparison of the Efficacy of Off-Line Tests vs. On-Line Monitoring of Bushings for Failure Detection – Field Experience
Abstract On-line monitoring of the bushing conditions has been adopted by Tractebel for all the step-up transformers 550 kV…
Intelligent sensing of transformers for integration with management systems
Summary With the purpose of increasing the operation reliability and optimization of transformer maintenance procedures, Eletronorte looks for implementing…
Experience with the deployment of a national center for smart management of assets in Paraguay
Summary With the purpose of assuring good supply of Electric Power to its 1.3 million customers spread on a…
A Step-Up Transformer Online Monitoring Experience at Euzébio Rocha UTE [Thermal Power Plant]
Abstract The step-up transformers at the Euzébio Rocha Thermal Power Plant in Cubatão - SP [São Paulo] are key…
Predictive Technology in the Johnson&Johnson Power Transformer
Abstract Electric power is a fundamental input for the industrial production of the Johnson&Johnson plant in São José dos…
Rapid and very rapid evolution of bushing flaws detected by online monitoring
Abstract Because many transformer flaws originate at the bushings, in order to reduce the shutdowns for tests the offline…
Application of On-line Monitoring Systems in the view of Maintenance Engineering of Eletrobras Furnas
Abstract The increasing demand for greater reliability and continuity in electricity supply, confirmed by new applications of electricity, such…
Failure prevention in a 525 kv three-phase transformer through delta tangent online monitoring of bushings
Abstract Condensive bushings are an essential part of the insulation mechanism of high voltage equipment. Monitoring this component helps…
Decentralized Solution for Digitalization of Substations Using Protocol DNP3.0
Summary Due to large quantity of cabling needed for implanting a monitoring and control system using conventional equipment, Escelsa…
Experience with Voltage Regulation in Mixed Networks Using Multi-Parameter Relays
Abstract Resolution ANEEL 505 made voltage supply limits even stricter. As a result, voltage regulation in some of ELEKTRO’s…
Maximization of the use of power transformers
Abstract The purpose of this paper is to study the results of the implementation of the pilot project power…
On-line monitoring of regulator transformer at the Margem Direita SS in Itaipu
Abstract The importance of transformers in the SS Margem Direita of Itaipu for supply of power to Paraguay led…
Online monitoring of converter transformers of SS Ibiúna HVDC transmission system
Abstract The relevance of Ibiúna Converter Substation for the supply of electricity to São Paulo led Furnas to select…
Automatic switching system for fast backup phase energization in single-phase transformer banks
Abstract Due to the regulation of Brazil's electricity sector, the unavailability of power transmission equipment, such as power transformers,…
On-line Capacitance and Tangent Delta Monitoring for Condensive Bushings
Abstract In general, even though the unit cost for bushings is relatively low if compared to the total cost…
Decentralization and online monitoring reduce your transformer problems
Abstract Power Transformers, essential for transmission and distribution networks and, usually the more important assets of a substation, can…
Field experience with on-line DC bushing monitoring In HVDC system at Ibiúna Substation
Abstract The on-line capacitance and AC bushing delta tangent monitoring has reached good results in its application on power…
On-Line Condensing Bushing Monitoring – Working Principle
Abstract This article, published in Eletricidade Moderna magazine, shows the principle of operation of the monitoring condensive high voltage…
Field experience in online monitoring of a 343mva 230kv transformer with two OLTCs
Abstract In 2001, the first commercial online power transformer monitoring system in Brazil was installed at Alumar, one of…
Technical Report – Comparative Tests between the Treetech MO Online Moisture Monitor and the Water Content Analysis by Karl Fischer
Abstract This report presents the data obtained from deployment of two MO Moisture Monitors in an oil drying machine…
Field Experience with On-Line Monitoring of Two 150MVA 230kV Transformers with On-Load Tap Changers
Abstract In 2001 Eletrosul started operation of Itajai substation with two 150MVA 230-138kV power transformers with OLTC. This paper…
Our experience with the predictive monitoring system for high voltage transformers installed in Braskem’s plants
Abstract This work analyzes the practical results from implementation and operation of a modern predictive monitoring system in high…
Temperature Monitor – LaD
LAD has Treetech technology to control and thermal protection, with the cost adapted to small applications. Developed for applications…
Circuit Breaker Monitoring System of the Rio Verde Substation – Functionality and Performance Analysis
Abstract The present electric power scenario in Brazil and abroad has led companies in the industry to operate in…
The SFRA technique and its practical evaluation – a study based on measurements and models
Abstract When a transformer is subject to high currents caused by short circuit, electromechanical internal stresses can cause geometric…
Wireless network application for online monitoring system at the Santo Ângelo Eletrobras – Eletrosul substation
Abstract The purpose of this technical paper is to describe the wireless communication network technology integrated in the monitoring…
Step Up Transformer Online Monitoring Experience in Tucuruí Power Plant
Abstract The Step Up Transformers at the Tucuruí Hydroelectric Power Plant are very important for the National Interconnected System…
Evolution of the Sigma online monitoring systems for transformers and reactors at Eletrosul
Abstract High voltage assets in substations, such as transformer and reactors, are crucial for the safe operation and continuity…
On-line monitoring and diagnosis of power transformer with vegetable oil
Abstract The substitution of insulating mineral oils with fluids or plant origin in power transformers has awakened a high…
Experience with Online Monitoring of Capacitance and Tangent Delta of Condensive Bushings
Abstract Capacitance and tangent delta are acknowledged as some of the main parameters for bushing insulation condition diagnosis, because…
On-line monitoring of 354-138/13,8kV 150MVA autotransformer bank with OLTCs
Abstract In order to increase the substation’s transformation capacity, Furnas substation in the city of Campinas, received a new…
Modernization of temperature measurement and voltage regulation systems of a 60 MVA Power Transformer
Abstract The objective of this article is to show the advantages of modernization carried out in the voltage regulation…
Power Transformer Thermal Protection Modernization
Abstract Power transformers are vital components in a transmission system. The work to keep this equipment in dependable operating…
Specification of On-line Monitoring Systems for Power Transformers Based on a De-centralized Architecture
Abstract The changes in maintenance philosophy, with migration of maintenance actions from Preventive to Predictive have led to the…