Statistical lifetime of hydro generators and failure analysis

Sumereder, Christof

doi:10.1109/tdei.2008.4543104

Cited by 47 publications

(25 citation statements)

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“…The methods can act as a guide in the durability analysis of small hydro power plant. [20] studied the characteristics of the insulation systems for hydro generators using the statistical methods. The result show most defects occur in the electric system and are caused due to aging and electrical, thermal and mechanical load.…”

Section: ) Statistical Methodsmentioning

confidence: 99%

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A Review on Data-driven Predictive Maintenance Approach for Hydro Turbines/Generators

Wang¹,

Wang²,

Li³

2016

Proceedings of the 6th International Workshop of Advanced Manufacturing and Automation

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Abstract-Hydroelectricity as a renewable energy to respond the increasing population and environment crisis is widely used in the world. With the Hydro Turbines/Generators (HTG) being more and more complicated, the maintenance play a more and more important role in the production management in the hydro power plant. Many researches had concentrated on the predictive maintenance for the HTG in recent years. From the perspective of data-driven, this paper reviews and summarizes the key techniques regarding data acquisition, data processing, data analysis and data mining for the predictive maintenance of HTG. Especially, it place emphasis on the data-driven models for the diagnostics and prognostics. Finally, the paper concludes the current practices and presents a future research work.

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Section: ) Statistical Methodsmentioning

confidence: 99%

“…[20,22] applied the Weibull distribution to evaluate the statistical lifetime of hydro generators based on insulation system and the failure rate of the components. The bathtub curve of failure rate will guide the maintenance strategies of the hydroelectric generator.…”

Section: ) Statistical Methodsmentioning

confidence: 99%

A Review on Data-driven Predictive Maintenance Approach for Hydro Turbines/Generators

Wang¹,

Wang²,

Li³

2016

Proceedings of the 6th International Workshop of Advanced Manufacturing and Automation

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“…EVALUACIÓN DE ESTADO Es importante aclarar, que es difícil asegurar que unidades están a punto de presentar una falla o con un grado de envejecimiento excesivo [8], ya que el envejecimiento es complejo y abarca agentes térmicos, eléctricos y químicos [9]. Pero lo que sí se puede evaluar, es la semejanza en el estado de los generadores; es decir, cuales generadores presentan valores similares en todas las variables analizadas y cuáles no.…”

Section: Selección Del Número De Componentesunclassified

Evaluación del estado del sistema aislante de los generadores de potencia de la Central Hidroeléctrica Salto Grande utilizando Análisis de Componentes Principales

Cocco¹,

Valla²

2014

2014 IEEE Biennial Congress of Argentina (ARGENCON)

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The objective of this paper is to apply Principal Component Analysis to evaluate the aging state of the insulation system of the generators of Salto Grande identifying the mostly aged units. This hydropower plant has 14 generators of 135 MW each, with an average age of 32 years. From the analysis it was concluded that there is no evidence of critical units, which require rapid intervention. But there is an aging process, which is not equal on all generators, as there are generators showing a more advanced aging stage. This is key information to define a work plan for maintenance, or to recommend detailed inspections by specialists, or define an upgrade plan. Resumen-El objetivo de este trabajo es aplicar Análisis deComponentes Principales para evaluar el estado de envejecimiento del sistema aislante de los generadores de Salto Grande e identificar las unidades mayormente envejecidas. Dicha central hidroeléctrica posee 14 generadores de 135 MW cada uno y con una edad promedio de 32 años. Del análisis realizado se concluyó que no hay indicios de unidades críticas, las cuales necesiten una rápida intervención. Pero existe un proceso de envejecimiento, el cual no es parejo en todos los generadores, evidenciando generadores con un estado de envejecimiento más avanzado. Esta es una información clave para definir un plan de trabajo en mantenimiento, para recomendar inspecciones detalladas por especialistas o definir un plan de renovación de las unidades.

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“…The statistical parameters for this diagram were determined by the median of the breakdown times. Normally a Weibull distribution [6] is applied for life time investigations of electric equipment, but due to a statistically low number of test specimen its use was not appropriate.…”

Section: Life Time Testsmentioning

confidence: 99%

Thermal and lifetime behavior of innovative insulation systems for rotating machines

Sumereder

Muhr

Senn

et al. 2008

2008 18th International Conference on Electrical Machines

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The innovative insulating tape for rotating machines shows advantages concerning the electrical and mechanical strength as well as its thickness and thermal conductivity. In this paper the new developed mica tapes should be tested with respect to the thermal behaviour of the end corona protection and voltage endurance of various types of used mica paper. For this reason a test series of different defined insulation systems was carried out to test the temperature rise and a long time test with increased voltage stress was applied. The results were evaluated within a statistical analysis and lifetime charts.

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Statistical lifetime of hydro generators and failure analysis

Cited by 47 publications

References 1 publication

A Review on Data-driven Predictive Maintenance Approach for Hydro Turbines/Generators

A Review on Data-driven Predictive Maintenance Approach for Hydro Turbines/Generators

Evaluación del estado del sistema aislante de los generadores de potencia de la Central Hidroeléctrica Salto Grande utilizando Análisis de Componentes Principales

Thermal and lifetime behavior of innovative insulation systems for rotating machines

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Statistical lifetime of hydro generators and failure analysis

Cited by 47 publications

References 1 publication

A Review on Data-driven Predictive Maintenance Approach for Hydro Turbines/Generators

A Review on Data-driven Predictive Maintenance Approach for Hydro Turbines/Generators

Evaluaci&#x00F3;n del estado del sistema aislante de los generadores de potencia de la Central Hidroel&#x00E9;ctrica Salto Grande utilizando An&#x00E1;lisis de Componentes Principales

Thermal and lifetime behavior of innovative insulation systems for rotating machines

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Evaluación del estado del sistema aislante de los generadores de potencia de la Central Hidroeléctrica Salto Grande utilizando Análisis de Componentes Principales