Diagnostic methods for transformers on-site

Gockenbach, E.; Borsi, H.

doi:10.1109/iseim.1998.741851

Cited by 10 publications

(3 citation statements)

References 3 publications

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“…Investigations have shown that the ageing of materials in the electrical components is often found to contribute to internal failures, due to the presence of degradation stresses, such as electrical, thermal, mechanical and ambient (due to the associated environment) stresses [6], [7]. Thus it becomes necessary to do basic research in the material analysis (i.e.…”

Section: Ageing Mechanisms Of the Electrical Componentsmentioning

confidence: 99%

“…Tanks are affected by corrosion, which is related to operating time and maintenance history. The ageing of bushings by the thermal stress depends on the operating load of the transformer [6]. During the normal operation of on-load tap changers, the electrical behaviour of oil-impregnated transformers is affected by the produced particles, which correspond to the load current as well as to temperature and time.…”

Section: B Transformersmentioning

confidence: 99%

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Life asset management of the electrical components in medium-voltage networks

Zhang

Gockenbach

Borsi

2005

2005 IEEE Russia Power Tech

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Due to the large amount of electrical apparatus and the costs of an individual diagnosis in medium-voltage networks, a general consideration of some representative electrical components to assess the lifetime of the electrical apparatus is necessary. Under the investigation of the general ageing mechanisms of individual electrical components, a new method for the assessment of the lifetime of the electrical components is presented in this paper. This method utilises the life model, the probabilistic failure model and the enlargement law to predict the failure probability and the failure rate of the electrical components in medium-voltage networks for a future time period. Therefore, a relationship between lifetime and reliability of the electrical components is developed which supports the decisionmaking in deregulation of the electrical energy market later. It is demonstrated with cable and transformer data that the method is able to assess the lifetime and reliability of the electrical components with accurate and convenient data.Index Terms--assessment, electrical component, failure probability, failure rate, lifetime, medium-voltage network, model.

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Section: Ageing Mechanisms Of the Electrical Componentsmentioning

confidence: 99%

Section: B Transformersmentioning

confidence: 99%

Life asset management of the electrical components in medium-voltage networks

Zhang

Gockenbach

Borsi

2005

2005 IEEE Russia Power Tech

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“…Diagnosis and early detection of faults in a system help to avoid the occurrence of abnormal events and to reduce production loss [1][2][3][4]. In recent years, there has been an increasing interest in fault detection, as a result of the increased degree of automation and the growing demand for higher performance, efficiency, reliability, and safety in industrial power systems.…”

Section: Introductionmentioning

confidence: 99%

A robust algorithm based on a failure-sensitive matrix for fault diagnosis of power systems: an application on power transformers

Biçen¹,

Aras²

2015

Turk J Elec Eng & Comp Sci

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Abstract:In this paper, a robust algorithm for fault diagnosis of power system equipment based on a failure-sensitive matrix (FSM) is presented. The FSM is a dynamic matrix structure updated by multiple measurements (online) and test results (offline) on the systems. The algorithm uses many different artificial intelligence and expert system methods for adaptively detecting the location of faults, emerging failures, and causes of failures. In this algorithm, all data obtained from the power transformer, which have various nonlinear input and output parameters, are processed using the parallel matrix structure of the FSM to reach a global solution quickly. The parameters of a power transformer are used to verify the algorithm under 4 operating conditions simulated in the MATLAB-Simulink program. The obtained results show that the algorithm is convenient for determining incipient failures of a system that consists of multiple parameters.

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An operating procedure for the detection, identification, and location of partial discharge in cast-resin dry-type transformers

Chen

Wang

et al. 2011

2011 7th Asia-Pacific International Conference on Lightning

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Diagnostic methods for transformers on-site

Cited by 10 publications

References 3 publications

Life asset management of the electrical components in medium-voltage networks

Life asset management of the electrical components in medium-voltage networks

A robust algorithm based on a failure-sensitive matrix for fault diagnosis of power systems: an application on power transformers

An operating procedure for the detection, identification, and location of partial discharge in cast-resin dry-type transformers

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