Development of a New Type Insulation Diagnostic Method for Hot-Line XLPE Cables

Yamaguchi, S.; Soda, Shinnosuke; Takada, N.

doi:10.1109/mper.1989.4310783

Cited by 14 publications

(1 citation statement)

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“…Aiming the diagnosis of the operational conditions of an insulated cable, in terms of life expectance, several methods have been developed and employed to support decisions about the appropriateness of various actions, ranging from repairs up to replacement or this component. In particular, seeking practical ways for determining the final effects of water tree phenomena on cable degradation and observing studies about modeling and diagnosis, several research, like those presented in [1][2][3][4][5][6][7][8][9], are intended to propose procedures to detect this kind of failure through the extraction of information from performance parameters that indicate the degradation level of the insulation layer of a power cable. The methods found in the aforementioned references have different approaches to ascertain power cable status.…”

Section: Introductionmentioning

confidence: 99%

A real site application of a diagnose method at Estimating Insulated Cables Degradation using Non Linearity Indicators

Velasco¹,

Reis²,

Oliveira

et al. 2013

REPQJ

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The quality of electricity supply, among other issues, deals with continuity indicators as one of the most important factors for the characterization of an adequate service as far as power quality is concerned. In this context, one of the major problems responsible for the unscheduled interruptions is related to the degradation of electrical cables insulation and the well-known water tree effect emerges as an important cause for the deterioration of their insulation layer. If this phenomenon happens large loss of insulating properties of dielectric material used to build up such component will occur. In light of these facts, the development of procedures to evaluate, predict and indicate the operational status of operating cables shows highly attractive in order to improve the quality and reliability of energy supply. Focusing this subject, this paper presents a synthesis of existing methods and a new trend towards the mentioned matter. By using experimental measurements, carried out in medium voltage commercial operating cables in a distribution utility throughout non-invasive approach, applied voltage and insulating leakage currents are obtained so support the analysis. The data are used to obtain degradation indexes to estimate the cables physical operational conditions and the found indicators are further considered in viewing the effectiveness of the strategies for the diagnosis purposes.

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Section: Introductionmentioning

confidence: 99%

A real site application of a diagnose method at Estimating Insulated Cables Degradation using Non Linearity Indicators

Velasco¹,

Reis²,

Oliveira

et al. 2013

REPQJ

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Application of GPT to tan delta measuring apparatus for distribution cable in hot line

Iga

Aihara

Fujiwara

et al. 1991

IEEE Trans. Power Delivery

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An approach to improve power supply continuity throughout the estimation of insulated power cable life expectance indexes

Velasco

Silva

Oliveira

et al. 2011

XI Brazilian Power Electronics Conference

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⎯ Questions related to power quality definitely challenges engineers all over the world. Amongst these, the matter of supply reliability emerges as an important factor towards the improvement of continuity indexes such as the duration and frequency of interruptions. In such a way, information associated to the operational conditions of equipment such as transformers, cables, etc. have a relevant role in the overall electrical complex behavior. Focusing the insulated cables operational status, the occurrence of physical degradation phenomenon such as the so called water tree appears as a common cause for cable life expectance reduction. Having in mind this target, this paper considers the basis related to this effect and describes a procedure to estimate the actual conditions of a given cable. A hardware and software structure is then presented and first experimental results are described to highlight the proposal potentiality at finding operational indexes about the component life expectance.

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Development of a New Type Insulation Diagnostic Method for Hot-Line XLPE Cables

Cited by 14 publications

References 0 publications

A real site application of a diagnose method at Estimating Insulated Cables Degradation using Non Linearity Indicators

A real site application of a diagnose method at Estimating Insulated Cables Degradation using Non Linearity Indicators

Application of GPT to tan delta measuring apparatus for distribution cable in hot line

An approach to improve power supply continuity throughout the estimation of insulated power cable life expectance indexes

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