Electrical Breakdown Characteristics and Testing of High Voltage XLPE and EPR Insulated Cables

Bahder, G.; Sosnowski, Marcin; Katz, C.; Eaton, R.; Kleinr, K.

doi:10.1109/tpas.1983.318205

Cited by 33 publications

(4 citation statements)

References 3 publications

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“…A threshold for XLPE is found both in [24] and in E's], at values ranging from 10 to 16 kV/mm. A linear behavior was detected for EFR in [24] and [ 2 5 ] , but with fairly different values of ESo (lower than those achieved by this research) and …”

Section: Discussionmentioning

confidence: 99%

Long-term electrical performance and life model fitting of XLPE and EPR insulated cables

Cacciari

Montanari

Simoni

et al. 1992

IEEE Trans. Power Delivery

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In the paper the results of life tests performed on XLPE and EPR cable models are presented and discussed. The performances of the two insulating niaterials when subjected to electrical stress are compared on the basis of characteristic parameters derived by the best-fitting life models. It is found that while EPR is well described by linear models, XLPE data fit curvilinear life models, showing tendency to electrical threshold. Hence the fundamental parameter for XLPE characterization is the threshold value, while the voltage endurance coefficent should be used to characterize EPR. Considerations on test and data-processing metodologies, as well as insulation design, point out the criteria to be used for the two models.

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Section: Discussionmentioning

confidence: 99%

Long-term electrical performance and life model fitting of XLPE and EPR insulated cables

Cacciari

Montanari

Simoni

et al. 1992

IEEE Trans. Power Delivery

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“…However, this does not seem to apply to the ageing results examined because two similar cables with the same 1.5 mm insulation thickness yielded very different Δ V values. In addition, the Bahder4 cable with a 1.27 mm insulation gives a much larger Δ V . Thus, the insulation thickness may play some role, but it is not the only geometric parameter.…”

Section: The Ageing Modelmentioning

confidence: 99%

“… Comparison between experiments (symbols) and calculations (lines) using eqn 7 for the low field value of the activation energy. Results are taken from refs 3, 4 and 7. …”

Section: The Ageing Modelmentioning

confidence: 99%

Influence of high electrical fields on ageing and polarization properties of polyethylene

Crine

2002

Polymer International

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The influence of high electrical fields (above 20 kV mm−1) on ageing, polarization and morphology of polyethylene (PE) is discussed. Infrared and positron annihilation spectroscopy measurements together with capacitance measurements tend to indicate that polymer morphology is modified by high fields. We show that accelerated electrical ageing characteristics of PE are directly linked to morphology changes induced by the field. Below a so‐called critical field, the activation volume of the ageing process is dependent on field‐induced strain. Above the critical field, the amorphous phase is significantly deformed and weak van der Waals bonds are broken, leading to another faster ageing regime. There is excellent agreement between the proposed model and experimental data obtained with PE‐insulated high voltage cables. The possible relation between the submicrocavity formation proposed in our ageing model and various polarization measurements is discussed. It is our contention that strong charge injection occurs only after submicrocavity formation, ie after weak bonds are broken. As is well known, polarization currents obtained under high fields are controlled by space charges. It seems that wave packets and the negative resistance observed above 100 kV mm−1 in PE are associated with a steady state in field‐induced defect formation. This suggests that space charges are related to the formation of submicrocavities and, therefore, are a consequence and not a cause of high field ageing. © 2002 Society of Chemical Industry

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“…Lifetime models are generally divided into single-factor and multi-factor lifetime models. The single-factor lifetime model includes the thermal stress lifetime model based on the Arrhenius equation and the electrical stress lifetime model based on the inverse power model (IPM) [10,11]. Zhang et al calculated the residual lifetimes of 110 kV XLPE cables based on the Arrhenius equation [12].…”

Section: Introductionmentioning

confidence: 99%

Electro-thermal breakdown measurement of 500 kV cross-linked polyethylene submarine cable insulation material and its lifetime model analysis

Hao

Zhiqian

Liao

et al. 2020

IET Science, Measurement &Amp; Technology

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The first 500 kV AC cross-linked polyethylene (XLPE) cable in the world has been installed in China in 2019. The insulation performance of insulation material under the electro-thermal stress is the basis for its service life. At here, the AC breakdown voltage values and the breakdown time of the 500 kV AC XLPE submarine cable insulation material under the electro-thermal step stress was analyzed. The lifetime prediction accuracy of a new proposed model was compared to the classic FALLOU, SIMONI/RAMU and CRINE lifetime model. Results show that the AC breakdown strength and lifetime of the XLPE samples increase slowly at low temperatures (40-65°C) and decrease rapidly at high temperatures (65-85°C). The lifetime prediction error of the classic FALLOU, SIMONI/RAMU and CRINE models present that their fit goodness cannot meet the accuracy requirement. The new lifetime model using stepwise regression method could optimize the combination of variables, which considers the coupling effect of electrical and thermal stress. The evaluation error of the new proposed model is better than the FALLOU, SIMONI/RAMU and CRINE model, which is suitable for analyzing the lifetime of the AC 500 kV XLPE submarine cable insulation material.

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Electrical Breakdown Characteristics and Testing of High Voltage XLPE and EPR Insulated Cables

Cited by 33 publications

References 3 publications

Long-term electrical performance and life model fitting of XLPE and EPR insulated cables

Long-term electrical performance and life model fitting of XLPE and EPR insulated cables

Influence of high electrical fields on ageing and polarization properties of polyethylene

Electro-thermal breakdown measurement of 500 kV cross-linked polyethylene submarine cable insulation material and its lifetime model analysis

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