Polymeric HVDC Cable Design and Space Charge Accumulation. Part 1: Insulation/Semicon Interface

Fabiani, Davide; Montanari, Gian Carlo; Laurent, Christian; Teyssèdre, G.; Morshuis, P.H.F.; Bodega, R.; Dissado, L.A.; Campus, A.; Nilsson, U.H.

doi:10.1109/mei.2007.4389975

Cited by 188 publications

(90 citation statements)

References 20 publications

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“…In the above results, we have shown that heterocharge may build-up within the XLPE. Such behavior is also reported in previous studies-see e.g., [8,9] where it is shown also that the semiconductor may be influential in the build-up of such heterocharges. The heterocharge has been reproduced in those models as the result of the formation of deep trap levels in front of the electrodes where (electronic) charges would be extracted [29], of the formation of a barrier to extraction, or of the transport of ionic species [30].…”

Section: Discussionsupporting

confidence: 87%

“…The contact between dielectrics of different natures, in particular in accessories, coupled to non-linear effects, renders the field distribution tricky to evaluate in service [8,9]. To alleviate this issue, specific measurement techniques can be implemented for field distribution estimation through space charge density distribution, which are pertinent for insulation design [10].…”

Section: Introductionmentioning

confidence: 99%

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Maxwell–Wagner Effect in Multi-Layered Dielectrics: Interfacial Charge Measurement and Modelling

Teyssèdre

Roy

et al. 2017

Technologies

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Abstract:The development of high voltage direct current (HVDC) technologies generates new paradigms in research. In particular and contrary to the AC case, investigation of electrical conduction is not only needed for understanding the dielectric breakdown but also to describe the field distribution inside the insulation. Here, we revisit the so-called Maxwell-Wagner effect in multi-layered dielectrics by considering on the one hand a non-linear field dependent model of conductivity and on the other hand by performing space charge measurements giving access to the interfacial charge accumulated between different dielectrics. We show that space charge measurements give access to the amount of interfacial charge built-up by the Maxwell-Wagner effect between two dielectrics of different natures. Measurements also demonstrate that the field distribution undergoes a transition from a capacitive distribution to a resistive one, under long lasting stress.

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Section: Discussionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Maxwell–Wagner Effect in Multi-Layered Dielectrics: Interfacial Charge Measurement and Modelling

Teyssèdre

Roy

et al. 2017

Technologies

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“…The PEA system with curved ground electrode, transducer and acoustic absorber block − implemented and used by various R&D teams in the world − has shown excellent performances on cable models of various sizes, even in the presence of multiple interfaces [29][30][31][32][33]. Other have successfully used a modified version of the PEA cell with curved ground electrode, transducer and absorber, with slightly different electrical connections from the HV pulse source to the outer semicon and the metallic shield of the cable (more details are omitted [2]).…”

Section: Pulse-electro Acoustic (Pea) Methodsmentioning

confidence: 99%

“…-a 6-hour poling time under both positive and negative voltage has been selected, since either 3 hours [14][15][16], or 10,000 seconds, or a few hours appear in many reference literature papers as either common poling times, ormore importantly -as times for the stabilization of charge and field profiles in HVDC insulation that is considered satisfactory [11][12][13][14][15][16][17][18][29][30][31][32][33]: for instance, see -a 2-hour depolarization time has been selected after poling with both positive and negative voltage, since in the literature depolarization times range from 1 to 3 hours as the typical times for the depletion of shallower charge traps;…”

Section: Recommended Protocol: the First Proposal And Its Limitsmentioning

confidence: 99%

A protocol for space charge measurements in full-size HVDC extruded cables

Mazzanti

Chen

Fothergill

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent repository link ABSTRACT This position paper, prepared by the IEEE DEIS HVDC Cable Systems TechnicalCommittee, illustrates a protocol recommended for the measurement of space charges in full-size HVDC extruded cables during load cycle qualification tests (either prequalification load cycles or type test load cycles). The protocol accounts for the experimental practices of space charge measurements in the thick insulation of coaxial cables in terms of poling time, depolarization time, heating and cooling of specimens, as well as for the experience gained very recently from such kind of measurements performed in the framework of qualification tests relevant to ongoing HVDC cable system projects. The goal of the protocol is not checking the compliance with any maximum acceptable limit of either space charge or electric field. Rather, this protocol aims at assessing the variation of the electric field profile in the cable insulation wall during poling time at the beginning and at the end of load cycle qualification tests for full-size HVDC extruded cables. Indeed, in the design stage the electric field distributions are determined by the cable geometry and by temperature gradient in the insulation. Thus, the design is based on macroscopic parameters conductivity and permittivity and how they depend upon temperature. Any disturbance of the electric field due to space charge accumulation will only be revealed during space charge measurements either in as-manufactured state or in the aged state after load cycle qualification tests.

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“…The injected charge carriers are expected to have the same polarity of the related electrode, i.e., positive charges are injected from the anode, and negative charges are injected from cathode, which is called homo-charges. It has also been proven that the charge injection process is highly related to the effects caused by the semiconductor screen, i.e., the characteristics of semiconductive materials and the combination of different types of semiconductive materials and dielectric materials can improve the threshold for space charge injection while reducing the amount of accumulated charges under certain environmental conditions [80]. On the other hand, the charge carriers generated by the ionization process, such as XLPE by-products, could be extracted by the electrodes.…”

Section: B Space Charge Effects In Hvdc Cablesmentioning

confidence: 99%

Review of high voltage direct current cables

Chen

Hao

et al. 2015

CSEE Power and Energy Syst.

209

119

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Abstract-Increased renewable energy integration and international power trades have led to the construction and development of new HVDC transmission systems. HVDC cables, in particular, play an important role in undersea power transmission and offshore renewable energy integration having lower losses and higher reliability. In this paper, the current commercial feasibility of HVDC cables and the development of different types of HVDC cables and accessories are reviewed. The non-uniform electric field distribution caused by the applied voltage, temperature dependent conductivity, and space charge accumulation is briefly discussed. Current research in HVDC cable for higher operation voltage level and larger power capacity is also reviewed with specific focus on the methodologies of space charge suppression for XLPE extruded cables.

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Polymeric HVDC Cable Design and Space Charge Accumulation. Part 1: Insulation/Semicon Interface

Cited by 188 publications

References 20 publications

Maxwell–Wagner Effect in Multi-Layered Dielectrics: Interfacial Charge Measurement and Modelling

Maxwell–Wagner Effect in Multi-Layered Dielectrics: Interfacial Charge Measurement and Modelling

A protocol for space charge measurements in full-size HVDC extruded cables

Review of high voltage direct current cables

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