This paper presents the influence of three different voltage stabilizers, 4-n-propylbenzoic acid, 2-methoxyphenylboronic and 3-aminobenzoylmethylamide, on insulation properties cross-linked polyethylene (XLPE). The 1 wt % stabilizers are blended with XLPE by a solution method, then samples prepared via hot pressing method. Electrical physicochemical blends analyzed space charge, DC resistivity, breakdown strength, thermally stimulated depolarization current, Fourier transform infrared...

This paper presents an estimate for the influence of service time on conduction current characteristics a 10 kV AC XLPE. The experimental results show that space charge accumulation threshold increases with time. Fourier transform infrared (FT-IR) and differential scanning calorimetry (DSC) experiments increased thermo-oxidative aging reduced crystallinity as increases. in deeper traps XLPE material which can be verified from isothermal surface potential decay experiments. Based results,...

This paper presents the influence of thermal ageing on physico-chemical and electrical properties 500 kV extra high voltage direct current (EHVDC) XLPE cable insulation. EHVDC sections are placed in a oven thermally aged at 106 °C (melting peak temperature) for 250, 1000 h. After ageing, inner, middle outer layers insulation characterized by Fourier transform infrared (FTIR) spectroscopy, oxidation induction time, X-ray diffraction (XRD), space charge, DC conductivity breakdown measurements....

This research investigates the optimal region to achieve balanced thermal and electrical insulation properties of epoxy (EP) under high frequency (HF) temperature (HT) via integration surface-modified hexagonal boron nitride (h-BN) nanoparticles. The effects nanoparticle content on various (DC, AC, frequency) EP are investigated. It is found that nano h-BN addition enhances performance weakens properties. On other side, HF HT stress, presence nanoparticles significantly improves BN/EP...

Abstract Metal tip defect is a typical insulation in gas insulated switchgear (GIS). Simulation research on the under multi‐physical field coupling was conducted order to explore realistic electric distribution. The results of simulation were confirmed by partial discharge experiment. On one hand, influence location and structural parameters distribution investigated established model. other experimental platform built obtain initial voltage this defect. show that presence defects can...

Epoxy resin (EP) insulations are widely considered as potential candidates for various applications. However, it is not suitable high frequency (HF) and temperature (HT) applications due to its low thermal conductivity. This research presents the tuning of electrical properties EP via stoichiometry incorporation surface-modified hexagonal boron nitride (h-BN) nanofillers. In this research, curing agent concentration pure optimized first based on stability sufficiently reliable properties....

Power cables installed underneath the bridge have become vital in cross-sea power transmission system <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">.</i> The design of grounding is a decisive factor which determines safety and reliability these cables. In this paper, nodal admittance matrix cable established considering influence overhead laying condition coupled line model used to improve calculation efficiency. A solution method, can...

This article investigates the effect of different temperatures (30 &#x00B0;C, 50 and 70 &#x00B0;C) on interfacial electrical insulation properties 500 kV high voltage direct current (HVDC) cross-linked polyethylene (XLPE) cable factory joint having roughness levels. The test samples with (&#x0023;80, &#x0023;400, &#x0023;1000, &#x0023;2000, &#x0023;0000) were prepared by surface polishing followed an XLPE injection vulcanization process. At interface, visible microporous defects observed....

Degassing treatment is critical to remove cross-linking by-products in cross-linked polyethylene (XLPE) cable factory joints and prevent early insulation deterioration. In this article, 500-kV high-voltage direct-current (HVDC) joint samples were prepared, the physicochemical temperature-dependent electrical properties of under different degassing times investigated. The results show that prolonged increases crystallinity reduces tensile XLPE samples. without have visible micropores near...

The homo-charges accumulated inside the polymeric insulation of high voltage dc (HVdc) cables increase electrical field beyond uniform value, whereas hetero-charges reduce it. Such uneven distribution is detrimental to HVdc cables' longevity and thus, needs be identified accurately. To this end, article proposes a deep learning (DL) framework for automated detection space charges in cable insulation. cross-linked polyethylene (XLPE) samples were measured under varying electric fields (10–50...

Abstract This paper investigates the influence of voltage stabilizer and nanofiller addition on insulation performance cross‐linked polyethylene (XLPE). The test samples XLPE/stabilizer blends consisting 1 wt% m‐aminobenzoic acid, XLPE nanocomposites 0.5 nano MgO hybrid composite both nanofillers were prepared. Various physicochemical electrical properties measured to analyze prepared samples. obtained results show that deteriorates XLPE. On other hand, proves be suitable for enhancing...

The interface insulation plays a key role in the long-distance high-voltage direct current (HVDC) cables. In this paper, four core–shell ZnO suspensions formed by different alkane coating were prepared for spraying on factory joint interface. chemical, electrical, and simulation studies performed synthesized nanoparticles samples. Results show that alkane-coated exhibits noticeable surface halo thermal weight loss ratio increases with increase of chain. Moreover, sprayed C1-ZnO concentration...

Abstract This paper investigated the influence of three aromatic voltage stabilizers (4‐ n ‐propylbenzoic acid, 2‐methoxyphenylboronic and 3‐aminobenzoylmethylamide) on insulating properties cross‐linked polyethylene (XLPE) at high temperatures for direct current (HVDC) applications. The XLPE blends containing 1 wt% were prepared through a solution‐blending method. addition suppressed space charge inside temperatures. DC conductivity its increased with temperature. blended 4‐ acid was lowest...

Abstract This paper presents electrical and thermal properties of a novel type micro‐nano hybrid composites to be potential for packaging. The contain 20 wt% micro‐aluminium nitride (AlN) with 1, 3, 5 nano‐AlN, respectively. Electrical measurement analysis are used analyze the performances. results show that nano‐AlN in can suppress space charge accumulation near cathode facilitate conversion hetero into homo‐charge accumulations anode. No apparent electric field distortion observed M20N3...

Dielectric response(DR) measurement has been deployed as a non-destructive and potential diagnostic method for moisture or aging condition of power system apparatuses. In order to promote the application DR method, development precise, easy-to-use cost-effective testing devices is an urgent issue, in which accurate acquisition insulation current critical. this paper, device combine time-domain Polarization Depolarization Current(PDC) Frequency-Domain Spectroscopy(FDS), are two major...

Abstract Epoxy resin (EPR) insulations play a vital role in the insulation of modern power electronic equipment owing to their excellent dielectric properties. However, due high‐power density and miniaturization which causes high heat fluxes under voltage high‐frequency stresses, EPR with good thermal properties is urgently needed. In this study, polydopamine functionalized micro‐BN core‐shell nano TiO 2 –SiO particles are dispersed simultaneously improve It revealed that addition micro‐nano...

Three different contents (1, 3, and 5 wt%) of 4-n-propylbenzoic acid as the voltage stabilizer are added to cross-linked polyethylene (XLPE), whereas electrical, mechanical, thermal properties XLPE/stabilizer blends measured. The obtained results show that addition facilitates a reduction in accumulated space charges conduction current improves life exponent conductivity XLPE but negatively affects degree cross-linking. optimal content attain balanced overall is selected by technique for...

Power terminal communication access network (PTCAN) is an important for smart grid applications due to its ability of monitoring and remotely controlling power distribution devices carrying the consumer information. In this paper, a hierarchical genetic algorithm proposed plan optimize Industrial Ethernet based PTCAN. The key idea transform tree-form topology ring-form A depth-first pre-order traversal chromosome initialization method raised in paper planning scheme simplified complexity....