Frequency and Time Domain Responses of Cross-Bonded Cables

Lafaia, Isabel; Mahseredjian, Jean; Ametani, Akihiro; Barros, Maria Teresa Correia de; Koçar, Ilhan; Fillion, Yannick

doi:10.1109/tpwrd.2017.2734891

Cited by 18 publications

(5 citation statements)

References 32 publications

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“…The screen conductors are cross-bonded at the end of each minor section (every 1 km) and they are grounded at the ends of each major section, which is made of three minor sections. A detailed model of each cross-bonding was applied in the Dutch grid model as a discrete representation of each minor section is the most accurate way of modelling [28]. The bonding wire and grounding impedance are represented by 1 µH inductances for cross-bonding joints, 10 µH inductances for groundings at straight through joints (connection of two major sections), and 1 mΩ resistances for groundings at cable terminations [29].…”

Section: Grid Modelingmentioning

confidence: 99%

“…According to the modal decomposition theory, a cross-bonded three-phase single-core cable system can be decomposed into six modes: one coaxial mode, two inter-phase modes, two inter-sheath modes, and one ground mode (in contrast to only one inter-phase mode and one earth-return mode for an OHL). Each mode has its own attenuation constant and propagation velocity [28], [31]- [33]. The wave propagation velocity in the cables is much lower than that of OHLs as the coaxial mode is the fastest with the propagation velocity of 0 √ m/s, where and are respectively the relative permittivity and permeability (compared to 0 =3×10 8 m/s for OHLs).…”

Section: A Effect Of Cable Lengthmentioning

confidence: 99%

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Statistical Analysis of Energization Overvoltages in EHV Hybrid OHL–Cable Systems

Khalilnezhad

Popov

Sluis

et al. 2018

IEEE Trans. Power Delivery

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Energization overvoltages are among the severest overvoltages stressing insulations of EHV power system components. Since these overvoltages have a statistical nature, the insulation level should be determined with the use of a statistical approach by which the distribution of overvoltages is calculated. Literature has properly studied the distribution of energization overvoltages in purely OHL or cable systems, but such a study is not available for hybrid systems consisting of both OHLs and cables. It is expected that the overvoltage distributions change substantially when both OHLs and cables are used in a transmission line. This paper tackles this issue by analyzing the overvoltage distributions due to the energization of a 380 kV hybrid OHL-Cable circuit, in which the cable length is variable. The study includes various sensitivity analyses to find out the impact of system parameters and topology on overvoltages. By the statistical analysis, it has been discovered that energization overvoltages of a hybrid OHL-Cable circuit are higher than those of a fully-cable circuit and very likely lower than those of a fully-OHL circuit with the same transmission lengths.

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Section: Grid Modelingmentioning

confidence: 99%

Section: A Effect Of Cable Lengthmentioning

confidence: 99%

Statistical Analysis of Energization Overvoltages in EHV Hybrid OHL–Cable Systems

Khalilnezhad

Popov

Sluis

et al. 2018

IEEE Trans. Power Delivery

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“…Besides the efforts to model CBC networks [2][3][4][5][6], few reports can be observed about the topic of partial discharge detection in such cable networks. Nevertheless, these studies have been mostly concentrated on just a single PD source creating a single PD pulse rather than a train of positive and negative pulses.…”

Section: Introductionmentioning

confidence: 99%

Online localization and phase selection of multiple partial discharge sources in cross‐bonded cable networks

Shahinfar

Shahrtash

2022

IET Generation Trans & Dist

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This paper presents a novel rule-based method for online localization and phase selection of multiple partial discharge (PD) sources in cross-bonded cable (CBC) networks by simultaneous measurements of PD pulse trains at all link boxes. The proposed method detects PD defective cable sections (localization task) and their corresponding defective phases (phase selection task) regardless of the number of PD sources inside the CBC network and their severity differences. For the first time, the proposed method is capable of detecting more than one PD source by analysing PD pulse trains. Numerous simulations of different case studies performed in EMTP RV software indicate highly accurate performance of the proposed method even at high noise levels.

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“…In terms of operating overvoltage generation mechanism, N. Alatawneh and I. Lafaia et al studied the influence of line cable parameters on the frequency and time domain characteristics of system overvoltage. Long cables are the key factor affecting the high-frequency characteristics of overvoltage [3][4][5]. A. Theocharis and M. Popov believed that line distributed capacitance becomes an important factor affecting the transient process of overvoltage [6].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Experimental Analysis of Overvoltage and Inrush Current Characteristics of the Electric Rail Traction Power Supply System

Sun

Fan

et al. 2022

Energies

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High-speed EMUs (electric multiple-units) frequently pass through the phase-separation zone during operation. Overvoltage generated during the operation of the vehicle-mounted circuit breaker has a long duration and high waveform steepness, which accelerates the service life of the vehicle-mounted equipment and is likely to cause insulation failures. For the above-mentioned problems, the operating overvoltage characteristics of high-speed EMU were obtained by traction substation-catenary-EMUs system (SCES) analysis and experiments, thus deriving the influences of the closed phase angle and the residual magnetism of the vehicle-mounted transformer on operating overvoltage. The results showed that the voltage phase of the catenary significantly affected the operating overvoltage, and the closed switching overvoltage was small at 0–40°, 140–210° and 320–350°. The voltage on the primary side of the vehicle-mounted transformer was 60.78 kV, with the transient impact of high-frequency oscillation overvoltage of 22.71 kV, and an initial period of oscillation of 0.01 ms. Then, the period became longer, and it took 0.5 ms for the high-frequency oscillation from attenuation to disappearance. Finally, a scheme of series reactance suppression devices was proposed to protect vehicle-mounted voltage transformers. This work is to provide data support for the insulation design and system protection of a traction power supply system.

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Frequency and Time Domain Responses of Cross-Bonded Cables

Cited by 18 publications

References 32 publications

Statistical Analysis of Energization Overvoltages in EHV Hybrid OHL–Cable Systems

Statistical Analysis of Energization Overvoltages in EHV Hybrid OHL–Cable Systems

Online localization and phase selection of multiple partial discharge sources in cross‐bonded cable networks

Modeling and Experimental Analysis of Overvoltage and Inrush Current Characteristics of the Electric Rail Traction Power Supply System

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