Special Issue "Design and Testing of Power Cable System"
Deadline for manuscript submissions: 30 June 2020.
Interests: power cables; distributed power generation; smart grids; substation protection; cable sheathing; power distribution faults; power system faults; power system interconnection; power system management; power system protection
Special Issues and Collections in MDPI journals
Interests: power cables; dielectrics materials; partial discharges measurements; space charge measurements; PEA method, polarity reversal; transient overvoltage; cable sheathing; power distribution faults; power system faults; power system interconnection
Interests: power cables; dielectrics materials; space charge measurements; PEA method; partial discharges measurements; polarity reversal; transient overvoltage; cable sheathing; power distribution faults; power system faults; power system interconnection
The substantial growth of cable HV interconnections has prompted researchers to investigate the degradation factors of the dielectric materials used in these systems. Dielectrics in AC and DC cables experience ageing phenomena that are worth of investigation due to the high costs associated to the failures of such infrastructures. In particular, HVDC systems early diagnosis poses a great challenge due to the lack of standardization and consolidated technologies for testing. As is well known, the space charge accumulation and the partial discharge (PD) phenomena play an important role in DC cables’ dielectrics ageing. For this reason, several measurement techniques were developed in order to monitor these phenomena. For instance, the Pulsed Electro Acoustic (PEA) method is one of the main techniques used to measure the space charge. Despite its wide use, the cited technique is destructive, and several technical issues are still present during testing, e.g., the attenuation of the charge signals and the presence of reflected signals in the output charge profile. Therefore, solutions regarding existing space charge measurement (like the Thermal Step Method or PEA) to improve the output charge profile and avoid cables destruction are strongly encouraged. Moreover, the measurement of the PD phenomenon under distorted waveforms is considered of great interest. This Special Issue welcomes studies on the state of the art of new methodologies for cable fault and pre-fault analysis, PD analysis in HVDC cables, innovative cables design, and possible changes of cables structures with the aim to improve and facilitate PEA and PD measurements. Apart from original research articles related to the topic, studies on the effect of the polarity reversal and transient overvoltage phenomena in the lifetime of power cables are also welcome. Finally, due to their ease of use, wireless AC PD detection methods, as well as fault detection and localization approaches, will be considered of interest.
Prof. Dr. Eleonora Riva Sanseverino
Prof. Dr. Pietro Romano
Dr. Antonino Imburgia
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.
- power cables design
- AC and DC partial discharge analysis
- wireless partial discharge analysis
- fault analysis
- HVDC test
- HVAC test
- space charge
- partial discharge
- PEA method
- TSM method
- polarity reversal
- transient overvoltage
- power cable
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Modeling and Simulation of the Electro-Quasistatic Field in HVDC Cable Systems
Authors: Christoph Jörgens; Markus Clemens
Affiliation: University of Wuppertal, Germany
Abstract: High Voltage Direct Current (HVDC) cable systems have several advantages in comparison to High Voltage Alternating Current (HVAC), w.r.t. long distance transmission and transmitted power. The insulation materials of such cable systems are governed by a nonlinear electric field and temperature dependent electric conductivity. With a constant applied voltage, space charges accumulate within the insulation and result in a slowly time varying electric field, until a steady state configuration is reached. Numerical simulations are a powerful tool to determine the corresponding electric field distribution in the insulation. The obtained simulation results can be used for the design process to ensure the reliability of HVDC cable systems. This work gives a review about the effective mechanisms, their descriptions and the numerical simulation of the time varying electric field distribution within HVDC cable insulations, using conductivity based cable models. Different conductivity models are presented and the corresponding numerical simulations are compared against analytic approximations and measurements. Using recently improved conductivity based cable models, simulation results compare well against time varying and stationary reference results of electric field and space charge distributions. Furthermore, the accuracy and the computation time of different numerical computation techniques are compared e.g. in cable joints that consists multiple dielectrics and resistive “field grading materials” (FGM), where unstable electric field values may be computed during the conventional explicit time integration of the slowly varying electric field distributions. Considering the ambient environment of a HVDC cable, within a coupled electro-thermal field simulation the effect of the environment on the resulting electric field distribution can be determined. For the drying process of the soil accelerated by the electric field and the temperature a special case of the electro-quasistatic field is formulated. This model allows to consider the effect of electro-osmosis at HVDC ground electrodes, where the earth soil dries out and changes its electric conductivity and electric field distribution also at the surface level.