TY - JOUR AU - BAL, Semih AU - Tamus, Zoltán Ádám TI - A Method for Assessing the Degradation of PVC-Insulated Low-Voltage Distribution Cables Exposed to Short-Term Cyclic Aging JF - ELECTRONICS (SWITZ) VL - 13 PY - 2024 IS - 6 PG - 20 SN - 2079-9292 DO - 10.3390/electronics13061085 UR - https://m2.mtmt.hu/api/publication/34741724 ID - 34741724 N1 - Export Date: 5 April 2024 Correspondence Address: Tamus, Z.Á.; Department of Electric Power Engineering, Hungary; email: tamus.adam@vik.bme.hu AB - The distribution grid comprises cables with diverse constructions. The insulating material used in low-voltage (LV) distribution cables is predominantly PVC. Furthermore, the presence of cables with different structures in the grid poses challenges in detecting the aging of the cable network. Finding a universal and dependable condition-monitoring technique that can be applied to various types of cables is indeed a challenge. The diverse construction and materials used in different cables make it difficult to identify a single monitoring approach that can effectively assess the condition of all cables. To address this issue, this study aims to compare the thermal aging behavior of different LV distribution cables with various structures, i.e., one cable contains a PVC belting layer, while the other contains filler material. The growing adoption of distributed generation sources, electric vehicles, and new consumer appliances in low-voltage distribution grids can lead to short, repetitive overloads on the low-voltage cable network. Hence, these cable samples were exposed to short-term cyclic accelerated aging in the climate chamber at 110 °C. The cable’s overall behavior under thermal stress was evaluated through frequency and time domain electrical measurements (including tan δ and extended voltage response) and a mechanical measurement (Shore D). The tan δ was measured in the frequency range of 20 Hz–500 kHz by using the Wayne-Kerr impedance analyzer. The extended voltage response measurement was conducted using a C# application developed in-house specifically for laboratory measurements in the .NET environment. The study observed a strong correlation between the different measurement methods used, indicating that electrical methods have the potential to be adopted as a non-destructive condition-monitoring technique. LA - English DB - MTMT ER - TY - JOUR AU - BAL, Semih AU - Tamus, Zoltán Ádám TI - Analyzing the Impact of Short-Term Cyclic Thermal Ageing on PVC Insulated Low Voltage Samples with Polarization/Depolarization Current Measurement JF - ACTA POLYTECHNICA HUNGARICA J2 - ACTA POLYTECH HUNG VL - 20 PY - 2023 IS - 9 SP - 77 EP - 91 PG - 15 SN - 1785-8860 DO - 10.12700/APH.20.9.2023.9.5 UR - https://m2.mtmt.hu/api/publication/34221185 ID - 34221185 N1 - Project no. 142814 has been implemented with the support provided by the Ministry of Culture and Innovation of Hungary from the National Research, Development and Innovation Fund, financed under the FK_22 funding scheme. LA - English DB - MTMT ER - TY - CONF AU - BAL, Semih AU - Tamus, Zoltán Ádám TI - The Effect of Short-Term Cyclic Thermal Stress on Dielectric Parameters on Low Voltage Distribution Cables with Different Structure in Smart Grid Related Environment T2 - Jicable'23 - International Conference on Insulated Power Cables PY - 2023 SP - P2-10 PG - 6 UR - https://m2.mtmt.hu/api/publication/34141808 ID - 34141808 LA - English DB - MTMT ER - TY - CHAP AU - BAL, Semih AU - Jasim, A.G.N.A. AU - Tamus, Zoltán Ádám TI - Analyzing the Effect of thermal Ageing on Low Voltage Distribution Cables in Relation to their Structure T2 - 2023 INSUCON - 14th International Electrical Insulation Conference (INSUCON) PY - 2023 SP - 209 EP - 214 PG - 6 UR - https://m2.mtmt.hu/api/publication/34037986 ID - 34037986 LA - English DB - MTMT ER - TY - JOUR AU - BAL, Semih AU - Tamus, Zoltán Ádám TI - Investigation of the Structural Dependence of the Cyclical Thermal Aging of Low-Voltage PVC-Insulated Cables JF - SYMMETRY (BASEL) J2 - SYMMETRY-BASEL VL - 15 PY - 2023 IS - 6 SP - 1186 SN - 2073-8994 DO - 10.3390/sym15061186 UR - https://m2.mtmt.hu/api/publication/34004224 ID - 34004224 N1 - Funding Agency and Grant Number: National Research, Development, and Innovation Fund of Hungary [123672]; [KNN_16] Funding text: Project no. 123672 was implemented with support provided by the National Research, Development, and Innovation Fund of Hungary, financed under the KNN_16 funding scheme. AB - The increasing penetration of distributed generation sources in low-voltage distribution grids, electric vehicles, and new appliances from the consumer side can generate short repetitive overloads on the low-voltage cable network. This work investigates the change in the dielectric properties of low-voltage cable insulation caused by short-term overloads, examining how the cable structure affects the dielectric characteristics of the cable specimens in the case of cyclic short-term thermal aging. PVC-insulated low-voltage cable samples were exposed to an accelerated aging test in a temperature-controlled oven after changing their structures by removing different layers. Three aging cycles, each of six hours, were applied to the samples. After each cycle, the tan δ and capacitance were measured by an Omicron DIRANA Dielectric Response Analyzer in the laboratory at room temperature 24 ± 0.5 °C. Furthermore, the polarization and depolarization currents were also studied. The results show that changing the cable structure impacts the dielectric parameters; in particular, the effect of the belting layer is significant. From the point of view of aging, the PVC belting layer protects the diffusion of the plasticizers of the inner structure. The findings of the study show that an asymmetric aging phenomenon can be observed in different polymeric components of the cables, even though the cables were aged in an air-circulated oven ensuring a homogeneous temperature distribution in the samples. LA - English DB - MTMT ER - TY - CHAP AU - BAL, Semih AU - Tamus, Zoltán Ádám ED - Molnár, György TI - Analyzing the Effect of Thermal Stress on Dielectric Parameters of PVC Insulated Low Voltage Cable Sample T2 - IEEE 5th International Conference and Workshop in Óbuda on Electrical and Power Engineering (CANDO-EPE 2022) PB - IEEE CY - Budapest SN - 9798350346190 PY - 2022 SP - 000067 EP - 000072 PG - 6 DO - 10.1109/CANDO-EPE57516.2022.10046360 UR - https://m2.mtmt.hu/api/publication/33733404 ID - 33733404 N1 - Correspondence Address: Bal, S.; Budapest University of Technology and Economics, Hungary; email: semihbal@edu.bme.hu LA - English DB - MTMT ER - TY - CHAP AU - BAL, Semih AU - Tamus, Zoltán Ádám ED - Pavel, Trnka ED - Václav, Mentlík ED - Alena, Pietriková TI - Investigation of Effects of Thermal Ageing on Dielectric Properties of Low Voltage Cable Samples by using Dielectric Response Analyzer T2 - 2022 International Conference on Diagnostics in Electrical Engineering (Diagnostika) PB - IEEE CY - Pilsen SN - 9781665480826 PY - 2022 SP - 184 EP - 189 PG - 6 DO - 10.1109/Diagnostika55131.2022.9905157 UR - https://m2.mtmt.hu/api/publication/33127528 ID - 33127528 N1 - Funding Agency and Grant Number: National Research, Development and the Innovation Fund of Hungary [123672, KNN_16] Funding text: Project no. 123672 has been implemented with the support provided by the National Research, Development and the Innovation Fund of Hungary, financed under the KNN_16 funding scheme. AB - Cables are arguably one of the main components of low voltage distribution systems. It is known that the majority of low voltage cable network was built some decades ago. The cables are exposed to different stresses by then. Due to the stresses, the cable insulation is damaged, which leads to failures. In this work, 0,6/1kV SZRMtKVM-J 4 x 6 mm PVC insulated cable samples were subjected to 3 rounds thermal stress at 110 degrees C. The duration of each round is 6 hours. The effect of thermal stress on tan delta and capacitance is investigated. Dirana Dielectric Insulation Analyzer by Omicron is used. The preliminary results of the ongoing laboratory experiment are presented in this paper. LA - English DB - MTMT ER - TY - JOUR AU - BAL, Semih AU - Tamus, Zoltán Ádám TI - Investigation of Effects of Short-term Thermal Stress on PVC Insulated Low Voltage Distribution Cables JF - PERIODICA POLYTECHNICA-ELECTRICAL ENGINEERING AND COMPUTER SCIENCE J2 - PERIOD POLYTECH ELECTR ENG COMP SCI VL - 65 PY - 2021 IS - 3 SP - 167 EP - 173 PG - 7 SN - 2064-5260 DO - 10.3311/PPee.16485 UR - https://m2.mtmt.hu/api/publication/32002228 ID - 32002228 N1 - Export Date: 15 June 2022 Correspondence Address: Tamus, Z.Á.; Department of Electric Power Engineering, Egry József Str. 18, Hungary; email: tamus.adam@vet.bme.hu AB - The main aim of this study is to investigate the ageing process of Low Voltage cables in smart grid. In addition, the behavior of ageing phenomenon has also been investigated. The Low Voltage cable networks were developed decades ago and it is of utmost importance to make comprehensive study over the health of existing Low Voltage cable networks so as to avoid any unprecedented damage. Incessantly increasing energy demand and distributed generation makes it among top priorities to investigate the ageing process of Low Voltage cables. The effect of thermal stress over dielectrics was investigated as a part of research. To be able to determine these effects the measurements were done on PVC insulated (both cores and jacket) cable by measuring tanδ (dissipation factor), capacitance, return voltage of cable and hardness of insulations. In order to determine thermal effects on dielectric, the measurements were done in different ageing temperature ranges i.e. at 110 °C, 125 °C and 140 °C. The results of this study support the expectations. The mechanical and the electrical parameters of cable insulation are affected by thermal stress. The dissipation factor and the hardness are increased while the decay voltage slope ( Sd ) is decreased by ageing. LA - English DB - MTMT ER - TY - JOUR AU - Csányi, Gergely AU - BAL, Semih AU - Tamus, Zoltán Ádám TI - Dielectric Measurement Based Deducted Quantities to Track Repetitive, Short-Term Thermal Aging of Polyvinyl Chloride (PVC) Cable Insulation JF - POLYMERS J2 - POLYMERS-BASEL VL - 12 PY - 2020 IS - 12 SP - 2809 SN - 2073-4360 DO - 10.3390/polym12122809 UR - https://m2.mtmt.hu/api/publication/31675116 ID - 31675116 N1 - Cited By :10 Export Date: 9 June 2022 Correspondence Address: Tamus, Z.Á.; Department of Electric Power Engineering, Hungary; email: tamus.adam@vet.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Afia, Ramy Saad Abdelatty AU - Mustafa, Ehtasham AU - BAL, Semih AU - Tamus, Zoltán Ádám TI - Investigating the Complex Permittivity of Low Voltage Power Cables Under Different Stresses JF - IFIP ADVANCES IN INFORMATION AND COMMUNICATION TECHNOLOGY J2 - IFIP ADV INFO COMMUNIC TECHN VL - 577 PY - 2020 SP - 319 EP - 327 PG - 9 SN - 1868-4238 DO - 10.1007/978-3-030-45124-0_30 UR - https://m2.mtmt.hu/api/publication/31295005 ID - 31295005 LA - English DB - MTMT ER -