The Analysis and Simulation of Voltage Distribution over String Insulators Using Matlab/Simulink

Izgi, Ercan; Inan, A.; Ay, Selim

doi:10.1080/15325000701548923

Cited by 12 publications

(4 citation statements)

References 2 publications

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“…String insulators are classified into disc, cap-pin and suspension types. The high mechanical strength, easy installation and low cost of string insulators make them widely used in overhead lines [29]. The suspension-type glass insulator string of 500 kV DC towers, with its dimensions, is shown in Figure 6a.…”

Section: Modeling and Simulationsmentioning

confidence: 99%

Evaluation of the Transient Overvoltages of HVDC Transmission Lines Caused by Lightning Strikes

et al. 2022

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High-voltage direct-current (HVDC) transmission systems are considered an outstanding solution due to high electrical losses emerging from long-distance transmission. However, HVDC transmission lines (TLs) are vulnerable to lightning strikes. In this work, the Yunnan-Guizhou 500 kV HVDC transmission system is used as a case study to evaluate the impact of lightning strikes on DC-TL overvoltages, as no research studies have been conducted to assess the lightning transient behavior of DC-TLs. A comprehensive investigation of the 500 kV DC-TL transient performance during lightning strikes is performed, taking into account different technical aspects that have not been studied in detail by previous researchers. Additionally, analysis of the back-flashover phenomenon has not been conducted well in previous work, and results on the effect of changing the lightning strike current peak and tower grounding resistance on shielding-failure flashover are quite limited. The distributed-parameter model is used to represent the DC-TL using the electromagnetic transients program (EMTP), considering real parameters of shielding wires and DC towers to study the lightning impact in the case of back-flashover and shielding-failure phenomena. Lightning strike is applied to the shielding wire, and the impact of increasing the peak value of lightning current is investigated on the back-flashover occurrence. Moreover, the influence of tower grounding resistance variation on the transient overvoltages across the tower body and back-flashover phenomenon is evaluated. From the simulation results, increasing the lightning current peak and grounding resistance results in higher overvoltages across the tower body, which increases the probability of back-flashover. Additionally, the shielding failure of the TL is assumed, and the variation impact of the lightning current peak and grounding resistance on shielding-failure flashover is investigated. The results show that the impact of the lightning current peak has a more significant impact than the grounding resistance in the case of shielding-failure flashover.

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Section: Modeling and Simulationsmentioning

confidence: 99%

Evaluation of the Transient Overvoltages of HVDC Transmission Lines Caused by Lightning Strikes

et al. 2022

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“…The age stations were spoken to as voltage sources while the transmission lines were spoken to by their proportionate protections and reactance. Estimating apparatuses for example ammeter, wattmeter and voltmeter just as the demonstrated SVC were fused in the model [12].…”

Section: A Modeling Of the Nigerian 330kv Power System Using Simulinmentioning

confidence: 99%

Stress Control Optimization using Particle Swarm Optimization Algorithm

Parashar,

Pachori

2020

IJEAT

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Confined field upgrade, particularly in the zone near the high voltage potential and ground potential will quicken the corruption and in this way causing pre-developed disappointment of the protecting material. Other than electrical field upgrade, mechanical stresses and natural impacts additionally influence the presentation of the high voltage overhead separators. Therefore, multi-feature approaches are required to improve the HV separators execution and unwavering quality over their administration life. In the subsequent segment, the current pressure control techniques that incorporate crown ring, consolidated protection get together and end-fitting plan are checked on.

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“…Mono kristal malzemeden yapılan FV paneller sıcaklığın yüksek olduğu bölgelerde polikristalden yapılan güneş panellerine göre daha fazla enerji üretirler. Küçük alanlarda daha fazla enerji üretirler (Xiao, Edwin, Spagnuolo &GJatsvevich,2013;Hirose, Osaki, Kuroki & Numa, 2010;İzgi, İnan & Ay, 2008;Nou, Chauvin, Thil & Grieu, 2013;Rustemli & Dincer, 2011;Uno & Kukita, 2017) Matlab/Simulink yazılım programı ile FV sistemin eşdeğeri oluşturulmuştur. Ayrıca değişik sıcaklık ve güneş ışınımı değerleri için PV sistemin çıkış gücü ölçülmüştür.…”

Section: Fv Panelleri̇n çIkiş Gücünün Anali̇ti̇k İfadesi̇ni̇n Bulunmasiunclassified

Mathematical Modeling and Simulation of the Photovoltaic System's Output Power depends on Temperature and Irradiance

Adak¹,

Yılmaz²

2019

Uluslararası Muhendislik Arastirma Ve Gelistirme Dergisi

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ÖzFotovoltaik (FV) sistemlerin çıkış gücü güneş ışınımı ve sıcaklık değerlerine bağlıdır. Bu makalede, FV sisteminin çıkış gücünün sıcaklık ve güneş ışınımına bağlı değişimi incelenmiştir. Ayrıca, bu çalışmada FV panellerinin yanında FV dizininin çalışma prensibi özetlemiştir. Şebekeden bağımsız FV sistem Matlab/simülasyon programı kullanılarak modellenmiş ve bu çalışmada detaylı çalışması gerçekleştirilmiştir. Ayrıca, farklı sıcaklık ve ışınım değerleri için FV sisteminin çıkış gücü analiz edilmiştir. FV panellerde kısmi gölgelenme durumları için sistemin simulink eşdeğeri oluşturuldu. Kısmi gölgeli durumlara ait I-V ve P-V eğrileri bulundu. Sonuç olarak, FV sisteminin çıkış gücünün analitik ifadesi, Sosyal Bilimler İçin İstatistik Programı (SPSS) kullanılarak bulunmuştur. Anahtar Kelimeler "FV panel, SPSS istatistik programı, ışıma & sıcaklık irradiance&temperature, aktif güç, şebekeden bağımsız FV sistem" AbstractThe output power of photovoltaic (PV) systems depends on solar radiation and temperature. In this article, the change of output power of PV system is examined depens on temperature and solar irradiance. Furthermore, this study out lines the working principle of PV panel as well as PV array. Off-grid PV system is modeled by using a Matlab/simulation program and detail study has been carried out in thiswork. Besides, Output power of PV system was analyzed for different temperature and irradiance values. Simulink equivalent of the PV system was created for partial shading on PV panels. I-V and P-V curves were found for partial shaded conditions. As a result, analytical expression of output power of PV system was found by a is statistical package for the social sciences (SPSS) program.

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The Analysis and Simulation of Voltage Distribution over String Insulators Using Matlab/Simulink

Cited by 12 publications

References 2 publications

Evaluation of the Transient Overvoltages of HVDC Transmission Lines Caused by Lightning Strikes

Evaluation of the Transient Overvoltages of HVDC Transmission Lines Caused by Lightning Strikes

Stress Control Optimization using Particle Swarm Optimization Algorithm

Mathematical Modeling and Simulation of the Photovoltaic System's Output Power depends on Temperature and Irradiance

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