Publication: The effect of dc voltage pre-stress on the breakdown voltage of air under composite dc and li voltage and test circuit: Design and application
Loading...
Files
Date
2022-02-01
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.The use of HVDC systems is increasing in number due to technological innovations, increasing power capacity and increasing customer demand. The characteristics of insulation systems under composite DC and LI voltage must be examined and clarified. In this study, firstly, experimental circuits were designed to generate and measure composite DC and LI high voltage using a simulation program. The coupling elements used were chosen according to simulation results. Afterward, experimental circuits were established in the laboratory according to the simulation results of the designed experimental circuit. Then, breakdown voltages under composite DC and LI voltage for less uniform and non-uniform electric fields were measured with four different electrode systems for positive and negative DC voltage pre-stresses with different amplitudes. The 50% breakdown voltage was calculated using the least-squares method. Finally, 3D models were created for the electrode systems used in the experiments using the finite element method. The efficiency factors of electrode systems calculated with the FEM results were correlated with the experimental breakdown voltage results. Thus, the breakdown behavior of air under bipolar and unipolar composite voltages (CV) was investigated. In conclusion, the experimental results showed that very fast polarity change in bipolar CV causes higher electrical stress compared to unipolar CV.
Description
Keywords
Tarımsal Bilimler, Ziraat, Tarım Makineleri, Tarımda Enerji, Biyoyakıt Teknolojisi, Bilgi Sistemleri, Haberleşme ve Kontrol Mühendisliği, Kontrol ve Sistem Mühendisliği, Sinyal İşleme, Mühendislik ve Teknoloji, Agricultural Sciences, Agriculture, Farm Machinery, Energy in Agriculture, Biofuels Technology, Information Systems, Communication and Control Engineering, Control and System Engineering, Signal Processing, Engineering and Technology, Mühendislik, Bilişim ve Teknoloji (ENG), Mühendislik, OTOMASYON & KONTROL SİSTEMLERİ, MÜHENDİSLİK, ELEKTRİK VE ELEKTRONİK, ENERJİ VE YAKITLAR, Engineering, Computing & Technology (ENG), ENGINEERING, AUTOMATION & CONTROL SYSTEMS, ENGINEERING, ELECTRICAL & ELECTRONIC, ENERGY & FUELS, Renewable Energy, Sustainability and the Environment, Physical Sciences, Fuel Technology, Energy Engineering and Power Technology, Energy (miscellaneous), Control and Optimization, Electrical and Electronic Engineering, breakdown voltage of air, composite voltage, HVDC, lightning impulse, HV test circuit, PERFORMANCE, Breakdown voltage of air, Composite voltage, Lightning impulse, breakdown voltage of air, composite voltage, HVDC, lightning impulse, HV test circuit
Citation
İSPİRLİ M. M., Kalenderli Ö., Seifert F., Rock M., ORAL B., "The Effect of DC Voltage Pre-Stress on the Breakdown Voltage of Air under Composite DC and LI Voltage and Test Circuit: Design and Application", Energies, cilt.15, sa.4, 2022