Title :
Simulation study on converter transformer saturation characteristics due to GIC
Author :
Ma, Xue Ling ; Wen, Jun ; Liu, Lian Guang ; Wang, Jun ; Wang, Chao
Author_Institution :
Dept. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing, China
Abstract :
The converter transformer saturation model founded in the paper is based on UMEC (Unified Magnetic Equivalent Circuit) theory, which considers core flux and leakage flux uniformly, with high simulation accuracy. Based on the model founded, detailed simulations are made about the converter transformer magnetizing current, the harmonic characteristics of the primary-side and secondary-side current of the converter transformer and the reactive power characteristics by PSCAD simulation software. Finally, this paper presents some cure strategies to inhibit converter transformer DC bias.
Keywords :
CAD; equivalent circuits; power convertors; power transformers; GIC; PSCAD simulation software; UMEC; converter transformer; core flux; geomagnetically induced current; leakage flux uniformly; saturation characteristics; unified magnetic equivalent circuit theory; Circuit faults; Converters; Harmonic analysis; Integrated circuit modeling; Magnetic circuits; Magnetic flux; Power system harmonics; DC bias magnetization; Geomagnetically Induced Current (GIC); High Voltage Direct Current (HVDC); converter transformer; harmonic;
Conference_Titel :
Electricity Distribution (CICED), 2010 China International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4577-0066-8
