Title :
Study on the application to traction power supply system of YNvd transformer
Author :
Chen, Minwu ; Li, Qunzhan ; Ma, Qingan ; Liu, Wei
Author_Institution :
Dept. of Electr. Eng., Southwest Jiaotong Univ., Chengdu, China
Abstract :
The YNvd transformer, which is one kind of three-phase three-winding balance transformer and has several properties, can be used in traction power supply system of electric railway. The strict relation of the primary and secondary in the electric transformation is derived with the impedance matching coefficient. The grounding conditions for YNvd transformer´s neutral point and the characteristics of negative phase-sequence are analyzed. The three-phase equivalent models of traction power supply system with comprehensive compensator and filter are presented unified with power system in related analyses. Finally, the calculation equations of the three-phase and two-phase equivalent bus voltage loss are obtained. All these contribute to the future application of YNvd transformer.
Keywords :
earthing; impedance matching; power transformer protection; railway electrification; traction power supplies; transformer windings; YNvd transformer; electric railway; electric transformation; grounding condition; impedance matching coefficient; negative phase-sequence analysis; power system; three-phase bus voltage loss; three-phase three-winding balance transformer; traction power supply system; two-phase equivalent bus voltage loss; Equations; Filters; Grounding; Impedance matching; Integrated circuit modeling; Optical wavelength conversion; Power system analysis computing; Power system modeling; Rail transportation; Traction power supplies; YNvd transformer; electric railway; three-phase equivalent model; voltage loss;
Conference_Titel :
Sustainable Power Generation and Supply, 2009. SUPERGEN '09. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4934-7
DOI :
10.1109/SUPERGEN.2009.5348309
