Title :
Study of the simulation of DC traction power supply system based on AC/DC unified Newton-Raphson method
Author :
Liu, Wei ; Li, Qunzhan ; Chen, Minwu
Author_Institution :
Dept. of Electr. Eng., Southwest Jiaotong Univ., Chengdu, China
Abstract :
The modern urban railway traction power supply system is a hybrid AC/DC system. The equivalent 24-pulse rectification is obtained by parallel connection of two 12-pulse uncontrolled rectifiers with 15deg phase shifted. Take 12-pulse uncontrolled rectifier as investigated subject, the operation modes as load current increasing is analyzed in this paper. Rectifier is depicted as a nonlinear electrical element in power flow. A improved unified Newton-Raphson method of urban railway AC/DC system based on rectifier models is proposed to speed up the urban rail traction power flow. The dynamic power and voltage variation of both AC/DC sides along with train running can be achieved. An example problem is provided for comparison. This method is successfully applied in the simulation of practical DC traction power supply system.
Keywords :
Newton-Raphson method; hybrid power systems; power supplies to apparatus; railway electrification; AC-DC unified Newton-Raphson method; DC traction power supply system; hybrid AC-DC system; nonlinear electrical element; urban railway traction power supply system; Equations; HVDC transmission; Load flow; Newton method; Power system modeling; Rail transportation; Rectifiers; System analysis and design; Traction power supplies; Voltage; Newton-Raphson method; dc traction power system; power flow; urban railway transit;
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.2009.5348365
