Distribution Calculation of Harmonics and Unbalance in Power System Including Railway Traction Substations

Abstract:

Harmonics and unbalance in Henan power system become more and more serious while a large number of traction substations of high-speed railway are put into operation and traction power increases. In this paper, the distributions of harmonics and unbalance in Henan electric power system are studied. Firstly, three-phase fundamental and harmonic models of the whole system including railway traction substations are built, and a decoupled method of power flow is put forward. Then, the power system harmonic penetration (PSHP) software package is developed, and the power quality of two railway traction substations has been measured. At last, the distributions of harmonics and unbalance of Zhengzhou power network are calculated and compared with the measured results under different traction powers. Some rules of the distributions have been summarized and some advices have been put forward.

• Periodical: Advanced Materials Research (Volumes 433-440)
• Pages: 3470-3478
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.433-440.3470
• Online since: January 2012
• Authors: Jun Yong Wu, Hong Jun Fu, Jian Hua Sun, Xi Lu Zhang, Lu Yu Ji
• Keywords: Harmonics, Three-Phase Model, Traction Substation, Unbalance

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