电铁牵引变电站接入电力系统谐波和负序分析

Harmonic and Negative Sequence Analysis of Electric Railway Traction Transformer Access to Electric Power System

通过某电气铁道工程牵引变电站接入电力系统谐波和负序(基波)的计算分析,介绍了电气铁道牵引站产生并注入系统的谐波电流和引起的三相电压不平衡度的计算方法。针对该电气化铁道工程设计中采用三相变压器或单相变压器的不同方案,对电气铁道牵引站产生并注入系统的谐波电流和引起的三相电压不平衡度进行了计算分析。

According to the sample analysis of electric railway traction transformer access to electric power system, the eaculation method of harmonic current access to the electric power system and the unbalance factor is introduced. As to the different sets of plans for the use of three-phase transformer or single-phase transformer in electric railway program design, the caculation analysis of harmonic current access to the electric power system and unbalance degree is proposed.