At present, low power factor, abundant harmonics and negative sequence are the three main characters of electrical railway traction load.
功率因数低、谐波含量大和不对称性是现代电力牵引负荷的三大技术特点。
参考来源 - 一种反馈式无功补偿方案及其应用研究So restriction on harmonic injected into utility is imperative. But characteristics of traction load include single phase, unbalance and random, so harmonic of traction load is also different from harmonic of other load.
但是由于牵引负荷具有单相不对称特性，且波动剧烈，其产生的谐波有别于其它电力用户产生的谐波。
参考来源 - 电气化铁道谐波过程分析与推荐限值制定思路研究·2,447,543篇论文数据，部分数据来源于NoteExpress
电力牵引负荷在电力系统中的分布计算宜采用三相分析法。
The three-phase analysis method should be applied for the distribution calculation of electrical traction load in the electrical system.
牵引负荷的谐波有幅值变化大、相位离散并且其均值与最大值偏离较大的特点。
The electrical traction harmonics have some unique features such as large amplitude range, phase dispersion and severe deviation of the maximum.
电气化铁道牵引负荷是大宗的工业用电部门，因此它是电力系统重要的电能污染源。
Electrified railway's traction load is usually the big consumer for the electric power system, so electrified railway's traction load is the main power quality pollution source.
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