通过实例计算，分析和说明了电力系统谐波和负序对大型水轮发电机的影响。
The practical examples are given to analyze and illustrate the effect of the harmonics and negative sequence on large hydro generators.
该控制方法能改善系统电能质量的调节，有效地补偿负荷侧谐波电流、无功功率和负序电流。
This control principle can improve the control of power quality and effectively compensate the harmonic currents at load side, reactive power and negative sequence current.
无功、负序和谐波的不良影响需要在电力系统进行评估，在牵引供电系统中采取技术措施以期综合解决。
The harmful effects brought by reactive power, harmonics and negative sequence usually be evaluated on some sensitive power system nodes and be comprehensive solved in the traction power system.
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