Only effective filtering noise signal, the accurate useful information to the power quality analysis can be obtained, the conclusion of power quality analysis is reliable.
只有有效的滤除噪声信号，才能获得准确有用的电能质量信息，才能分析得出可靠的结论。
Analysis results showed that by these five indices, features of different disturbances can be extracted effectively. The proposed approach provides a new idea for power quality analysis.
分析表明，通过上述五项指标可以有效地提取不同扰动的特性，为电能质量分析提供新思路。
This method not only can be used in the analysis and calculation of power quality, but also in the theoretical deduction of voltage fluctuation and voltage flicker.
该计算方法可以应用于电力系统电能质量的分析计算，也可以应用于电压波动和闪变的理论推导。
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