There are several power quality issues such as power surges, voltage sags, outages, harmonics, etc.
电能质量问题包括以下几种：电涌、电压闪变、断电、谐波等。
Nearly 90% of all power quality problems are voltage sags and momentary outages.
在所有的电力质量问题中，几乎90%为电压降落与瞬间停电。
As costly as they can be, sags are not the only power-quality problem plaguing users of automation. Power surges, the more famous relatives of sags, can be outright destructive.
骤降不是影响自动化用户的电源质量的唯一问题，它更加有名的近亲——浪涌，能造成彻底的破坏，造成的代价同骤降一样高昂。
In various power quality problems voltage sags are the worst dynamic power quality problems.
在各种电能质量问题中，电压跌落是危害最严重的动态电能质量问题。
The stochastic assessment method was presented for voltage sags of power distribution system for coal mining.
提出了一种用于煤矿配电系统电压衰减的概率评估方法。
Knowing the relativity of the voltage sags between the lines in complex power system will help to analyze and prevent the voltage sags.
明确复杂网络线路间电压暂降相关性将有助于分析和抑制电压暂降现象。
Voltage sags have become a new focus of the study on power quality owing to significant changes of modern power systems and load profiles.
现代电网与负荷构成的变化使电压暂降问题成为热点。
Power quality disturbances mainly include harmonics, voltage sags, voltage swells, voltage interrupts, flickers, oscillation transients, voltage sags with harmonic and voltage swells with harmonic.
电能质量扰动主要包括谐波、电压暂降、电压暂升、电压中断、电压波动、暂态振荡、谐波暂升和谐波暂降等电能质量问题。
Voltage sag is a crucial power quality problem. Due to the unbalance fault present in occurrence of sags, it is more complicated to deal with the unbalanced voltage sag.
电压暂降作为一种电能质量问题，由于不对称故障的存在，使处理不对称电压暂降变得复杂。
Voltage sag is a crucial power quality problem. Due to the unbalance fault present in occurrence of sags, it is more complicated to deal with the unbalanced voltage sag.
电压暂降作为一种电能质量问题，由于不对称故障的存在，使处理不对称电压暂降变得复杂。
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