电力公害

由于中大功率设备在电网中占有很大比重，三相功率因数校正在解决电力公害方面具有十分重要的作用，因此三相PFC已经成为国际电力电子学界研究的热门课题。

Because the middle and large power equipments account for heavy proportion and three-phase PFC has important function to solve the pollution to the unity , three-phase PFC has become hot study subject in international power electronics educational circles already .

目前谐波与电磁干扰、功率因数降低已并列为电力系统的三大公害，世界各国对电力系统的公害越来关注。

It has been to three public pollution of the power system that is harmonic current , electromagnetic interference and lower power factor . All around the world , people take more and more attention to the pollution of power system .

电力谐波是威胁电力系统和其它用电负荷安全运行的电力公害。

It is common understanding that harmonic wave has public harmfulness to electric power system and other aspects on which electro-load 's safety running is influenced .

随着电力电子设备的应用日益广泛，谐波对电网的影响越来越大，电力谐波已经成为电力系统的公害。

With the more and more extensive applications of power electronics equipments , the effect of power harmonics on the power system has become more and more great , and the power harmonics has become the social effects of pollution of power system .

电力谐波干扰导致电气设备异常和事故有逐年增长的趋势，电力系统谐波已成为威胁电力系统和其它用电负荷安全运行的电力公害。

ELECTRIC POWER DISSERVE AND MEASURE The growing tendency of the abnormity and accident which caused by the harmonic wave has already become the social harmfulness in the power system .

电力系统自诞生以来，就孪生了电力系统谐波，随着电子装置的广泛应用，谐波问题变得日益严重，电力谐波已经成为电力系统的公害。

Since the power system was born , harmonics in power system had been in existence . With the extensive use of electronic installations , harmonic problems become increasingly serious , power system harmonic has already become the public hazard of power system .