波形畸变产生高次谐波,而高次谐波对系统内各种电力设备、用户和通信线路带来危害,谐波电流和无功电流大量注入电网,影响电能质量,输电效率和设备的安全运行及正常使用。国民经济各部门乃至家庭都受到谐波的影响,谐波已成为电力系统中的公害。 Harmonic waveforms produce high harmonics, while the higher harmonics of various power equipment within the system, users and communication lines harm, a large number of harmonic currents and reactive current injected into the grid, affecting power quality, transmission efficiency and equipment safety Operation and normal use. All sectors of the national economy and even families are affected by the harmonics, which have become a public hazard in the power system.