Passive electric power harmonic protector

The utility model discloses a passive electric power harmonic protector, including first filtering unit, second filtering unit, third filtering unit, first filtering unit have one, second filtering unit have one, third filtering unit have one, the hookup of first filtering unit and third filtering element string on electric power system's transmission line, second filtering unit one end links to each other with transmission line's wiring end A, the second filtering unit other end links to each other with the earthing terminal. First filtering unit include first electric capacity C1, first inductance L1, second filtering unit include second electric capacity C2, third electric capacity C3, second inductance L2, third inductance L3, first resistance R1, third filtering unit include fourth electric capacity C4, fourth inductor L4. The utility model discloses be the separation that the harmonic had been realized to the high impedance to the harmonic, simultaneously the high frequency harmonic wave electric curren