Device for detecting hybrid traveling waves in power transmission line

The invention relates to a device for detecting hybrid traveling waves in a power transmission line and relates to the technical field of traveling wave detection. The device comprises a traveling wave sensor which is used for collecting hybrid traveling wave signals, and a signal separation circuit, wherein the signal separation circuit comprises an integrator, a low-pass filter, a subtractor, a wave trap, a high-pass filter, a first amplifier and a second amplifier, an input end of the integrator is connected with the traveling wave sensor, a first input end of the subtractor is connected with an output end of the integrator, and a second input end of the subtractor is connected with an output end of the integrator through the low-pass filter; a first output end is sequentially connected with the wave trap and the first amplifier, a second output end is sequentially connected with the high-pass filter and the second amplifier, meanwhile, the first amplifier is configured to output a fault traveling wave sig