The invention discloses an anti-interference stable
partial discharge sensor. The anti-interference stable
partial discharge sensor comprises a rear shell, the
front cover is mounted on the front surface of the rear shell; a shielding
assembly is arranged in the
front cover and comprises a conductive layer, a
permalloy middle layer and a
copper lining layer which are sequentially arranged in a sleeved mode from outside to inside, in the using process, a high-frequency
electromagnetic field is shielded through the conductive layer, the
permalloy middle layer is made of a high-permeability magnetic material and can shield a low-frequency
magnetic field, the
copper lining layer further absorbs residual electromagnetic
waves, and the
shielding effect is good. The three are separated through the first
particle mixing layer, so that
eddy current interference caused by an electric continuum formed by direct contact is avoided, and
vibration attenuation is realized at the same time; the three shielding
layers are arranged in the sensor shell, the two independent cavities are formed and filled with the heavy
metal damping particles and the soft magnetic absorption particles respectively, a cooperative anti-interference
system is constructed, the heavy
metal particles in the inner cavity are mixed with the
viscous medium, and
mechanical vibration energy can be efficiently absorbed through
inertia friction.