The invention provides an
electric field distribution monitoring device of an ultrahigh-
voltage circuit insulator. The
electric field distribution monitoring device comprises an equipment end, an insulation rod and an optical
electric field sensor, wherein a computer, an analogue divider, a filter, a photoelectric converter, a light-emitting
diode and a storage battery are sequentially arranged inthe equipment end from
right to left, a storage chamber is arranged on the equipment end, a bottom plate is arranged in the optical
electric field sensor, a Pokeles component is arranged at the top of the bottom plate, a one fourth wave plate and an analyzer are respectively arranged at two ends of the Pokeles component, the light-emitting
diode is connected with the one fourth wave plate by a first
fiber, and the analyzer is connected with the photoelectric converter by a second
fiber. The electric field distribution monitoring device of the ultrahigh-
voltage circuit insulator is reasonablein design, the optical electric field sensors are all needed to employ passive devices, the problems of uncertainty, poor
repeatability and the like of traditional manual operation are changed, the site working intensity can be substantially reduced, the measurement accuracy is improved, and the safety of site operation is guaranteed.