Online monitoring intelligent current transformer

Abstract

The invention discloses an online monitoring intelligent current transformer, which comprises a current transformer body, a box body, a combined sensor, an end screen terminal board, a terminal board, a dielectric loss sensor, a protection device and a grounding terminal, wherein the lower end of a fuel tank of the current transformer body is provided with the box body, the end screen terminal board realizes communication connection between the combined sensor and an end screen. According to the online monitoring intelligent current transformer, the combined sensor, a dielectric loss tester and the current transformer are integrally arranged, so that the combined sensor and the dielectric loss tester serve as part of the current transformer, and a hardware condition for partial discharge and dielectric loss tests of the current transformer in an electrified state during operation is provided, thus the effect of facilitating partial discharge and dielectric loss detection in the electrified process can be achieved, the electrified test of the current transformer is convenient, safe and precise, and a power supply of the current transformer does not need to be cut off, thereby reducing economic loss caused by power outage.

Description

technical field [0001] The invention relates to the technical field of power equipment, in particular to an online monitoring intelligent current transformer. Background technique [0002] In order to realize the inspection and test of the running current transformer without power failure, the dielectric loss live test technology of the capacitive transformer equipment based on the same-phase comparison method and the live partial discharge detection technology of the high-frequency method transformer have completed the simulation test and calibration. After the test work, it began to be promoted in the power grid pilot, and achieved certain results, but it failed to be widely promoted. The reason is that the above-mentioned equipment needs to be connected to a dielectric loss tester, a partial discharge detector or an ultra-high frequency partial discharge detector when the live test is performed. Detection equipment, the installation of the above detection equipment requir...

Images