Photoelectric combined detection method aiming at mutual inductor of distribution network

Abstract

The invention discloses a photoelectric combined detection method aiming at a mutual inductor of a distribution network. The photoelectric combined detection method is to use various methods of a mutual inductor comprehensive detector, an ultraviolet detector, an infrared temperature measurer, a partial discharge detector, X-ray perspective detection and the like in a combined manner to meet with the requirements of judging the properties and positions of defects of the mutual inductor exactly. The photoelectric combined detection method aiming at the mutual inductor of the distribution network not only can determine whether a fault or a defect exists inside a PT (Potential Transformer) and a CT (Current Transformer) directly and judge the property of the fault or the defect in time, but also can further position the fault or the defect exactly.

Description

technical field [0001] The invention belongs to a detection method for electric power equipment, and in particular relates to the technical field of a photoelectric joint detection method for a distribution network transformer. Background technique [0002] A potential transformer (PT) is a voltage transformer, which is essentially a step-down transformer. Its main function is to provide the necessary signal for reclosing; when the voltage transformer (PT) of some lines uses a capacitive voltage transformer , can provide a signal channel for carrier communication; in addition, voltage transformers (PT) are widely used in power systems for measurement, providing metering voltage for power system departments. The main fault is mainly long-term use, excessive heat generation makes the insulation run at high temperature for a long time, which leads to insulation aging and breakdown of the voltage transformer (PT); in addition, the primary winding of the voltage transformer (PT) ...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that the fault source of voltage transformer (PT) and current transformer (CT) is mainly caused by the burning of the insulation. After the voltage transformer (PT) and current transformer (CT) are broken down, they pass through Gradually increase the voltage, the phenomenon of partial discharge will occur

However, since the ultraviolet detector and infrared detector can only detect the outside of the equipment, the MPD600 detector can only detect the partial discharge information of the tested transformer, and cannot know the specific defect form inside the tested product

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