Automatic inspection method for bus-to-ground alternating voltage precision of insulation monitoring device

Abstract

The invention belongs to the technical field of automatic inspection of transformer substations, and relates to an automatic inspection method for bus-to-ground alternating voltage precision of an insulation monitoring device. According to the detection method, automatic regulation and control of a preset rule and calculation and detection of real-time numerical values are carried out on a programmable alternating current power supply, a programmable direct current power supply, a programmable power meter and a fault simulation module, and the bus-to-ground alternating current voltage precision of the insulation monitoring device is finally given. And an accurate judgment basis is provided for inspection personnel to inspect the accuracy of the bus-to-ground alternating voltage of the insulation monitoring device. According to the invention, the detection efficiency and accuracy of the bus-to-ground AC voltage precision of the insulation monitoring device can be effectively improved, the rapid, automatic and efficient detection of the bus-to-ground AC voltage precision of the insulation monitoring device is realized, and the working pressure of detection personnel is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of substation automatic inspection, in particular to an automatic inspection method for the accuracy of the AC voltage between the busbar and the ground of an insulation monitoring device. Background technique [0002] The charging device in the DC power system of the substation converts AC power into DC power to charge the battery pack and supply power to the load. In order to improve the reliability of load power supply, the DC power supply system adopts the floating operation mode. When the power supply circuit is damaged and grounded, the load still maintains normal power supply, but when two poles are grounded, it will cause short-circuit tripping and cause the load to be powered off. [0003] The insulation monitoring device uses a balance bridge and a detection bridge to monitor the ground insulation status of the DC power system in real time, and can promptly detect faults such as one-point grounding...

AI Technical Summary

Problems solved by technology

Manual inspection and judgment by inspectors on the accuracy of the busbar-to-ground AC voltage of the insulation monitoring device is not only time-consuming, but also the inspection process is cumbersome. Inspection costs are relatively high

Images