Low-frequency insulation detection device and method for power supply system

Abstract

The invention discloses a low-frequency insulation detection device for a power supply system, which comprises a low-frequency insulation detector, wherein the front of the low-frequency insulation detector is provided with a power switch, a work indicating lamp, an alarm, a display screen, a voltage regulator and interferences, the interfaces comprise a positive electrode interface, a negative electrode interface and a measurement interface, the lower end of the measurement interface is connected with one end of a positive electrode measurement wire and one end of a negative electrode measurement wire, both the other end of the positive electrode measurement wire and the other end of the negative electrode measurement wire are provided with a measurement clamp, and the voltage regulator is connected with the positive electrode interface, the negative electrode interface and the measurement interface in series; and the outer side surface of the low-frequency insulation detector is provided with a control box connected with the low-frequency insulation detector, the front of the control box is hinged with a box door, and the upper end is provided with a transmitting antenna. The low-frequency insulation detection device can obtain detection information at any time and place in a remote mode through a mobile phone, thereby saving the trouble of manual detection recording, savingtime and labor, and being good in practicability.

Description

technical field [0001] The invention relates to the technical field of low-frequency insulation detection of a power supply system, in particular to a low-frequency insulation detection device and method for a power supply system. Background technique [0002] In the marine industry, frequency converters occupy an increasingly important position as a power supply system. Since the working environment of the ship is generally harsh, the impact of the deterioration of the climate on the equipment is particularly obvious, and the insulation failure rate of the power supply system is relatively high, so the rapid alarm of the insulation failure will be related to the safety of the entire voyage of the ship. [0003] At present, most marine power grids use IT (that is, the neutral point is not grounded) power supply system to improve the security of power supply. When the insulation resistance of the marine power grid meets the requirements of the specification, even if a single...

AI Technical Summary

Problems solved by technology

This invention effectively solves the technical problems of the reduction of the insulation performance of the whole vehicle caused by the previous detection circuit, the inability to locate the insulation fault point, the complex structure, and the inability to accurately detect the positive and negative leakage at the same time.

However, its disadvantages are: in the actual use process, it is necessary to set up a special person to record data at fixed points at regular intervals, and at the same time check the working status of the low-frequency insulation detection device to ensure the normal operation of the low-frequency insulation detection device. Impossible to record values ​​at fixed points at regular intervals

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