Distribution network motor overload index prediction method and distribution network motor overload index prediction device

Abstract

The invention discloses a distribution network motor overload index prediction method and a distribution network motor overload index prediction device. According to the distribution network motor overload index prediction device, signals acquired by a signal acquisition unit are output to the input end of an A / D conversion unit; the output end of the A / D conversion unit is connected with the input end of a central processing unit; the output end of the central processing unit is connected with the input ends of a human-computer interaction information display unit, a remote control unit and a 4G communication transmission module; the output end of the remote control unit is connected with the input end of the central processing unit; the A / D conversion unit is a TLC2543 serial A / D converter; the central processing unit is an STC89C51 single chip microcomputer; the remote control unit is an HS0038 infrared probe; the 4G communication transmission unit is an ME3760 LTE module; and the human-computer interaction information display module is an HG1286402C liquid crystal display module. The method and the device have the characteristics of high prediction precision and high efficiency of data acquiring and processing, and provide an effective guarantee for safe operation of distribution network current transformers.

Description

technical field [0001] The invention relates to a method for monitoring power transmission and distribution, in particular to a method and device for predicting a distribution network motor load overload index, which belongs to the technical field of power systems. Background technique [0002] The motor is a device that converts electrical energy into mechanical energy. During the energy conversion process, part of the energy will be lost, which will cause the motor to heat up and the temperature will rise. As a result, the life of the insulation and other properties of the motor are affected. For example, heating reduces the air gap, causing additional loss and torque reduction. Due to the increase of current, the overload of the motor will cause a sharp increase in heat generation, which will damage its insulation, shorten its service life and even be burned. The motor load of the distribution network accounts for more than 60% of the total load, especially for large mo...

AI Technical Summary

Problems solved by technology

At present, the traditional method mainly adopts traditional empirical formula calculation or regular inspection, replacement and other methods. The main problem is that the fault cannot be found in time, and the prediction or judgment results have large errors.

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