Multifunctional transformer comprehensive testing device

Abstract

A multifunctional transformer comprehensive testing device is mainly composed of a working power supply, a data acquisition system, a CPU system, an operation interface, a power output control system, a relay system and a binding post. The data acquisition system comprises a load acquisition system, an impedance acquisition system and a direct resistance acquisition system. The multifunctional transformer comprehensive testing device is characterized in that a demagnetization acquisition system is further arranged in the data acquisition system, the demagnetization acquisition system is connected with the CPU system through a serial port, the demagnetization acquisition system comprises three AD conversion chips, and each AD conversion chip is provided with an AD7705 analog-digital converter, a serial input / output isolation circuit, a power isolation circuit, a crystal oscillating circuit, a reference voltage source circuit and an analog signal input circuit. According to the multifunctional transformer comprehensive testing device, since the demagnetization acquisition system is additionally arranged, four transformer winding testing devices are used in a combined mode, the occupied space and the frequency of mounting and dismounting transformers by detection personnel are reduced, personal safety is ensured, residual magnetism in the transformers is eliminated rapidly, and work efficiency is improved.

Description

technical field [0001] The invention relates to a transformer detection device, in particular to a multifunctional transformer test comprehensive test device. Background technique [0002] my country's power industry requires testing of winding DC resistance, low-voltage short-circuit impedance, on-load tap-changer characteristics, and winding degaussing during transformer outage maintenance, new transformer handover and acceptance, and power outage troubleshooting. Winding DC resistance, low-voltage short-circuit impedance, on-load tap-changer characteristics and demagnetization are four independent test items that must be done. At present, domestic test instrument manufacturers produce single test equipment for each test item, and there is no comprehensive test. device. In this way, the test personnel must carry a variety of test equipment and related test lines at the same time, and repeat the test with the upper and lower transformers. The labor intensity is high, the r...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that when testers use existing methods to detect transformers, they carry a variety of detection equipment, resulting in waste of equipment materials, occupying a large amount of work space, and increasing labor intensity caused by repeated up and down tests. To solve problems such as increased risk index, a multifunctional transformer test comprehensive test device is provided

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