Research on the Comprehensive Test Method for the Characteristics of Generator De-Excitation Switch

Abstract

This paper proposes a comprehensive test method to meet the multi-functional testing requirements of de-excitation switch, which can simplify the complex test process and greatly reduce the cost of testing. A comprehensive test topology was designed based on the requirements of multiple test projects, and the key parameters were intended. The test circuit generates a constant test current based on the supercapacitor, Through the shunt and the precision recording module, the method realizes the synchronous recording of the test current and the test voltage, and can accurately record the action state and action time of each break of the degaussing switch, so as to realize the switching action and synchronization performance test of the de-excitation switch. A multi-functional comprehensive test circuit simulation model was built for verification, which showed the feasibility of the circuit design. A multi-functional comprehensive test device was built for experiments, and the experimental results show that the comprehensive test device can accurately test the contact resistance of the break, accurately test the action time of the switch, and test the synchronous performance of the break, which can be used efficiently and flexibly in the on-site maintenance work.