Closed-loop testing system of direct-current transformer

Abstract

The invention discloses a closed-loop testing system of a direct-current transformer. A standard source collection module and an optical fiber receiving module are arranged in the closed-loop testingsystem, analog signals outputted by a standard source through a secondary terminal are acquired through the standard source collection module and converted into first digital signals, and second digital signals outputted by the direct-current transformer applied with standard source primary terminal output signals are acquired through the optical fiber receiving module. Under the action of synchronizing clock signals transmitted by a synchronizing module, the first digital signals and the second digital signals are synchronously received, processed, packed and uploaded to an upper computer through a digital synchronization processing module connected with the synchronizing module, and finally, the upper computer completes closed-loop testing of the direct-current transformer according to the first digital signals and the second digital signals. The closed-loop testing system lowers requirements on stability of a standard source and improves accuracy of testing results.

Description

technical field [0001] The invention relates to the technical field of DC transformer testing, in particular to a closed-loop testing system for DC transformers. Background technique [0002] In the power system, the DC transformer is an important primary equipment of the DC transmission system, and its characteristic parameters and key indicators are directly related to the stable operation of the DC transmission system. In actual operation, the DC transformers of some converter stations have failed many times, and some failures directly lead to the single-pole blocking of the DC transmission system, which endangers the stable operation of the DC transmission system and causes large economic losses. Therefore, it is necessary to carry out effective on-site detection and testing of DC transformers before they are put into operation and during operation, so as to judge the actual performance and operating conditions of DC transformers on site and avoid the impact caused by DC...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a closed-loop test system of a DC transformer, which solves the technical problems that the open-loop test system of a DC transformer in the prior art has extremely high requirements on the stability of the DC source, and it is difficult to achieve synchronous measurement and the measurement results are inaccurate.

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