Voltage converter impact testing device and method for active electronic voltage transformer

Abstract

The invention provides a voltage converter impact testing device for an active electronic voltage transformer and a corresponding impact testing method, aiming at solving the problem that when a current intelligent transformer station makes a type test for an active electronic voltage transformer and a voltage converter used by the active electronic voltage transformer, the utilized method is a slowly boosting testing method, thus bringing a great hidden trouble for power production. The voltage converter impact testing device includes a test transformer which provides the voltage required by the test, a branch circuit, voltage waveform collectors, and an oscilloscope, wherein the branch circuit is connected with the test transformer in series, and a breaker is arranged on the connection loop; an input end of a voltage converter is connected with one voltage divider of the branch circuit in parallel; the voltage waveform collectors are connected with an output end of the voltage converter; and the oscilloscope is connected with the voltage waveform collectors. The voltage converter impact testing device for an active electronic voltage transformer completely simulates the practical impact process before and after opening and closing of the breaker, and can practically verify whether the voltage converter has the capability of accurate outputting in the impact state, and solves the hidden trouble which may occur during the power production process.

Description

technical field [0001] The invention relates to the technical field related to component testing in smart substations, in particular to an impact test device and a corresponding impact test method for voltage converters used in active electronic voltage transformers in smart substations. Background technique [0002] In recent years, with the rapid advancement of the construction of smart substations and new-generation smart substations, a large number of new equipment and technologies have been adopted in smart substations, such as new-generation smart substation protocols, intelligent protection devices, smart terminals, merging units, Electronic transformers and so on. As the key equipment for the transformation of primary and secondary electrical quantities, the extensive application of electronic transformers is the biggest difference between smart substations and new-generation smart substations compared to traditional integrated automated substations. [0003] Acco...

AI Technical Summary

Problems solved by technology

[0006] The present invention is aimed at the type test of the active electronic voltage transformer and the voltage converter used in the existing intelligent substation. Before and after the impact process, the actual measurement characteristics of the voltage converter used for the active electronic voltage transformer before and after the opening and closing of the circuit breaker have not been verified, which has brought great hidden dangers to power production. To provide an active electronic voltage transformer for smart substations Voltage converter shock test device for voltage transformer and corresponding shock test method

Images