A system and method for electromagnetic compatibility testing of system-level electronic transformers

Abstract

The invention discloses a system-level electronic mutual inductor electromagnetic compatible testing system and method; one end of a high voltage power supply capacitive voltage divider P1, one end of a power supply side simulation capacitor C1 and one end of a secondary side of a test transformer T are respectively connected with one end of a vacuum circuit breaker switch S; the other end of the vacuum circuit breaker switch S is connected with one end of a remote controlled movable discharge sphere gap D; the other end of the remote controlled movable discharge sphere gap D is connected with one end of a load current measuring mutual inductor CT1; the other end of the load current measuring mutual inductor CT1 is connected with one end of a tested electronic current transformer CT2; the other end of the CT2 is connected with one end of a high voltage load side capacitive voltage divider P2, one end of a load side simulation capacitor C2, and one end of a tested electronic voltage transformer PT; the other end of the C2 and the other end of the PT are connected with one end of an adjustable earthing inductor L; the other end of the P1, the other end of the C1, the other end of the secondary side of the test transformer T, the other end of the P2, and the other end of the L are respectively grounded. The system and method can truly simulate the field dynamic sphere gap continuous arcing and quenching process.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic compatibility test and measurement of electric power system, and in particular relates to an electronic transformer electromagnetic compatibility test system and method. Background technique [0002] At present, the electromagnetic compatibility of electronic transformer products is carried out in accordance with the national standard "GB / T 17626 Electromagnetic Compatibility". There are still many failures of electromagnetic protection performance. The main reasons for the experimental research and theoretical analysis are as follows: the national standard stipulates that a single test item should be carried out at the same time; the individual test parameters stipulated by the national standard are quite different from the actual on-site measurement parameters. In addition, the characteristic parameters of the electromagnetic disturbance source are closely related to the voltage level, ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a system-level electronic transformer electromagnetic compatibility test system and method to overcome the shortcomings of the above-mentioned existing test methods

This method can solve the problem that the ball gap of the original test system is fixed and inconsistent with the dynamic arc process of the on-site isolation switch opening and closing process, and realize the real simulation of the dynamic ball gap continuous arcing and arc-extinguishing cycle process on site.

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