Maschinenfabrik Reinhausen Gmbh

Siemens Aktiengesellschaft

Uwe Stephan

Andreas Thiede

Peter Bauerschmidt

Jochen Ermisch

Martin Hinow

Guenther Siebert

Frank Thieme

Ralf Bergmann

Yulong Huang

The present invention relates to a test system for high-voltage technology devices, in particular shunt reactors, as defined in the preamble of independent patent claim. The invention also relates to a method which can be carried out with this test system and is intended to test high-voltage technology devices according to coordinate patent claim. The general idea of the test system according to the invention is to provide a continuously adjustable inductance and a capacitance, which can be adjusted in discrete steps, on the secondary side of the test transformer in such a manner that said components form a series resonant circuit together with the test object in the form of an inductance. In the method which can be carried out with the test system according to the invention, a rough adjustment of the test system is carried out using the discretely adjustable capacitances of the capacitor bank by connecting individual capacitances of the capacitor bank via an iterative process if an undercapacitance is measured in the test system by means of a measuring device or by disconnecting individual capacitances if an overcapacitance is measured by means of the measuring device until a predefined threshold value of an overcapacitance prevails, with the result that fine tuning of the test system is then carried out by means of the continuously adjustable inductance in such a manner that said components form, together with the test object in the form of an inductance, a series resonant circuit which can be tuned to the point of resonance thereof.

Test system and method for testing high-voltage technology

The invention relates to a device for testing transformers, having a static frequency converter (). The static frequency converter () comprises a plurality of outlets (), which are connected to a filter device (). The filter device () also comprises a plurality of outlets (), which are connected to a matching transformer (), and wherein the matching transformer () is connected to the transformer () intended for testing. The filter device () is a filter transformer ().

Apparatus for testing transformers

For precise measurement of currents with high dynamic range, especially in gas-insulated voltage switchgear, a first signal of a first low-power measurement transformer and a second signal of a second nonmagnetic measurement transformer, operating, for example, according to the principle of a Rogowski coil or according to the Faraday effect, are compared. Depending on the degree of accuracy, one of the two signals is then selected and further processed. A deviation of the two signals from each other, especially their gradient, is referred to as comparison criterion. In a corresponding configuration, the two measurement transformers of different type are connected to a common processing component for signal processing.

Method and configuration for current measurement

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Freital, Germany

Uwe Stephan