Testing of a novel medium voltage impedance measurement unit

In recent years the interest in deriving new concepts for electric distribution systems that build on power electronics converter interfaces for system components has increased rapidly. This interest is based on the promise that the power electronics based interfaces between distribution and generation/loads bring about higher efficiency, compacter implementation, and improved controllability. Nevertheless, ensuring stability of these converter dominated systems is a challenge. One means of analyzing stability properties is through measuring impedances, i.e., measuring input and output impedances of connected components. This paper presents results of testing the first available medium voltage impedance measurement unit.