A Comparison of Grounding Techniques for Distributed Generators Implemented in Four-wire Distribution Grids, Ups Systems and Microgrids
نویسندگان
چکیده
This paper starts with an overview of the common grounding techniques used in distribution grids. Next some important issues and problems related to grounding of distributed generators implemented in these grids will be described. Two applications will be discussed in detail: UPS systems and microgrids. The presence of a neutral conductor in these systems and the ability to operate both in grid-connected and islanded mode complicates the grounding system design. The grounding requirements need to allow correct operation in each of the two operating regimes.
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