Sammendrag
The existing power systems are challenged as the
share at MV distribution level of distributed generation is
increasing. In order to ensure the security of operation and
power quality in these grids, transmission and distribution power
system operators have issued connection and operation guidelines
related to integration of distributed generation. Some of these
guidelines are designed to assess fault ride–through capabilities
when dynamic connection studies are performed for distributed
generation units. While most of the ongoing research have
addressed especially the fault ride–through capabilities of the
investigated generation unit when the most severe fault occur
close to the point of common coupling, some research questions
remain related to the adequacy of the representation of the
external grid. This paper will compare several representations of
external grid proposed by different authors for achieving more
accurate results of fault ride–through capabilities of small scale
hydro units.
share at MV distribution level of distributed generation is
increasing. In order to ensure the security of operation and
power quality in these grids, transmission and distribution power
system operators have issued connection and operation guidelines
related to integration of distributed generation. Some of these
guidelines are designed to assess fault ride–through capabilities
when dynamic connection studies are performed for distributed
generation units. While most of the ongoing research have
addressed especially the fault ride–through capabilities of the
investigated generation unit when the most severe fault occur
close to the point of common coupling, some research questions
remain related to the adequacy of the representation of the
external grid. This paper will compare several representations of
external grid proposed by different authors for achieving more
accurate results of fault ride–through capabilities of small scale
hydro units.