Distributed Energy Resources (DER) Systems Integration into MV and LV Networks - Impact on Power Quality of the System

Abstract

The fast growing of Distributed Generation (DG)

in European electricity networks, lead to challenges of different

nature. Due the fast growth of market split of Distributed

Energy Resources (DER), today’s electric power system of

centrally located generation, transmission networks and

distribution networks is expected to evolve into a new

configuration. The achievement of such drastic transformation

will heavily rely on studies that evaluate the behaviour of

networks with integrated DER systems. In particular, Power

Quality (PQ) has been given significative attention due to the

fact that new power system applications are more and more

sensitive to power quality disturbances.

The aim of this study is to examine the power quality behaviour

of the network in case of integration of DER units at different

locations of the MV and LV system. In order to analyse the

impact of DG on the network's power quality, a 380 kV

transmission system with MV, and LV subsystems, 10 kV and

0.4 kV respectively is used, DER units are integrated and power

quality analyses are performed.