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Study of the Distributed Generation impact on distributed networks, focused on quality of power

Distributed Generation (DG) has an important role regarding the quality of power of distribution networks. It can impact in many ways such as the improvement of reliability and the voltage quality levels of the network. This paper is an extension of a previous work, which proposes a methodology, allocating generators from different sizes and technologies in distribution networks, in order to assess their impact over the distribution networks due to massive penetration levels. Such methodology is applied in the present papers in order to evaluate the impact over the voltage quality, considering different scenarios of DG insertion defined by a percentage of small scale prosumers present in the network. It illustrates the differences between impacts caused by small scale DG from different technologies, such as photovoltaic and wind power. The paper also provides a sensitivity analysis study of the impact over the voltage levels caused by different insertion levels of DG.