Impact of Distributed Generation Integration on Distribution System Reliability

Ensuring the reliability of electrical power systems is essential for meeting the growing energy demands of modern society. In this paper, we investigate the technical implications of distributed generation deployment, focusing on its influence on system reliability indices such as frequency and duration of distribution grid components failures and resulting expected energy not delivered to the consumers. In order to assess this impact a reliability analysis is performed for case study distribution network in DIgSILENT PowerFactory software for integration scenarios of variable photovoltaic generation and constant biogas power plants generation focusing on possibility of islanded operation of distributed generation on reliability indices.