Distributionally Robust Distributed Generation Hosting Capacity Assessment in Distribution Systems

Mohammad Seydali Seyf Abad, Jin Ma, Ahmad Shabir Ahmadyar and Hesamoddin Marzooghi
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Mohammad Seydali Seyf Abad: School of Electrical and Information Engineering, The University of Sydney, Sydney NSW 2006, Australia
Jin Ma: School of Electrical and Information Engineering, The University of Sydney, Sydney NSW 2006, Australia
Ahmad Shabir Ahmadyar: School of Electrical and Information Engineering, The University of Sydney, Sydney NSW 2006, Australia
Hesamoddin Marzooghi: School of Engineering and Technology, Central Queensland University (CQ University), Brisbane, QLD 4000, Australia

Energies, 2018, vol. 11, issue 11, 1-19

Abstract: Uncertainties associated with the loads and the output power of distributed generations create challenges in quantifying the integration limits of distributed generations in distribution networks, i.e., hosting capacity. To address this, we propose a distributionally robust optimization-based method to determine the hosting capacity considering the voltage rise, thermal capacity of the feeders and short circuit level constraints. In the proposed method, the uncertain variables are modeled as stochastic variables following ambiguous distributions defined based on the historical data. The distributionally robust optimization model guarantees that the probability of the constraint violation does not exceed a given risk level, which can control robustness of the solution. To solve the distributionally robust optimization model of the hosting capacity, we reformulated it as a joint chance constrained problem, which is solved using the sample average approximation technique. To demonstrate the efficacy of the proposed method, a modified IEEE 33-bus distribution system is used as the test-bed. Simulation results demonstrate how the sample size of historical data affects the hosting capacity. Furthermore, using the proposed method, the impact of electric vehicles aggregated demand and charging stations are investigated on the hosting capacity of different distributed generation technologies.

Keywords: distributed generation; distributionally robust optimization; electric vehicles; hosting capacity; over-voltage; radial distribution systems; thermal capacity limits (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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