Voltage Stability Assessment of Radial Distribution Systems Including Optimal Allocation of Distributed Generators.

Ali Selim; Salah Kamel; Loai S. Nasrat; Francisco Jurado

doi:10.9781/ijimai.2020.02.004

Authors

Ali Selim Universidad de Jaén
Salah Kamel Aswan University
Loai S. Nasrat Aswan University
Francisco Jurado Universidad de Jaén

DOI:

https://doi.org/10.9781/ijimai.2020.02.004

Keywords:

Fuzzy Logic, Voltage Stability, Whale Optimization Algorithm, Distribution Generator

Supporting Agencies

The authors gratefully acknowledge the contribution of the NSFC (China)-ASRT (Egypt) Joint Research Fund, Project No. 51861145406 for providing partial research funding to the work reported in this research.

Abstract

Assessment of power systems voltage stability is considered an important assignment for the operation and planning of power system. In this paper, a voltage stability study using Continuous Power Flow (CPF) is introduced to evaluate the impact of Distribution Generator (DG) on radial distribution systems. On the way to allocate the DG, a hybrid between the Voltage Stability Index (VSI) and Whale Optimization Algorithm (WOA) is developed. The main purpose of using VSI is to find the most sensitive buses for allocating the DG in the system. Hence, Fuzzy logic control with the Normalized VSI (NVSI) and the voltage magnitude at each bus are used to determine the candidate buses. However, the best DG size is calculated using WOA. Four standard radial distribution systems are used in this paper; 12, 33, 69, and 85-bus. The developed hybrid optimization method is compared with other existing analytical and metaheuristic optimization techniques to prove its efficiency. The results prove the ability of the developed method in the allocation of DG. In addition, the influence of the DG integration on enhancing the voltage stability through injecting the proper active and reactive powers is studied.

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