Abstract
The output generations of renewable energy sources (RES) depend basically on climatic conditions, which are the main reason for their uncertain nature. As a result, the performance and security of distribution systems can be significantly worsened with high RES penetration. To address these issues, an analytical study was carried out by considering different penetration strategies for RES in the radial distribution system. Moreover, a bi-stage procedure was proposed for optimal planning of RES penetration. The first stage was concerned with calculating the optimal RES locations and sites. This stage aimed to minimize the voltage variations in the distribution system. In turn, the second stage was concerned with obtaining the optimal setting of the voltage control devices to improve the voltage profile. The multi-objective cat swarm optimization (MO-CSO) algorithm was proposed to solve the bi-stages optimization problems for enhancing the distribution system performance. Furthermore, the impact of the RES penetration level and their uncertainty on a distribution system voltage were studied. The proposed method was tested on the IEEE 34-bus unbalanced distribution test system, which was analyzed using backward/forward sweep power flow for unbalanced radial distribution systems. The proposed method provided satisfactory results for increasing the penetration level of RES in unbalanced distribution networks.
Highlights
Renewable energy sources (RES) units have the potential to replace conventional energy sources in electrical power systems because of their environmental and technical merits, especially with the variations in fossil fuel prices and their non-renewability
In [1], the authors discussed the operational and reliability issues that resulted from the high penetration of Photovoltaic (PV) in power systems
The authors of [4] proposed different oscillation mitigation controllers to overcome the fluctuation caused by wind power using time-domain simulations
Summary
Renewable energy sources (RES) units have the potential to replace conventional energy sources in electrical power systems because of their environmental and technical merits, especially with the variations in fossil fuel prices and their non-renewability. These reasons motivated decision-makers to increase the RES penetration level in distribution systems. In [1], the authors discussed the operational and reliability issues that resulted from the high penetration of Photovoltaic (PV) in power systems. The authors of [4] proposed different oscillation mitigation controllers to overcome the fluctuation caused by wind power using time-domain simulations
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