Abstract
Active distribution networks concerned with providing efficient control technologies for large-scale integration of distributed generation (DG) units into the distribution systems. This research proposes a methodology for distribution networks reconfiguration by controlling number, sharing, size, and location of DG units. Also, the soft-open points (SOPs) are added instead of the tie line switches. The SOPs are benefited with its high capability in controlling active/reactive power flow to enhance transmission system performance. The main target of this work is to increase the efficiency of energy utilization through minimizing the power system losses and improving system voltage profile while preserving all system constraints within permissible limits with reliable and flexible networks in normal and abnormal conditions with a suitable penetration level of DG. A modified particle swarm optimizer is developed to find the best system configuration, size, and placement of DG units as well as the size and allocation of SOPs. Research methodology is tested on two standards: the IEEE 33-node and 69-node distribution networks under different operating cases. This paper compares the obtained results with those in the literature to prove the capabilities of the proposed work. Finally, the suggested work pursues the optimal number of DG units with their appropriate penetration levels and selects the most convenient location of SOPs for adequate network reconfiguration.
Highlights
The concept of smart electric Distribution Networks (DNs) and better energy utilization are the main future research trends
This paper presented a holistic framework to mitigate distributed generation with the innovative power electronic devices Soft-Open Points (SOPs) for enabling the most convenient system reconfiguration aiming at better energy utilization of Active Distribution Networks (ADNs)
Simulation results proved that the proposed model leads to the lowest power losses with an enhanced voltage profile
Summary
The concept of smart electric Distribution Networks (DNs) and better energy utilization are the main future research trends. With Active Distribution Networks (ADNs) for a better configuration that enhance system performance and reliability. This study increases total system efficiency and raises system voltages to acceptable levels, it increases the hosting capacity of DG units with the help of SOPs [7]. It finds the most suitable places, sharing, and size of DG units SOPs best control and proves its role in moving the traditional system towards more control and being smarter as such new technologies relief all system advance
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