Abstract

THANGARAJ, Yuvaraj  and  KUPPAN, Ravi. Multi-objective simultaneous placement of DG and DSTATCOM using novel lightning search algorithm. J. appl. res. technol [online]. 2017, vol.15, n.5, pp.477-491. ISSN 2448-6736.  https://doi.org/10.1016/j.jart.2017.05.008.

In this proposed study, a new long term scheduling is proposed for simultaneous placement of Distributed Generation (DG) and Distribution STATic COMpensator (DSTATCOM) in the radial distribution networks. The proposed work has a unique multi-objective function which consists of minimizing power loss, and total voltage deviation (TVD), as well as maximizing the voltage stability index (VSI) subject to equality and inequality system constraints. The multi-objective problem has been solved by a novel metaheuristic optimization algorithm called as lightning search algorithm (LSA). In the proposed approach, the feeder loads are varied linearly from light load (0.5) to peak load (1.6) with a step size of 1%. In each load step, the optimal sizing for DG and DSTATCOM are calculated by LSA. Through curve fitting technique (CFT), the optimal sizing for both DG and DSTATCOM per load level is formulated in the form of generalized equation. The proposed generalized equation will help the distribution network operators (DNOs) to select the DG and DSTATCOM sizes according to the load changes. The proposed method is tested on two test systems of 33-bus and 69-bus in different cases.

Keywords : Distributed Generation (DG); Distribution STATic COMpensator (DSTATCOM); Lightning search algorithm (LSA); Voltage stability index (VSI); Curve fitting technique (CFT); Distribution network operators (DNOs).

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