Optimal network reconfiguration for power loss minimization and voltage profile enhancement in distribution systems

Abstract

This paper presents an optimal method for optimizing network reconfiguration (NR) problems in a power distribution system (PDS) for the purpose of power loss reduction and voltage profile (VP) improvement. Furthermore, a modified algorithm was presented to address this problem in order to provide a more efficient PDS. Various works which used NR to improve VP and reduce power loss were discussed and summarized in detail. In particular, a modified Selective particle swarm optimization (SPSO) method was used for NR in existing networks considering different loading conditions. The main objective of this study is to minimize real power losses and enhance VP of a distribution system using the proposed SPSO method. The SPSO method was programmed in MATLAB R2016b software and tested using IEEE 33-bus radial distribution system (RDS). The obtained test results show that the real power was enhanced by 99.341%, 97.289%, and 95.389% for the light, normal, and heavy load conditions, respectively. Also, the minimum voltage level in the worst case was significantly enhanced from 0.8841 p.u. to 0.9510 p.u. Towards the end, a comparative analysis of the proposed SPSO with existing methods for distribution network reconfiguration (DNR) is presented. The comparative results show that the proposed SPSO was found to be more efficient in reducing voltage deviation (VD) and power losses in the system.

Fuzzy logic based optimal placement of voltage regulators and capacitors for distribution systems efficiency improvement

“…This in turn enhanced the dynamic performance of the capacitor banks with variable consumer loads. According to the authors of [ 13 , 14 ], reducing total losses in DSs is critical for improving overall power delivery efficiency. This can be accomplished by strategically putting automated voltage regulators (AVR) in a RDS.…”

Optimal Operation of Smart Distribution Networks using Gravitational Search Algorithm

“…In the literature, several researchers use conventional approaches like Fast Decoupled, Newton Raphson load flow approaches to address static and dynamic distribution network problems [14]. However, these load flow approaches are inefficient due to high resistance to reactance (R/X) ratio of the distribution line and its radial structure, which has resulted in the development of special load flows for the RDSs [15]. Most of the load flow calculations are based on forwardbackward sweep methods.…”

An effective network reconfiguration approach of radial distribution system for loss minimization and voltage profile improvement

“…The important factor that influences network reconfiguration is altering the topology of the system for efficient operation. But each distribution feeder consists of different combination of loads [2].…”