scholarly journals Network Reconfiguration for an Electric Distribution System with Distributed Generators based on Symbiotic Organisms Search

2019 ◽  
Vol 9 (6) ◽  
pp. 4925-4932 ◽  
Author(s):  
T. L. Duong ◽  
T. T. Nguyen
Keyword(s):  
Distribution System ◽  
Distribution Systems ◽  
Reducing Power ◽  
Network Reconfiguration ◽  
Symbiotic Interaction ◽  
Symbiotic Organisms Search ◽  
Electric Distribution System ◽  
Comparison Results ◽  
Electric Distribution ◽  
Symbiotic Organisms

This paper proposes a method of network reconfiguration based on symbiotic organisms search (SOS) algorithm for reducing power loss of the electric distribution system. The SOS is a recent developed meta-heuristic algorithm inspired from the symbiotic interaction strategies of organisms for surviving and propagating in the ecosystem. Compared to other algorithms, SOS does not need any control parameters during the searching process. The advantages of the proposed SOS method have been validated in two electric distribution systems. Three network cases have been considered for each system, consisting of performing network reconfiguration on the system without distributed generator (DG) placement, the system installed type-P DGs and the system installed type-PQ DGs. The comparison results with particle swarm optimization and other previous methods show that the proposed SOS can be a promising technique for the problem of electric network reconfiguration.

scholarly journals Finding Radial Network Configuration of Distribution System Based on Modified Symbiotic Organisms Search

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-23
Author(s):  
Thuan Thanh Nguyen ◽  
Thanh-Quyen Ngo ◽  
Thanh Long Duong ◽  
Thang Trung Nguyen
Keyword(s):  
Distribution System ◽  
Distribution Systems ◽  
Network Reconfiguration ◽  
Success Rates ◽  
Network Configuration ◽  
Symbiotic Organisms Search ◽  
Comparison Results ◽  
Symbiotic Organisms ◽  
Radial Network

Network reconfiguration (NR) is one of the most effective methods to reduce line power loss in the distribution system, which causes higher losses than the other parts of the power system. This paper proposes a modified symbiotic organisms search (MSOS) algorithm to solve the NR problem. For the purpose of enhancing the effectiveness of MSOS, the mutualism and parasitism strategies of the original symbiotic organisms search (SOS) have been modified to create better new solutions. In the mutualism strategy, the so-far best solution is updated immediately as soon as new solutions are created. In the parasitism strategy, the update is only implemented for the first half of control variables, whereas another half still remains unchanged. The comparison results between MSOS and SOS on twenty-five benchmark functions and different scales of test distribution systems with 14, 33, 69, and 119 nodes show that the improvement level of MSOS over SOS is significant with higher success rates and better quality of gained solutions. Similarly, MSOS also reaches better results than other methods in the literature. Consequently, MSOS can be a favorable method for determining the most appropriate configurations for the distribution systems.

Existing Issues Associated With Electric Distribution System

2020 ◽  
pp. 32-47
Author(s):  
Sivaraman P. ◽  
Sharmeela C.
Keyword(s):  
Distribution System ◽  
Distribution Systems ◽  
Reactive Power ◽  
Supply Voltage ◽  
Resonance Condition ◽  
End User ◽  
Electric Distribution System ◽  
The Common ◽  
Common Problems ◽  
Electric Distribution

The common problems existing in electric distribution systems are: under voltage; overloading of distribution system components; unbalanced loading; transformer without OLTC operation; improper reactive power compensation; power theft; conversion of 3phase supply into 2phase supply; voltage sag; harmonics and system resonance condition; voltage fluctuations; problem in fault identification; transients; and renewable energy penetration, resulting in functional problems to both distribution power supply company as well as end user. This chapter discusses the various problems in the electric distribution system.

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