A global harmony search algorithm for finding optimal capacitor location and size in distribution networks

Sirjani, Reza; Bade, Melkamu G.

doi:10.1007/s11771-015-2693-5

Cited by 10 publications

(7 citation statements)

References 39 publications

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“…Even so, the figures confirm the acceptable performance of the proposed DLSA in solving this problem. Based on the harmonic power flow presented in [32], the harmonic distortion of voltage in each bus after capacitor placement was calculated. As even and triplen harmonic orders are often not present in wind power plants; the harmonic orders h = 5, 7, 11, 13, 17, 19, and 23 were considered, and the equivalent circuit in Figure 3 was applied.…”

Section: Case Study and Resultsmentioning

confidence: 99%

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Optimal Capacitor Placement in Wind Farms by Considering Harmonics Using Discrete Lightning Search Algorithm

Sirjani¹

2017

Sustainability

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Currently, many wind farms exist throughout the world and, in some cases, supply a significant portion of energy to networks. However, numerous uncertainties remain with respect to the amount of energy generated by wind turbines and other sophisticated operational aspects, such as voltage and reactive power management, which requires further development and consideration. To fix the problem of poor reactive power compensation in wind farms, optimal capacitor placement has been proposed in existing wind farms as a simple and relatively inexpensive method. However, the use of induction generators, transformers, and additional capacitors represent potential problems for the harmonics of a system and therefore must be taken into account at wind farms. The optimal location and size of capacitors at buses of an 80-MW wind farm were determined according to modelled wind speed, system equivalent circuits, and harmonics in order to minimize energy losses, optimize reactive power and reduce the management costs. The discrete version of the lightning search algorithm (DLSA) is a powerful and flexible nature-inspired optimization technique that was developed and implemented herein for optimal capacitor placement in wind farms. The obtained results are compared with the results of the genetic algorithm (GA) and the discrete harmony search algorithm (DHSA).

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Section: Case Study and Resultsmentioning

confidence: 99%

“…The procedures applied in this study for calculating the power flow and the harmonic power flow in the distribution system are presented in detail in [32]. The procedures for the proposed DLSA method for optimal capacitor placement in wind farms considering harmonics are shown in Figure 4 as a flowchart.…”

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confidence: 99%

Optimal Capacitor Placement in Wind Farms by Considering Harmonics Using Discrete Lightning Search Algorithm

Sirjani¹

2017

Sustainability

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“…A global harmony search was used to locate the optimal solution for capacitor banks in the radial distribution systems [7]. The objectives were to reduce power losses, operating cost and improve voltage profile.…”

Section: Related Workmentioning

confidence: 99%

“…In distribution systems, capacitor banks and harmonic filters are used to meet the standards of power quality. Although Flexible AC Transmission Systems (FACTS) devices such as Static Var Compensator (SVC) and Static Synchronous Compensator (STATCOM) are used to improve power quality issues, capacitor banks are a more common option and a practical technique to improve voltage profile and reduce power losses [4], [7], [8]. The costs to construct and maintain capacitor banks are low compared with other devices [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Mitigation of power quality issues in distribution systems using harmonic filters and capacitor banks

et al. 2021

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Due to increased load demand, the power system developers are encouraged to meet power quality requirements. Using harmonic filter and capacitor bank is one of the essential solutions in mitigating power quality issues. This research aims to mitigate harmonics and improve the voltage in distribution systems by using ETAP. For this purpose, a distribution system in Homs city is considered, which is a part of Syrian power system. The capacitor banks are designed using numerical analysis and Optimal Capacitor Placement (OCP). The results indicate that this approach enhances the voltage profile, which is reflected in some buses. The voltage profile is effectively improved on several buses, and power losses are significantly reduced. The Total Harmonic Distortions (THDs) and Individual Harmonic Distortions (IHDs) of the subjected buses are reduced. Moreover, the power factor is improved from 0.877 to 0.926 for the studied system.

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“…Therefore, the optimal locations and sizes of capacitors have been considered as an optimization problem [9]. Many of previous studies have been done for OCP problem using multiple objective functions and different intelligent algorithms as in references [10][11][12][13][14]. Some of these studies suffer from bus voltage and capacitor size constraints were not achieved.…”

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confidence: 99%

Dual technique of reconfiguration and capacitor placement for distribution system

Kadom¹,

Hussain²,

Al-Jubori³

2020

IJECE

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Radial Distribution System (RDS) suffer from high real power losses and lower bus voltages. Distribution System Reconfiguration (DSR) and Optimal Capacitor Placement (OCP) techniques are ones of the most economic and efficient approaches for loss reduction and voltage profile improvement while satisfy RDS constraints. The advantages of these two approaches can be concentrated using of both techniques together. In this study two techniques are used in different ways. First, the DSR technique is applied individually. Second, the dual technique has been adopted of DSR followed by OCP in order to identify the technique that provides the most eﬀective performance. Three optimization algorithms have been used to obtain the optimal design in individual and dual technique. Two IEEE case studies (33bus, and 69 bus) used to check the effectiveness of proposed approaches. A Direct Backward Forward Sweep Method (DBFSM) has been used in order to calculate the total losses and voltage of each bus. Results show the capability of the proposed dual technique using Modified Biogeography Based Optimization (MBBO) algorithm to find the optimal solution for significant loss reduction and voltage profile enhancement. In addition, comparisons with literature works done to show the superiority of proposed algorithms in both techniques.

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A global harmony search algorithm for finding optimal capacitor location and size in distribution networks

Cited by 10 publications

References 39 publications

Optimal Capacitor Placement in Wind Farms by Considering Harmonics Using Discrete Lightning Search Algorithm

Optimal Capacitor Placement in Wind Farms by Considering Harmonics Using Discrete Lightning Search Algorithm

Mitigation of power quality issues in distribution systems using harmonic filters and capacitor banks

Dual technique of reconfiguration and capacitor placement for distribution system

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