An Improved Equilibrium Optimizer for Optimal Placement of Distributed Generators in Distribution Systems Considering Harmonic Distortion Limits

Author:

Pham Thai Dinh1,Nguyen Thang Trung2ORCID,Le Chi Kien1

Affiliation:

1. Ho Chi Minh City University of Technical Education: Ho Chi Minh City University of Technology and Education

2. Ton Duc Thang University

Abstract

Abstract This paper proposes an improved equilibrium optimizer (IEO) for determining optimal location and effective size of distributed generation units (DGUs) in the distribution systems in order to minimize the total power loss on distribution branches, investment cost, and operation and maintenance cost. To reach good solutions of DGUs placement, limits regarding voltage, current and harmonic flows are also seriously concerned and they must be satisfied exactly within a predetermined range. Especially, individual harmonic distortion (IHD) and total harmonic distortion (THD) of bus voltage must falls into IEEE Std. 519. The proposed IEO is developed from the original equilibrium optimizer (EO), which was motivated by control volume mass balance models. This novel algorithm can effectively expand the search area and avoid the premature convergence to low quality solution spaces. With the determined solutions from IEO, not only are the voltages well improved, but also the harmonics are mitigated from the offending values down to the allowable values of IEEE Std. 519. Moreover, the total power loss is significantly reduced from 0.2110 MW to 0.0815 MW, 0.2245 MW to 0.07197 MW and 0.3161 MW to 0.1515 MW for IEEE 33-bus, IEEE 69-bus and IEEE 85-bus radial distribution systems, respectively. Not only that, the total cost of DGUs is also more economical and consumes only $3.4753 million, $3.2840 million and $3.0593 million corresponding to the three systems for a 20-year planning period. The performance of the proposed algorithm is compared to three other implemented methods consisting of artificial bee colony (ABC) algorithm, salp swarm algorithm (SSA) and EO, and eight previously published methods for the three test systems. The comparisons of results imply that IEO is better than other methods in terms of performance, stability and convergence characteristic.

Publisher

Research Square Platform LLC

Reference38 articles.

1. Optimal Harmonic Mitigation in Distribution Systems with Inverter Based Distributed Generation;Abbas AS;Applied Sciences,2021

2. Optimal location and sizing of distributed generators based on renewable energy sources using modified moth flame optimization technique;Elattar EE;IEEE Access,2020

3. Optimal size and location of PV based DG-unit in transmission system using GA method for loss reduction;Mosbah M;Journal of Electrical Engineering,2017

4. Optimum placement and sizing of DGs considering average hourly variations of load;Gampa SR;Int J Electr Power Energy Syst,2015

5. Operation of distribution network with optimal placement and sizing of dispatchable DGs and shunt capacitors;Das S;Renew Sustain Energy Rev,2019

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3