<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1815-5901</journal-id>
<journal-title><![CDATA[Ingeniería Energética]]></journal-title>
<abbrev-journal-title><![CDATA[Energética]]></abbrev-journal-title>
<issn>1815-5901</issn>
<publisher>
<publisher-name><![CDATA[Universidad Tecnológica de La Habana José Antonio Echeverría, Cujae]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1815-59012022000200079</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis de la DG en una red eléctrica en Angola basado en el sistema IEEE 14-bus]]></article-title>
<article-title xml:lang="en"><![CDATA[Analysis of the DG in a network in Angola based on the IEEE 14-bus system]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dias Pereira]]></surname>
<given-names><![CDATA[Priscila]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zamboti Fortes]]></surname>
<given-names><![CDATA[Marcio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ary Francisco]]></surname>
<given-names><![CDATA[Delcio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gomes Jr.]]></surname>
<given-names><![CDATA[Sergio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Fluminense Federal University  ]]></institution>
<addr-line><![CDATA[Niterói Rio de Janeiro]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Empresa Nacional de Transporte Eléctrico de Angola  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Angola</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro de Pesquisas em Energía Eléctrica, CEPEL  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2022</year>
</pub-date>
<volume>43</volume>
<numero>2</numero>
<fpage>79</fpage>
<lpage>89</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1815-59012022000200079&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1815-59012022000200079&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1815-59012022000200079&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La Generación Distribuida (DG) se convirtió en la principal inversión de los sistemas energéticos en todo el mundo. Los estudios que se aplican en DG a los países subdesarrollados han demostrado la importancia de aportar soluciones y fomentar el uso de energías renovables a pequeña escala, minimizando las pérdidas en la red energética además de aumentar la seguridad energética a través de la diversificación de las fuentes de generación. Por lo tanto, este trabajo analiza el impacto de DG en un sistema energético real en Angola basado en la prueba IEEE 14-bus, utilizando el software Matlab / Simulink, realizando el análisis del sistema con el apalancamiento de DG, principalmente en situaciones de contingencia. Como resultado se observó que, a pesar de proporcionar un aumento en la capacidad de generación, el inserto DG en la red de distribución provoca cambios en el voltaje del sistema de corte debido al cambio en los flujos activos y reactivos. La situación crítica se detecta cuando hay máxima generación en propagación con carga mínima, pueden producirse modificaciones desequilibradas en los niveles de bus de corte, así como influir en una recuperación del sistema cuando se encuentra en una situación de contingencia. Este documento tiene el objetivo de proporcionar estudios iniciales sobre el impacto causado por la introducción de DG en un sistema energético en Angola, para mostrar las necesidades de preparar el sistema para recibir esta nueva tecnología en colaboración con el desarrollo del país.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Distributed Generation (DG) has become the main investment of power systems worldwide. This work analyzes the impact of DG on a power system in Angola based on the IEEE 14-bus test, using Matlab/Simulink software. As a result, it was noticed that, despite the increase in the generation capacity, DG causes changes in the voltage of the cutting system due to the change in the active and reactive flows. The critical situation is detected when there is maximum generation in scattering with minimum load, and unbalanced changes may occur in the shear levels of the bars, as well as influencing the recovery of the system when subject to a contingency situation. This work aims to provide initial studies on the impact caused by the introduction of DG in Angola, to show the need to prepare the system to receive this new technology in collaboration with the development of the country.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[bidirectional power flow]]></kwd>
<kwd lng="en"><![CDATA[voltage control]]></kwd>
<kwd lng="en"><![CDATA[power generation]]></kwd>
<kwd lng="en"><![CDATA[Matlab]]></kwd>
<kwd lng="es"><![CDATA[flujo de energía bidireccional]]></kwd>
<kwd lng="es"><![CDATA[control de voltaje]]></kwd>
<kwd lng="es"><![CDATA[generación de energía]]></kwd>
<kwd lng="es"><![CDATA[Matlab]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>[1]</label><nlm-citation citation-type="">
<collab>AIPEX</collab>
<source><![CDATA[Forum Internacional sobre Energias Renováveis: Solução para o Desenvolvimento Econômico Sustentável]]></source>
<year>2019</year>
<publisher-loc><![CDATA[Luanda ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B2">
<label>[2]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[PETERS]]></surname>
<given-names><![CDATA[Glen]]></given-names>
</name>
<name>
<surname><![CDATA[Hertwich]]></surname>
<given-names><![CDATA[Edgar]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[CO2 Embodied in International Trade with Implications for Global Climate Policy]]></article-title>
<source><![CDATA[Environmental Science &amp; Technology]]></source>
<year>2008</year>
<volume>42</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1401-7</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>[3]</label><nlm-citation citation-type="">
<collab>IEA - International Energy Agency</collab>
<source><![CDATA[World Energy Outlook]]></source>
<year>2004</year>
</nlm-citation>
</ref>
<ref id="B4">
<label>[4]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[CORRÊA]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Análise do Impacto da Geração Distribuída Fotovoltaica em Sistemas de Distribuição Utilizando Múltiplos Cenários de Geração com Discretização Intra-horária]]></source>
<year>2020</year>
<publisher-loc><![CDATA[Rio de Janeiro ]]></publisher-loc>
<publisher-name><![CDATA[Rio de Janeiro Federal University]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<label>[5]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[VAN Haaren]]></surname>
<given-names><![CDATA[Rob]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Empirical assessment of short&#8208;term variability from utility&#8208;scale solar PV plants]]></article-title>
<source><![CDATA[Progress in Photovoltaics]]></source>
<year>2014</year>
<volume>22</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>548-59</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>[6]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[FARHANGI]]></surname>
<given-names><![CDATA[Hassan]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The path of the smart grid]]></article-title>
<source><![CDATA[IEEE Power and Energy Magazine]]></source>
<year>2009</year>
<volume>8</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>18-28</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>[7]</label><nlm-citation citation-type="">
<collab>IEA - International Energy Agency</collab>
<source><![CDATA[Distributed Generation in Liberalised Electricity Markets]]></source>
<year>2002</year>
</nlm-citation>
</ref>
<ref id="B8">
<label>[8]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[LUCCHESE]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Análise do Impacto da Geração Distribuída Fotovoltaica na Rede Elétrica da Universidade Federal de Santa Maria]]></article-title>
<source><![CDATA[Actas del VII Congresso Brasileiro de Energia Solar]]></source>
<year>2018</year>
<publisher-loc><![CDATA[(Gramado, Brazil ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B9">
<label>[9]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[LEHTONEN]]></surname>
<given-names><![CDATA[Markku]]></given-names>
</name>
<name>
<surname><![CDATA[Nye]]></surname>
<given-names><![CDATA[Sheridan]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[History of electricity network control and distributed generation in the UK and Western Denmark]]></article-title>
<source><![CDATA[Energy Policy]]></source>
<year>2009</year>
<volume>37</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>2238-345</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>[10]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[PORKAR]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Distribution system planning considering integration of distributed generation and load curtailment options in a competitive electricity market]]></article-title>
<source><![CDATA[Electrical Engineering]]></source>
<year>2011</year>
<volume>93</volume>
<page-range>23-32</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>[11]</label><nlm-citation citation-type="">
<collab>REN21</collab>
<source><![CDATA[]]></source>
<year>2019</year>
</nlm-citation>
</ref>
<ref id="B12">
<label>[12]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[TARANTO]]></surname>
<given-names><![CDATA[Glauco]]></given-names>
</name>
</person-group>
<source><![CDATA[Impactos da Difusão da Micro e da Mini Geração no Planejamento, na Operação e na Manutenção do Sistema de Distribuição]]></source>
<year>2017</year>
<publisher-loc><![CDATA[Rio de Janeiro, Brazil ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B13">
<label>[13]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[JENKINS]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<source><![CDATA[Embedded Generation]]></source>
<year>2000</year>
<publisher-loc><![CDATA[London ]]></publisher-loc>
<publisher-name><![CDATA[The Institution of Electrical and Electronics Engineers]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<label>[14]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[JAMALI]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Talvat]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Dynamic fault location method for distribution networks with distributed generation]]></article-title>
<source><![CDATA[Electrical Engineering]]></source>
<year>2010</year>
<volume>92</volume>
<page-range>119-27</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>[15]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[ALI]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimal allocation and sizing of renewable distributed generation using ant lion optimization algorithm]]></article-title>
<source><![CDATA[Electrical Engineering]]></source>
<year>2018</year>
<volume>100</volume>
<page-range>99-109</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>[16]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[LEITE]]></surname>
<given-names><![CDATA[Marcelo]]></given-names>
</name>
<name>
<surname><![CDATA[VIEIRA]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[SILVA]]></surname>
<given-names><![CDATA[Vinicius]]></given-names>
</name>
<name>
<surname><![CDATA[FORTES]]></surname>
<given-names><![CDATA[Marcio]]></given-names>
</name>
<name>
<surname><![CDATA[DIAS]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Harmonic Analysis of a Photovoltaic Systems Connected to Low Voltage Grid]]></article-title>
<source><![CDATA[IEEE Latin America Transactions]]></source>
<year>2018</year>
<volume>16</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>112-7</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>[17]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[BAKHSHINEJAD]]></surname>
<given-names><![CDATA[Alireze]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modeling and simultaneous management of electric vehicle penetration and demand response to improve distribution network performance]]></article-title>
<source><![CDATA[Electrical Engineering]]></source>
<year>2021</year>
<volume>103</volume>
<page-range>325-40</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>[18]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[VALE]]></surname>
<given-names><![CDATA[Alan]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Analysis of the economic viability of a photovoltaic generation project applied to the Brazilian housing program &#8220;Minha Casa Minha Vida]]></article-title>
<source><![CDATA[Energy Policy]]></source>
<year>2017</year>
<volume>108</volume>
<page-range>292-8</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>[19]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[ZAID]]></surname>
<given-names><![CDATA[Al-Tameemi]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Voltage stability enhancement based on DG units]]></article-title>
<source><![CDATA[Electrical Engineering]]></source>
<year>2018</year>
<volume>100</volume>
<page-range>2707-16</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>[20]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[ABDULRAHMAN]]></surname>
<given-names><![CDATA[Ismael]]></given-names>
</name>
<name>
<surname><![CDATA[Radman]]></surname>
<given-names><![CDATA[Ghadir]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Simulink-based programs for power system dynamic analysis]]></article-title>
<source><![CDATA[Electrical Engineering]]></source>
<year>2019</year>
<volume>101</volume>
<page-range>345-56</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
