<?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>0012-7353</journal-id>
<journal-title><![CDATA[DYNA]]></journal-title>
<abbrev-journal-title><![CDATA[Dyna rev.fac.nac.minas]]></abbrev-journal-title>
<issn>0012-7353</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0012-73532019000100281</article-id>
<article-id pub-id-type="doi">10.15446/dyna.v86n208.72886</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[A convex approximation for optimal DER scheduling on unbalanced power distribution networks]]></article-title>
<article-title xml:lang="es"><![CDATA[Una aproximación convexa para la programación óptima de DERs en sistemas de distribución desbalanceados]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Serna-Suárez]]></surname>
<given-names><![CDATA[Iván David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrillo-Caicedo]]></surname>
<given-names><![CDATA[Gilberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morales-España]]></surname>
<given-names><![CDATA[Germán Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de Weerdt]]></surname>
<given-names><![CDATA[Mathijs]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ordóñez-Plata]]></surname>
<given-names><![CDATA[Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Industrial de Santander, Bucaramanga Facultad de Ingenierías Físico-M ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Gerente General, Tecnogestión  ]]></institution>
<addr-line><![CDATA[Bucaramanga ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Energy Research Centre of the Netherlands (ECN part of TNO) Energy Transition Studies ]]></institution>
<addr-line><![CDATA[Amsterdam ]]></addr-line>
<country>Netherlands</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Mathematics and Computer Science, Delft University of Technology Faculty of Engineering ]]></institution>
<addr-line><![CDATA[Delft ]]></addr-line>
<country>Netherlands</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2019</year>
</pub-date>
<volume>86</volume>
<numero>208</numero>
<fpage>281</fpage>
<lpage>291</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0012-73532019000100281&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0012-73532019000100281&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0012-73532019000100281&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The increase of solar photovoltaic penetration poses several challenges for distribution network operation, mainly because such high penetration might cause reliability problems like protection malfunctioning, accelerated decay of voltage regulators and voltage violations. Existing solutions based on mathematical programming solve a 3-phase ACOPF to optimally exploit the available energy, however, this might increase all reliability problems above if done carelessly. As a solution to optimally exploit DERs (like local photovoltaic and storage systems) without compromising the network reliability, this paper presents a novel algorithm to solve the 3-phase ACOPF as a sequence of convex Quadratically Constrained Quadratic Programs. Results show that this solution has a lower voltage unbalance and computation time than its non-linear counterpart, furthermore, it converges to a primal feasible point for the non-linear formulation without major sacrifices on optimal DER active power injections.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El incremento de la penetración de energía solar fotovoltaica presenta varios retos para la operación de redes de distribución, principalmente porque tales penetraciones pueden causar problemas en la confiabilidad tales como mal funcionamiento de protecciones, desgaste acelerado de reguladores de tensión y violaciones de tensión. Soluciones existentes basadas en programación matemática resuelven ACOPF trifásicos para explotar de manera óptima la energía disponible, sin embargo, esto puede incrementar los problemas de confiabilidad si no es realizado cuidadosamente. Como una solución para explotar de manera óptima DERs (como sistemas locales de energía fotovoltaica y almacenamiento) sin comprometer la confiabilidad de la red, se presenta un novedoso algoritmo que resuelve el ACOPF trifásico como una secuencia de problemas de Programación Cuadrática Cuadráticamente Restringido convexos. Los resultados muestran que esta solución presenta menor desbalance de tensión y tiempo de computo que su contraparte no-lineal, es más, converge a un punto factible para el problema primal de la formulación no-lineal sin mayores sacrificios en las inyecciones óptimas de potencia activa de los DERs.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[optimal power flow]]></kwd>
<kwd lng="en"><![CDATA[power distribution networks]]></kwd>
<kwd lng="en"><![CDATA[DER scheduling]]></kwd>
<kwd lng="en"><![CDATA[quadratic constrained quadratic programming]]></kwd>
<kwd lng="en"><![CDATA[renewable energy]]></kwd>
<kwd lng="en"><![CDATA[storage systems]]></kwd>
<kwd lng="es"><![CDATA[flujo óptimo de potencia]]></kwd>
<kwd lng="es"><![CDATA[sistemas de distribución]]></kwd>
<kwd lng="es"><![CDATA[programación de DERs]]></kwd>
<kwd lng="es"><![CDATA[programación cuadrática cuadráticamente restringida]]></kwd>
<kwd lng="es"><![CDATA[energías renovables]]></kwd>
<kwd lng="es"><![CDATA[sistemas de almacenamiento]]></kwd>
</kwd-group>
</article-meta>
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