{"id":96017,"date":"2018-03-11T10:16:08","date_gmt":"2018-03-11T10:16:08","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/probabilistic-modelling-in-normal-operation-and-the-control-of-distribution-systems-with-renewable-source-based-dg-units\/"},"modified":"2018-03-11T10:16:08","modified_gmt":"2018-03-11T10:16:08","slug":"probabilistic-modelling-in-normal-operation-and-the-control-of-distribution-systems-with-renewable-source-based-dg-units","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ingenieria-y-tecnologia-electricas\/probabilistic-modelling-in-normal-operation-and-the-control-of-distribution-systems-with-renewable-source-based-dg-units\/","title":{"rendered":"Probabilistic modelling in normal operation and the control of distribution systems with renewable source based dg units"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Roberto Villaf\u00e1fila Robles <\/strong><\/h2>\n<p>Power systems are changing due  to  economic. Social , political and environmental lacts. On  the other hand. Technological  improvements have permitted  he deployment 01  new  type 01  generators within  power systems. Aboye all at distribution  networks. Such new generators connected al distribution  networks are  know as emph{distributed generation  (dg)) . This means a shift irom  traditional vertical  to horizontal power systems. Moreover, mosl 01  his new generation  is  based on renewable  sources and  then, non-completely dispatchable due  to  their output powers vary stochastically according  to  heir prime mover  furthermore. As distribution networks are spread out over  limi1ed area. 1he dependence be1ween the such generators may have a  significative impact.  la  large-scale  integration 01 dg  units  in  distribution systems might affect distribution network operators on  their daily routine. Apart  irom non\u00c2\u00ad ~ispatchable dg and  their dependencies.  Loads have a stochastic behavior,  too. This situation needs a new approach in modeling in order to  take  into  ilccount the  inherent uncertainty 01 such elements on  power system operation and  planning  lor assessing a proper power quali1y in steady-state  pperation  traditional deterministic analysis  is  limited when  there  is uncertainty beca use  it only considers snapshots 01  the systems. On  the other hand.  probabilistic analysis provide a better understanding 01  uncertainty and  its  risk  because variables are represented by  probability lunctions.  irhe present dissertation analyzes  the  probabilistic modeling 01 stochastic generators and  their  impact on  distribution power systems,  and  has  three  main contributions.  Firstly,  an  improving deterministic approach  lor analyzing distribution systems with  renewable source based dg  units, namely wind  power.  Secondly,  the modeling 01 stochastic generation and  loads, and  their correlation  is discussed and  performed. Finally. A monte cario simulation  is  performed  to assess  the  impact on  voltage profile  in  a real  distribution system with dg  units. And a control 01 voltage with  the collaboration of dg units  is  proposed.  irhe first contribution describes a new algorithm  that  improves deterministic load  fiow  lor distribution systems where several  types of wind  turbines are  onnected.  The effects on  voltage profile and  power generation 01 wind  turbines are analyzed  through  simulations  in  a test  network. The  results show  hat reactive power 01  fixed-speed wind  turbines  is  sensitive  to voltage variations at  the  point 01  connection.  On  the other hand,  it is demonstrated  that  dg  units can  reduce power  losses.  irhe second contribution discuses the  probabilistic modeling 01 generation and  load  in  normal operation.  Linearization.  Norma  lit  y and  independence  have been  usual assumptions lor probabilistic anal ysis.  This might  lead  to an  underestimation 01  the  impacts. On  one  hand. Monte cario method avoid  linearization 01  load  flow equations. On  the other hand. Methods as joint normal  translorm and  extreme stochastic bounds permit to  estimate  ~ependence  between  random variables.  Even  though when  the correlations are not  linear, as  it is  the case 01 wind  power. Former lacts have been  ested and  used  lor the probabilistic modeling 01  a real distribution system with dg units.  irhe final  contribution deals with  the control 01 voltage in distribution networks in normal operation. Traditionally.  Distribution network operators control  ftoltage in normal by tap-changers  installed at translormers considering voltage drop effect. However, dg units changes voltage profile and  tap\u00c2\u00ad hangers may be affected. In order to avoid possible interferences wi th on-ioad  tap-changer operation. A droop control  strategy 01  reactive power 01 dg  units in coordination with  the tap-changer operation  is proposed and  simulated. It  results  in  a flat  voltage profile. Later. It  is proposed and  tested  that dg  units provide voltage support lor limiting tap-changer operations.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Probabilistic modelling in normal operation and the control of distribution systems with renewable source based dg units<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Probabilistic modelling in normal operation and the control of distribution systems with renewable source based dg units <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Roberto Villaf\u00e1fila Robles <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de catalunya<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 18\/09\/2009<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Andreas Sumper<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: mircea Chindris <\/li>\n<li>alfred Rufer (vocal)<\/li>\n<li>sergio Herraiz jaramillo (vocal)<\/li>\n<li>antoni Sudria andreu (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Roberto Villaf\u00e1fila Robles Power systems are changing due to economic. Social , political and environmental lacts. On [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[8096,15596,8098],"tags":[197298,145543,118106,145545,197297,56195],"class_list":["post-96017","post","type-post","status-publish","format-standard","hentry","category-ingenieria-y-tecnologia-electricas","category-politecnica-de-catalunya","category-transmision-y-distribucion-electrica","tag-alfred-rufer","tag-andreas-sumper","tag-antoni-sudria-andreu","tag-mircea-chindris","tag-roberto-villafafila-robles","tag-sergio-herraiz-jaramillo"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/96017","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=96017"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/96017\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=96017"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=96017"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=96017"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}