{"id":49599,"date":"2025-09-18T07:49:30","date_gmt":"2025-09-18T07:49:30","guid":{"rendered":"https:\/\/becolve.com\/casos-exito\/iiot-e-analise-preditiva-de-ativos-para-reduzir-avarias\/"},"modified":"2025-09-18T07:49:30","modified_gmt":"2025-09-18T07:49:30","slug":"iiot-e-analise-preditiva-de-ativos-para-reduzir-avarias","status":"publish","type":"casos-exito","link":"https:\/\/becolve.com\/pt-pt\/casos-exito\/iiot-e-analise-preditiva-de-ativos-para-reduzir-avarias\/","title":{"rendered":"IIoT e an\u00e1lise preditiva de ativos para reduzir avarias"},"content":{"rendered":"<p>A Duke Energy \u00e9 um dos maiores cons\u00f3rcios de energia el\u00e9trica dos Estados Unidos, prestando servi\u00e7o a 7,2 milh\u00f5es de clientes retalhistas nos Estados Unidos e com uma capacidade de gera\u00e7\u00e3o el\u00e9trica de 58 000 MW.<\/p>\n<p>A Duke Energy teve uma <strong>avaria num transformador<\/strong> que propiciou avarias em cascata noutros transformadores e em duas turbinas, causando danos superiores a <strong>10 milh\u00f5es de d\u00f3lares<\/strong>.<\/p>\n<blockquote><p>Os analistas de dados da Duke Energy dedicam 80% do seu tempo a recolher dados e apenas 20% do seu tempo a analis\u00e1-los.<\/p><\/blockquote>\n<p> Os seus procedimentos gerais de an\u00e1lise apresentavam diagn\u00f3sticos inconsistentes e avalia\u00e7\u00f5es de riscos limitadas, dando origem a grandes perdas econ\u00f3micas.<\/p>\n<h3>SOLU\u00c7\u00c3O PROPOSTA<\/h3>\n<p>Para <strong>controlar os ativos cr\u00edticos durante o espa\u00e7o de tempo entre as inspe\u00e7\u00f5es<\/strong>, a engenharia determinou que era necess\u00e1ria uma monitoriza\u00e7\u00e3o cont\u00ednua em tempo real.<\/p>\n<p><strong>O PRiSM Predictive Asset Analytics<\/strong> foi implementado como parte do programa <strong>Smart Gen da Duke Energy<\/strong>.<\/p>\n<p>O PRiSM \u00e9 um <strong>software para a an\u00e1lise preditiva dos ativos<\/strong>, permite modelar o comportamento \u00f3timo e normal de um ativo mediante a an\u00e1lise de dados hist\u00f3ricos e, uma vez em produ\u00e7\u00e3o, pode detetar quando o equipamento se est\u00e1 a desviar do seu intervalo de opera\u00e7\u00e3o normal.<\/p>\n<blockquote><p>Com o PRiSM, \u00e9 poss\u00edvel planear atempadamente as interven\u00e7\u00f5es para minimizar o impacto na produ\u00e7\u00e3o, mas tamb\u00e9m para corrigir uma situa\u00e7\u00e3o antes que ocorra um dano significativo.<\/p><\/blockquote>\n<p> Estas diverg\u00eancias fornecem alarmes que podem alertar os clientes dias, semanas ou at\u00e9 meses <strong>antes que ocorra um problema importante<\/strong>.<\/p>\n<h4>1. Perda de efici\u00eancia da turbina a vapor<\/h4>\n<ul>\n<li>O PRiSM lan\u00e7ou um <strong>alarme por baixa temperatura<\/strong> <strong>do vapor<\/strong> de extra\u00e7\u00e3o.<\/li>\n<li>Grande quantidade de <strong>combust\u00edvel adicional<\/strong> queimado durante 8 dias.<\/li>\n<li><strong>Poderia ter passado um m\u00eas<\/strong> ou mais antes que a central detetasse o problema.<\/li>\n<\/ul>\n<h4>2. Problema na veda\u00e7\u00e3o do cojinete<\/h4>\n<p><strong>Observa\u00e7\u00e3o<\/strong><\/p>\n<ul>\n<li>Observam-se <strong>picos na temperatura do metal<\/strong> dos cojinetes das turbinas de baixa press\u00e3o.<\/li>\n<\/ul>\n<p><strong>Resultados<\/strong><\/p>\n<ul>\n<li>A <strong>inspe\u00e7\u00e3o in situ<\/strong> detetou um dep\u00f3sito de \u00f3leo com metade de \u00e1gua e metade de \u00f3leo.<\/li>\n<li>A <strong>equipa de engenheiros detetou<\/strong> que as v\u00e1lvulas intrincadas forneciam demasiada press\u00e3o \u00e0s juntas, o que provocava que a \u00e1gua flu\u00edsse para os cojinetes.<\/li>\n<\/ul>\n<h4>3. Rotor \u201cLow Presure\u201d &#8211; Problema nas p\u00e1s L-0<\/h4>\n<ul>\n<li>A unidade <strong>foi colocada em servi\u00e7o ap\u00f3s uma \u201coutage\u201d<\/strong> e houve uma altera\u00e7\u00e3o nas vibra\u00e7\u00f5es dos cojinetes de uma das turbinas de \u201cLow Presure\u201d (os n\u00edveis de vibra\u00e7\u00e3o estavam muito abaixo do n\u00edvel de alarme).<\/li>\n<li>A <strong>anomalia foi notificada<\/strong> \u00e0 equipa de engenheiros e ao pessoal da central.<\/li>\n<li><strong>Foram recolhidos dados das vibra\u00e7\u00f5es<\/strong> e o equipamento foi retirado para inspe\u00e7\u00e3o.<\/li>\n<li>Os <strong>parafusos da metade inferior<\/strong> do manguito de fluxo tinham-se partido e o manguito contactava com as p\u00e1s L-0.<\/li>\n<li>A <strong>metade superior do manguito<\/strong> j\u00e1 n\u00e3o era sustentada pela metade inferior.<\/li>\n<li>Embora tenham ocorrido danos menores nas p\u00e1s \u201cLow Presure\u201d, <strong>evitou-se danificar<\/strong> m\u00faltiplas etapas de p\u00e1s, empanques e diafragmas se tivesse havido uma liberta\u00e7\u00e3o da p\u00e1.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"featured_media":23433,"menu_order":0,"template":"","categories":[966],"arquitectura":[1846],"area":[187],"sector":[192],"productos-tax":[118],"soluciones-tax":[224],"marcas-tax":[],"class_list":["post-49599","casos-exito","type-casos-exito","status-publish","has-post-thumbnail","hentry","category-manutencao-de-ativos","arquitectura-manutencao-avancada","area-industrial-pt-pt","sector-energia-pt-pt","productos-tax-aveva-predictive-analytics","soluciones-tax-predictive-analytics-pt-pt"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>IIoT e an\u00e1lise preditiva de ativos para reduzir avarias | Caso de \u00e9xito<\/title>\n<meta name=\"description\" content=\"A Becolve fornece \u00e0 Duke Energy IIoT e an\u00e1lise preditiva 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