Estimación de la temperatura de punto caliente en transformadores de potencia inmersos en aceite mineral utilizando regresión con vectores de soporte

Cerón, Andrés F; Lozano, Roque A.; Aponte, Guillermo; Romero, A. A.

doi:10.4067/s0718-07642020000400035

Cited by 3 publications

(4 citation statements)

References 12 publications

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“…Step 7. Estimation of the hot spot temperature profile from the profiles obtained in the previous step using the methodology described in [15,24] based on (1) and (2).…”

Section: New Multi-period Replacement Optimization Methodologymentioning

confidence: 99%

“…Interpolation and extrapolation of the load and ambient temperature profiles, completing the information for the future analysis period by using NLPCA. Step 7 . Estimation of the hot spot temperature profile from the profiles obtained in the previous step using the methodology described in [15, 24] based on (1) and (2). Step 8 . Estimation of the oil moisture profile for the analysis period defined in step 6.…”

Section: Problem Description and Proposed Methodologymentioning

confidence: 99%

“…The estimation of the Hot Spot is achieved by solving the differential Equations ( 1) and ( 2) [15,[19][20][21]24]. The first represents the temperature of the oil at the top of the transformer θ TO and the second, the temperature of the hottest spot θ HS .…”

Section: Hot Spot Temperaturementioning

confidence: 99%

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Methodology for scheduling long‐term replacement of aging power transformers, considering risk

Piamba

Romero

Mayor

2023

IET Generation Trans & Dist

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This article presents an optimization methodology to schedule the replacement of power transformers (PT) into a fleet. The objective is the minimization of the summation of the risk indices of the PT. Each PT risk index is calculated from the estimation of the life used and the strategic importance of the unit. The PT life used is estimated as a relationship of the solid insulation polymerization degree, where aging processes due to oxidation, hydrolysis, and pyrolysis are considered from the calendar date when the unit starts its operation until different future scenarios. For the calculation of the PT strategic importance, financial, security, environmental, and network performance aspects are considered. Then, using the optimization model, together with the CAPEX and the available budget over a planning time, a strategy for optimally replacing the critical units is determined. The model was applied for a group of 102 units, demonstrating its applicability and effectiveness. The developed methodology serves to support the manager of these assets in making decisions in the long term.

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“…Step 7. Estimation of the hot spot temperature profile from the profiles obtained in the previous step using the methodology described in [15,24] based on (1) and (2).…”

Section: New Multi-period Replacement Optimization Methodologymentioning

confidence: 99%

Section: Problem Description and Proposed Methodologymentioning

confidence: 99%

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Methodology for scheduling long‐term replacement of aging power transformers, considering risk

Piamba

Romero

Mayor

2023

IET Generation Trans & Dist

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“…Las simulaciones validadas requieren la comprensión física detallada de los fenómenos electromagnéticos y la sensibilidad de los parámetros y variables que intervienen en las pruebas (Curcanu et al, 2007;Delgado et al, 2017;Parise y Scarpino, 2021), así como de exigentes requerimientos de validación por parte de los laboratorios, lo que dificulta su aplicación. Además, las simulaciones requieren el desarrollo de modelos complejos de los componentes del sistema y equipos bajo prueba como transformadores (Aponte et al, 2011;Cerón et al, 2020;Pires Corrêa y Teles Vieira, 2021), interruptores (Chmielewski et al, 2017;Szulborski et al, 2021), entre otros. En el caso del suroccidente colombiano se realizó la validación de un software mediante mediciones realizadas en laboratorio (Díaz et al, 2016).…”

Section: Otros Antecedentesunclassified

Importancia estratégica de un sistema de alta corriente en baja tensión en el sector eléctrico Colombiano

Aponte-Mayor

Gómez-Luna

Jaramillo³

2023

Inf. tecnol.

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En este estudio se analiza la importancia del desarrollo de un sistema de alta corriente, con capacidad de hasta 65 kA y 1 kV, para pruebas sobre equipos eléctricos en baja tensión en el sector eléctrico colombiano. Se revisaron los desarrollos de sistemas de alta corriente a nivel nacional e internacional, con lo que se evidenció la pertinencia del proyecto en el sector eléctrico colombiano. Los componentes del sistema de alta corriente propuesto se definen así: transformadores toroidales (fuente de alta corriente), sistema metrológico, sistema de control y sistema de protecciones. Con la implementación de este sistema, se fortalece la investigación y el desarrollo experimental en equipos como tableros eléctricos de baja tensión, celdas eléctricas de media tensión y transformadores. En conclusión, la construcción del sistema de pruebas de alta corriente por parte de IGT S.A.S., con apoyo de la Universidad del Valle, aumenta las capacidades científicas y tecnológicas del sector eléctrico colombiano.Palabras clave: equipos de alta corriente; pruebas en baja tensión; sistemas de inyección de corriente; sistemas de baja tensión; sector eléctrico colombiano

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Condition Assessment of Medium Voltage Assets: A Review

Mesino,

Caicedo,

Mamaní

et al. 2023

Adv. sci. technol. eng. syst. j.

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Condition assessment of medium voltage assets is essential to ensure reliability and costeffective operation of power distribution networks. This article presents a literature review of condition assessment of medium voltage assets related to a distribution system in a noninterconnected zone in Colombia, namely, power transformers, photovoltaic systems, switchgear, lines and cables, and instrument transformers. Advanced search rules are formulated to obtain bibliographic records of relevant academic literature from the database Scopus. The retrieved data are analyzed quantitatively to provide insights on the current state of research on the topic. Next, the most relevant academic papers for each medium voltage asset are selected and analyzed in a critical review along with more diverse literature including standards, technical reports, and white papers obtained through complementary searches. The results of the review show that several approaches have been formulated for condition assessment of medium voltage assets, ranging from traditional diagnostic methods to advanced artificial intelligence-based approaches. Moreover, research on some assets is already mature including power transformers, and photovoltaic systems, whereas other assets have been incipiently studied such as distribution and instrument transformers. Therefore, the need for deeper condition assessment research for these critical assets is highlighted. Research gaps are identified in the standardization and integration of condition assessment tools for distribution system operators.

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Estimación de la temperatura de punto caliente en transformadores de potencia inmersos en aceite mineral utilizando regresión con vectores de soporte

Abstract: Estimación de la temperatura de punto caliente en transformadores de potencia inmersos en aceite mineral Cerón

Cited by 3 publications

References 12 publications

Methodology for scheduling long‐term replacement of aging power transformers, considering risk

Methodology for scheduling long‐term replacement of aging power transformers, considering risk

Importancia estratégica de un sistema de alta corriente en baja tensión en el sector eléctrico Colombiano

Condition Assessment of Medium Voltage Assets: A Review

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