Sergio Rivera
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Sergio Rivera has a total of 3 co-authors. Here are the top co-authors by number of shared publications:
- Andres Arturo Romero
Universidad Nacional de San Juan
1 shared publication - Gustavo Coria
Universidad Nacional de San Juan
1 shared publication - Jefferson Zuñiga Balanta
Electrical Engineering Institute (IEE), National University of San Juan (UNSJ), CONICET, Av. Libertador Gral. San Martín 1109, San Juan J5400, Argentina
1 shared publication
Latest Publications
- Open Access
Planning and Optimizing the Replacement Strategies of Power Transformers: Literature Review
The power transformer is one of the most critical assets in power systems; therefore, planning and optimizing the economic investment for its replacement is crucial for the financial efficiency of the utility. A compilation of the main approaches reported in the literature for the replacement of oil-immersed power transformers is presented in this article. A chronological description of procedures presented in the literature for the determination of risk index, useful life evaluation, and transformer replacements is provided. Methodologies that use the theoretical basis of the degree of polymerization of the solid insulation of the units through the oxidation aging process to estimate their condition bring together the best tools currently available to achieve this objective. However, it is important and pertinent to complement these methodologies by considering the aging processes by pyrolysis and hydrolysis together and by incorporating economic analyses for appropriate replacement and management of these aged units.
Open AccessPlanning and Optimizing the Replacement Strategies of Power Transformers: Literature Review
The power transformer is one of the most critical assets in power systems; therefore, planning and optimizing the economic investment for its replacement is crucial for the financial efficiency of the utility. A compilation of the main approaches reported in the literature for the replacement of oil-immersed power transformers is presented in this article. A chronological description of procedures presented in the literature for the determination of risk index, useful life evaluation, and transformer replacements is provided. Methodologies that use the theoretical basis of the degree of polymerization of the solid insulation of the units through the oxidation aging process to estimate their condition bring together the best tools currently available to achieve this objective. However, it is important and pertinent to complement these methodologies by considering the aging processes by pyrolysis and hydrolysis together and by incorporating economic analyses for appropriate replacement and management of these aged units.