http://hdl.handle.net/11336/9 Articulos de INSTITUTO DE ENERGIA ELECTRICA Fri, 14 Jun 2024 23:04:59 GMT 2024-06-14T23:04:59Z http://hdl.handle.net/11336/231991 Bayesian Entropy Methodology: A Novel Approach to Setting Anti-Islanding Protections with Enhanced Stability and Sensibility Seguin Batadi, Eduardo Marcelo; Martinez, Maximiliano; Molina, Marcelo Gustavo The risk of unintentional islanding creation in distributed energy systems poses a significant security concern since unintentional islanding formation could lead to a supply of energy outside of the optimal quality limits. This constitutes a risk for users, maintenance personnel, infrastructure, and devices. To mitigate this problem, anti-islanding protections are widely used to prevent the distributed generator from feeding a portion of the radial distribution grid when a protection device trips upstream. However, the effectiveness of these protections heavily relies on properly tuning protection setting thresholds (such as time delay and pickup). This work proposes a novel approach that utilizes entropy as a model and metric of the uncertainty associated with a particular protection setting. By minimizing entropy, the proposed method aims to improve stability and sensitivity, consequently improving the overall performance of anti-islanding protection. Simulation results demonstrate that the Bayesian entropy methodology (BEM) approach achieves enhanced stability in various scenarios, including frequency transients, and demonstrates a notable reduction in the size of the dataset and computational burden, ranging between 91% and 98%, when compared to related works, with an improvement of the uncertainty achieved. The findings of this study contribute to the development of more robust and reliable anti-islanding protections. Fri, 01 Dec 2023 00:00:00 GMT http://hdl.handle.net/11336/231991 2023-12-01T00:00:00Z http://hdl.handle.net/11336/231542 Oportunidades y desafíos en la planificación de la transmisión zonal de Chile considerando particularidades del sistema de distribución; Challenges and opportunities of zonal transmission planning in Chile considering particularities of the distribution system Altamirano, Diego; Samper, Mauricio Eduardo; García Santander, Luis; Quiroz, Diego; Salazar, Eduardo; Jurado Egas, Mauro Fabricio; Oro, Mariano; Rodriguez, Luis Leopoldo; Roa, Claudio El desarrollo de nuevas tecnologías y usos de la energía eléctrica, como los recursos energéticos distribuidos, plantean nuevos desafíos y oportunidades de negocio para la industria eléctrica. Ello en pro de realizar un mejor uso de la información para que las empresas puedan gestionar de forma eficiente sus activos (minimizando los costes de inversión y operación, mejorando a su vez la calidad del servicio) y que los usuarios gestionen racionalmente su demanda (haciendo un uso eficiente de los recursos energéticos disponibles). En este sentido, Chile está experimentando un cambio de paradigma en el sector eléctrico, buscando principalmente mejorar la eficiencia energética. En este trabajo se presenta un análisis de las principales problemáticas de los recursos presentes en los Sistemas de Distribución Eléctrica, y se proponen algunas métricas con el fin de que estos sean considerados como insumos (inputs) en los modelos de Planificación de la Transmisión, específicamente en la Transmisión Zonal (o subtransmisión) en Chile.; The development of new technologies and uses of electrical energy, such as distributed energy resources, pose new challenges and business opportunities for the electricity industry. In favor of making better use of information so that companies can efficiently manage their assets (minimizing investment and operating costs while improving service quality) and users rationally managing their demand (making efficient use of available energy resources). In this sense, Chile is experiencing a paradigm shift in the electricity sector, mainly seeking to improve energy efficiency. In this work, a survey of particularities and problems of the Electricity Distribution Systems is carried out so that these are considered as inputs in the Transmission Planning models used in Chile, specifically of the Zonal Transmission. Wed, 01 Mar 2023 00:00:00 GMT http://hdl.handle.net/11336/231542 2023-03-01T00:00:00Z http://hdl.handle.net/11336/231511 Development of Control Techniques for AC Microgrids: A Critical Assessment Cárdenas, Pabel Alberto; Martinez, Maximiliano; Molina, Marcelo Gustavo; Mercado, Pedro Enrique This article aims to provide a comprehensive review of control strategies for AC microgrids (MG) and presents a confidently designed hierarchical control approach divided into different levels. These levels are specifically designed to perform functions based on the MG’s mode of operation, such as grid-connected or islanded mode. The primary control ensures frequency (f) and voltage (V) stability, whereas the secondary control adjusts their values to their references and the tertiary control efficiently manages the power of distributed generators (DGs) in a cost-effective manner. The article extensively discusses centralized, decentralized, and distributed strategies for each control level, highlighting their differences, advantages, disadvantages, and areas of application. Finally, the usefulness of different control strategies at different levels is demonstrated through practical examples. Sun, 01 Oct 2023 00:00:00 GMT http://hdl.handle.net/11336/231511 2023-10-01T00:00:00Z http://hdl.handle.net/11336/231465 Determination of required instantaneous power reserve for power system inertia enhancement, based on the unit commitment Leiva Roca, Daniel Alejandro; Mercado, Pedro Enrique; Suvire, Gaston Orlando The increase of renewable energy sources has favored the connection of new non-conventional generation technologies in electrical power systems. Many of these technologies are connected to the network by means of power electronics causing, among other problems, reduction of the inertia constant of the power system, to the detriment of frequency stability. There are different alternatives to improve the inertial response, but an instantaneous power reserve is always needed. The adequate instantaneous power reserve depends on the mix of dispatched generators. Thus, a flexible tool for determining the required instantaneous power reserve for the day-ahead operation is developed in this work. Obtained results show that the developed tool calculates the required power reserve with great accuracy and speed. Therefore, it serves as support for decision-making regarding instantaneous power reserve dispatch. Sat, 01 Jul 2023 00:00:00 GMT http://hdl.handle.net/11336/231465 2023-07-01T00:00:00Z