Leony Ortiz - Academia.edu (original) (raw)

Papers by Leony Ortiz

Research paper thumbnail of Optimal Generation Dispatch in Electrical Microgrids Based on Inertia Markets as a Solution to Frequency Stability

Energies

This paper addresses a crucial omission in the traditional approach to solving the classic econom... more This paper addresses a crucial omission in the traditional approach to solving the classic economic dispatch problem within microgrids featuring renewable energy sources—the often-neglected frequency disturbances arising from reductions in system inertia. To remedy this, we present an innovative economic dispatch model empowered by nonlinear optimization (NLP), incorporating stringent minimum inertia constraints essential for ensuring system stability over a 24-h horizon. Our approach involves a comprehensive exploration of the intricate relationship between system inertia and frequency stability, culminating in the seamless integration of these inertia constraints into the economic dispatch model. To validate the practicality of our model, we present two distinct scenarios: a base case representing conventional dispatch methodologies and an alternative case that considers the imposition of inertia restrictions. These scenarios are rigorously tested and implemented using the CICGRE ...

Research paper thumbnail of Elementos primarios de la reflexión acción en la labor académica: el compromiso socio-político del docente universitario para la formación de buenos ciudadanos y la ética como herramienta de formación preventiva en estudiantes universitarios, mediante la aplicación de la técnica grupo de enfoque

Atlante Cuadernos de Educación y Desarrollo, Jul 17, 2018

Research paper thumbnail of An Hybrid Algorithm based NARX for Non-Linear Identification and modeling of an AC/DC Hybrid Microgrid simulation

Research paper thumbnail of Multilevel inverter D-STATCOM for reducing total harmonic distortion in a non-linear loads electrical distribution system

Revista Técnica "energía"

El paper presenta el análisis de rendimiento de un Inversor Multinivel en Cascada D-STATCOM para ... more El paper presenta el análisis de rendimiento de un Inversor Multinivel en Cascada D-STATCOM para reducir la distorsión armónica total, que basa su control en la estrategia del marco de referencia síncrono. La distorsión armónica es recurrente en las redes de distribución eléctrica actuales debido a la presencia de cargas no lineal, como electrodomésticos u otros dispositivos que tengan en sus componentes electrónica de potencia. El funcionamiento del sistema es evaluado antes y después de implementar la compensación. La simulación y análisis de los resultados de esta investigación está validado en el sistema de pruebas de la IEEE de 13 barras, en MATLAB y Simulink, alcanzando excelentes resultados en reducción del contenido armónico del sistema.

Research paper thumbnail of A Methodology of Sensor Fault-Tolerant Control on a Hierarchical Control for Hybrid Microgrids

IEEE Access, 2023

This study develops a new Sensor Fault-Tolerant methodology for two-level Centralized Hierarchica... more This study develops a new Sensor Fault-Tolerant methodology for two-level Centralized Hierarchical Control of isolated microgrids based on a modified Kalman filter algorithm. The main objective is to increase the reliability and safety margins of isolated smart microgrids in the presence of different sensor faults on the secondary control. Consequently, Sensor Fault-Tolerant control reduces the costs because costly redundant hardware is not required. Because of its low computing effort, speed, ease of implementation, and tuning, this method can be used in more complex control configurations, multiple sensor faults, and different hierarchical control levels. The designed Sensor Fault-Tolerant Hierarchical Control System was initially proposed for a grid-forming topology of single-phase BESSs systems connected in cascade to the microgrid. The implemented fault tolerance methodology can maintain control objectives with sensor faults. Consequently, the MG's voltage at the time of the fault does not exceed 5%, and the voltage unbalance at the common coupling point or on the critical bus is compensated to a quality reference value of less than 2%. The performance of the proposed algorithm is tested using the MATLAB/Simulink simulation platform.

Research paper thumbnail of Hybrid Active Power Filter (APF) with Photovoltaic Generation integration for Voltage Profile Improvement

Revista Técnica "energía"

El presente trabajo investigativo presenta el diseño y la implementación de un filtro activo de p... more El presente trabajo investigativo presenta el diseño y la implementación de un filtro activo de potencia (APF) híbrido, que tiene como objetivo lograr la corrección de los niveles de voltaje cuando estos son afectados por la integración de generación fotovoltaica dentro de la red de distribución eléctrica. Para alcanzar el objetivo propuesto, se hace uso de la técnica de control de modulación por vector espacial resultando en la reducción de armónicos de corriente y voltaje. El diseño propuesto se lo prueba en el sistema de prueba de la IEEE de 13 barras, en Simulink- MATLAB. El APF con la estrategia propuesta tiene excelentes resultados, y permite la inserción de sistemas energéticos fotovoltaicos en la etapa de distribución. Dependiendo la selección del APF de alto potencial se podrá determinar cuan significativa es la corrección sobre el perfil de voltaje, también se reflejará una reducción en las perturbaciones de carga y la compensación de los armónicos se verá mejorada.

Research paper thumbnail of Optimal Insertion of Energy Storage Systems Considering the Economic Dispatch and the Minimization of Energy Not Supplied

Energies

This study presents an optimal insertion model for battery storage systems in the nodes of an ele... more This study presents an optimal insertion model for battery storage systems in the nodes of an electrical transmission network. The proposed model is developed through mixed integer linear programming applied to the calculation of DC power flows, considering restrictions given by the characteristics of the network and by the parameters of the generation units. The proposal’s main objective is to reduce the costs of operation and non-supplied energy produced, due to needing to meet the demand fully or partially. As a case study to evaluate the proposed methodology, the IEEE 24-bar test system is used. In this base case, electrical generators that depend on different primary energy resources are modeled: hydraulic, thermal, photovoltaic, and wind, in addition to potential electrical energy storage systems. These storage systems are assigned as possible analysis scenarios through the proposed optimization technique. The study is carried out in a time horizon of 24 h per day, according t...

Research paper thumbnail of Linear Voltage Stability Indicator (LVSI) for Optimal Placement of SVC Devices to Improve the Voltage Stability Margin in Transmission Systems

Electronics

This study presents a procedure for placing static var compensators (SVC) in an EPS using the fuz... more This study presents a procedure for placing static var compensators (SVC) in an EPS using the fuzzy c-means clustering technique. For this purpose, the optimal power flow (OPF) is initially quantified to obtain the sensitivity array of the system based on the Jacobian of the system. Then, the attenuation and electrical distance matrices are estimated. Subsequently, the fuzzy c-means clustering algorithm is used with the initially estimated cluster identification criterion to obtain the voltage control areas (VCAs). On the other hand, the criterion of minimizing the installation costs of the SVCs is used in conjunction with the linear voltage stability index (LVSI) for the ideal arrangement of the compensators. This is applied to each VCA created. The technique described is applied to the 14-node and 30-node schemes to check their effectiveness. Additionally, the results obtained are compared with the Power Factory software and with similar studies. Finally, the proposed technique pr...

Research paper thumbnail of A Novel Data Compression Methodology Focused on Power Quality Signals Using Compressive Sampling Matching Pursuit

Energies

In this research a new data compression technique for electrical signals was proposed. The method... more In this research a new data compression technique for electrical signals was proposed. The methodology combined wavelets and compressed sensing techniques. Two algorithms were proposed; the first one was designed to find specific characteristics of any type of energy quality signal such as the number of samples per cycle, zero-crossing indices, and signal amplitude. With the data obtained, the second algorithm was designed to apply a biorthogonal wavelet transform resulting in a shifted signal, and its amplitude was modified with respect to the original. The errors were rectified with the attributes found in the early stage, and the application of filters was conducted to reduce the ripple attached. Then, the third algorithm was designed to apply Compressive Sampling Matching Pursuit, which is a greedy algorithm that creates a dictionary with orthogonal bases representing the original signal in a sparse vector. The results exhibited excellent features of quality and were accomplishe...

Research paper thumbnail of A Method based on a Sliding Mode Observer for Fault Detection in Photovoltaic Solar Systems connected to AC Microgrids

2022 IEEE Sixth Ecuador Technical Chapters Meeting (ETCM)

Research paper thumbnail of Ubicación y dimensionamiento óptimo de Generación Distribuida en redes de distribución usando PSO

Revista de I + D tecnológico, Jul 20, 2022

RESUMEN. Este artículo presenta la ubicación y el dimensionamiento óptimo de la generación distri... more RESUMEN. Este artículo presenta la ubicación y el dimensionamiento óptimo de la generación distribuida con inyección de potencia activa en sistemas de distribución radial mediante un flujo de potencia óptimo a través del algoritmo de optimización por enjambre de partículas (PSO). Los criterios propuestos como objetivos son minimizar las pérdidas de potencia en las líneas y mejorar el perfil de los voltajes reduciendo las desviaciones con respecto al valor nominal. Como variable de función objetivo también se define el cumplimiento de estos criterios considerando la minimización de los costos asociados a la generación distribuida. Las restricciones propuestas están sujetas al balance de potencias, los márgenes permisibles de voltaje y los límites de inyección de potencia de la generación distribuida. El análisis se llevó a cabo en los sistemas de distribución radial IEEE de 15 barras e IEEE de 33 barras como casos de estudio, y la implementación se desarrolló en el entorno del software matemático MATLAB. La metodología utilizada (PSO) también permitió mejorar los índices de condiciones de calidad, como lo son la desviación de voltaje promedio y la desviación máxima del voltaje. Los resultados obtenidos muestran que el método utilizado para la ubicación y el dimensionamiento óptimo de la generación distribuida logren de forma óptima minimizar las pérdidas de potencia, mejorar los niveles de voltaje cumpliendo con el objetivo de mínimo costo.

Research paper thumbnail of Multicriteria Analysis for Optimal Reconfiguration of a Distribution Network in Case of Failures

Research paper thumbnail of Controller Coordination Strategy for DC Microgrid Using Distributed Predictive Control Improving Voltage Stability

Energies

The paper presents the design and control strategy of an isolated DC microgrid, which is based on... more The paper presents the design and control strategy of an isolated DC microgrid, which is based on classical control techniques, predictive control and iterative algorithms. The design control parameters are maximum overshoot, settling time and voltage ripple. The strategy is designed to operate in two different modes, end-users minimum and maximum demand scenarios, and this is achieved through the incorporation of network dynamic loads. The control methodology developed allows to obtain a fast response of the design set points, and an efficient control for disturbance rejection. The simulation results obtained satisfy the proposed design guidelines by obtaining a maximum overshoot of 4.8%, settling time of 0.012 seconds and a voltage ripple of 0.1 percentage. The implemented system simulation was developed in Matlab-Simulink software.

Research paper thumbnail of Optimal Location of Reclosers in Electrical Distribution Systems Considering Multicriteria Decision Through the Generation of Scenarios Using the Montecarlo Method

Research paper thumbnail of Passive Control Tolerant to Sensing Faults in dynamic compensation devices - SVC through a hybrid strategy

Ingenius

For this research, a passive fault tolerant control system is developed for a static reactive com... more For this research, a passive fault tolerant control system is developed for a static reactive compensator coupled to a microgrid in connected mode, oriented to those faults that result as a consequence of common damages in their sensing systems. The proposed method uses a robust optimal controller by H and artificial neural networks as a nonlinear estimation method. Simulations, validation, plant identification and controller design are carried out using a microgrid Benchmark system, programmed in Matlab/Simulink. The research shows valuable results such as: the improvement in the reliability and resilience of static compensators against sensing failures, improvements in the behavior of the output signal of the static compensator controller exposed to sensing failures and the decrease in error with respect to classic controller.

Research paper thumbnail of A review on control and fault-tolerant control systems of AC/DC microgrids

Heliyon, 2020

Microgrids (MG) treat local energy supply issues effectively and from a point of view of the dist... more Microgrids (MG) treat local energy supply issues effectively and from a point of view of the distribution grid, may be a power supply or virtual load. Despite holding a myriad of benefits, MGs also bear a set of challenges, including a higher fault rate. Currently, many articles focus on control techniques; however, little has been written about the techniques of control, hierarchical control, and fault-tolerant control (FTC) applied to MGs, which is the motive of this bibliographic revision on control systems. A brief comparison of the different approaches in the field of present-day research is carried out primarily addressing hierarchical control and fault tolerance. The objective of this investigation is to attract the interest of researchers to the field of control and fault tolerance applied to MGs, such as: modeling, testbed, benchmark systems, control and hierarchical control strategies, fault diagnosis and FTC.

Research paper thumbnail of Hybrid AC/DC microgrid test system simulation: grid-connected mode

Research paper thumbnail of Multi-Criteria Optimization of the Deployment of a Grid for Rural Electrification Based on a Heuristic Method

IOP Conference Series: Earth and Environmental Science, 2017

In order to design electrification systems, recent mathematical models solve the problem of locat... more In order to design electrification systems, recent mathematical models solve the problem of location, type of electrification components, and the design of possible distribution microgrids. However, due to the amount of points to be electrified increases, the solution to these models require high computational times, thereby becoming unviable practice models. This study posed a new heuristic method for the electrification of rural areas in order to solve the problem. This heuristic algorithm presents the deployment of rural electrification microgrids in the world, by finding routes for optimal placement lines and transformers in transmission and distribution microgrids. The challenge is to obtain a display with equity in losses, considering the capacity constraints of the devices and topology of the land at minimal economic cost. An optimal scenario ensures the electrification of all neighbourhoods to a minimum investment cost in terms of the distance between electric conductors and the amount of transformation devices.

Research paper thumbnail of Generación distribuida a partir de bicicletas estáticas y sistemas híbridos

Ingenius, 2013

El presente artículo hace referencia a las diferentes maneras de generar electricidad en los sist... more El presente artículo hace referencia a las diferentes maneras de generar electricidad en los sistemas de generación distribuida, creando microredes eléctricas las cuales necesitan sistemas de gestión de electricidad.La generación distribuida se ha convertido en la mejor alternativa para reducir el consumo de energía en las edificaciones y también para generar ingresos económicos adicionales. La importancia de generar electricidad desde las propias edificaciones ha hecho que el ser humano vaya elaborando distintos dispositivos para aprovechar las diferentes y variadas energías, siendo las más usuales: la solar y eólica. El aprovechamiento del movimiento de las máquinas estáticas para hacer ejercicio es una nueva fuente para generar electricidad, muy poco aprovechada y por ello es necesario verificar como es su comportamiento asociada a una microred eléctrica y al sistema de gestión energética. Al finalizar este proyecto, se tendrá un enfoque como punto de partida para futuras investi...

Research paper thumbnail of Reconfiguration strategy for Fault Tolerance of power Distribution Systems using Petri net

2016 IEEE Ecuador Technical Chapters Meeting (ETCM), 2016

This article presents a new heuristic strategy for the elaboration of a reconfiguration model for... more This article presents a new heuristic strategy for the elaboration of a reconfiguration model for Distribution System Fault Tolerance (DSFT) using Petri nets (PN). Its intent is to model, analyze and optimize the program for the management of Smart Reclosers and Sectionalizers in a Smart Grid Distribution System, which together with the detection of faults, manage its isolation and the reconnection of a new system that maintains working capacity. In addition, according to the condition of protective equipment, thereby guarantees the supply continuity. The restoration of the distribution system with the support of the block diagram of the Study Guide Modes Start and Stop (GEMMA) arises. The objective is to design with PN a decision sequence for the programming design of intelligent electronic devices (RTU-IED-PLC) that allows the operation of the distribution network in fault status in branch form or in combination. This keeps quality levels of energy delivery to a vast majority of users, and is able to perform autonomously with the rapid restoration of customers for a Smart Distribution System. It also provides greater flexibility for the following: control design for validation states (State feedback control), the Event Feedback control, and simplification and plans for the restoration of the smart restoration plans system intelligent distribution.

Research paper thumbnail of Optimal Generation Dispatch in Electrical Microgrids Based on Inertia Markets as a Solution to Frequency Stability

Energies

This paper addresses a crucial omission in the traditional approach to solving the classic econom... more This paper addresses a crucial omission in the traditional approach to solving the classic economic dispatch problem within microgrids featuring renewable energy sources—the often-neglected frequency disturbances arising from reductions in system inertia. To remedy this, we present an innovative economic dispatch model empowered by nonlinear optimization (NLP), incorporating stringent minimum inertia constraints essential for ensuring system stability over a 24-h horizon. Our approach involves a comprehensive exploration of the intricate relationship between system inertia and frequency stability, culminating in the seamless integration of these inertia constraints into the economic dispatch model. To validate the practicality of our model, we present two distinct scenarios: a base case representing conventional dispatch methodologies and an alternative case that considers the imposition of inertia restrictions. These scenarios are rigorously tested and implemented using the CICGRE ...

Research paper thumbnail of Elementos primarios de la reflexión acción en la labor académica: el compromiso socio-político del docente universitario para la formación de buenos ciudadanos y la ética como herramienta de formación preventiva en estudiantes universitarios, mediante la aplicación de la técnica grupo de enfoque

Atlante Cuadernos de Educación y Desarrollo, Jul 17, 2018

Research paper thumbnail of An Hybrid Algorithm based NARX for Non-Linear Identification and modeling of an AC/DC Hybrid Microgrid simulation

Research paper thumbnail of Multilevel inverter D-STATCOM for reducing total harmonic distortion in a non-linear loads electrical distribution system

Revista Técnica "energía"

El paper presenta el análisis de rendimiento de un Inversor Multinivel en Cascada D-STATCOM para ... more El paper presenta el análisis de rendimiento de un Inversor Multinivel en Cascada D-STATCOM para reducir la distorsión armónica total, que basa su control en la estrategia del marco de referencia síncrono. La distorsión armónica es recurrente en las redes de distribución eléctrica actuales debido a la presencia de cargas no lineal, como electrodomésticos u otros dispositivos que tengan en sus componentes electrónica de potencia. El funcionamiento del sistema es evaluado antes y después de implementar la compensación. La simulación y análisis de los resultados de esta investigación está validado en el sistema de pruebas de la IEEE de 13 barras, en MATLAB y Simulink, alcanzando excelentes resultados en reducción del contenido armónico del sistema.

Research paper thumbnail of A Methodology of Sensor Fault-Tolerant Control on a Hierarchical Control for Hybrid Microgrids

IEEE Access, 2023

This study develops a new Sensor Fault-Tolerant methodology for two-level Centralized Hierarchica... more This study develops a new Sensor Fault-Tolerant methodology for two-level Centralized Hierarchical Control of isolated microgrids based on a modified Kalman filter algorithm. The main objective is to increase the reliability and safety margins of isolated smart microgrids in the presence of different sensor faults on the secondary control. Consequently, Sensor Fault-Tolerant control reduces the costs because costly redundant hardware is not required. Because of its low computing effort, speed, ease of implementation, and tuning, this method can be used in more complex control configurations, multiple sensor faults, and different hierarchical control levels. The designed Sensor Fault-Tolerant Hierarchical Control System was initially proposed for a grid-forming topology of single-phase BESSs systems connected in cascade to the microgrid. The implemented fault tolerance methodology can maintain control objectives with sensor faults. Consequently, the MG's voltage at the time of the fault does not exceed 5%, and the voltage unbalance at the common coupling point or on the critical bus is compensated to a quality reference value of less than 2%. The performance of the proposed algorithm is tested using the MATLAB/Simulink simulation platform.

Research paper thumbnail of Hybrid Active Power Filter (APF) with Photovoltaic Generation integration for Voltage Profile Improvement

Revista Técnica "energía"

El presente trabajo investigativo presenta el diseño y la implementación de un filtro activo de p... more El presente trabajo investigativo presenta el diseño y la implementación de un filtro activo de potencia (APF) híbrido, que tiene como objetivo lograr la corrección de los niveles de voltaje cuando estos son afectados por la integración de generación fotovoltaica dentro de la red de distribución eléctrica. Para alcanzar el objetivo propuesto, se hace uso de la técnica de control de modulación por vector espacial resultando en la reducción de armónicos de corriente y voltaje. El diseño propuesto se lo prueba en el sistema de prueba de la IEEE de 13 barras, en Simulink- MATLAB. El APF con la estrategia propuesta tiene excelentes resultados, y permite la inserción de sistemas energéticos fotovoltaicos en la etapa de distribución. Dependiendo la selección del APF de alto potencial se podrá determinar cuan significativa es la corrección sobre el perfil de voltaje, también se reflejará una reducción en las perturbaciones de carga y la compensación de los armónicos se verá mejorada.

Research paper thumbnail of Optimal Insertion of Energy Storage Systems Considering the Economic Dispatch and the Minimization of Energy Not Supplied

Energies

This study presents an optimal insertion model for battery storage systems in the nodes of an ele... more This study presents an optimal insertion model for battery storage systems in the nodes of an electrical transmission network. The proposed model is developed through mixed integer linear programming applied to the calculation of DC power flows, considering restrictions given by the characteristics of the network and by the parameters of the generation units. The proposal’s main objective is to reduce the costs of operation and non-supplied energy produced, due to needing to meet the demand fully or partially. As a case study to evaluate the proposed methodology, the IEEE 24-bar test system is used. In this base case, electrical generators that depend on different primary energy resources are modeled: hydraulic, thermal, photovoltaic, and wind, in addition to potential electrical energy storage systems. These storage systems are assigned as possible analysis scenarios through the proposed optimization technique. The study is carried out in a time horizon of 24 h per day, according t...

Research paper thumbnail of Linear Voltage Stability Indicator (LVSI) for Optimal Placement of SVC Devices to Improve the Voltage Stability Margin in Transmission Systems

Electronics

This study presents a procedure for placing static var compensators (SVC) in an EPS using the fuz... more This study presents a procedure for placing static var compensators (SVC) in an EPS using the fuzzy c-means clustering technique. For this purpose, the optimal power flow (OPF) is initially quantified to obtain the sensitivity array of the system based on the Jacobian of the system. Then, the attenuation and electrical distance matrices are estimated. Subsequently, the fuzzy c-means clustering algorithm is used with the initially estimated cluster identification criterion to obtain the voltage control areas (VCAs). On the other hand, the criterion of minimizing the installation costs of the SVCs is used in conjunction with the linear voltage stability index (LVSI) for the ideal arrangement of the compensators. This is applied to each VCA created. The technique described is applied to the 14-node and 30-node schemes to check their effectiveness. Additionally, the results obtained are compared with the Power Factory software and with similar studies. Finally, the proposed technique pr...

Research paper thumbnail of A Novel Data Compression Methodology Focused on Power Quality Signals Using Compressive Sampling Matching Pursuit

Energies

In this research a new data compression technique for electrical signals was proposed. The method... more In this research a new data compression technique for electrical signals was proposed. The methodology combined wavelets and compressed sensing techniques. Two algorithms were proposed; the first one was designed to find specific characteristics of any type of energy quality signal such as the number of samples per cycle, zero-crossing indices, and signal amplitude. With the data obtained, the second algorithm was designed to apply a biorthogonal wavelet transform resulting in a shifted signal, and its amplitude was modified with respect to the original. The errors were rectified with the attributes found in the early stage, and the application of filters was conducted to reduce the ripple attached. Then, the third algorithm was designed to apply Compressive Sampling Matching Pursuit, which is a greedy algorithm that creates a dictionary with orthogonal bases representing the original signal in a sparse vector. The results exhibited excellent features of quality and were accomplishe...

Research paper thumbnail of A Method based on a Sliding Mode Observer for Fault Detection in Photovoltaic Solar Systems connected to AC Microgrids

2022 IEEE Sixth Ecuador Technical Chapters Meeting (ETCM)

Research paper thumbnail of Ubicación y dimensionamiento óptimo de Generación Distribuida en redes de distribución usando PSO

Revista de I + D tecnológico, Jul 20, 2022

RESUMEN. Este artículo presenta la ubicación y el dimensionamiento óptimo de la generación distri... more RESUMEN. Este artículo presenta la ubicación y el dimensionamiento óptimo de la generación distribuida con inyección de potencia activa en sistemas de distribución radial mediante un flujo de potencia óptimo a través del algoritmo de optimización por enjambre de partículas (PSO). Los criterios propuestos como objetivos son minimizar las pérdidas de potencia en las líneas y mejorar el perfil de los voltajes reduciendo las desviaciones con respecto al valor nominal. Como variable de función objetivo también se define el cumplimiento de estos criterios considerando la minimización de los costos asociados a la generación distribuida. Las restricciones propuestas están sujetas al balance de potencias, los márgenes permisibles de voltaje y los límites de inyección de potencia de la generación distribuida. El análisis se llevó a cabo en los sistemas de distribución radial IEEE de 15 barras e IEEE de 33 barras como casos de estudio, y la implementación se desarrolló en el entorno del software matemático MATLAB. La metodología utilizada (PSO) también permitió mejorar los índices de condiciones de calidad, como lo son la desviación de voltaje promedio y la desviación máxima del voltaje. Los resultados obtenidos muestran que el método utilizado para la ubicación y el dimensionamiento óptimo de la generación distribuida logren de forma óptima minimizar las pérdidas de potencia, mejorar los niveles de voltaje cumpliendo con el objetivo de mínimo costo.

Research paper thumbnail of Multicriteria Analysis for Optimal Reconfiguration of a Distribution Network in Case of Failures

Research paper thumbnail of Controller Coordination Strategy for DC Microgrid Using Distributed Predictive Control Improving Voltage Stability

Energies

The paper presents the design and control strategy of an isolated DC microgrid, which is based on... more The paper presents the design and control strategy of an isolated DC microgrid, which is based on classical control techniques, predictive control and iterative algorithms. The design control parameters are maximum overshoot, settling time and voltage ripple. The strategy is designed to operate in two different modes, end-users minimum and maximum demand scenarios, and this is achieved through the incorporation of network dynamic loads. The control methodology developed allows to obtain a fast response of the design set points, and an efficient control for disturbance rejection. The simulation results obtained satisfy the proposed design guidelines by obtaining a maximum overshoot of 4.8%, settling time of 0.012 seconds and a voltage ripple of 0.1 percentage. The implemented system simulation was developed in Matlab-Simulink software.

Research paper thumbnail of Optimal Location of Reclosers in Electrical Distribution Systems Considering Multicriteria Decision Through the Generation of Scenarios Using the Montecarlo Method

Research paper thumbnail of Passive Control Tolerant to Sensing Faults in dynamic compensation devices - SVC through a hybrid strategy

Ingenius

For this research, a passive fault tolerant control system is developed for a static reactive com... more For this research, a passive fault tolerant control system is developed for a static reactive compensator coupled to a microgrid in connected mode, oriented to those faults that result as a consequence of common damages in their sensing systems. The proposed method uses a robust optimal controller by H and artificial neural networks as a nonlinear estimation method. Simulations, validation, plant identification and controller design are carried out using a microgrid Benchmark system, programmed in Matlab/Simulink. The research shows valuable results such as: the improvement in the reliability and resilience of static compensators against sensing failures, improvements in the behavior of the output signal of the static compensator controller exposed to sensing failures and the decrease in error with respect to classic controller.

Research paper thumbnail of A review on control and fault-tolerant control systems of AC/DC microgrids

Heliyon, 2020

Microgrids (MG) treat local energy supply issues effectively and from a point of view of the dist... more Microgrids (MG) treat local energy supply issues effectively and from a point of view of the distribution grid, may be a power supply or virtual load. Despite holding a myriad of benefits, MGs also bear a set of challenges, including a higher fault rate. Currently, many articles focus on control techniques; however, little has been written about the techniques of control, hierarchical control, and fault-tolerant control (FTC) applied to MGs, which is the motive of this bibliographic revision on control systems. A brief comparison of the different approaches in the field of present-day research is carried out primarily addressing hierarchical control and fault tolerance. The objective of this investigation is to attract the interest of researchers to the field of control and fault tolerance applied to MGs, such as: modeling, testbed, benchmark systems, control and hierarchical control strategies, fault diagnosis and FTC.

Research paper thumbnail of Hybrid AC/DC microgrid test system simulation: grid-connected mode

Research paper thumbnail of Multi-Criteria Optimization of the Deployment of a Grid for Rural Electrification Based on a Heuristic Method

IOP Conference Series: Earth and Environmental Science, 2017

In order to design electrification systems, recent mathematical models solve the problem of locat... more In order to design electrification systems, recent mathematical models solve the problem of location, type of electrification components, and the design of possible distribution microgrids. However, due to the amount of points to be electrified increases, the solution to these models require high computational times, thereby becoming unviable practice models. This study posed a new heuristic method for the electrification of rural areas in order to solve the problem. This heuristic algorithm presents the deployment of rural electrification microgrids in the world, by finding routes for optimal placement lines and transformers in transmission and distribution microgrids. The challenge is to obtain a display with equity in losses, considering the capacity constraints of the devices and topology of the land at minimal economic cost. An optimal scenario ensures the electrification of all neighbourhoods to a minimum investment cost in terms of the distance between electric conductors and the amount of transformation devices.

Research paper thumbnail of Generación distribuida a partir de bicicletas estáticas y sistemas híbridos

Ingenius, 2013

El presente artículo hace referencia a las diferentes maneras de generar electricidad en los sist... more El presente artículo hace referencia a las diferentes maneras de generar electricidad en los sistemas de generación distribuida, creando microredes eléctricas las cuales necesitan sistemas de gestión de electricidad.La generación distribuida se ha convertido en la mejor alternativa para reducir el consumo de energía en las edificaciones y también para generar ingresos económicos adicionales. La importancia de generar electricidad desde las propias edificaciones ha hecho que el ser humano vaya elaborando distintos dispositivos para aprovechar las diferentes y variadas energías, siendo las más usuales: la solar y eólica. El aprovechamiento del movimiento de las máquinas estáticas para hacer ejercicio es una nueva fuente para generar electricidad, muy poco aprovechada y por ello es necesario verificar como es su comportamiento asociada a una microred eléctrica y al sistema de gestión energética. Al finalizar este proyecto, se tendrá un enfoque como punto de partida para futuras investi...

Research paper thumbnail of Reconfiguration strategy for Fault Tolerance of power Distribution Systems using Petri net

2016 IEEE Ecuador Technical Chapters Meeting (ETCM), 2016

This article presents a new heuristic strategy for the elaboration of a reconfiguration model for... more This article presents a new heuristic strategy for the elaboration of a reconfiguration model for Distribution System Fault Tolerance (DSFT) using Petri nets (PN). Its intent is to model, analyze and optimize the program for the management of Smart Reclosers and Sectionalizers in a Smart Grid Distribution System, which together with the detection of faults, manage its isolation and the reconnection of a new system that maintains working capacity. In addition, according to the condition of protective equipment, thereby guarantees the supply continuity. The restoration of the distribution system with the support of the block diagram of the Study Guide Modes Start and Stop (GEMMA) arises. The objective is to design with PN a decision sequence for the programming design of intelligent electronic devices (RTU-IED-PLC) that allows the operation of the distribution network in fault status in branch form or in combination. This keeps quality levels of energy delivery to a vast majority of users, and is able to perform autonomously with the rapid restoration of customers for a Smart Distribution System. It also provides greater flexibility for the following: control design for validation states (State feedback control), the Event Feedback control, and simplification and plans for the restoration of the smart restoration plans system intelligent distribution.