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A. Pizano-Martinez
Engineering Division Campus Irapuato-Salamanca, University of Guanajuato, Carr. Salamanca-Valle de Santiago km 3.5 + 1.8, Com. Palo Blanco, Salamanca 36885, Mexico

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Journal article
Published: 15 October 2020 in Mathematics
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This paper presents the design of a decoupled linear control strategy for a Dynamic Voltage Restorer (DVR) that utilizes a Matrix Converter (MC) as its core element and obtains the compensation energy directly from the power system. This DVR is intended to cope with power quality problems present in supply system voltages such as balanced and unbalanced variations (sags and swells), and harmonic distortion. The dynamic model of the complete system that includes the Matrix Converter, the input filters and the electrical grid, is performed in the synchronous reference frame (dq0), to have constant signals at the fundamental frequency, in order to design the proposed linear control strategy. The coupling in the dq components of the system output signals caused by the Park Transformation, is eliminated by a change of variable proposed for the controller design, giving rise to a decoupled linear control. In this way, the strategy developed makes it possible to establish an adequate transient response for the converter in terms of convergence speed and overshoot magnitude, in addition to ensuring closed-loop system stability under bounded operating conditions. Unlike other proposals that utilize complex modulation strategies to control the MC under adverse conditions at the input terminals, in this case, the ability to generate fully controllable output voltages, regardless of the condition of the input signals, is provided by the designed linear controller. This allows the development of a multifunctional compensator with a simple control that could be of easy implementation. In order to verify the performance of the control strategy developed, and the effectiveness of the proposed DVR to mitigate the power quality problems already mentioned, several case studies are presented. The operational capacity of the MC is demonstrated by the obtained simulation results, which clearly reveals the capability of the DVR to eliminate voltage swells up to 50% and sags less than 50%. The compensation limit reached for sags is 37%. In relation to compensation for unbalanced voltage variations, the DVR manages to reduce the voltage imbalance from 11.11% to 0.37%. Finally, with regard to the operation of the DVR as an active voltage filter, the compensator is capable of reducing a THD of 20% calculated on the supply voltage, to a value of 1.53% measured at the load terminals. In the last two cases, the DVR mitigates disturbances to a level below the criteria established in the IEEE standard for power quality. Results obtained from numerical simulations performed in MATLAB/Simulink serve to validate the proposal, given that for each condition analyzed, the MC had succesfully generated the adequate compensation voltages, thus corroborating the robustness and effectiveness of the control strategy developed in this proposal.

ACS Style

Luis Merchan-Villalba; Jose Lozano-Garcia; Juan Avina-Cervantes; Hector Estrada-Garcia; Alejandro Pizano-Martinez; Cristian Carreno-Meneses. Linearly Decoupled Control of a Dynamic Voltage Restorer without Energy Storage. Mathematics 2020, 8, 1794 .

AMA Style

Luis Merchan-Villalba, Jose Lozano-Garcia, Juan Avina-Cervantes, Hector Estrada-Garcia, Alejandro Pizano-Martinez, Cristian Carreno-Meneses. Linearly Decoupled Control of a Dynamic Voltage Restorer without Energy Storage. Mathematics. 2020; 8 (10):1794.

Chicago/Turabian Style

Luis Merchan-Villalba; Jose Lozano-Garcia; Juan Avina-Cervantes; Hector Estrada-Garcia; Alejandro Pizano-Martinez; Cristian Carreno-Meneses. 2020. "Linearly Decoupled Control of a Dynamic Voltage Restorer without Energy Storage." Mathematics 8, no. 10: 1794.

Journal article
Published: 15 May 2019 in Electronics
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In this paper, an efficient implementation of the four-step current commutation technique for controlling bidirectional power switches in a Matrix Converter (MC) is proposed. This strategy is based on the enhanced pulse width modulation peripheral included in the C 2000 Delfino 32-bit microcontroller of Texas Instruments. By tuning the algorithmic parameters contained in this module, the four-step commutation process is carried out on the Microcontroller Unit (MCU) without overloading the full complex processor and avoiding the use of additional special hardware such as Field-Programmable Gate Arrays (FPGA) or Complex Programmable Logic Devices (CPLD) when controlling the MC. The algorithm is implemented on the TMS320F28379D MCU and operationally validated on an MC prototype, where the functionality of the proposal is demonstrated.

ACS Style

Luis Ramon Merchan-Villalba; Jose Merced Lozano-Garcia; Diego Armando De Jesus Gutierrez-Torres; Juan Gabriel Avina-Cervantes; Alejandro Pizano-Martinez. Four-Step Current Commutation Strategy for a Matrix Converter Based on Enhanced-PWM MCU Peripherals. Electronics 2019, 8, 547 .

AMA Style

Luis Ramon Merchan-Villalba, Jose Merced Lozano-Garcia, Diego Armando De Jesus Gutierrez-Torres, Juan Gabriel Avina-Cervantes, Alejandro Pizano-Martinez. Four-Step Current Commutation Strategy for a Matrix Converter Based on Enhanced-PWM MCU Peripherals. Electronics. 2019; 8 (5):547.

Chicago/Turabian Style

Luis Ramon Merchan-Villalba; Jose Merced Lozano-Garcia; Diego Armando De Jesus Gutierrez-Torres; Juan Gabriel Avina-Cervantes; Alejandro Pizano-Martinez. 2019. "Four-Step Current Commutation Strategy for a Matrix Converter Based on Enhanced-PWM MCU Peripherals." Electronics 8, no. 5: 547.

Journal article
Published: 19 February 2019 in Energies
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This paper presents the development of a heuristic-based algorithm for a Home Electric Energy Management System (HEEMS). The novelty of the proposal resides in the fact that solutions of the Pareto front, minimizing both the energy consumption and cost, are obtained by a Genetic Algorithm (GA) considering the renewable energy availability as well as the user activity level (AL) inside the house. The extensive solutions search characteristic of the GAs is seized to avoid the calculation of the full set of Pareto front solutions, i.e., from a reduced set of non-dominated solutions in the Pareto sense, an optimal solution with the best fitness is obtained, reducing considerably the computational time. The HEEMS considers models of the air conditioner, clothes dryer, dishwasher, electric stove, pool pump, and washing machine. Models of the wind turbine and solar PV modules are also included. The wind turbine model is written in terms of the generated active power exclusively dependent on the incoming wind profiles. The solar PV modules model accounts for environmental factors such as ambient temperature changes and irradiance profiles. The effect of the energy storage unit on the energy consumption and costs is evaluated adapting a model of the device considering its charge and discharge ramp rates. The proposed algorithm is implemented in the Matlab® platform and its validation is performed by comparing its results to those obtained by a freeware tool developed for the energy management of smart residential loads. Also, the evaluation of the performance of the proposed HEEMS is carried out by comparing its results to those obtained when the multi-objective optimization problem is solved considering weights assigned to each objective function. Results showed that considerable savings are obtained at reduced computational times. Furthermore, with the calculation of only one solution, the end-user interaction is reduced making the HEEMS even more manageable than previously proposed approaches.

ACS Style

Victor J. Gutierrez-Martinez; Carlos A. Moreno-Bautista; Jose M. Lozano-Garcia; Alejandro Pizano-Martinez; Enrique A. Zamora-Cardenas; Miguel A. Gomez-Martinez. A Heuristic Home Electric Energy Management System Considering Renewable Energy Availability. Energies 2019, 12, 671 .

AMA Style

Victor J. Gutierrez-Martinez, Carlos A. Moreno-Bautista, Jose M. Lozano-Garcia, Alejandro Pizano-Martinez, Enrique A. Zamora-Cardenas, Miguel A. Gomez-Martinez. A Heuristic Home Electric Energy Management System Considering Renewable Energy Availability. Energies. 2019; 12 (4):671.

Chicago/Turabian Style

Victor J. Gutierrez-Martinez; Carlos A. Moreno-Bautista; Jose M. Lozano-Garcia; Alejandro Pizano-Martinez; Enrique A. Zamora-Cardenas; Miguel A. Gomez-Martinez. 2019. "A Heuristic Home Electric Energy Management System Considering Renewable Energy Availability." Energies 12, no. 4: 671.

Original article
Published: 03 January 2019 in Journal of Electrical Engineering & Technology
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The necessity to seamlessly integrate emerging smart grid (SG) technologies to the electric distribution system has encouraged the development of demand-side management (DSM) and Demand Response (DR) programs. In particular, DR aggregators will play an important role in the new operational paradigm of SG. To propose a new three-phase optimal dispatch model for multiple DR aggregators. The model can consider several DR service providers by means of the explicit inclusion of their characteristics, in the form of cost functions and capacity, in an optimal dispatch model for DR support at the distribution system level. Hence, this proposal helps to eliminate any possible uncertainty about the provision of DR services by improving the traditional hierarchical scheme adopted based on prices issued by the independent system operator. By means of the unbalanced distribution system modeling, DR involvement of single- and three-phase consumers is considered avoiding aggravating the asymmetric balancing between phases, as opposed to traditional positive-sequence DR approaches. The model is implemented and solved combining the two state-of-the-art computational tools, Matlab® and OpenDSS. The former is used to solve the optimization problem, whereas the latter is used to perform numerical simulations of three-phase unbalanced power flow; both tools allow a straightforward model implementation resulting in a tool easily modified and updated. The effectiveness of the proposed approach is numerically demonstrated using the IEEE 13- and 123-node test feeders, in which undesirable operating scenarios are corrected by the implementation of the optimal dispatch of DR resources in very short computational times. Based on the results, it is shown how the ISO is capable to request DR considering several aggregators competing at the distribution system level. Finally, the loss reduction has been included in the objective function, showing that the proposal optimally dispatches the DR aggregators to conveniently minimize the ISO’s operational costs.

ACS Style

Victor J. Gutierrez-Martinez; Enrique A. Zamora-Cardenas; Alejandro Pizano-Martínez; Jose M. Lozano-Garcia; Miguel A. Gomez-Martinez. Optimal Dispatch Model for Demand Response Aggregators. Journal of Electrical Engineering & Technology 2019, 14, 85 -96.

AMA Style

Victor J. Gutierrez-Martinez, Enrique A. Zamora-Cardenas, Alejandro Pizano-Martínez, Jose M. Lozano-Garcia, Miguel A. Gomez-Martinez. Optimal Dispatch Model for Demand Response Aggregators. Journal of Electrical Engineering & Technology. 2019; 14 (1):85-96.

Chicago/Turabian Style

Victor J. Gutierrez-Martinez; Enrique A. Zamora-Cardenas; Alejandro Pizano-Martínez; Jose M. Lozano-Garcia; Miguel A. Gomez-Martinez. 2019. "Optimal Dispatch Model for Demand Response Aggregators." Journal of Electrical Engineering & Technology 14, no. 1: 85-96.

Journal article
Published: 26 September 2018 in Tecnología y ciencias del agua
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ACS Style

Iván A. Hernández-Robles; Departamento De Ingeniería Eléctrica Universidad De Guanajuato; Xiomara González-Ramírez; Alejandro Pizano-Martínez; Jesús Martínez-Patiño; Miguel A. Gómez-Martínez. Simulación y revisión de un dispositivo de pequeña escala para la conversión de energía del oleaje. Tecnología y ciencias del agua 2018, 9, 110 -129.

AMA Style

Iván A. Hernández-Robles, Departamento De Ingeniería Eléctrica Universidad De Guanajuato, Xiomara González-Ramírez, Alejandro Pizano-Martínez, Jesús Martínez-Patiño, Miguel A. Gómez-Martínez. Simulación y revisión de un dispositivo de pequeña escala para la conversión de energía del oleaje. Tecnología y ciencias del agua. 2018; 9 (4):110-129.

Chicago/Turabian Style

Iván A. Hernández-Robles; Departamento De Ingeniería Eléctrica Universidad De Guanajuato; Xiomara González-Ramírez; Alejandro Pizano-Martínez; Jesús Martínez-Patiño; Miguel A. Gómez-Martínez. 2018. "Simulación y revisión de un dispositivo de pequeña escala para la conversión de energía del oleaje." Tecnología y ciencias del agua 9, no. 4: 110-129.

Journal article
Published: 19 August 2018 in Energies
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In this work, we focus on optimal energy management within the context of the tertiary control of a microgrid operating in grid-connected mode. Specifically, the optimal energy management problem is solved in a unified way by using the optimal power flow (OPF) and day-ahead concepts. The elements considered in the microgrid are a photovoltaic panel, a wind turbine, electric vehicles, a storage system, and a point of common coupling with the main grid. The aim of this paper consists of optimizing the economic energy dispatch within the microgrid considering known predictions of electricity demand, solar radiation, and wind speed for a given period of time. The OPF is solved using three different algorithms provided by the optimization toolbox of MATLAB® (R2015a, MathWorks®, Natick, MA, USA): the interior point method (IP), a hybrid genetic algorithm with interior point (GA-IP), and a hybrid direct search with interior point (patternsearch-IP). The efficiency and effectiveness of the algorithms to optimize the energy dispatch within the microgrid are verified and analyzed through a case study, where real climatological data of solar irradiance, wind speed in Almería city, photovoltaic system data, and room load from a bioclimatic building were considered.

ACS Style

Luis Orlando Polanco Vasquez; Cristian Andrés Carreño Meneses; Alejandro Pizano Martínez; Juana López Redondo; Manuel Pérez García; José Domingo Álvarez Hervás. Optimal Energy Management within a Microgrid: A Comparative Study. Energies 2018, 11, 2167 .

AMA Style

Luis Orlando Polanco Vasquez, Cristian Andrés Carreño Meneses, Alejandro Pizano Martínez, Juana López Redondo, Manuel Pérez García, José Domingo Álvarez Hervás. Optimal Energy Management within a Microgrid: A Comparative Study. Energies. 2018; 11 (8):2167.

Chicago/Turabian Style

Luis Orlando Polanco Vasquez; Cristian Andrés Carreño Meneses; Alejandro Pizano Martínez; Juana López Redondo; Manuel Pérez García; José Domingo Álvarez Hervás. 2018. "Optimal Energy Management within a Microgrid: A Comparative Study." Energies 11, no. 8: 2167.

Research article
Published: 17 July 2018 in The International Journal of Electrical Engineering & Education
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State estimation is one of the most important processes to perform a reliable monitoring and control of the steady-state operating condition of modern electric power systems; thus, it is currently a fundamental part in the development of research to enhance the monitoring and security of the smart grids operation. This important topic is taught in advanced courses of operation and control of power systems, for graduate and undergraduate power engineering students. However, the most used software packages for simulation and analysis of power systems by researchers, students, and educators have put little attention on the state estimation module. Due to this fact, this paper proposes an approach to develop the computational implementation of a practical educational tool for state estimation of electric power systems using the MATLAB optimization toolbox. In this proposal, the formulation of the state estimation problem consists of developing a general digital code to implement an objective function based on the weighted least squares method. While the lsqnonlin function of the MATLAB optimization toolbox solves the formulated state estimation problem. Simplifying both research and educational processes, this tool helps graduate and undergraduate students to improve learning, understanding, and the times of implementation and development of research in state estimation. Simulations of an equivalent model of the Mexican interconnected power system consisting of 190 buses and 46 machines are used to test and validate the proposal performance.

ACS Style

Ea Zamora-Cárdenas; Alejandro Pizano-Martínez; Jose Lozano; Vj Gutiérrez-Martínez; R Cisneros-Magaña. Computational development of a practical educational tool for state estimation of power systems using the MATLAB optimization toolbox. The International Journal of Electrical Engineering & Education 2018, 56, 105 -123.

AMA Style

Ea Zamora-Cárdenas, Alejandro Pizano-Martínez, Jose Lozano, Vj Gutiérrez-Martínez, R Cisneros-Magaña. Computational development of a practical educational tool for state estimation of power systems using the MATLAB optimization toolbox. The International Journal of Electrical Engineering & Education. 2018; 56 (2):105-123.

Chicago/Turabian Style

Ea Zamora-Cárdenas; Alejandro Pizano-Martínez; Jose Lozano; Vj Gutiérrez-Martínez; R Cisneros-Magaña. 2018. "Computational development of a practical educational tool for state estimation of power systems using the MATLAB optimization toolbox." The International Journal of Electrical Engineering & Education 56, no. 2: 105-123.

Proceedings article
Published: 01 November 2017 in 2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)
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Voltage sags are one of the most common and serious problems present in the distribution electrical systems, that affect the power quality in a significant way. Through the Dynamic Voltage Restorer (DVR), as a device for mitigating voltage variations, good results have been obtained. In this paper, it is analyzed a DVR topology based on the functionality of a Matrix Converter to generate the compensation voltage needed to compensate deep voltage sags. The DVR is placed on the load side of the system, taking the compensation energy from the load bus after the compensation has taken place, in order to be able to attenuate voltage sags. The model for the system is developed in the time dq0 reference frame as well as the controller. Finally, the analysis for the closed loop system stability is carried out and in order to verify the performance of the compensation system, and numerical simulations implemented in SimpowerSystems™ of Matlab ® /Simulink are presented.

ACS Style

L. Ramon Merchan-Villalba; Cristian A. Carreno-Meneses; A. Pizano-Martinez; E. Arnoldo Zamora-Cardenas; X. Gonzalez-Ramirez; Jose M. Lozano-Garcia. Load-side DVR based on matrix converter for deep voltage sags compensation. 2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) 2017, 1 -6.

AMA Style

L. Ramon Merchan-Villalba, Cristian A. Carreno-Meneses, A. Pizano-Martinez, E. Arnoldo Zamora-Cardenas, X. Gonzalez-Ramirez, Jose M. Lozano-Garcia. Load-side DVR based on matrix converter for deep voltage sags compensation. 2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC). 2017; ():1-6.

Chicago/Turabian Style

L. Ramon Merchan-Villalba; Cristian A. Carreno-Meneses; A. Pizano-Martinez; E. Arnoldo Zamora-Cardenas; X. Gonzalez-Ramirez; Jose M. Lozano-Garcia. 2017. "Load-side DVR based on matrix converter for deep voltage sags compensation." 2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) , no. : 1-6.

Journal article
Published: 01 December 2016 in IEEE Transactions on Power Systems
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This paper proposes a novel active power redispatch sequential approach to solve the transient stability-constrained optimal power flow (TSC-OPF) problem for the preventive control of transient stability. Based on an independent transient stability assessment of the power system for a given contingency scenario, two proposed power redispatch constraints are formulated and embedded into a conventional OPF formulation. Since these two new constraints only depend on steady-state variables, the dimension of the resulting TSC-OPF model is similar to that of a conventional OPF model and can be solved by standard optimization methods to perform a nonheuristic active power redispatch. The stabilization process is performed by sequentially solving the optimization and the transient stability problems until a suitable generation dispatch that provides a transiently stable equilibrium point is assessed. The validity and the effectiveness of the proposed method are numerically demonstrated in the WSCC three-machine, nine-bus system and an equivalent model of the Mexican power system.

ACS Style

Alejandro Pizano-Martinez; Claudio R. Fuerte-Esquivel; Enrique Arnoldo Zamora-Cardenas; Jose Merced Lozano-Garcia. Directional Derivative-Based Transient Stability-Constrained Optimal Power Flow. IEEE Transactions on Power Systems 2016, 32, 3415 -3426.

AMA Style

Alejandro Pizano-Martinez, Claudio R. Fuerte-Esquivel, Enrique Arnoldo Zamora-Cardenas, Jose Merced Lozano-Garcia. Directional Derivative-Based Transient Stability-Constrained Optimal Power Flow. IEEE Transactions on Power Systems. 2016; 32 (5):3415-3426.

Chicago/Turabian Style

Alejandro Pizano-Martinez; Claudio R. Fuerte-Esquivel; Enrique Arnoldo Zamora-Cardenas; Jose Merced Lozano-Garcia. 2016. "Directional Derivative-Based Transient Stability-Constrained Optimal Power Flow." IEEE Transactions on Power Systems 32, no. 5: 3415-3426.

Conference paper
Published: 01 November 2016 in 2016 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)
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In this paper, the design of an output filter for the matrix converter when it operates as series and shunt power compensator is presented. For each of the synchronous grid-tie applications mentioned, the matrix converter is modeled as a voltage and current source correspondingly. The developed filter is comprised only by passive storage elements, in order to improve the efficiency of the overall compensation system and its design is based on a linear control law. Since the proposed filter topology does not include passive damping elements, the control strategy utilized ensures the stability and an adequate transient response of the compensator. The operating limits of the compensator are found analytically, which indicate the maximum power that can be injected to the main grid under the operative conditions considered. Finally, detailed simulations were carried out in order to demonstrate the effectiveness of the proposed filter design and the results obtained are used to verify the proper operation of the matrix converter in power compensation applications.

ACS Style

L.R. Merchan; J.M. Lozano Garcia; Alejandro Pizano-Martínez; E.A. Zamora-Cardenas; H.J. Estrada-Garcia; L.C. Razo-Vargas. Output filter control for matrix converter in synchronous applications. 2016 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) 2016, 1 -7.

AMA Style

L.R. Merchan, J.M. Lozano Garcia, Alejandro Pizano-Martínez, E.A. Zamora-Cardenas, H.J. Estrada-Garcia, L.C. Razo-Vargas. Output filter control for matrix converter in synchronous applications. 2016 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC). 2016; ():1-7.

Chicago/Turabian Style

L.R. Merchan; J.M. Lozano Garcia; Alejandro Pizano-Martínez; E.A. Zamora-Cardenas; H.J. Estrada-Garcia; L.C. Razo-Vargas. 2016. "Output filter control for matrix converter in synchronous applications." 2016 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) , no. : 1-7.

Conference paper
Published: 01 September 2016 in 2016 IEEE PES Transmission & Distribution Conference and Exposition-Latin America (PES T&D-LA)
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A different approach for formulating the sequential TSC-OPF problem is proposed in this paper, where only two power re-dispatch constraints are added to a conventional OPF model to formulate the proposed TSC-OPF model. These two constraints are derived from a proposed best direction vector that provides the power re-dispatch direction in which the rotor angular deviations at the time to instability decrease at the maximum rate of change. In this way, the resulting TSC-OPF model forces the magnitude and direction of the power re-dispatch in order to steer the power system operation state to a transiently stable equilibrium point. The effectiveness of the proposed method is numerically demonstrated in the WSCC 3-machine, 9-bus system.

ACS Style

Alejandro Pizano-Martínez; C.R. Fuerte-Esquivel; E. Zamora-Cardenas; Jose Lozano. A novel sequential transient stability constrained optimal power flow. 2016 IEEE PES Transmission & Distribution Conference and Exposition-Latin America (PES T&D-LA) 2016, 1 -5.

AMA Style

Alejandro Pizano-Martínez, C.R. Fuerte-Esquivel, E. Zamora-Cardenas, Jose Lozano. A novel sequential transient stability constrained optimal power flow. 2016 IEEE PES Transmission & Distribution Conference and Exposition-Latin America (PES T&D-LA). 2016; ():1-5.

Chicago/Turabian Style

Alejandro Pizano-Martínez; C.R. Fuerte-Esquivel; E. Zamora-Cardenas; Jose Lozano. 2016. "A novel sequential transient stability constrained optimal power flow." 2016 IEEE PES Transmission & Distribution Conference and Exposition-Latin America (PES T&D-LA) , no. : 1-5.

Journal article
Published: 05 January 2016 in Electric Power Systems Research
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This paper proposes a practical approach for implementing a hybrid state estimator by considering SCADA and PMU measurements in VSC-HVDC transmission links under a unified framework of reference. A proposed formulation for the PMU measurements associated with the VSC-HVDC state variables is derived from the first principles and is implemented into a weighted least square-based state estimation algorithm. In order to avoid numerical problems of convergence of the proposed state estimation approach, the set of current phasor measurements is represented in rectangular coordinates, such that their corresponding variances are also recalculated according to the uncertainty propagation theory. The state estimation process uses the measurement of one voltage phase angle as the global reference for the rest of voltage phase angles estimated at network buses and VSC-HVDC's voltage source converters. The proposed formulation improves the accuracy at which both network and VSC-HVDC state variables are simultaneously estimated based on the measurements provided by a SCADA system and PMUs. A Mexican interconnected 190-bus equivalent system is used as the test system in order to validate the effectiveness of the proposed hybrid state estimator.

ACS Style

E.A. Zamora-Cárdenas; C.R. Fuerte-Esquivel; Alejandro Pizano-Martínez; H.J. Estrada-García. Hybrid state estimator considering SCADA and synchronized phasor measurements in VSC-HVDC transmission links. Electric Power Systems Research 2016, 133, 42 -50.

AMA Style

E.A. Zamora-Cárdenas, C.R. Fuerte-Esquivel, Alejandro Pizano-Martínez, H.J. Estrada-García. Hybrid state estimator considering SCADA and synchronized phasor measurements in VSC-HVDC transmission links. Electric Power Systems Research. 2016; 133 ():42-50.

Chicago/Turabian Style

E.A. Zamora-Cárdenas; C.R. Fuerte-Esquivel; Alejandro Pizano-Martínez; H.J. Estrada-García. 2016. "Hybrid state estimator considering SCADA and synchronized phasor measurements in VSC-HVDC transmission links." Electric Power Systems Research 133, no. : 42-50.

Conference paper
Published: 01 November 2014 in 2014 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)
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This paper presents a methodology to calculate the available transfer capability in AC transmission links considering transient stability constraints. The problem is formulated and solved as an optimal power flow problem, which aims to maximize the active power flow through selected transmission links taking into account steady state and transient stability constraints. This model is formulated in the Euclidian space, where the transient stability limit is represented by a single stability constraint expressed only in terms of steady state variables. The stability constraint is derived from the sensitivity analysis carried out from the single machine equivalent method (SIME). Thus, the resulting optimization model is similar to the conventional optimal power flow model. The application of the proposal is numerically illustrated considering an equivalent model of the interconnected Mexican system composed by 190 bus, 46 generators and 265 transmission lines.

ACS Style

Miguel Chavez-Lugo; Claudio R. Fuerte-Esquivel; Alejandro Pizano-Martínez. Computation of available transfer capability considering transient stability constraints. 2014 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) 2014, 1 -6.

AMA Style

Miguel Chavez-Lugo, Claudio R. Fuerte-Esquivel, Alejandro Pizano-Martínez. Computation of available transfer capability considering transient stability constraints. 2014 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC). 2014; ():1-6.

Chicago/Turabian Style

Miguel Chavez-Lugo; Claudio R. Fuerte-Esquivel; Alejandro Pizano-Martínez. 2014. "Computation of available transfer capability considering transient stability constraints." 2014 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) , no. : 1-6.

Proceedings article
Published: 01 November 2014 in 2014 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)
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This paper proposes a practical approach to incorporate a High Voltage Direct-current (HVDC) link in a state estimation algorithm based on the technique Weighted Least Squares (WLS). The power measurements of the HVDC are directly appended to traditional measurements to estimate the equilibrium point of the power system. The proposed approach simultaneously upgrades the estimated values of the state variables of the HVDC controllers and the state variables of the rest of the electric network, to obtain a unified solution in a single-frame of reference. Results are presented to demonstrate the effectiveness of the proposed approach to assess the estimation of the system state and to set the parameters of the HVDC controllers for given control specifications.

ACS Style

E.A. Zamora-Cardenas; Alejandro Pizano-Martínez; M.A. Gomez-Martinez; J.M. Lozano-Garcia; H.J. Estrada-García; C.R. Fuerte-Esquivel. Practical implementation of a VSC-HVDC in WLS-based state estimation. 2014 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) 2014, 1 -6.

AMA Style

E.A. Zamora-Cardenas, Alejandro Pizano-Martínez, M.A. Gomez-Martinez, J.M. Lozano-Garcia, H.J. Estrada-García, C.R. Fuerte-Esquivel. Practical implementation of a VSC-HVDC in WLS-based state estimation. 2014 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC). 2014; ():1-6.

Chicago/Turabian Style

E.A. Zamora-Cardenas; Alejandro Pizano-Martínez; M.A. Gomez-Martinez; J.M. Lozano-Garcia; H.J. Estrada-García; C.R. Fuerte-Esquivel. 2014. "Practical implementation of a VSC-HVDC in WLS-based state estimation." 2014 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) , no. : 1-6.

Original articles
Published: 09 September 2014 in Electric Power Components and Systems
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—This article proposes a new transient stability constraint that permits quantifying the degree of instability of a power system from the active power dispatched by generators. Based on this constraint, which is derived from both single machine equivalent and trajectory sensitivity methods, a new transient stability-constrained optimal power flow is formulated in the Euclidian space to preventively control the transient stability in realistic power systems. The validity and the effectiveness of the proposed method are numerically demonstrated in the WSCC 3-machine, 9-bus and Mexican 46-machine, 190-bus systems.

ACS Style

Alejandro Pizano-Martínez; Enrique Arnoldo Zamora Cárdenas; Claudio Rubén Fuerte-Esquivel; Daniel Ruiz-Vega. Unified Analysis of Single Machine Equivalent and Trajectory Sensitivity to Formulate a Novel Transient Stability-constrained Optimal Power Flow Approach. Electric Power Components and Systems 2014, 42, 1386 -1397.

AMA Style

Alejandro Pizano-Martínez, Enrique Arnoldo Zamora Cárdenas, Claudio Rubén Fuerte-Esquivel, Daniel Ruiz-Vega. Unified Analysis of Single Machine Equivalent and Trajectory Sensitivity to Formulate a Novel Transient Stability-constrained Optimal Power Flow Approach. Electric Power Components and Systems. 2014; 42 (13):1386-1397.

Chicago/Turabian Style

Alejandro Pizano-Martínez; Enrique Arnoldo Zamora Cárdenas; Claudio Rubén Fuerte-Esquivel; Daniel Ruiz-Vega. 2014. "Unified Analysis of Single Machine Equivalent and Trajectory Sensitivity to Formulate a Novel Transient Stability-constrained Optimal Power Flow Approach." Electric Power Components and Systems 42, no. 13: 1386-1397.

Journal article
Published: 01 April 2014 in Electric Power Systems Research
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ACS Style

Alejandro Pizano-Martínez; C.R. Fuerte-Esquivel; E. Zamora-Cárdenas; Daniel Ruiz-Vega. Selective transient stability-constrained optimal power flow using a SIME and trajectory sensitivity unified analysis. Electric Power Systems Research 2014, 109, 32 -44.

AMA Style

Alejandro Pizano-Martínez, C.R. Fuerte-Esquivel, E. Zamora-Cárdenas, Daniel Ruiz-Vega. Selective transient stability-constrained optimal power flow using a SIME and trajectory sensitivity unified analysis. Electric Power Systems Research. 2014; 109 ():32-44.

Chicago/Turabian Style

Alejandro Pizano-Martínez; C.R. Fuerte-Esquivel; E. Zamora-Cárdenas; Daniel Ruiz-Vega. 2014. "Selective transient stability-constrained optimal power flow using a SIME and trajectory sensitivity unified analysis." Electric Power Systems Research 109, no. : 32-44.

Conference paper
Published: 01 November 2013 in 2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC)
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A novel approach based on both single machine equivalent (SIME) and trajectory sensitivity methods is proposed to formulate a transient stability-constrained optimal power flow (TSC-OPF) in the Euclidian space, where only one single stability constraint is necessary in the optimization problem to represent all dynamic and transient stability constraints of the multi-machine system, resulting in a tractable approach to the preventive control of transient stability in realistic power systems. A unified framework of time domain analysis is proposed, where the transient stability, trajectory sensitivity and SIME analyses are all combined to assess the system's stability and to compute the sensitivity coefficients of the proposed transient stability constraint. Based on these sensitivity coefficients, a non-heuristic selection criterion is proposed to perform the preventive control by rescheduling only a selected number of generators, which is the commonly accepted practice followed by the system's operators. The validity and the effectiveness of the proposed method is numerically demonstrated in the Mexican 46-machine, 190-bus system.

ACS Style

Alejandro Pizano-Martínez; C. R. Fuerte-Esquivel; E. A. Zamora-Cardenas; Daniel Ruiz-Vega. Non-heuristic selection criterion for transient stability-constrained optimal power flow analysis. 2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC) 2013, 1 -6.

AMA Style

Alejandro Pizano-Martínez, C. R. Fuerte-Esquivel, E. A. Zamora-Cardenas, Daniel Ruiz-Vega. Non-heuristic selection criterion for transient stability-constrained optimal power flow analysis. 2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC). 2013; ():1-6.

Chicago/Turabian Style

Alejandro Pizano-Martínez; C. R. Fuerte-Esquivel; E. A. Zamora-Cardenas; Daniel Ruiz-Vega. 2013. "Non-heuristic selection criterion for transient stability-constrained optimal power flow analysis." 2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC) , no. : 1-6.

Proceedings article
Published: 01 January 2013 in 2013 IEEE Power & Energy Society General Meeting
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This paper proposes the formulation of a new stability constraint to preventively control the transient stability of electric power systems. The transient stability constraint is formulated based on the linearization of the stability margin provided by the SIngle Machine Equivalent (SIME) method with respect to the mechanical powers of generators. Since this margin is not an explicit function of these parameters, an analytical formulation of trajectory sensitivities is used to achieve this goal. In this context, the transient stability study as well as the trajectory sensitivity and SIME methods are all integrated into a unified framework of time domain analysis to construct the proposed transient stability constraint. To numerically show the prowess of the proposed constraint, the Mexican 46-machine, 190-bus system is used as test system.

ACS Style

Alejandro Pizano-Martínez; E. A. Zamora-Cardenas; C. R. Fuerte-Esquivel; Daniel Ruiz-Vega; Pizano-Martinez A.. SIME and trajectory sensitivity-based transient stability-constrained optimal power flow. 2013 IEEE Power & Energy Society General Meeting 2013, 1 -5.

AMA Style

Alejandro Pizano-Martínez, E. A. Zamora-Cardenas, C. R. Fuerte-Esquivel, Daniel Ruiz-Vega, Pizano-Martinez A.. SIME and trajectory sensitivity-based transient stability-constrained optimal power flow. 2013 IEEE Power & Energy Society General Meeting. 2013; ():1-5.

Chicago/Turabian Style

Alejandro Pizano-Martínez; E. A. Zamora-Cardenas; C. R. Fuerte-Esquivel; Daniel Ruiz-Vega; Pizano-Martinez A.. 2013. "SIME and trajectory sensitivity-based transient stability-constrained optimal power flow." 2013 IEEE Power & Energy Society General Meeting , no. : 1-5.

Journal article
Published: 02 January 2012 in Electric Power Components and Systems
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This article presents an enhanced model of a two-terminal voltage source converter based high-voltage DC system suitable for optimal power flow analysis in electric power systems. Both the back-to-back and the point-to-point voltage source converter and high-voltage DC schemes are addressed. Unlike to other proposals, the new model considers the operational constraints associated with the MVA ratings of the converters. The proposed model is implemented in a Newton-based optimal power flow approach and tested on the Baja California North 160-bus realistic power system. Simulation results show that a practically feasible optimal power flow solution can be obtained by considering the MVA converters' limits.

ACS Style

Alejandro Pizano-Martínez; Claudio R. Fuerte-Esquivel; César Angeles-Camacho. Voltage Source Converter Based High-voltage DC System Modeling for Optimal Power Flow Studies. Electric Power Components and Systems 2012, 40, 312 -320.

AMA Style

Alejandro Pizano-Martínez, Claudio R. Fuerte-Esquivel, César Angeles-Camacho. Voltage Source Converter Based High-voltage DC System Modeling for Optimal Power Flow Studies. Electric Power Components and Systems. 2012; 40 (3):312-320.

Chicago/Turabian Style

Alejandro Pizano-Martínez; Claudio R. Fuerte-Esquivel; César Angeles-Camacho. 2012. "Voltage Source Converter Based High-voltage DC System Modeling for Optimal Power Flow Studies." Electric Power Components and Systems 40, no. 3: 312-320.

Journal article
Published: 06 January 2011 in IEEE Transactions on Power Systems
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This paper presents a new, significantly improved, approach to formulate a global transient stability-constrained optimal power flow (TSC-OPF), where the sets of dynamic and transient stability constraints to be considered in the optimization process are reduced to one single stability constraint. This constraint is derived from dynamic information provided by the SIngle Machine Equivalent (SIME) method and is only expressed in terms of steady-state variables, which allows us to diminish the length of the time-domain simulation to be included into the global TSC-OPF to a single (initial) time step. In this way, the size of the resulting optimization problem is reduced to one very similar to that of a conventional OPF, overcoming the main drawback of global TSC-OPF techniques (its huge dimension) while maintaining its accuracy and improving its practical application to real power networks. Effectiveness of the proposal is demonstrated by numerical examples on the WSCC three-machine, nine-bus system and the Mexican 46-machine, 190-bus system.

ACS Style

Alejandro Pizano-Martínez; Claudio R. Fuerte-Esquivel; Daniel Ruiz-Vega. A New Practical Approach to Transient Stability-Constrained Optimal Power Flow. IEEE Transactions on Power Systems 2011, 26, 1686 -1696.

AMA Style

Alejandro Pizano-Martínez, Claudio R. Fuerte-Esquivel, Daniel Ruiz-Vega. A New Practical Approach to Transient Stability-Constrained Optimal Power Flow. IEEE Transactions on Power Systems. 2011; 26 (3):1686-1696.

Chicago/Turabian Style

Alejandro Pizano-Martínez; Claudio R. Fuerte-Esquivel; Daniel Ruiz-Vega. 2011. "A New Practical Approach to Transient Stability-Constrained Optimal Power Flow." IEEE Transactions on Power Systems 26, no. 3: 1686-1696.