Searched for: author%3A%22de+Jesus+Chavez%2C+Jose%22
(1 - 19 of 19)
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Bhandia, R. (author), de Jesus Chavez, Jose (author), Cvetkovic, M. (author), Garcia-Vite, Pedro M. (author), Popov, M. (author), Palensky, P. (author)
Anticipating failures is vital for maintaining a reliable power supply. Advanced measurement devices in the grid generate vast data that contains valuable information on grid operations. Initial signatures of an incipient failure are often reflected in this data in the form of electrical waveform distortions. Conventional protection schemes are...
review 2024
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Yang, Zhe (author), Liu, Zhou (author), Zhang, Qi (author), Chen, Zhe (author), de Jesus Chavez, Jose (author), Popov, M. (author)
The traditional fault control strategy of converter-interfaced renewable energy sources (CIRESs) may bring about a lower sensitivity level or misoperation of fault component-based directional elements. To overcome this problem, a new control scheme is proposed to adjust sequence impedance angles of CIRESs by computing suitable current...
journal article 2023
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Bakhshi-Jafarabadi, Reza (author), Lekić, A. (author), Dehghan Marvasti, F. (author), de Jesus Chavez, Jose (author), Popov, M. (author)
Overvoltage instability is a growing concern in a standalone low-voltage (LV) microgrid (MG) with non-dispatchable intermittent renewable energies such as residential and commercial photovoltaic generators (PVGs). Several overvoltage controllers used in PV arrays have adopted the concept of standard deviation from the maximum power point (MPP...
journal article 2023
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Herrejón-Pintor, Gilberto A. (author), Melgoza-Vázquez, Enrique (author), de Jesus Chavez, Jose (author)
The controls of most power electronic inverters connected to an electrical power system (EPS) rely on the precise determination of the voltage magnitude, frequency, and phase angle at the point of common coupling. One of the most widely used approaches for measuring these quantities is the phase-locked loop (PLL); however, the precision of this...
journal article 2022
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de Korte, Kasper (author), van Dijk, Gerwin (author), Yelgin, Yilmaz (author), de Jesus Chavez, Jose (author), Popov, M. (author)
conference paper 2022
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Medeiros, R.P. (author), Costa, F.B. (author), Silva, K.M. (author), de Jesus Chavez, Jose (author), Popov, M. (author), Lima Junior, J.R. (author)
Phasor-based differential protection is widely used as the main protection function of the power transformer due to its reliability and ability to discriminate internal from external faults and inrush currents. However, these methods present some delays due to phasor convergence during the fault occurrence and can fail during challenging...
journal article 2022
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de Jesus Chavez, Jose (author), Veerakumar, Nidarshan (author), Popov, M. (author), Palensky, P. (author), Azizi, Sadegh (author), Melgoza, Enrique (author), Terzija, Vladimir (author)
Fault currents may result in cascading failures and even system collapse if not detected and cleared on time. To account for the possibility of failure of primary protection under stressed system conditions, an extra layer of protection is commonly employed, referred to as backup protection. This paper introduces an effective formulation for...
conference paper 2022
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de Jesus Chavez, Jose (author), Popov, M. (author), López, David (author), Azizi, Sadegh (author), Terzija, Vladimir (author)
This paper presents a new fault detection algorithm based on the Fast Discrete Stockwell Transform. The algorithm can improve the functionality of existing distance protection and resolve shortcomings identified during the fault detection process in case of fault occurrence in systems with a high penetration of power electronics-based generators...
journal article 2021
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Bakhshi-Jafarabadi, Reza (author), de Jesus Chavez, Jose (author), Sadeh, Javad (author), Popov, M. (author)
This article proposes a fast and reliable two-level islanding detection method (IDM) for grid-connected photovoltaic system (GCPVS)-based microgrid. In the first level of the proposed IDM, the magnitude of the rate of change of output voltage (ROCOV) is computed. If this variable exceeds a predefined threshold, a disturbance is injected into...
journal article 2020
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Bhandia, R. (author), de Jesus Chavez, Jose (author), Cvetkovic, M. (author), Palensky, P. (author)
A High Impedance Fault (HIF) in the power distribution systems remains mostly undetected by conventional protection schemes due to low fault currents. Apart from degrading the reliability of power supply to customers, HIF can impose a high cost on the utilities due to technical damages. The nonlinear and asymmetric nature of HIF makes its...
journal article 2020
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Mirhosseini, S.S. (author), Liu, S. (author), de Jesus Chavez, Jose (author), Liu, Z. (author), Jamali, Sadegh (author), Popov, M. (author)
In order to test protection performance of future multi-terminal HVDC grids where DC circuit breakers (DC CBs) play an important role, a DC CB model in real time test environment should be developed. It is well known that a DC CB needs to interrupt DC faults very quickly in order to avoid converter damages and to ensure security of supply....
journal article 2020
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Popov, M. (author), de Jesus Chavez, Jose (author), Martinez Carrasco, Eduardo (author), Villén Martínez, Maria Teresa (author), Borroy Vicente, Samuel (author), López Cortón, David (author), Azizi, Sadegh (author), Terzija, Vladimir (author)
This paper deals with a comprehensive analysis to test the performance of available distance protection, that can be used in transmission networks with high penetration of converter-based distribution generation. For this, a new benchmark model has been developed according to the European Network of Transmission System Operators (ENTSO-e)...
conference paper 2020
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Bhandia, R. (author), de Jesus Chavez, Jose (author), Cvetkovic, M. (author), Palensky, P. (author)
Reliable power supply to the consumers is the key goal for power utilities. The two key reliability indices for power utilities are SAIDI and SAIFI. These indices indicate the average duration and frequency of supply interruptions for the consumer. A low value on these indices reflects a reliable and mostly uninterrupted power supply....
conference paper 2020
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Novikov, Alexander (author), de Jesus Chavez, Jose (author), Popov, M. (author)
This paper deals with the investigation of the performance of distance protection in a 400 kV transmission line for a system with high penetration of photovoltaic sources (PV). A grid with a PV plant is designed in RSCAD software environment, which is supported by RTDS. By performing hardware-in-the-loop tests, two commercial relays are...
conference paper 2019
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Liu, S. (author), Liu, Z. (author), de Jesus Chavez, Jose (author), Popov, M. (author)
The main goal of the paper is the modeling of the mechanical circuit breaker (MCB) that can replicate the breaker characteristics in real time environment. The proposed MCB with active current injection is modelled for a system level, which provides adequate representation of the circuit breakers for system analysis studies. External current...
journal article 2019
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Bhandia, R. (author), Cvetkovic, M. (author), de Jesus Chavez, Jose (author), Palensky, P. (author)
Key contributor to normal power grid operations is optimal working of the various power grid equipment/apparatus. Nonoptimal operation of any of this equipment causes power quality problems which can pose great risk to the stability of the grid. Damaged or partially damaged equipment leaves characteristic signatures in the form of current and...
conference paper 2019
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Ruiz, Carlos (author), Medina, Edgar (author), Ramirez, Abner (author), Mehrizi-Sani, Ali (author), de Jesus Chavez, Jose (author), Davoudi, Ali (author), Abdel-rahman, Mohamed (author)
This paper presents an approach to obtain reduced-order models for power networks involving power electronic converters (PEC) via the frequency-domain balanced realizations (FDBR) technique. PECs play an essential role in power processing and energy conversion in modern electrical networks, such as the interconnection of renewable generators,...
journal article 2019
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Bhandia, R. (author), de Jesus Chavez, Jose (author), Cvetkovic, M. (author), Palensky, P. (author)
High Impedance Fault (HIF) is a low fault current event which cannot always be efficiently detected or cleared by conventional protection systems. Voltage or current signal distortions are often a possible indicator of HIF signatures which need to be carefully analyzed. This paper proposes a new technique based on second-difference approach to...
conference paper 2018
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Orozco, Michael (author), de Jesus Chavez, Jose (author), Popov, M. (author), Garcia-Vite, Pedro M. (author)
This paper presents a hybrid methodology to analyze electromagnetic transients in a photovoltaic distributed system. The methodology consists in split the system into two parts: The external zone, where the system is reduced by a dynamic equivalent obtained by the application of Balance Realization (BR) theory and the internal zone, where the...
conference paper 2018
Searched for: author%3A%22de+Jesus+Chavez%2C+Jose%22
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