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Capacitor Condition Monitoring Method for Low-Capacitance StatComs: An Online Approach Using the Inherent Second-Harmonic Oscillations

  • Datos identificativos

    Identificador: imarina:9324063
    Autores:
    Ramos, ERLeyva, RLiu, QXFarivar, GGPou, J
    Resumen:
    The cascaded H-bridge low-capacitance static compensator (LC-StatCom) deliberately reduces the capacitor size while allowing large oscillations in capacitor voltages. When a capacitor deteriorates, its capacitance decreases or/and its equivalent series resistance (ESR) increases, compromising StatCom performance and safety. For this reason, the condition monitoring of the capacitors is important to schedule maintenance before failure. This letter introduces a cost-effective and nonintrusive method to monitor the condition of capacitors online. The proposed method offers real-time monitoring without requiring additional hardware or signal injection. The method uses averaged low-frequency signals instead of instantaneous high-frequency signals that can be corrupted by undesired high-frequency noise. Specifically, the method takes advantage of the inherent twice-fundamental-frequency oscillations on the capacitor voltage and current to identify the ESR and capacitance values. The method takes into account the influence of antialiasing filters required for sampling process. The letter shows experimental results that validate the fast and accurate performance of the proposed capacitor condition monitoring.
  • Otros:

    Autor según el artículo: Ramos, ER; Leyva, R; Liu, QX; Farivar, GG; Pou, J
    Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/es de la URV: Leyva Grasa, Ramon
    Palabras clave: Voltage measurement Static compensator (statcom) Reliability Oscillators Monitoring Frequency conversion Estimation Equivalent series resistance (esr) Diagnostics Dc-link capacitor Condition monitoring Cascaded h-bridge (chb) Capacitors Capacitance Automatic voltage control static compensator (statcom) reliability estimation equivalent series resistance (esr) diagnostics dc-link capacitor condition monitoring
    Resumen: The cascaded H-bridge low-capacitance static compensator (LC-StatCom) deliberately reduces the capacitor size while allowing large oscillations in capacitor voltages. When a capacitor deteriorates, its capacitance decreases or/and its equivalent series resistance (ESR) increases, compromising StatCom performance and safety. For this reason, the condition monitoring of the capacitors is important to schedule maintenance before failure. This letter introduces a cost-effective and nonintrusive method to monitor the condition of capacitors online. The proposed method offers real-time monitoring without requiring additional hardware or signal injection. The method uses averaged low-frequency signals instead of instantaneous high-frequency signals that can be corrupted by undesired high-frequency noise. Specifically, the method takes advantage of the inherent twice-fundamental-frequency oscillations on the capacitor voltage and current to identify the ESR and capacitance values. The method takes into account the influence of antialiasing filters required for sampling process. The letter shows experimental results that validate the fast and accurate performance of the proposed capacitor condition monitoring.
    Áreas temáticas: Interdisciplinar Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering Ciências agrárias i Ciência da computação
    Direcció de correo del autor: ramon.leyva@urv.cat
    Identificador del autor: 0000-0001-6431-3688
    Fecha de alta del registro: 2024-08-03
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://ieeexplore.ieee.org/document/10153678
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Ieee Transactions On Power Electronics. 38 (9): 10559-10562
    Referencia de l'ítem segons les normes APA: Ramos, ER; Leyva, R; Liu, QX; Farivar, GG; Pou, J (2023). Capacitor Condition Monitoring Method for Low-Capacitance StatComs: An Online Approach Using the Inherent Second-Harmonic Oscillations. Ieee Transactions On Power Electronics, 38(9), 10559-10562. DOI: 10.1109/TPEL.2023.3286447
    DOI del artículo: 10.1109/TPEL.2023.3286447
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2023
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Electrical and Electronic Engineering,Engineering, Electrical & Electronic
    Voltage measurement
    Static compensator (statcom)
    Reliability
    Oscillators
    Monitoring
    Frequency conversion
    Estimation
    Equivalent series resistance (esr)
    Diagnostics
    Dc-link capacitor
    Condition monitoring
    Cascaded h-bridge (chb)
    Capacitors
    Capacitance
    Automatic voltage control
    static compensator (statcom)
    reliability
    estimation
    equivalent series resistance (esr)
    diagnostics
    dc-link capacitor
    condition monitoring
    Interdisciplinar
    Engineering, electrical & electronic
    Engenharias iv
    Engenharias iii
    Electrical and electronic engineering
    Ciências agrárias i
    Ciência da computação
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