Publication:
Increasing hosting capacity of distribution feeders through energy storage and smart inverter functions
Increasing hosting capacity of distribution feeders through energy storage and smart inverter functions
Authors
Huaman Rivera, Anny
Embargoed Until
Advisor
Irizarry Rivera, Agustín A.
College
College of Engineering
Department
Department of Computer Science and Engineering
Degree Level
M.S.
Publisher
Date
2022-12-06
Abstract
Los sistemas de energía eléctrica han estado en constante transformación, específicamente los sistemas de distribución, ya que la penetración de los recursos energéticos distribuidos (DER) fotovoltaicos (FV) ha aumentado en los ´últimos años. Sin embargo, los DER fotovoltaicos pueden provocar un aumento de los flujos inversos de potencia, causando violaciones de tensión y térmicas. Por este motivo, es necesario calcular la capacidad de acogida (HC) máxima permitida de la penetración FV conectada a las redes de baja tensión para garantizar un funcionamiento adecuado del sistema de distribución. Esta tesis se centra en el estudio de la capacidad máxima de alojamiento de un alimentador, la evaluación de los efectos del aumento de la penetración FV, y la mitigación de estos efectos adversos a través de los sistemas de almacenamiento de energía residencial (RESS) y las funciones del inversor inteligente, específicamente Volt-VAR.
Se utilizo OpenDSS, junto con MATLAB, para modelar los sistemas de distribución bajo diferentes niveles de penetración FV.
Los resultados muestran que los factores más limitantes para la HC son las violaciones de tensión y las violaciones térmicas. Las simulaciones permitieron identificar con éxito los nodos de los alimentadores en los que se producen violaciones de tensión y térmicas. El estudio demuestra que la implementación de RESS y de la función Volt-VAR aumenta la HC de un alimentador, garantizando el funcionamiento del sistema de distribución.
Electric power systems have been in constant transformation, specifically distribution systems, as the penetration of photovoltaic (PV) distributed energy resources (DER) has increased in recent years. However, PV DERs can lead to an increase in reverse power flows, causing voltage and thermal violations. For this reason, it is necessary to calculate the maximum allowable hosting capacity (HC) of PV penetration connected to low voltage networks to guarantee adequate distribution system operation. This thesis focuses on studying a feeder’s maximum accommodation capacity, evaluating the effects of increasing PV penetration, and mitigating these adverse effects through residential energy storage systems (RESS) and smart inverter functions, specifically Volt-VAR. OpenDSS was used, along with MATLAB, to model distribution systems under different levels of PV penetration. Results show that the most limiting factors for the HC are voltage violations and thermal violations. The simulations were able to successfully identify feeder nodes where voltage and thermal violations occur. The study demonstrates that RESS and the Volt-VAR function implementation increases a feeder’s HC, guaranteeing distribution system operation.
Electric power systems have been in constant transformation, specifically distribution systems, as the penetration of photovoltaic (PV) distributed energy resources (DER) has increased in recent years. However, PV DERs can lead to an increase in reverse power flows, causing voltage and thermal violations. For this reason, it is necessary to calculate the maximum allowable hosting capacity (HC) of PV penetration connected to low voltage networks to guarantee adequate distribution system operation. This thesis focuses on studying a feeder’s maximum accommodation capacity, evaluating the effects of increasing PV penetration, and mitigating these adverse effects through residential energy storage systems (RESS) and smart inverter functions, specifically Volt-VAR. OpenDSS was used, along with MATLAB, to model distribution systems under different levels of PV penetration. Results show that the most limiting factors for the HC are voltage violations and thermal violations. The simulations were able to successfully identify feeder nodes where voltage and thermal violations occur. The study demonstrates that RESS and the Volt-VAR function implementation increases a feeder’s HC, guaranteeing distribution system operation.
Keywords
Hosting capacity,
Residential energy storage systems,
Volt-VAR,
Smart inverter
Residential energy storage systems,
Volt-VAR,
Smart inverter
Usage Rights
Persistent URL
Cite
Huaman Rivera, A. (2022). Increasing hosting capacity of distribution feeders through energy storage and smart inverter functions [Thesis]. Retrieved from https://hdl.handle.net/20.500.11801/2999