Passive Fault-Tolerant Control Strategies for Power Converter in a Hybrid Microgrid

Jadidi, Saeedreza; Badihi, Hamed; Zhang, Youmin

doi:10.3390/en13215625

Cited by 34 publications

(14 citation statements)

References 45 publications

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“…A DRS that mitigates severe faults in a PV installation requires a fault detection subsystem. In this regards, several authors have developed fault detection methods, e.g., [8][9][10][11][12][13][14]. Fault detection methods may use images such as the ones taken by unmanned aerial systems (UASs) that have been proved useful for large PV plants given that the visual data about the site can be taken in relatively short time and does not require additional measurement circuitry [15,16].…”

Section: Introductionmentioning

confidence: 99%

Automated Fault Management System in a Photovoltaic Array: A Reconfiguration-Based Approach

Murillo-Soto

Meza

2021

Energies

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This work proposes an automated reconfiguration system to manage two types of faults in any position inside the solar arrays. The faults studied are the short-circuit to ground and the open wires in the string. These faults were selected because they severely affect power production. By identifying the affected panels and isolating the faulty one, it is possible to recover part of the power loss. Among other types of faults that the system can detect and locate are: diode short-circuit, internal open-circuit, and the degradation of the internal parasitic serial resistance. The reconfiguration system can detect, locate the above faults, and switch the distributed commutators to recover most of the power loss. Moreover, the system can return automatically to the previous state when the fault has been repaired. A SIMULINK model has been built to prove this automatic system, and a simulated numerical experiment has been executed to test the system response to the faults mentioned. The results show that the recovery of power is more than 90%, and the diagnosis accuracy and sensitivity are both 100% for this numerical experiment.

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Section: Introductionmentioning

confidence: 99%

Automated Fault Management System in a Photovoltaic Array: A Reconfiguration-Based Approach

Murillo-Soto

Meza

2021

Energies

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“…The study of [33], provides a comprehensive review of model predictive control (MPC) in individual and interconnected microgrids, including both converter-level and grid level control strategies applied to three layers of the hierarchical control architecture. The study of [34] looked at fault effects due to common power-loss malfunctions in solar photovoltaic arrays in the presence of microgrid uncertainties and disturbances. In the [35] study, a model predictive control strategy (with a 24-h prediction horizon) is proposed to reduce the operational cost of microgrids.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Control of Integrated Wind Farm Battery Energy Storage Systems for Grid Connection

Gwabavu

Raji

2021

Sustainability

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The intermittent nature of wind power is a major challenge for wind as an energy source. Wind power generation is therefore difficult to plan, manage, sustain, and track during the year due to different weather conditions. The uncertainty of energy loads and power generation from wind energy sources heavily affects the system stability. The battery energy storage system (BESS) plays a fundamental role in controlling and improving the efficiency of renewable energy sources. Stochasticity of wind speed and reliability of the main system components are considered. This paper presents a dynamical control system based on model predictive control (MPC) in real time, to make full use of the flexibility and controllability of energy storage to mitigate problems of wind farm variability and intermittency. The control scheme first plans the expected output, then stochastic optimization is used to optimize grid integrated wind farm BESS output power, develop an optimal operation strategy for BESS, and prevent some unpredictable conditions that may have impacts on the stability of the system. The results show that the proposed method can reduce grid-connected wind power fluctuations, limit system faults, control command for the BESS in the dispatching period, and ensure system stability for grid connection.

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“…In this context, related work investigated cellular-and micro-grids as suitable architectures to support the stability of future energy grids by enabling the separation of energy grids into subparts [7][8][9]. Based on these architectures, novel concepts were developed that leverage the properties of these architectures to support the resilient operation of energy grids [10][11][12]. However, within these works, prosumers participate within energy grids as overwhelmingly passive entities.…”

Section: Introductionmentioning

confidence: 99%

Holonic System Model for Resilient Energy Grid Operation

et al. 2021

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The transformation of energy grids towards smart grids is driven by numerous political, economic, and ecological goals. As part of this process, the centralized top-down architecture of energy grids changes towards increasingly decentralized structures. It is widely accepted that the challenges emerging from this transition threaten the resilient operation of energy grids. For instance, the volatility of renewable energy sources challenges the required balance between demand and supply; their distribution in the energy grid likewise complicates their coordination. Holarchies are a promising (systems-of-systems) architectural pattern for smart grids fostering fast isolation and self-sustained operation of subparts (so-called holons), as well as supporting dynamic reconfigurations of the grid’s structure. To leverage these properties to increase the resilience of smart grids, we propose a system model that combines a holonic architecture and locally available resources offered by prosumers. Our model organizes the participants in the grid as holarchy and enables the application of fine-grained control mechanisms. We show the capabilities of the model by resolving an overproduction situation and a situation of severe electricity scarcity using a modified binary ant colony optimization approach. Our evaluation with the simulation environment HOLEG shows that the system model and the proposed algorithm can quickly mitigate balancing problems in holonic energy grids.

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Passive Fault-Tolerant Control Strategies for Power Converter in a Hybrid Microgrid

Cited by 34 publications

References 45 publications

Automated Fault Management System in a Photovoltaic Array: A Reconfiguration-Based Approach

Automated Fault Management System in a Photovoltaic Array: A Reconfiguration-Based Approach

Dynamic Control of Integrated Wind Farm Battery Energy Storage Systems for Grid Connection

Holonic System Model for Resilient Energy Grid Operation

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