Evaluation of centralized and distributed microgrid topologies and comparison to Open Energy Systems (OES)

Werth, Annette; Kitamura, Nobuyuki; Matsumoto, Ippei; Tanaka, Kenji

doi:10.1109/eeeic.2015.7165211

Cited by 35 publications

(10 citation statements)

References 4 publications

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“…The number and nature of these modules, as well as the microgrid topologies, vary greatly [1][2][3]. Presently, the modules interconnection is predominantly done using AC buses, but DC microgrids are expected to increase in the coming years [4]. In particular, DC microgrids are very versatile for integration of renewable energy sources and non conventional storage devices, such as photovoltaic panels, wind turbines, lithium batteries, flow batteries, supercapacitors, fuel cells and many others (see Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Stability Criteria for Input Filter Design in Converters with CPL: Applications in Sliding Mode Controlled Power Systems

2019

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Microgrids are versatile systems for integration of renewable energy sources and non-conventional storage devices. Sliding Mode techniques grant excellent features of robustness controlling power conditioning systems, making them highly suitable for microgrid applications. However, problems may arise when a converter is set to behave as a Constant Power Load (CPL). These issues manifest in the stability of internal dynamics (or Zero Dynamics), which is determined by the input filter of the power module. In this paper, a special Lyapunov analysis is conducted to address the nonlinear internal dynamics of SM controlled power modules with CPL. It takes advantage of a Liérnad-type description, establishing stability conditions and providing a secure operation region. These conditions are translated into conductance and invariant region diagrams, turning them into tools for the design of power module filters.

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Section: Introductionmentioning

confidence: 99%

Stability Criteria for Input Filter Design in Converters with CPL: Applications in Sliding Mode Controlled Power Systems

2019

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“…For example, the centralized control requires high initial cost and needs a widespread scheming; however, it provides better efficiency. In the meantime, the centralized network can be implemented step by step from the bottom levels to the top levels [13].…”

Section: Introductionmentioning

confidence: 99%

“…In [13], the authors examined two implemented microgrid topologies, one centralized and one distributed model, which combine solar panels and batteries for 20 residential houses. In [14], the authors provided an optimal solution for dispatching of the local resources in the medium voltage (MV) microgrids that temporary or permanently operate in islanded mode.…”

Section: Introductionmentioning

confidence: 99%

Implementation of a Real-Time Microgrid Simulation Platform Based on Centralized and Distributed Management

et al. 2017

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Demand response and distributed generation are key components of power systems. Several challenges are raised at both technical and business model levels for integration of those resources in smart grids and microgrids. The implementation of a distribution network as a test bed can be difficult and not cost-effective; using computational modeling is not sufficient for producing realistic results. Real-time simulation allows us to validate the business model's impact at the technical level. This paper comprises a platform supporting the real-time simulation of a microgrid connected to a larger distribution network. The implemented platform allows us to use both centralized and distributed energy resource management. Using an optimization model for the energy resource operation, a virtual power player manages all the available resources. Then, the simulation platform allows us to technically validate the actual implementation of the requested demand reduction in the scope of demand response programs. The case study has 33 buses, 220 consumers, and 68 distributed generators. It demonstrates the impact of demand response events, also performing resource management in the presence of an energy shortage.

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“…Nevertheless there are few studies that compare solar PVHS and CPVS for rural electrification. For instance, reference [4] describes a CPVS approach as the best option for a particular off-grid application, but it requires extended planning and high initial investments, whereas the PVHS approach can be gradually built bottom-up. Reference [5] studies the economic viability of the implementation of a CPVS in villages with a large number of dwellings, densely populated and located on flat terrains.…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic Design of a Stand-Alone Photovoltaic System for a Rural Community in the Ecuadorian Amazon

2017

International Journal of Research Studies in Electrical and Ele

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Providing universal access to electricity is a worldwide priority. Renewable Energy Sources (RES) play an important role in the supply of energy to remote areas, where grid electricity is not feasible or the cost of the grid extension is large. Photovoltaic Home Systems (PVHS) are typically used to provide electricity to the dwellings in off-grid rural communities. However, Centralized Photovoltaic Systems(CPVS) with their own Distribution Network (DN) is also being considered as an alternative for rural electrification. This paper analyzes these two options of electrical supply to provide energy to the rural community Yuwints in the Amazon region of Ecuador. The most suitable system is selected after a comparison of the Net Present Cost (NPC) of various renewable systems, e.g.PV-battery systems, Wind-battery systems, PV-Wind-battery systems, etc. The techno-economic analysis is carried out through the microgrid optimization Homer Energy software. The result of the present study proposes the CPVS as the best option to provide electrical supply for the community, allowing a full coverage of the load and guaranteeing a secure operation of the system.

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Evaluation of centralized and distributed microgrid topologies and comparison to Open Energy Systems (OES)

Cited by 35 publications

References 4 publications

Stability Criteria for Input Filter Design in Converters with CPL: Applications in Sliding Mode Controlled Power Systems

Stability Criteria for Input Filter Design in Converters with CPL: Applications in Sliding Mode Controlled Power Systems

Implementation of a Real-Time Microgrid Simulation Platform Based on Centralized and Distributed Management

Techno-Economic Design of a Stand-Alone Photovoltaic System for a Rural Community in the Ecuadorian Amazon

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