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Survey on microgrids: Unplanned islanding and related inverter control techniques

Llaria, Alvaro; Curea, Octavian; Jiménez, Jaime; … - In: Renewable Energy 36 (2011) 8, pp. 2052-2061

Nowadays, the importance of electrical generation based on renewable energies is increasing, due to its low emissions of greenhouse gases. At the same time, Distributed Generation and Microgrids (MG) are becoming an important research line because of their peculiar characteristics. MGs are...

Persistent link: https://www.econbiz.de/10010805649

A statistical approach for sub-hourly solar radiation reconstruction

Zhang, Xiongwen - In: Renewable Energy 71 (2014) C, pp. 307-314

This paper proposes a computational-statistics based approach for solar radiation reconstruction at sub-hourly intervals. A dimensionless form of stochastic variable, V, which is defined as the difference between the theoretical global solar radiation in clear-sky conditions and the actual solar...

Persistent link: https://www.econbiz.de/10010906476

The impact of large-scale distributed generation on power grid and microgrids

Ai, Qian; Wang, Xiaohong; He, Xing - In: Renewable Energy 62 (2014) C, pp. 417-423

and loads can help in-depth study of the microgrid stability and protection design. …

Persistent link: https://www.econbiz.de/10010806663

Securing critical loads in a PV-based microgrid with a multi-agent system

Pipattanasomporn, Manisa; Feroze, Hassan; Rahman, Saifur - In: Renewable Energy 39 (2012) 1, pp. 166-174

-based microgrid. A case study is presented to demonstrate the agents’ abilities to island the PV-based microgrid in the event of an … external fault, secure critical loads, and resynchronize the microgrid to the main grid after the fault is cleared. Simulation … results indicate that the multi-agent system can isolate and stabilize the PV-based microgrid within half an electrical cycle …

Persistent link: https://www.econbiz.de/10010806807

Dynamic modeling of a hybrid wind/solar/hydro microgrid in EMTP/ATP

Ye, Lin; Sun, Hai Bo; Song, Xu Ri; Li, Li Cheng - In: Renewable Energy 39 (2012) 1, pp. 96-106

Microgrids are LV or MV electric networks which utilize various distributed generators (DG) to serve local loads. In this paper, dynamic models of the main distributed generators including photovoltaic (PV) cell, wind turbine, hydro turbine as well as the equivalent power electronic interfaces,...

Persistent link: https://www.econbiz.de/10010806825

A hybrid method for simultaneous optimization of DG capacity and operational strategy in microgrids considering uncertainty in electricity price forecasting

Moradi, Mohammad H.; Eskandari, Mohsen - In: Renewable Energy 68 (2014) C, pp. 697-714

the appropriate operational strategy for the microgrid. The fuzzy set theory is employed to account for the uncertainties …

Persistent link: https://www.econbiz.de/10010804045

An approach for the integration of renewable distributed generation in hybrid DC/AC microgrids

Karabiber, Abdulkerim; Keles, Cemal; Kaygusuz, Asim; … - In: Renewable Energy 52 (2013) C, pp. 251-259

This paper presents an investigation of a hybrid DC/AC integration paradigm to establish microgrids (MGs) by using a conventional three-phase local power delivery system. This approach adds an additional DC power line to the local power distribution system in order to collect energy generated by...

Persistent link: https://www.econbiz.de/10010804350

Electric grid dependence on the configuration of a small-scale wind and solar power hybrid system

Mikati, M.; Santos, M.; Armenta, C. - In: Renewable Energy 57 (2013) C, pp. 587-593

Results are presented from the modeling of a small-scale distributed power system containing power demands, photovoltaic arrays, small-scale wind turbines and an electric grid connection. Detailed models of the photovoltaic array and the wind turbine are briefly explained in addition to the...

Persistent link: https://www.econbiz.de/10010804618

Optimal planning and design of a renewable energy based supply system for microgrids

Hafez, Omar; Bhattacharya, Kankar - In: Renewable Energy 45 (2012) C, pp. 7-15

. This paper focuses on the optimal design, planning, sizing and operation of a hybrid, renewable energy based microgrid with … including a diesel-only, a fully renewable-based, a diesel-renewable mixed, and an external grid-connected microgrid … is also carried out to determine the break-even economics for a grid-connected microgrid. The well-known energy modeling …

Persistent link: https://www.econbiz.de/10010805069

Aggregate load-frequency control of a wind-hydro autonomous microgrid

Şerban, I.; Marinescu, C. - In: Renewable Energy 36 (2011) 12, pp. 3345-3354

This paper presents an aggregate load-frequency controller for an autonomous microgrid (MG) with wind and hydro …

Persistent link: https://www.econbiz.de/10011044713