25 documents found, page 1 of 3
A novel microgrid support management system based on stochastic mixed-integer l...
Gomes, Isaías; Melício, R.; Mendes, VictorThis paper focuses on a support management system for the management and operation planning of a microgrid by the new electricity market agent, the microgrid aggregator. The aggregator performs the management of microturbines, wind and photovoltaic systems, energy storage, electric vehicles, and usage of energy aiming at having the best participation in the market. Nowadays, the electricity market participation...
Wind power with energy storage arbitrage in day-ahead market by a stochastic MI...
Gomes, Isaías; Melício, R.; Mendes, Victor; Pousinho, H. M. I.This paper is about a support information management system for a wind power (WP) producer having an energy storage system (ESS) and participating in a day-ahead electricity market. Energy storage can play not only a leading role in mitigation of the effect of uncertainty faced by a WP producer, but also allow for conversion of wind energy into electric energy to be stored and then released at favourable hours....
Wireless Power Transfer Impact on Data Channel
Baikova, Elena N.; Valtchev, Stanimir S.; Melício, R.; Fernão Pires, V.This paper presents measurement results and analysis of the interference produced by the high-power electromagnetic field in a wireless energy transfer system. Through this analysis it is expected to be possible to evaluate the influence of the strong electromagnetic field on the data transmission channel. The wireless power transfer aimed at electric vehicles battery charging receives a great deal of attention...
Electromagnetic interference impact of wireless power transfer system on data w...
Baikova, Elena N.; Valtchev, Stanimir S.; Melício, R.; Pires, Vítor M.This paper focuses on measurement and analysis of the electromagnetic fields generated by wireless power transfer system and their possible interaction on data transmission channel. To measure the levels of electromagnetic fields and spectrum near the wireless power transfer equipment the measurement system in the frequency range 100 kHz to 3 GHz was used. Due to the advances in technology it becomes feasible t...
Study of the Electromagnetic Interference Generated by Wireless Power Transfer ...
Baikova, E.N.; Valtchev, S.S.; Melício, R.; Krusteva, A.; Pires, V.F.This paper presents a study related with measuring of radio frequency emissions. The purpose is to determine the level of interference generated by wireless power transfer equipment in a specific frequency range, and to compare those levels to the existing standards. The technology of wireless power transfer, especially for electric vehicles batteries charging, is rapidly developing in the recent years. An incr...
Bidding and optimization strategies for wind-PV systems in electricity markets ...
Gomes, I. L. R.; Pousinho, H. M. I.; Melício, R.; Mendes, VictorThe variability in non-dispatchable power generation raises important challenges to the integration of renewable energy sources into the electricity power grid. This paper provides the coordinated trading of wind and photovoltaic energy assisted by a cyber-physical system for supporting management decisions to mitigate risks due to the wind and solar power variability, electricity prices, and financial penaltie...
Classification of new electricity customers based on surveys and smart metering...
Viegas, Joaquim L.; Vieira, Susana M.; Melício, R.; Mendes, Victor; Sousa, João M. C.This paper proposes a process for the classification of new residential electricity customers. The current state of the art is extended by using a combination of smart metering and survey data and by using model-based feature selection for the classification task. Firstly, the normalized representative consumption profiles of the population are derived through the clustering of data from households. Secondly, n...
Blade pitch control malfunction simulation in a wind energy conversion system w...
Seixas, Mafalda; Melício, R.; Mendes, Victor; Couto, C.This paper is on a wind energy conversion system simulation of a transient analysis due to a blade pitch control malfunction. The aim of the transient analysis is the study of the behavior of a back-to-back multiple point clamped five-level full-power converter implemented in a wind energy conversion system equipped with a permanent magnet synchronous generator. An alternate current link connects the system to ...
Bidding decision of wind-thermal GenCo in day-ahead market
Laia, R.; Pousinho, H. M. I.; Melício, R.; Mendes, VictorThis paper deals with the self-scheduling problem of a price-taker having wind and thermal power production and assisted by a cyber-physical system for supporting management decisions in a day-ahead electric energy market. The self-scheduling is regarded as a stochastic mixed-integer linear programming problem. Uncertainties on electricity price and wind power are considered through a set of scenarios. Thermal ...
Bidding strategy of wind-thermal energy producers
Laia, R.; Pousinho, H. M. I.; Melício, R.; Mendes, VictorThis paper presents a stochastic mixed-integer linear programming approach for solving the selfscheduling problem of a price-taker thermal and wind power producer taking part in a pool-based electricity market. Uncertainty on electricity price and wind power is considered through a set of scenarios. Thermal units are modelled by variable costs, start-up costs and technical operating constraints, such as: forbid...