Experimental validation of smart distribution grids: Development of a microgrid and electric mobility laboratory

Gouveia, Clara; Rua, David; Ribeiro, Franclim R.; Miranda, Luís M.; Rodrigues, Justino; Moreira, Carlos; Lopes, João

doi:10.1016/j.ijepes.2015.12.005

Cited by 29 publications

(14 citation statements)

References 13 publications

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“…Although it is envisaged that many new microgrids will be designed and developed with advanced intelligent controllers and communication links in future [6][7][8], the reality will be more likely to be a gradual progression from existing networks such as shown in the case study here. While only distributed generators are included in the current study, it should be noted that renewable energy sources are likely to be included in a realistic microgrid, which will further increase the interdependence of the sources and loads, and the control complexity of the system [9][10][11].…”

Section: IImentioning

confidence: 99%

Integration of electric vehicles within microgrid

Alkhafaji

Luk

Bati

2016

2016 UKACC 11th International Conference on Control (CONTROL)

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This paper presents an analytical approach to integrate electric vehicles (EVs) into the microgrid in order to enhance its voltage stability. Analytical characterization equations linking the microgrid and the EVs are first developed. Then, based on a practical distribution network and realistic load conditions, case studies are undertaken to show the positive impacts of EV integration. Matpower program is used to formulate and perform the power flow analysis. Eigenvalue, eigenvector and participation factor analysis are used to monitor voltage stability and identify the weakest bus on the system. The results show quantitatively the extent to which the addition of electric vehicles can enhance voltage level and voltage stability of the system under study.

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Section: IImentioning

confidence: 99%

Integration of electric vehicles within microgrid

Alkhafaji

Luk

Bati

2016

2016 UKACC 11th International Conference on Control (CONTROL)

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“…A LV cable emulator with a nominal resistance of 0.3 Ω is used to interconnect nodes 2 and 3. The PQ unit is represented by a 20 kW four quadrant back-toback inverter, remotely controlled in terms of injected or absorbed active power is used to emulate an energy storage device [9].…”

Section: A Descriptionmentioning

confidence: 99%

“…This is a new approach when compared to the secondary control strategies presented in literature [1], [2], [3], [5]. The proposed tool was developed and validated through simulation and experimentally in a MG laboratory setup [9].…”

Section: Introductionmentioning

confidence: 99%

MicroGrid energy balance management for emergency operation

Gouveia

Rodrigues

et al. 2017

2017 IEEE Manchester PowerTech

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A distinctive characteristic of a Microgrid (MG) system is related to the ability of operating autonomously. However, the stability of the system relies in storage and generation availability, providing frequency and voltage regulation. Considering the deployment of distributed storage units in the Low Voltage network and of smart metering infrastructures, this paper presents an online tool for promoting an effective coordination of MG flexible resources in order ensure a secure autonomous operation and maximize the time that the MG is able to operate islanded from the main grid. The tool determines a priori an emergency operation plan for the next hours, based on load and microgeneration forecasting. The limited energy capacity of the distributed storage units participating in MG control is also considered.

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“…In response to the G2V and V2G tasks that the EVs incorporation entails, and with the creation of the communication network connecting all the players, there are new opportunities in terms of distributed storage to help to stabilize the power grid operation [8]. Some of these opportunities are related with distributed energy resources (DER) in microgrids: the collective process of EVs and solar PV panels for the energy generation portfolio is analyzed in [9], a DER with EVs controlled by a collaborative broker is presented in [10], an EV charging on an office building with DER is presented in [11], a smart distribution grid with EVs is experimentally analyzed in [12], and optimized energy management of EVs in microgrids is presented in [13]. In these circumstances are expected EVs prepared to accomplish a bidirectional operation, i.e., consuming or delivering energy from or to the grid (vehicle-to-grid, V2G mode) [14] [15].…”

Section: Introductionmentioning

confidence: 99%

Improved Voltage Control of the Electric Vehicle Operating as UPS in Smart Homes

Monteiro

Catalão

Sousa

et al. 2019

Green Energy and Networking

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As a contribution for sustainability, electric vehicles (EVs) are seen as one of the most effective influences in the transport sector. As complement to the challenges that entails the EVs integration into the grid considering the bidirectional operation (grid-to-vehicle and vehicle-to-grid), there are new concepts associated with the EV operation integrating various benefits for smart homes. In this sense, this paper proposes an improved voltage control of the EV operating as uninterruptible power supply (UPS) in smart homes. With the EV plugged-in into the smart home, it can act as an off-line UPS protecting the electrical appliances from power grid outages. Throughout the paper, the foremost advantages of the proposed voltage control strategy are comprehensively emphasized, establishing a comparison with the classical approach. Aiming to offer a sinusoidal voltage for linear and nonlinear electrical appliances, a pulse-width modulation with a multi-loop control scheme is used. A Kalman filter is used for decreasing significantly the time of detecting power outages and, consequently, the transition for the UPS mode. The experimental validation was executed with a bidirectional charger containing a double stage power conversion (an ac-dc interfacing the grid-side and a dc-dc interfacing the batteries-side) and a digital stage. The computer simulations and the acquired experimental results validate the proposed strategy in different conditions of operation.

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Experimental validation of smart distribution grids: Development of a microgrid and electric mobility laboratory

Cited by 29 publications

References 13 publications

Integration of electric vehicles within microgrid

Integration of electric vehicles within microgrid

MicroGrid energy balance management for emergency operation

Improved Voltage Control of the Electric Vehicle Operating as UPS in Smart Homes

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