scholarly journals A Nearly Zero-Energy Microgrid Testbed Laboratory: Centralized Control Strategy Based on SCADA System

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 2106 ◽  
Author(s):  
Mostafa Kermani ◽  
Domenico Luca Carnì ◽  
Sara Rotondo ◽  
Aurelio Paolillo ◽  
Francesco Manzo ◽  
...  
Keyword(s):  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Energy Management System ◽  
Centralized Control ◽  
Zero Energy ◽  
Scada System ◽  
Scada Systems ◽  
University Of Rome ◽  
Active Distribution Networks

Currently, despite the use of renewable energy sources (RESs), distribution networks are facing problems, such as complexity and low productivity. Emerging microgrids (MGs) with RESs based on supervisory control and data acquisition (SCADA) are an effective solution to control, manage, and finally deal with these challenges. The development and success of MGs is highly dependent on the use of power electronic interfaces. The use of these interfaces is directly related to the progress of SCADA systems and communication infrastructures. The use of SCADA systems for the control and operation of MGs and active distribution networks promotes productivity and efficiency. This paper presents a real MG case study called the LAMBDA MG testbed laboratory, which has been implemented in the electrical department of the Sapienza University of Rome with a centralized energy management system (CEMS). The real-time results of the SCADA system show that a CEMS can create proper energy balance in a LAMBDA MG testbed and, consequently, minimize the exchange power of the LAMBDA MG and main grid.

scholarly journals Experimental Assessment of a Centralised Controller for High-RES Active Distribution Networks

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3364 ◽  
Author(s):  
Francisco García-López ◽  
Manuel Barragán-Villarejo ◽  
Alejandro Marano-Marcolini ◽  
José Maza-Ortega ◽  
José Martínez-Ramos
Keyword(s):  
Renewable Energy ◽  
Distribution System ◽  
Reactive Power ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Energy Sources ◽  
Renewable Energy Resources ◽  
Real Time Control ◽  
Control Actions ◽  
Active Distribution Networks

This paper assesses the behaviour of active distribution networks with high penetration of renewable energy sources when the control is performed in a centralised manner. The control assets are the on-load tap changers of transformers at the primary substation, the reactive power injections of the renewable energy sources, and the active and reactive power exchanged between adjacent feeders when they are interconnected through a DC link. A scaled-down distribution network is used as the testbed to emulate the behaviour of an active distribution system with massive penetration of renewable energy resources. The laboratory testbed involves hardware devices, real-time control, and communication infrastructure. Several key performance indices are adopted to assess the effects of the different control actions on the system’s operation. The experimental results demonstrate that the combination of control actions enables the optimal integration of a massive penetration of renewable energy.

scholarly journals Sustainable Urban Regeneration through Densification Strategies: The Kallithea District in Athens as a Pilot Case Study

2020 ◽  
Vol 12 (22) ◽  
pp. 9462
Author(s):  
Annarita Ferrante ◽  
Anastasia Fotopoulou ◽  
Cecilia Mazzoli
Keyword(s):  
Seismic Vulnerability ◽  
Renewable Energy Sources ◽  
Construction Sector ◽  
Existing Buildings ◽  
Zero Energy ◽  
Building Stock ◽  
Existing Building ◽  
Innovative Methods ◽  
European Policies

The current main issue in the construction sector in Europe concerns the energy refurbishment and the reactivation of investments in existing buildings. Guidance for enhancing energy efficiency and encouraging member states to create a market for deep renovation is provided by a number of European policies. Innovative methods and strategies are required to attract and involve citizens and main stakeholders to undertake buildings’ renovation processes, which actually account for just 1% of the total building stock. This contribution proposes technical and financial solutions for the promotion of energy efficient, safe, and attractive retrofit interventions based on the creation of volumetric additions combined with renewable energy sources. This paper focuses on the urban reality of Athens as being an important example of a degraded urban center with a heavy heat island, a quite important heating demand, and a strong seismic vulnerability. The design solutions presented here demonstrate that the strategy of additions, because of the consequent increased value of the buildings, could represent an effective densification policy for the renovation of existing urban settings. Hence, the aim is to trigger regulatory and market reforms with the aim to boost the revolution towards nearly zero energy buildings for the existing building stocks.

Interaction of New Physical-Energy Quantification of Buildings and Renewable Energy Sources as a Dominant Production Technology of Natural Capital

2014 ◽  
Vol 899 ◽  
pp. 46-51
Author(s):  
Milan Bielek ◽  
Boris Bielek ◽  
Juraj Híreš
Keyword(s):  
Renewable Energy ◽  
Energy Balance ◽  
Production Technology ◽  
Natural Capital ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Energy Sources ◽  
Sustainable Society ◽  
Zero Energy ◽  
Sustainable Building

Transition to a sustainable society. Transforming of the energy market. The social value of CO2 emissions. Development of technology in architecture for a sustainable society. Change of the value system in society. The dominant production technology of the capital of nature with simultaneous ecosystem restoring. Renewable energy sources of predictable and unpredictable type. Renewable energy sources as a conditioning factor of fundamental concept changes of energy quantification of buildings. Requirements for physical quantification of buildings with a zero energy balance in relation to energy distribution networks. Green buildings with zero heat balance of the network - buildings with nearly zero energy balance of the network. Sustainable buildings with zero energy balance of the network. Sustainable building with an active energy balance in relation to distribution networks.

New Physical-Energy Quantification of Buildings in the Development of the Technology in Architecture for a Sustainable Society

2013 ◽  
Vol 855 ◽  
pp. 35-38
Author(s):  
Milan Bielek ◽  
Boris Bielek ◽  
Juraj Híreš
Keyword(s):  
Energy Balance ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Green Buildings ◽  
Low Energy ◽  
Sustainable Society ◽  
Zero Energy ◽  
Sustainable Building ◽  
Physical Energy ◽  
Low Energy Buildings

Renewable energy sources as a conditioning factor of fundamental concept changes of energy quantification of buildings. 1st generation of low energy buildings. 2nd generation of low energy buildings. Green buildings with zero heat balance of the network - buildings with nearly zero energy balance of the network. Sustainable buildings with zero energy balance of the network. Sustainable building with an active energy balance in relation to distribution networks.

scholarly journals Centralized Control of Distribution Networks with High Penetration of Renewable Energies

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4283
Author(s):  
Francisco J. Zarco-Soto ◽  
Pedro J. Zarco-Periñán ◽  
Jose L. Martínez-Ramos
Keyword(s):  
Distributed Generation ◽  
Electric Vehicles ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Congestion Management ◽  
Renewable Energies ◽  
Centralized Control ◽  
High Penetration ◽  
Domestic Use ◽  
The Impact

Distribution networks were conceived to distribute the energy received from transmission and subtransmission to supply passive loads. This approach, however, is not valid anymore due to the presence of distributed generation, which is mainly based on renewable energies, and the increased number of plug-in electric vehicles that are connected at this voltage level for domestic use. In this paper the ongoing transition that distribution networks face is addressed. Whereas distributed renewable energy sources increase nodal voltages, electric vehicles result in demand surges higher than the load predictions considered when planning these networks, leading to congestion in distribution lines and transformers. Additionally, centralized control techniques are analyzed to reduce the impact of distributed generation and electric vehicles and increase their effective integration. A classification of the different methodologies applied to the problems of voltage control and congestion management is presented.

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