Abstract
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.
Highlights
There has been significant renovation of the electricity network in the last years
Two centralized and decentralized control strategies are used in supervisory control and data acquisition (SCADA) systems to overcome this problem
The server is divided into the central control station, or master terminal unit (MTU) which is the core of the server and processes and collects all the information derived from slave units or field devices, the branches, which are the alarm server and manage the alarms and notifications, the historian server, which is a logic module responsible for the archaization located far from the geographical point of view
Summary
There has been significant renovation of the electricity network in the last years. The increasing limitations in the expansion of the network have been solved via the installation of local power supply units, which allowed for distributed generation (DG) since they were not placed in centralized configurations as in traditional generation systems. Controls, voltage source inverters are compensation, and energy management can be implemented. In these controls, voltage source controlled a centralized and decentralized manner [12]. At the third the power distribution control between the main grid and the MG is set at the point of common coupling. Level, the power distribution control between the main grid and the MG is set at the point of common. Since energy management in an MG requires a large amount of data for long distances, this increase the length of the communication channel and reduce the reliability of data transmission. Will increase the length of the communication channel and reduce the reliability of data transmission For this reason, two centralized and decentralized control strategies are used in supervisory control.
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