Abstract
This paper proposes an effective management system for stand-alone solar photovoltaic (PV) using real-time data with Hybrid Energy Storage System (HESS). The abrupt movement of fleeting clouds often gives rise to PV power output fluctuations which in turn affect the power quality and system stability due to scattered solar radiation reception. These variations can limit through a ramp-limit controller and employing a DC link controller to maintain the stable DC link voltage. The battery is used in the system for continuous power application and the sudden variations in charging and discharging of battery power can create stress on the battery. These sudden changes in a battery will be removed by the super-capacitor (SC) unit and achieves a fast DC link voltage regulation. Hence, the high energy and power density devices such as battery and SC units will deliver more stable power into the system. The control scheme is tested in Matlab/Simulink and validated by Real-Time Hardware-in-Loop (HIL) simulator using periodic one-minute data for one year from the solar PV power plant from real-time.
Highlights
Installations of solar photovoltaic (PV) and wind are steadily increasing due to exhaustion of fossil fuels, its price variation, instability in trading of coal/crude oil, and issues of greenhouse gases [1].Utilizing more renewable energy sources (RES) minimizes the dependency on imported fossil fuels and creates sustainable energy production
The need for high power and energy demand can be achieved by combining battery and SC devices called as Hybrid Energy Storage System (HESS) and it is interfaced with a DC link employing bidirectional converters, which allows power into and from the energy storage system (ESS) devices [4,5]
The machine and the controller are installed in OPAL-RT to run the system at the actual clock time
Summary
Installations of solar photovoltaic (PV) and wind are steadily increasing due to exhaustion of fossil fuels, its price variation, instability in trading of coal/crude oil, and issues of greenhouse gases [1]. The need for high power and energy demand can be achieved by combining battery and SC devices called as HESS and it is interfaced with a DC link employing bidirectional converters, which allows power into and from the ESS devices [4,5]. The importance of these ESSs can perform a significant role in the context of microgrid (μG) systems. The regulation distribution systems, DC μGs are again preferred to AC μG from the point of view of performance, of DC μGs is very simple compared to AC μGs as the power is regulated by the DC bus voltage and reliability, and stability.
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