scholarly journals Dynamic Performance Enhancement of Power Grids by Operating Solar Photovoltaic (PV) System as Supercapacitor Energy Storage

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4277
Author(s):  
Morteza Daviran Keshavarzi ◽  
Mohd Hasan Ali

Energy storage devices are collocated with conventional solar photovoltaic (PV) systems to tackle the intermittency of solar irradiance and maintain the power quality of supplied energy. The energy storage system usually has its own conversion devices that may incur an extra capital cost of installation. This paper proposes an integrated and cost-effective photovoltaic-supercapacitor (PVSC) system in which the energy storage functionality of the supercapacitor (SC) is merged into the PV array where the power flow bidirectionally takes place to maintain the system stability under grid disturbances during the daytime, nighttime, and cloudy weather. A nonlinear mathematical model (NMM) was developed to conduct the stability analyses and to design the controller parameters, which facilitates a faster and more accurate numerical analysis compared to existing average models. The effectiveness of the proposed system was evaluated by simulation analysis and compared to that of the basic PV and a conventional SC system in which full energy storage is connected in parallel with the PV. The results demonstrate that the proposed PVSC system is effective in improving the dynamic performance of the connected power grid system. In addition, the proposed PVSC system fulfills the functionality of the conventional SC with merged conversion devices; that is, the performance of the proposed PVSC system is comparable to the conventional SC system.

2021 ◽  
Vol 2089 (1) ◽  
pp. 012041
Author(s):  
Jarapala Ramesh Babu ◽  
Manas Ranjan Nayak ◽  
B. Mangu

Abstract Due to the rapid increase of environmental pollution caused by automobiles. To decrease pollution and to save our resources, there is an alternator to use an electric vehicle instead of a gasoline engine. The main drawback of a gasoline engine of compared to the electric vehicle can polluter noise efficiency durability. When it comes to durability, efficiency, and acceleration capabilities of electric vehicles, they are more impressive. The electric vehicles involve HEVs and BEVs. Generally, ultra-capacitor, solar Photovoltaic (PV) system, batters, regenerative braking systems and flywheel are utilized in HEVs as energy storage devices. All energy storage devices are linked to this distinct dc-dc converter scheme for raising input sources’ voltage. In past few decades, most HEVs have incorporated multi-input converters in order to enhance their reliability and efficiency. There are several distinct multi-input dc-dc converter schemas utilized in HEVs. This research discusses their current and future trends as well as energy storage devices.


2020 ◽  
Vol 38 (5) ◽  
pp. 1932-1945 ◽  
Author(s):  
Marwa Ben Slimene ◽  
Mohamed Arbi Khlifi

The electricity production via these sources of energy, offers a bigger safety of supply to the consumers while respecting the environment. For that reason, the principal objective of this paper is to study and control the photovoltaic lighting energy storage system. We presented the study of the whole PV system such as solar panels, DC chopper, batteries with account of all conditions of the sites of installation (period of sunshine and temperature). This study analyzed the integration of a photovoltaic power plant, super capacitor energy storage system, and lightning system. Our approach of sizing is based on the modeling of various components describing the functioning of every part of the installation among others. We can mention the production, the consumption and the storage of energy through solar battery.


2013 ◽  
Vol 848 ◽  
pp. 172-177
Author(s):  
Huai De Zhang ◽  
Bei Li ◽  
Jian Sheng Zhang

Based on the advantage of battery energy storage system (BESS), which can work in four quadrants, it is proposed to utilize BESS to suppress low-frequency oscillation. Derive the model with BESS and make the simulation by using the Matlab. Simulation results show energy storage devices can effectively improve the system stability and increase the system damping when they are installed in the appropriate position.


2014 ◽  
Vol 529 ◽  
pp. 519-523
Author(s):  
Zhong Ce Wang

Super capacitor and batteries are designed based on the power converter. A control strategy of single zero-pole with variable gain is proposed in order to eliminate the affect of changes of super capacitor voltage on the system. It controls the discharge current of battery directly to let the current constant. Through the analysis the bode diagram of Open-loop system, stability and dynamic performance of the control system was demonstrate. Simulation result shows that the parallel control system can effectively optimize the battery discharge process and achieve complementary of the advantages two energy storage components.


2021 ◽  
Vol 12 (4) ◽  
pp. 205
Author(s):  
Zexin Yang ◽  
Xueliang Huang ◽  
Shan Gao ◽  
Qi Zhao ◽  
Hongen Ding ◽  
...  

In recent years, the orderly charging of electric vehicles (EVs) in commercial parking has become a meaningful research topic due to the increasing number of EVs, especially for parking lots close to workplaces and serving fixed users. In this paper, a parking lot energy management system integrated with energy storage system (ESS) and photovoltaic (PV) system is established. The concept of energy price tag (EPT) is introduced to define the price of all energy storage devices, and the priority order between PV, ESS, EVs, and power grid is established. Taking the minimization of charging cost as the optimization objective, the charging plans of ESS, EVs, and buildings are optimized considering the constraints of EVs user demand and PV power. By comparing the simulation results of four cases, it is proven that this strategy can reduce the charging cost and improve the consumption rate of PV.


2011 ◽  
Vol 383-390 ◽  
pp. 2513-2517
Author(s):  
Hong Hai Kuang ◽  
Zheng Qiu Wu ◽  
Xiao Ning He

With people attaching importance to sustainable development and reducing environmental pollution, distributed generation technology is attracting more and more and more attention due to its unique environmental protection and economy. However, distributed generation will change with natural conditions so that it can not output power constantly and steadily, and most DGs are connected to the power system at distribution network side, this will cause system stability problem. In order to fully play the role of distributed power and avoid the adverse effects of its existence, a power conversion sand energy storage system to effectively regulate the system stability of distributed generation connected to the grid is presented. MATLAB/Simulink is used as a simulation and study tool in this paper, a system model of distributed generation connected to the grid is built and combined with actual operation in different environments to conduct real-time simulation analysis, the simulation results show that the power conversion system can enhance system stability of distributed generation connected to the grid.


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