scholarly journals Standalone direct pumping photovoltaic system or energy storage in batteries for supplying irrigation networks. Cost analysis

2019 ◽  
Vol 673 ◽  
pp. 821-830 ◽  
Author(s):  
Miguel Ángel Pardo ◽  
J. Manzano ◽  
J. Valdes-Abellan ◽  
R. Cobacho
Keyword(s):  
Energy Storage ◽  
Cost Analysis ◽  
Photovoltaic System ◽  
Irrigation Networks

scholarly journals Fuzzy control in H-Bridge MLI for solar photovoltaic system to enhance load sharing

2018 ◽  
Vol 57 (1) ◽  
pp. 64-72 ◽  
Author(s):  
T Yuvaraja ◽  
KA Ramesh Kumar
Keyword(s):  
Energy Storage ◽  
Large Scale ◽  
Storage Systems ◽  
Load Sharing ◽  
Electric Power System ◽  
Photovoltaic System ◽  
Battery Energy Storage ◽  
Battery Energy Storage Systems ◽  
Solar Photovoltaic System ◽  
Battery Energy

The electric power system is undergoing important changes and updates nowadays, particularly on a generation and transmission level. Initially, the move towards a distributed generation in distinction to the present centralized one implies a major assimilation of energy from undeleted supply and electricity storage systems. Advanced power physics interfacing systems are expected to play a key role within the development of such modern governable and economical large-scale grids and associated infrastructures. Throughout the last era, a worldwide analysis and development interest has been impressed within the field of segmental structure conversion; thanks to the well-known offered blessings over typical solutions within the medium and high voltage and power range. Within the context of battery energy storage systems, the segmental structure conversion device family exhibits a further attraction, i.e., the aptitude of embedding such storage parts in an exceedingly split manner, given the existence of many submodules operative at considerably lower voltages. This study deals with many technical challenges related to segmental structure converters and their development with battery energy storage parts to boost load sharing system.

scholarly journals A Grid-Supporting Photovoltaic System Implemented by a VSG with Energy Storage

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3152 ◽  
Author(s):  
Huadian Xu ◽  
Jianhui Su ◽  
Ning Liu ◽  
Yong Shi
Keyword(s):  
Energy Storage ◽  
Synchronous Generator ◽  
Photovoltaic System ◽  
Voltage Source ◽  
Frequency Regulation ◽  
Pv System ◽  
Storage Unit ◽  
Support Functions ◽  
Energy Storage Unit ◽  
Pv Systems

Conventional photovoltaic (PV) systems interfaced by grid-connected inverters fail to support the grid and participate in frequency regulation. Furthermore, reduced system inertia as a result of the integration of conventional PV systems may lead to an increased frequency deviation of the grid for contingencies. In this paper, a grid-supporting PV system, which can provide inertia and participate in frequency regulation through virtual synchronous generator (VSG) technology and an energy storage unit, is proposed. The function of supporting the grid is implemented in a practical PV system through using the presented control scheme and topology. Compared with the conventional PV system, the grid-supporting PV system, behaving as an inertial voltage source like synchronous generators, has the capability of participating in frequency regulation and providing inertia. Moreover, the proposed PV system can mitigate autonomously the power imbalance between generation and consumption, filter the PV power, and operate without the phase-locked loop after initial synchronization. Performance analysis is conducted and the stability constraint is theoretically formulated. The novel PV system is validated on a modified CIGRE benchmark under different cases, being compared with the conventional PV system. The verifications demonstrate the grid support functions of the proposed PV system.

scholarly journals Energy Consumption Optimization in Irrigation Networks Supplied by a Standalone Direct Pumping Photovoltaic System

2018 ◽  
Author(s):  
M. A. Pardo ◽  
Juan Manzano ◽  
Diego García
Keyword(s):  
Energy Consumption ◽  
Photovoltaic System ◽  
Solar Panels ◽  
Available Energy ◽  
Water Demands ◽  
Irrigation Networks ◽  
Energy Consumption Optimization ◽  
Programming Software ◽  
Schedule Type

Due to the fact that irrigation networks are water and energy-hungry and that both resources are scarce, many strategies have been developed to reduce this consumption. Otherwise, solar energy sources have become a green alternative with lower energy costs and, as a consequence, lower environmental impacts. In this work, it is proposed a new methodology to select the scheduled program for irrigation which minimizes the number of photovoltaic solar panels to be installed and which better fits energy consumption (calculated for discrete potential combinations; using a programming software to assist) to available energy obtained by panels without any power conditioning unit. So, the irrigation hours available to satisfy the water demands are limited by sunlight, the schedule type of irrigation has to be rigid (rotation predetermined) and the pressure at any node has to be above the minimum pressure required by standards. A real case study has been performed.

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