scholarly journals Matching Characteristic Research of Building Renewable Energy System Based on Virtual Energy Storage of Air Conditioning Load

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1269
Author(s):  
Yongzhen Wang ◽  
Congchuan Hu ◽  
Boyuan Wu ◽  
Jing Zhang ◽  
Zhenning Zi ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Air Conditioning ◽  
Storage System ◽  
Energy System ◽  
Storage Device ◽  
Storage Battery ◽  
Energy Fraction ◽  
Site Energy ◽  
Renewable Energy System

Considering the huge power consumption, rapid response and the short-term heat reserving capacity of the air conditioning load in the building’s energy system, the air conditioning load and its system can be equivalent to the virtual energy storage device for the power grid. Therefore, to obtain a high matching building renewable energy system, a virtual energy storage system of the air conditioning load, accompanied by a storage battery, was built in the paper. Then, operating strategies for the virtual energy storage of the air conditioning load and storage battery were designed. Further, to quantize the contribution of the virtual energy storage to the improvement of matching characteristics, two indicators of the demand side and supply side in the energy system were adopted, including on-site energy fraction (OEFr) and on-site energy matching (OEMr). Lastly, matching characteristic research of the building’s renewable energy system based on virtual energy storage of the air conditioning load was established and analyzed by TRNSYS and MATLAB in Tianjin, China. The results revealed that a better matching characteristic performance of the building’s renewable energy systems driven by virtual energy storage was obtained. In the condition set out in the paper, compared with that without virtual energy storage, the average values of OEFr and OEMr after virtual energy storage were 0.66 and 0.77, which increased by 8.19% and 8.45% respectively. Simultaneously, the battery operation performance in the building renewable system was improved when the virtual energy storage was working. The times of charge and discharge cycles decreased after virtual energy storage, and the depth of discharge of the battery reduced by 23.37% on a specific day.

Coordinated Control of Energy Storage System and Diesel Generator in Isolated Power System

2011 ◽  
Vol 12 (1) ◽  
Author(s):  
Tomonori Goya ◽  
Kosuke Uchida ◽  
Yoshihisa Kinjyo ◽  
Tomonobu Senjyu ◽  
Atsushi Yona ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Control System ◽  
Energy Storage ◽  
Storage System ◽  
Coordinated Control ◽  
Energy System ◽  
Energy Storage System ◽  
Diesel Generator ◽  
Battery System ◽  
Renewable Energy System

Nowadays, renewable energy systems such as wind turbine generators and photovoltaic systems are introduced to power systems. However, the renewable energy system is influenced by weather conditions, and the generated power of the renewable energy system is deviated. For the provision of deviated power, the battery energy storage system is introduced to suppress the deviation of the frequency and voltage in power system. However, it needs the large capacity of a battery system, which increases the capital cost. In this paper, we propose a coordinated control strategy between the diesel generator and the battery system to reduce the capital cost of battery, inverter capacity and storage capacity. The proposed control system incorporates the H-infinity control theory, which enables intuitive controller design in frequency domain. Effectiveness of the proposed control system is validated by simulation results.

scholarly journals 100% Renewable Energy Grid for Rural Electrification of Remote Areas: A Case Study in Jordan

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4908
Author(s):  
Loiy Al-Ghussain ◽  
Mohammad Abujubbeh ◽  
Adnan Darwish Ahmad ◽  
Ahmad M. Abubaker ◽  
Onur Taylan ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Storage System ◽  
Energy System ◽  
Energy Storage System ◽  
High Energy ◽  
Levelized Cost Of Electricity ◽  
Hybrid Renewable Energy System ◽  
Renewable Energy System

Many developing countries suffer from high energy-import dependency and inadequate electrification of rural areas, which aggravates the poverty problem. In this work, Al-Tafilah in Jordan was considered as a case study, where the technical, economic, and environmental benefits of a decentralized hybrid renewable energy system that can match 100% of the city demand were investigated. A tri-hybrid system of wind, solar, and hydropower was integrated with an energy storage system and optimized to maximize the match between the energy demand and production profiles. The optimization aimed at maximizing the renewable energy system (RES) fraction while keeping the levelized cost of electricity (LCOE) equal to the electricity purchase tariff. The techno-economic analysis showed that the optimal system in Al-Tafilah comprises a 28 MW wind system, 75.4 MW PV, and 1 MW hydropower, with a 259 MWh energy storage system, for which a RES fraction of 99% can be achieved, and 47,160 MtCO2 are avoided yearly. This study can be easily extended to other rural cities in Jordan, as they have higher renewable energy system (RES) potential. The presented findings are essential not only for Jordan’s planning and economy-boosting but also for contributing to the ongoing force against climate change.

scholarly journals Aerostatic Way of Harvesting High Altitude Wind Energy

2019 ◽  
Vol 8 (4) ◽  
pp. 7840-7844
Keyword(s):  
Energy Source ◽  
Renewable Energy ◽  
Wind Energy ◽  
Electrical Power ◽  
Energy System ◽  
Maximum Energy ◽  
Storage Device ◽  
Renewable Energy System ◽  
Important Field ◽  
Grid Storage

Renewable energy system in electrical power generation is one of important field of electrical engineering due to its source is natural, reusable and environmental pollution free and cost free. There are renewable energies such as wind, solar and so on. The wind is a free, clean, and inexhaustible energy source. It has served mankind well for many centuries by propelling ships and driving wind turbines to pump water. It has become one of the most attractive energy system in several decades due to rich availability. The important proposed contribution in this work is to enhance the efficiency of renewable energy using AEROSTATIC WAY OF HARVESTING WIND ENERGY that allows turbines to capture as much as possible wind by increase in the altitude at which is the turbine is placed. Which is done by attaching the turbine to aerostat and the aim of the study is to extract maximum energy of the turbine and transmit it to grid, storage device with suitable converters and controllers.

scholarly journals An extensive review of energy storage system for the residential renewable energy system

2020 ◽  
Vol 18 (1) ◽  
pp. 242
Author(s):  
M. S. A. Mustaza ◽  
M. A. M. Ariff ◽  
Sofia Najwa Ramli
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Power System ◽  
Storage System ◽  
Energy Condition ◽  
Energy System ◽  
Energy Storage System ◽  
Energy Utilization ◽  
Constant Current ◽  
Battery Management System

Energy storage system (ESS) plays a prominent role in renewable energy (RE) to overcome the intermittent of RE energy condition and improve energy utilization in the power system. However, ESS for residential applications requires specific and different configuration. Hence, this review paper aims to provide information for system builders to decide the best setup configuration of ESS for residential application. In this paper, the aim is to provide an insight into the critical elements of the energy storage technology for residential application. The update on ESS technology, battery chemistry, battery charging, and monitoring system and power inverter technology are reviewed. Then, the operation, the pro, and cons of each variant of these technologies are comprehensively studied. This paper suggested that the ESS for residential ESS requires NMC battery chemistry because it delivers an all-rounded performance as compared to other battery chemistries. The four-stages constant current (FCC) charging technique is recommended because of the fast charging capability and safer than other charging techniques reviewed. Next, the battery management system (BMS) is recommended to adapt in advance machine learning method to estimate the state of charge (SOC), state of health (SOH) and internal temperature (IT) to increase the safety and prolong the lifespan of the batteries. Finally, these recommendations and solutions aimed to improve the utilization of RE energy in power system, especially in residential ESS application and offer the best option that is available on the shelf for the residential ESS application in the future.

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