scholarly journals Fuzzy Decision-Based Optimal Energy Dispatch for Integrated Energy Systems With Energy Storage

2021 ◽  
Vol 9 ◽  
Author(s):  
Qiang Gao ◽  
Xiaodi Zhang ◽  
Mixia Yang ◽  
Xianqing Chen ◽  
Hongqing Zhou ◽  
...  
Keyword(s):  
Energy Storage ◽  
Real Time ◽  
Fuzzy Controller ◽  
Storage System ◽  
Minimum Cost ◽  
Energy System ◽  
Storage Device ◽  
Human Society ◽  
The Real ◽  
Integrated Energy System

The integrated energy system is an important strategic direction in the world’s future energy field, which will become the main carrier form of the energy future of human society in the next 30–50 years, directly affecting or even determining the future energy strategy pattern of the world. There are many types of integrated energy system. In the study of optimal dispatching of energy storage, the integrated energy system is modeled according to the energy transmission characteristics of the integrated energy system, which mainly includes the combined cooling, heating and power system and the multi-type energy storage system containing electricity and heat storage. Then, a two-tier optimal scheduling model for an integrated energy system with multiple types of energy storage as the core is established, divided into the day-head scheduling layer and the real-time dispatch layer. At the day-head scheduling layer, an optimization model has been proposed with the minimum cost of the optimization goal and the power network, heating network, cooling network, energy storage operation constraints and carbon constraints as constraints. Then at the real-time dispatch layer, utilize the fuzzy controller to dispatch and control the electric storage system and the thermal storage system. Finally, the verification simulation experiment is carried out in an industrial park. Besides, the energy efficiency, economy and environmental performance before and after the integrated energy system connected to the multi-energy storage device are compared and analyzed, and different scheduling methods are used to compare and prove the advantages of the scheduling method.

scholarly journals Design and Embedded Implementation of a Power Management Controller for Wind-PV-Diesel Microgrid System

2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
M. Boussetta ◽  
S. Motahhir ◽  
R. El Bachtiri ◽  
A. Allouhi ◽  
M. Khanfara ◽  
...  
Keyword(s):  
Real Time ◽  
Energy Management ◽  
Time Management ◽  
Storage System ◽  
Real Data ◽  
Energy System ◽  
Small Scale ◽  
Diesel Generator ◽  
The Real ◽  
Labview Software

This paper presents an implementation of real-time energy management systems (EMS) to maximize the efficiency of the electricity distribution in an isolated hybrid microgrid system (HMGS) containing photovoltaic modules, wind turbine, battery energy storage system, and diesel generator (DG) which is used as a backup source. These systems are making progress worldwide thanks to their respect for the environment. However, hybridization of several sources requires power flow control (PFC). For this reason, in this work, a proper energy management system is developed using LabVIEW software and embedded in a suitable platform for the real-time management of the hybrid energy system. The developed EMS is tested and validated through a small-scale application which accurately represents the case study of an isolated mosque located in a remote area of Morocco. The aim of this paper is to (i) propose a novel modelling method and real-time monitoring interface under the LabVIEW software based on the real data obtained by an optimal sizing previously made using Homer-pro software and (ii) implement the power control system on a low-consumption embedded platform that is the Raspberry-pi3.

The Review on the Topology of Battery-Supercapacitor Hybrid System Applied into the Real-Time Wind Power Suppression

2013 ◽  
Vol 860-863 ◽  
pp. 287-292 ◽  
Author(s):  
Peng Yu ◽  
Guang Lei Li ◽  
Yong Zhang ◽  
Yan Cheng ◽  
Shu Min Sun ◽  
...  
Keyword(s):  
Energy Storage ◽  
Real Time ◽  
Wind Power ◽  
Hybrid System ◽  
Storage System ◽  
Operation Mode ◽  
Energy Storage System ◽  
High Energy ◽  
The Real ◽  
Power Regulation

The energy storage technique is one of the most effective means for the real-time wind power regulation. Firstly, this paper discussed the operation mode of energy storage system for real-time wind power regulation. At the same time, we proposed that the energy storage system applied into the real-time wind power regulation should be of the properties of high power density, high energy density and long cycle life. By analyzing the properties of battery and supercapacitor, we arrive at the conclusion that the battery-supercapacitor hybrid system obtains the enhanced characteristics to meet the performance requirement for energy storage system. In order to achieve the real-time wind power suppression, we carried out a comparative research on the topology of battery-supercapacitor hybrid system. The operation mode of each topology was discussed. From the standpoint of practical engineering, the merits and deficiencies of each topology were explored.

scholarly journals Research on Real-Time Optimized Operation and Dispatching Strategy for Integrated Energy System Based on Error Correction

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2908
Author(s):  
Aidong Zeng ◽  
Sipeng Hao ◽  
Jia Ning ◽  
Qingshan Xu ◽  
Ling Jiang
Keyword(s):  
Error Correction ◽  
Real Time ◽  
Energy Supply ◽  
Energy System ◽  
Time Interval ◽  
Operation Model ◽  
Time Error ◽  
The Real ◽  
Integrated Energy System ◽  
Correction Operation

A real-time error correction operation model for an integrated energy system is proposed in this paper, based on the analysis of the real-time optimized operation structure of an integrated energy system and the characteristics of the system. The model makes real-time corrections to the day-ahead operation strategy of the integrated energy system, to offset forecast errors from the renewable power generation system and multi-energy load system. When unbalanced power occurs in the system due to prediction errors, the model comprehensively considers the total capacity of each energy supply and energy storage equipment, adjustable margin, power climbing speed and adjustment cost, to formulate the droop rate which determines the unbalanced power that each device will undertake at the next time interval, while taking the day-ahead dispatching goals of the system into consideration. The case study shows that the dispatching strategy obtained by the real-time error correction operation model makes the power output change trend of the energy supply equipment consistent with the day-ahead dispatching plan at the next time interval, which ensures the safety, stability and economy of the real-time operation of the integrated energy system.

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.

scholarly journals Energy Management of a Multi-Source Vehicle by λ-Control

2020 ◽  
Vol 10 (18) ◽  
pp. 6541
Author(s):  
Ali Castaings ◽  
Walter Lhomme ◽  
Rochdi Trigui ◽  
Alain Bouscayrol
Keyword(s):  
Energy Storage ◽  
Fuel Cell ◽  
Real Time ◽  
Energy Management ◽  
Management Strategy ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Management Strategy ◽  
The Real ◽  
Hydrogen Consumption

This paper deals with the real-time energy management of a fuel cell/battery/supercapacitors energy storage system for electric vehicles. The association of the battery and the supercapacitors with the fuel cell aims to reduce the hydrogen consumption while limiting the constraints on the fuel cell and the battery. In this paper, a real-time optimization-based energy management strategy by λ-control is proposed. Simulation results on a standard driving cycle show that the hydrogen consumption is reduced by 7% in comparison with a fuel-cell-based electric vehicle without any secondary energy storage source. Moreover, the energy management strategy ensures the system safety while preserving the fuel cell and the battery. Experimental results show that the developed energy management strategy is well-suited for the real-time requirements, applicability, and safety.

scholarly journals Modeling and real time digital simulation of microgrids for campuses Malta and Jordan based on multiple distributed energy resources

2021 ◽  
Vol 21 (2) ◽  
pp. 657
Author(s):  
Sidahmed Khiat ◽  
Abdelkader Chaker ◽  
Lazaros Zacharia ◽  
Ahmed Onen
Keyword(s):  
Energy Storage ◽  
Real Time ◽  
Power Flow ◽  
Renewable Energy Sources ◽  
Digital Simulation ◽  
Storage System ◽  
Energy Storage System ◽  
Valuable Insight ◽  
Test Bed ◽  
The Real

<p>This paper presents the modeling and real-time digital simulation of two microgrids: the malta college of arts, science and technology (MCAST) and the german jordan university (GJU). The aim is to provide an overview of future microgrid situation and capabilities with the benefits of integrating renewable energy sources (RES), such as photovoltaic panels, diesel generators and energy storage systems for projects on both campuses. The significance of this work starts with the fact that real measurements were used from the two pilots, obtained by measuring the real physical systems. These measures were used to plan different solutions regarding RES and energy storage system (ESS) topologies and sizes. Also, the demand curves for the real microgrids of MCAST and GJU have been parameterized, which may serve as a test bed for other studies in this area. Based on actual data collected from the two pilots, a real-time digital simulation is performed using an RT-LAB platform. The results obtained by this tool allow the microgrid manager to have a very accurate vision of the facility operation, in terms of power flow and default responses.  Several scenarios are studied, extracting valuable insight for implementing both projects in the future. Eventually, the proposed models would be a blueprint for training and research purposes in the microgrid field.</p>

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