scholarly journals Research on Energy Storage Optimization for Large-Scale PV Power Stations under Given Long-Distance Delivery Mode

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 27 ◽  
Author(s):  
Yang Yang ◽  
Chong Lian ◽  
Chao Ma ◽  
Yusheng Zhang
Keyword(s):  
Energy Storage ◽  
Large Scale ◽  
Western China ◽  
Delivery Mode ◽  
Power Station ◽  
Long Distance ◽  
Long Distance Transmission ◽  
Power Stations ◽  
Storage Optimization ◽  
Distance Delivery

Western China has good conditions for constructing large-scale photovoltaic (PV) power stations; however, such power plants with large fluctuations and strong randomness suffer from the long-distance power transmission problem, which needs to be solved. For large-scale PV power stations that do not have the conditions for simultaneous hydropower and PV power, this study examined long-distance delivery mode and energy storage optimization. The objective was to realize the long-distance transmission of electrical energy and maximize the economic value of the energy storage and PV power storage. For a large-scale PV power station, the energy storage optimization was modelled under a given long-distance delivery mode, and the economic evaluation system quantified using the net present value (NPV) of the battery was based on the energy dispatch optimization model. By contrast, a lithium battery performance model was developed. Therefore, further analysis of the economics of the energy storage and obtaining the best capacity of the energy storage battery and corresponding replacement cycle considered battery degradation. The case study of Qinghai Gonghe 100 MWp demonstration base PV power station showed that the optimal energy storage capacity was 5 MWh, and the optimal replacement period was 2 years. Therefore, the annual abandoned electricity was reduced by 3.051 × 10 4 MWh compared with no energy storage. The utilization rate of both the PV power station and quality of the delivered electricity were modelled to realize a long-distance transmission to the grid net. This will have an important guiding significance to develop and construct large-scale single PV power stations.

Asia Pacific Super Grid – Solar electricity generation, storage and distribution

Green ◽  
2012 ◽  
Vol 2 (4) ◽  
Author(s):  
Blakers Andrew ◽  
Luther Joachim ◽  
Nadolny Anna
Keyword(s):  
Energy Storage ◽  
Southeast Asia ◽  
Electricity Generation ◽  
Large Scale ◽  
Asia Pacific ◽  
Long Distance ◽  
Long Distance Transmission ◽  
Solar Electricity

AbstractThis paper explores the large scale transmission of solar electricity to Southeast Asia from Australia. Despite the expense and losses incurred in long distance transmission of Australian solar electricity, it appears to be competitive with locally produced solar electricity because of high insolation levels in Australia. Supplementation of locally produced electricity (both from renewable and conventional sources) with power from Australia, together with substantial integrated energy storage, would allow a high solar electricity fraction to be achieved in Southeast Asia.

scholarly journals Effect of Hybrid Power Station Installation in the Operation of Insular Power Systems

Inventions ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 38 ◽  
Author(s):  
Bouzounierakis ◽  
Katsigiannis ◽  
Fiorentzis ◽  
Karapidakis
Keyword(s):  
Energy Storage ◽  
Power Systems ◽  
Power System ◽  
Large Scale ◽  
Storage System ◽  
Power Station ◽  
Hybrid Power ◽  
Load Demand ◽  
Test Operation ◽  
Hourly Data

Greece has a large number of islands that are isolated from the main interconnected Greek power system; however, a majority of them are to be interconnected in the mainland grid over the next decade. A large number of these islands present a significant amount of wind and solar potential. The nature of load demand and renewable production is stochastic; thus, the operation of such isolated power systems can be improved significantly by the installation of a large-scale energy storage system. The role of storage is to compensate for the long and short-term imbalances between power generation and load demand. Pumped hydro storage (PHS) systems represent one of the most mature technologies for large-scale energy storage. However, their advantages have not been proven in practice for cases of medium and small-sized isolated insular systems. Regarding Greece, which contains a large number of isolated insular systems, a PHS system in the island of Ikaria started its test operation in 2019, whereas in Europe only one PHS system operates in El Hierro (Canary Islands). This paper studies the effect of installing a wind-PHS hybrid power station in the operation of the insular power system of Samos, Greece, according to the latest regulatory framework. The implemented analysis uses real hourly data for a whole year, and examines the effects of such an installation considering investors’ and power system operators’ viewpoints. More specifically, the economic viability of this project under different billing scenarios is compared, and its impact on the insular power system operation for various PHS sizes is examined.

scholarly journals Multi-Objective Sizing of Hybrid Energy Storage System for Large-Scale Photovoltaic Power Generation System

2019 ◽  
Vol 11 (19) ◽  
pp. 5441 ◽  
Author(s):  
Chao Ma ◽  
Sen Dong ◽  
Jijian Lian ◽  
Xiulan Pang
Keyword(s):  
Power Generation ◽  
Energy Storage ◽  
Large Scale ◽  
Yellow River ◽  
Storage System ◽  
Weather Conditions ◽  
Energy Storage System ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Power Stations

Hybrid energy storage systems (HESS) are an effective way to improve the output stability for a large-scale photovoltaic (PV) power generation systems. This paper presents a sizing method for HESS-equipped large-scale centralized PV power stations. The method consists of two parts: determining the power capacity by a statistical method considering the effects of multiple weather conditions and calculating the optimal energy capacity by employing a mathematical model. The method fully considers the characteristics of PV output and multiple kinds of energy storage combinations. Additionally, a pre-storage strategy that can further improve stability of output is proposed. All of the above methods were verified through a case study application to an 850 MW centralized PV power station in the upstream of the Yellow river. The optimal hybrid energy storage combination and its optimization results were obtained by this method. The results show that the optimal capacity configuration can significantly improve the stability of PV output and the pre-storage strategy can further improve the target output satisfaction rate by 8.28%.

Analysis of Output Characteristics of Photovoltaic System

2012 ◽  
Vol 512-515 ◽  
pp. 17-22 ◽  
Author(s):  
Xue Li Zhang ◽  
Qi Hui Liu ◽  
Bei Li ◽  
Hui Meng Ma
Keyword(s):  
Energy Storage ◽  
Large Scale ◽  
Storage System ◽  
Photovoltaic System ◽  
Generation System ◽  
Power Station ◽  
Energy Storage Devices ◽  
Photovoltaic Generation ◽  
Photovoltaic Power ◽  
Output Characteristics

The output of photovoltaic generation system is influenced by the factors such as solar radiation, temperature and so on. So the change of photovoltaic generation power is a non-stationary random process that will impact on the grid. In order to promote large-scale photovoltaic generation connected to the grid, we need to configure energy storage devices for photovoltaic power station and in order to coordinate the allocation of photovoltaic system with energy storage system, we requires a thorough understanding of output characteristics of the photovoltaic system. This paper firstly analyzes the influence brought by the large-scale photovoltaic generation system connected to the grid and then introduces the effect factors of photovoltaic output. Based on the history data of the 100 kWp photovoltaic power station and the statistical method, the paper qualitatively and quantitatively analyzes the photovoltaic output performance; finally puts forward the PV output power evaluation index. The conclusions of this study will provide powerful data references for follow-up studies and have practical value.

scholarly journals Economic feasibility of large-scale hydro-solar hybrid power including long distance transmission

2019 ◽  
Vol 2 (4) ◽  
pp. 290-299 ◽  
Author(s):  
Zhenchen Deng ◽  
Jinyu Xiao ◽  
Shikun Zhang ◽  
Yuetao Xie ◽  
Yue Rong ◽  
...  
Keyword(s):  
Large Scale ◽  
Economic Feasibility ◽  
Long Distance ◽  
Hybrid Power ◽  
Long Distance Transmission

Battery Storage of Propulsion-Energy for Locomotives

2014 ◽  
Author(s):  
Michael E. Iden
Keyword(s):  
Energy Storage ◽  
Large Scale ◽  
System Development ◽  
Fuel Efficiency ◽  
Electrical Energy ◽  
The United States ◽  
Battery Storage ◽  
Long Distance ◽  
Battery Energy ◽  
Dynamic Braking

Significant technical, regulatory and media attention has recently been given to the use of electrical storage batteries onboard a line-haul (long-distance) locomotive or “energy storage tender” (coupled adjacent to a locomotive) as a means of improving railroad fuel efficiency and reducing freight locomotive exhaust emissions. The extent to which electrical energy stored onboard could supplement or replace diesel generated power has yet to be quantified or proven. There are significant technical design, maintainability, logistical and safety challenges to making this technology commonplace, especially for over-the-road (line-haul) freight trains. The use of electrical batteries to provide some amount of point-source fuel- and/or emissions-free locomotive power is not a new concept. Recent claims that onboard storage of locomotive propulsion energy is “new locomotive technology” are unfounded. The world’s first all-battery-powered locomotive was built in 1838 only 34 years after the world’s first steam locomotive operated. A total of 126 identifiable locomotives using onboard batteries to store propulsion energy have been built and operated to some extent in the United States (US) since 1920. Almost all were low-power switching locomotives and none are currently in revenue freight service. Two high-horsepower line-haul experimental engineering test locomotives with an experimental battery design and regenerative dynamic braking have been built (in 2004 and 2007) but very little revenue service testing has occurred. This paper reviews propulsion battery-equipped locomotives over the past 95 years in the US, and discusses future options and possibilities including the technical and logistical challenges to such propulsion. Capturing dynamic braking energy (developed by locomotive traction motors during deceleration or downhill operation) could be a source of onboard battery recharging, but will require significant additional locomotive control system development work to achieve practicality. New battery technologies are being developed but none are yet practical for large-scale locomotive applications. Retrofitting of large amounts of onboard battery storage on existing (or even future) diesel-electric locomotives will be limited by onboard space constraints. The development and use of energy storage “tenders” will bring complications to locomotive and train operations to make effective use (if commercialized) practical and safe. This paper is also intended to provide technical background and clarity for various regulatory agencies regarding battery energy storage technologies for future locomotive propulsion.

scholarly journals Game Approach to HDR-TS-PV Hybrid Power System Dispatching

2021 ◽  
Vol 11 (3) ◽  
pp. 914
Author(s):  
Yang Si ◽  
Laijun Chen ◽  
Xuelin Zhang ◽  
Xiaotao Chen ◽  
Tianwen Zheng ◽  
...  
Keyword(s):  
Power System ◽  
Large Scale ◽  
Storage System ◽  
Critical Parameters ◽  
Power Station ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Power Stations ◽  
The Impact ◽  
Gonghe Basin

Hot dry rock (HDR) power stations have the potential to serve as an energy storage system for large-scale photovoltaic (PV) plants. For flexible operation, thermal storage (TS) power stations are required to coordinate with HDR power stations. In this study, a hybrid power system is constructed by combining the HDR, TS, and PV plants. Game theory is then introduced into the optimal dispatch of the hybrid power system. Considering HDR, TS, and PV as players, non-cooperative and cooperative game dispatching models are established and verified by a case in the Gonghe basin of Qinghai. Finally, the stability of the coalitions and the rationality of allocation of the hybrid power system is verified, and the sensitivity of critical parameters is analyzed. The results demonstrate that the overall payoff of the hybrid power system is increased by 10.15%. The payoff of the HDR power station is increased by 16.5%. The TS power station has obtained 50% of the total extra profits. The PV plant reduces the impact on the grid to obtain the priority of grid connection. Based on these results, a theoretical basis can be provided for developing generation systems based on the HDR resources in the Gonghe Basin.

Micro-Grid System Integrated with GSHP

2015 ◽  
Vol 1092-1093 ◽  
pp. 288-291
Author(s):  
Lu Qiu ◽  
Yan Song Li
Keyword(s):  
Power Systems ◽  
Distributed Generation ◽  
Transmission Lines ◽  
Large Scale ◽  
Long Distance ◽  
Long Distance Transmission ◽  
Distributed Power Generation ◽  
Large Scale Network ◽  
Micro Grid ◽  
In The Beginning

In the past few decades, power system has developed into a large-scale network system of centralized electricity generation and long-distance transmission. But in recent years, electrical load has increasing, while the grid has not developed simultaneously, it makes transmission capacity of long-distance transmission lines increase, so as the decline of stability and security of power grid. In order to achieve the goal of not only increasing utilization of renewable energy, but also solving the drawbacks of large-scale power systems, implementing distributed power generation is an effective way. Despite the advantages of distributed generation, there are many problems in itself, for example, the high cost of distributed generation stand-alone access and control difficulties. In addition, distributed generation is a non-controllable source for large grid. Then in the beginning of this century, scholars have proposed the concept of micro-grid.

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