Experimentation on a Hydraulic Energy Storage System for Mid-Size Wind Turbines

2021 ◽  
Author(s):  
Eric Mohr ◽  
Biswaranjan Mohanty ◽  
Daniel Escobar-Naranjo ◽  
Kim A. Stelson
Keyword(s):  
Energy Storage ◽  
Hybrid System ◽  
Wind Turbines ◽  
Storage System ◽  
Energy Resource ◽  
Energy Storage System ◽  
Strong Wind ◽  
Ancillary Benefits ◽  
Test Platform ◽  
Simulation Results

Abstract Renewable energy resource investment is crucial to mitigating the effects of climate change. One underrecognized method is improving the performance of mid-sized wind turbines. A hydraulic Energy Storage System (ESS) can be added to a midsized wind turbine transmission to improve system reliability and produce more energy. This hybrid system also offers potential ancillary benefits, such as fault ride-through and strong wind pitch and yaw control. In this paper, results of recent improvements on our previously proposed hybrid system are presented. These improvements include a more realistic accumulator model to improve simulation fidelity and the addition of a hydraulic energy storage system to the power regenerative test platform at the University of Minnesota for experimental validation. Losses of the test platform are characterized and used to improve the quality of the simulation results. Wind samples are used to experimentally validate simulation results. The updated simulation is used to create a refined prediction of the benefits of the hybrid system for a 60 kW turbine.

Optimal Market-based Operation of Microgrid with the Integration of Wind Turbines, Energy Storage System and Demand Response Resources

Energy ◽  
2021 ◽  
pp. 122156
Author(s):  
Mohammad MansourLakouraj ◽  
Majid Shahabi ◽  
Miadreza Shafie-khah ◽  
João P.S. Catalão
Keyword(s):  
Energy Storage ◽  
Wind Turbines ◽  
Demand Response ◽  
Storage System ◽  
Energy Storage System

scholarly journals Energy Storage System Integration with Wind Generation for Primary Frequency Support in the Distribution Grid

2020 ◽  
Author(s):  
Rodrigo Zambrana Vargas ◽  
José Calixto Lopes ◽  
Juan C. Colque ◽  
José L. Azcue ◽  
Thales Sousa
Keyword(s):  
Energy Storage ◽  
Wind Turbines ◽  
Distribution System ◽  
System Integration ◽  
Storage System ◽  
Energy Storage System ◽  
Distribution Grid ◽  
Synchronous Generators ◽  
Battery Energy ◽  
Primary Frequency

With the significant increase in the insertion of wind turbines in the electrical system, the overall inertia of the system is reduced resulting in a loss of its ability to support frequency. This is because it is common to use variable speed wind turbines, based on the Double Fed Induction Generator (DFIG), which are coupled to the power grid through electronic converters, which do not have the same characteristics as synchronous generators. Thus, this paper proposes the use of the DFIG-associated Battery Energy Storage System (BESS) to support the primary frequency. A control strategy was developed, and important factors such as charging and discharging current limitations and operation within battery limits were considered. Time domain simulations have been proposed to study a distribution system containing a wind turbine, showing the advantages of BESS over frequency disturbances.

scholarly journals Thermodynamic Analysis of a Hybrid Trigenerative Compressed Air Energy Storage System with Solar Thermal Energy

Entropy ◽  
2020 ◽  
Vol 22 (7) ◽  
pp. 764
Author(s):  
Xiaotao Chen ◽  
Xiaodai Xue ◽  
Yang Si ◽  
Chengkui Liu ◽  
Laijun Chen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Demand ◽  
High Efficiency ◽  
Storage System ◽  
Energy Resource ◽  
Energy Storage System ◽  
Compressed Air ◽  
Critical Parameters ◽  
Compressed Air Energy Storage ◽  
Solar Thermal Energy

The comprehensive utilization technology of combined cooling, heating and power (CCHP) systems is the leading edge of renewable and sustainable energy research. In this paper, we propose a novel CCHP system based on a hybrid trigenerative compressed air energy storage system (HT-CAES), which can meet various forms of energy demand. A comprehensive thermodynamic model of the HT-CAES has been carried out, and a thermodynamic performance analysis with energy and exergy methods has been done. Furthermore, a sensitivity analysis and assessment capacity for CHP is investigated by the critical parameters effected on the performance of the HT-CAES. The results indicate that round-trip efficiency, electricity storage efficiency, and exergy efficiency can reach 73%, 53.6%, and 50.6%, respectively. Therefore, the system proposed in this paper has high efficiency and flexibility to jointly supply multiple energy to meet demands, so it has broad prospects in regions with abundant solar energy resource.

scholarly journals Case Study on Boil-Off Gas (BOG) Minimization for LNG Bunkering Vessel Using Energy Storage System (ESS)

2019 ◽  
Vol 7 (5) ◽  
pp. 130 ◽  
Author(s):  
Kyunghwa Kim ◽  
Kido Park ◽  
Gilltae Roh ◽  
Kangwoo Chun
Keyword(s):  
Energy Storage ◽  
Hybrid System ◽  
Storage System ◽  
Energy Storage System ◽  
Ghg Reduction ◽  
Harmful Emissions ◽  
Cargo Capacity ◽  
Loading And Unloading ◽  
Green Solution

Liquefied natural gas (LNG) is recognized as a preferable alternative fuel for ship owners, since it can substantially reduce harmful emissions to comply with stricter environmental regulations. The increasing number of LNG-fueled vessels has driven up the number of LNG bunkering vessels (LNGBVs) as well. A key issue of LNGBVs is boil-off gas (BOG) generation, especially the huge amount of BOG that is generated during loading and unloading (bunkering) processes. This study proposes a hybrid system that combines conventional onboard LNG-fueled generators with an energy storage system (ESS) to solve the BOG issue of LNGBVs. This hybrid system is targeted at an LNGBV with the cargo capacity of 5000 m3. The amount of BOG generation is calculated based on assumed operation modes, and the economic study and the environmental analysis are performed based on the results. By comparing the conventional system to the proposed ones, some benefits can be verified: about 46.2% BOG reduction, 66.0% fuel saving, a 7.6-year payback period, and 4.8 tons of greenhouse gas (GHG) reduction for one voyage in the best case, with some assumptions. This proposed hybrid system using the ESS could be an attractive green solution to LNGBV owners.

Flywheel Energy Storage Systems for Wind Turbine Grid Frequency Stability: A Review

2011 ◽  
Author(s):  
Ilker Durukan ◽  
Stephen Ekwaro-Osire ◽  
Stephen B. Bayne
Keyword(s):  
Energy Storage ◽  
Wind Turbine ◽  
Wind Turbines ◽  
Storage Systems ◽  
Storage System ◽  
Energy Storage System ◽  
Frequency Stability ◽  
Variable Speed ◽  
Flywheel Energy Storage ◽  
Energy Storage Systems

Most recent grid codes require wind turbines to contribute to the recovery of frequency drops in the grid. More of the recently build wind turbines use variable speed generators. Unlike fixed speed generators, these generators do not naturally contribute to the recovery of the frequency drop since the rotor rpm is decoupled from the grid frequency. This decoupling is achieved by controller and power conditioning units. The studies reviewed in this paper focused on the design of such a controller so that the wind turbine could react to frequency drops. Another approach to responding to frequency drops is to connect an energy storage system to the DC bus of variable speed generator. Flywheels have been used as energy storage systems to fill energy gaps in several applications and can be used for frequency recovery application for wind turbines as well. The objective of this study was to demonstrate the improvement of frequency stability of wind turbines connected to electrical grids in the presence of flywheel energy storage systems (FESS). Studies reviewed show that FESS can enhance the power quality and frequency stability of wind turbines connected to an electrical grid.

scholarly journals A 100kW Three-Phase Power Inverter for Hybrid Energy Storage System Based on Batteries and Supercapacitors

2019 ◽  
Vol 8 (6) ◽  
pp. 4571-4574
Keyword(s):  
Energy Storage ◽  
Modular Design ◽  
Reactive Power ◽  
Storage System ◽  
Energy Storage System ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Hybrid Energy Storage System ◽  
Three Phase ◽  
Simulation Results

The paper represents the design of a 100 kW three-phase network inverter for a hybrid energy storage system based on batteries and supercapacitors. The presented design is based on fast IGBT switches, provides their effective cooling and can be performed in a modular design. The inverter is designed for parallel operation with the network in bidirectional mode and island mode. The control algorithm allows for direct control of active and reactive power. The obtained simulation model and simulation results are used to calculate the inverter parameters and debug the control system. Simulation results show good performance and effectiveness of the invertor and the algorithm

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