Counter-Rotating Type Pump-Turbine Unit Stabilizing Momentarily Fluctuating Power From Renewable Energy Resources

2013 ◽  
Author(s):  
Toshiaki Kanemoto ◽  
Risa Kasahara ◽  
Hirotaka Honda ◽  
Toru Miyaji ◽  
Jin-Hyuk Kim
Keyword(s):  
Renewable Energy ◽  
Power Quality ◽  
Turbine Unit ◽  
Energy Resources ◽  
Stabilization System ◽  
Grid System ◽  
Renewable Energy Resources ◽  
Pump Turbine ◽  
Power Stabilization ◽  
Pumped Storage

It is difficult, for renewable energy resources, to provide constant power with excellent quality for the grid system. This serial research proposes a power stabilization system with a pumped storage to guarantee the power quality and capacity, while the energy resources are at unstable and/or fluctuating conditions. The power stabilization system with the counter-rotating type pump-turbine unit was prepared and operated at the pumping and the turbine modes. The experiments have verified that this type pump-turbine unit is reasonably effective to stabilize momentarily/instantaneously the fluctuating power from the renewable energy resources.

scholarly journals Power Stabilization System with Counter-Rotating Type Pump-Turbine Unit for Renewable Energy

2014 ◽  
Vol 02 (04) ◽  
pp. 47-52 ◽  
Author(s):  
Toru Miyaji ◽  
Risa Kasahara ◽  
Toshiaki Kanemoto ◽  
Jin-Hyuk Kim ◽  
Young-Seok Choi ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Turbine Unit ◽  
Stabilization System ◽  
Pump Turbine ◽  
Power Stabilization

Ant Lion Optimizer for Solving Unit Commitment Problem in Smart Grid System

2017 ◽  
Vol 8 (1) ◽  
pp. 129 ◽  
Author(s):  
Izni Nadhirah Sam’on ◽  
Zuhaila Mat Yasin ◽  
Zuhaina Zakaria
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Unit Commitment ◽  
Energy Resources ◽  
Grid System ◽  
Renewable Energy Resources ◽  
Unit Commitment Problem ◽  
Commitment Problem ◽  
Ant Lion ◽  
Smart Grid System

<p>This paper proposed the integration of solar energy resources into the conventional unit commitment. The growing concern about the depletion of fossil fuels increased the awareness on the importance of renewable energy resources, as an alternative energy resources in unit commitment operation. However, the present renewable energy resources is intermitted due to unpredicted photovoltaic output. Therefore, Ant Lion Optimizer (ALO) is proposed to solve unit commitment problem in smart grid system with consideration of uncertainties .ALO is inspired by the hunting appliance of ant lions in natural surroundings. A 10-unit system with the constraints, such as power balance, spinning reserve, generation limit, minimum up and down time constraints are considered to prove the effectiveness of the proposed method. The performance of proposed algorithm are compared with the performance of Dynamic Programming (DP). The results show that the integration of solar energy resources in unit<em> commitment scheduling can improve the total operating cost significantly. </em></p>

scholarly journals A Probe into Reactive Power Management in Renewable Energy System using Facts Devices

2019 ◽  
Vol 8 (12) ◽  
pp. 619-626 ◽  
Keyword(s):  
Renewable Energy ◽  
Power Management ◽  
Power Quality ◽  
Reactive Power ◽  
Energy Resources ◽  
Energy Utilization ◽  
Generation Model ◽  
Power Electronic ◽  
Renewable Energy Resources ◽  
Compensating Devices

In the modern era, most of the utility grid is connected with Renewable Energy resources (RERs). In addition to this, many power electronic converters and reactive power compensating devices are also incorporated into the existing grid. This makes the system complicated. Penetration of renewable energy resources affect many power system parameters like grid stability, quality of power, reactive power balance and Sufficient energy utilization. However, the Distributed Generation (DG) towards the power electronic interface creates some critical power quality events such as reactive power management, harmonics and voltage profile which makes the distributed system become a polluted one. This paper depicts the review of modelling and incorporation of various reactive power compensating devices like TCSC, SVC and STATCOM into RES. Power generation model of solar, wind and fuel farm is discussed in this paper. Reactive power compensating devices and its location and sizing are important for the stable and secure operation of the electric grid. Consequently, power quality issues, real-time interconnection issues and policies related to reactive power management are in this paper.

scholarly journals Performance Analysis of Three-Phase Solar PV Integrated UPQC Using Space Vector Technique

2020 ◽  
pp. 140-148
Keyword(s):  
Renewable Energy ◽  
Reactive Power ◽  
Renewable Energy Sources ◽  
Energy Resources ◽  
Power Electronic ◽  
Grid System ◽  
Solar Pv ◽  
Renewable Energy Resources ◽  
Micro Grid ◽  
Micro Grids

: Due to the increase of load demand in future, the generation must also increase. The use of traditional resources such as coal, diesel fuels etc., causes global warming which is leading us to shift to renewable energy resources. Renewable energy resources may in include solar, wind, tidal as the source for production. These are used in small quantities as Distribution Generators (DG) at different locations in a bus system. As the generation of these sources is less when connected to grid, we call them as micro-grids. These micro grids generally use these DGs to distribute power to loads, and involve power electronic elements to control the generation. It induces energy into the system but also create a problem of harmonic distortions and voltage sags. To eliminate these sags and harmonics in the micro grid system caused by the power electronic devices employed by the renewable sources, we induce a UPQC (Unified Power Quality Conditioner) system. The UPQC system eliminates the harmonics in the systems and restores the voltage of the micro-grid system. We introduce a new topology called instantaneous reactive power (IRP) theory in the UPQC control to operate in a more efficient way, by utilizing RES (Renewable Energy Sources) at the DC-link. The RES support the UPQC system by injecting the active power generated by the resources through DC-link.

scholarly journals 1015 Power Stabilization System with Counter-Rotating Type Pump Turbine Unit for Renewable Energies

2013 ◽  
Vol 2013 (0) ◽  
pp. _1015-01_-_1015-02_
Author(s):  
Toru MIYAJI ◽  
Risa KASAHARA ◽  
Jin-hyuk KIM ◽  
Toshiaki KANEMOTO
Keyword(s):  
Turbine Unit ◽  
Renewable Energies ◽  
Stabilization System ◽  
Pump Turbine ◽  
Power Stabilization

Comparison of Archimedean Screw and Normal Pump in Pumped Storage Generation Combined with Wind Power Generation

2013 ◽  
Vol 291-294 ◽  
pp. 439-444
Author(s):  
Ya Zhou Zhai ◽  
Jing Hao Ma ◽  
Masaki Mitobe ◽  
Soichiro Uehara ◽  
Shao Yan Gon ◽  
...  
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Fossil Fuel ◽  
Storage System ◽  
Wind Power Generation ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Advantages And Disadvantages ◽  
Pumped Storage

Renewable energy resources such as wind energy have a disadvantage that the quality of output power is lower than that of fossil fuel resources. To solve this problem, pumped storage power system with Archimedean screw is designed. The structure and principle of operation are introduced and the advantages and disadvantages are discussed according to the theory and the simulation. In this paper, comparison has been done by collecting and analyzing the data and simulated the system on different condition to show the differences of the two types of pumps working on the pumped storage system.

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