scholarly journals Exergy and Economic Evaluation of a Hybrid Power Plant Coupling Coal with Solar Energy

2019 ◽  
Vol 9 (5) ◽  
pp. 850 ◽  
Author(s):  
Cristina Serrano-Sanchez ◽  
Marina Olmeda-Delgado ◽  
Fontina Petrakopoulou
Keyword(s):  
Power Plant ◽  
Solar Energy ◽  
Fuel Consumption ◽  
Capital Investment ◽  
Power Plants ◽  
Hybrid Plant ◽  
Operating Conditions ◽  
Levelized Cost Of Electricity ◽  
Hybrid Power ◽  
Hybrid Power Plant

Hybrid power plants that couple conventional with renewable energy are promising alternatives to electricity generation with low greenhouse gas emissions. Such plants aim to improve the operational stability of renewable power plants, while at the same time reducing the fuel consumption of conventional fossil fuel power plants. Here, we propose and evaluate the thermodynamic and economic viability of a hybrid plant under different operating conditions, applying exergy and economic analyses. The hybrid plant combines a coal plant with a solar-tower field. The plant is also compared with a conventional coal-fired plant of similar capacity. The results show that the proposed hybrid plant can emit 4.6% less pollutants due to the addition of solar energy. Fuel consumption can also be decreased by the same amount. The exergy efficiency of the hybrid power plant is found to be 35.8%, 1.6 percentage points higher than the efficiency of the conventional coal plant, and the total capital investment needed to build and operate a plant is 8050.32 $/kW. This cost is higher than the necessary capital investment of 5979.69 $/kW to build and operate a coal-fired power plant, and it is mainly due to the higher purchased equipment cost. Finally, the levelized cost of electricity of the hybrid plant is found to be 0.19 $/kWh (using both solar and coal resources) and 0.12 $/kWh when the plant is fueled only with coal.

Reliability Index of Wind-Solar Hybrid Power Plants using the Expected Energy Not Supplied Method

2019 ◽  
Vol 8 (4) ◽  
pp. 9449-9456
Keyword(s):  
Power Plant ◽  
Power Systems ◽  
Electricity Market ◽  
Reliability Index ◽  
Power Plants ◽  
Initial Conditions ◽  
Hybrid Plant ◽  
Total Power ◽  
Hybrid Power ◽  
Hybrid Power Plant

This paper proposes the reliability index of wind-solar hybrid power plants using the expected energy not supplied method. The location of this research is wind-solar hybrid power plants Pantai Baru, Bantul, Special Region of Yogyakarta, Indonesia. The method to determine the reliability of the power plant is the expected energy not supplied (EENS) method. This analysis used hybrid plant operational data in 2018. The results of the analysis have been done on the Pantai Baru hybrid power plant about reliability for electric power systems with EENS. The results of this study can be concluded that based on the load duration curve, loads have a load more than the operating kW of the system that is 99 kW. In contrast, the total power contained in the Pantai Baru hybrid power plant is 90 kW. This fact makes the system forced to release the load. The reliability index of the power system in the initial conditions, it produces an EENS value in 2018, resulting in a total value of 2,512% or 449 kW. The EENS value still does not meet the standards set by the National Electricity Market (NEM), which is <0.002% per year. Based on this data, it can be said that the reliability of the New Coast hybrid power generation system in 2018 is in the unreliable category.

Design of Hybrid Portable Underwater Turbine Hydro and Solar Energy Power Plants: Innovation to Use Underwater and Solar Current as Alternative Electricity in Dusun Dongol Sidoarjo

2021 ◽  
Vol 3 (2) ◽  
pp. 93-98
Author(s):  
Anggara Trisna Nugraha ◽  
Dadang Priyambodo
Keyword(s):  
Renewable Energy ◽  
Power Plant ◽  
Solar Energy ◽  
Power Plants ◽  
Flow Direction ◽  
Electrical Energy ◽  
Energy Potential ◽  
Hybrid Power ◽  
Hybrid Power Plant ◽  
The Government

The need for electrical energy in Indonesia continues to increase every year. In line with the increase in the electrification ratio to 100% in 2050, the demand for electrical energy is projected to reach 7 times, namely 1,611 TWh. To meet electricity needs, the government has created a 35 GW program, but one of the largest contributors to power generation fuel is coal with a share of 58% or around 50 GW which is estimated to be exhausted within the next 68 years. For this reason, innovations are needed in terms of fulfilling electrical energy by utilizing renewable energy potential, one of which is hydro energy, which is 45,379 MW from a total resource of 75,091 MW. Therefore, from this potential, innovations related to renewable energy have been created, namely the Hybrid Portable Underwater Turbine Hydro and Solar Energy hybrid power plant. This power plant uses an undersea current as a propulsion which is hybridized with solar power to increase the production of electrical energy. This power plant has the advantage that there is an Underwater turbine design that is resistant to underwater flow and a water flow direction to increase the work efficiency of the underwater turbine. From the test results, the portable Underwater turbine hydro produces 950 W in a day. Solar panels produce 65.6 Watts a day. The total hybrid that can be produced is 1.02 kW a day. In its implementation it can supply loads of up to 900 (VA) such as lamps, fans, TV, etc. This hybrid power plant can be a solution to help meet electricity needs in the area around Dusun Dongol, Sidoarjo through alternative electrical energy innovations.

Thermo-Economic Evaluation of Solar Thermal and Photovoltaic Hybridization Options for Combined-Cycle Power Plants

2014 ◽  
Vol 137 (3) ◽  
Author(s):  
James Spelling ◽  
Björn Laumert
Keyword(s):  
Power Plant ◽  
Solar Energy ◽  
Power Plants ◽  
First Generation ◽  
Combined Cycle ◽  
Solar Thermal ◽  
Hybrid Power ◽  
Hybrid Power Plant ◽  
Carbon Dioxide Co2 ◽  
Solar Electricity

The hybridization of combined-cycle power plants with solar energy is an attractive means of reducing carbon dioxide (CO2) emissions from gas-based power generation. However, the construction of the first generation of commercial hybrid power plants will present the designer with a large number of choices. To assist decision making, a thermo-economic study has been performed for three different hybrid power plant configurations, including both solar thermal and photovoltaic hybridization options. Solar photovoltaic combined-cycle (SPVCC) power plants were shown to be able to integrate up to 63% solar energy on an annual basis, whereas hybrid gas turbine combined-cycle (HGTCC) systems provide the lowest cost of solar electricity, with costs only 2.1% higher than a reference, unmodified combined-cycle power plant. The integrated solar combined-cycle (ISCC) configuration has been shown to be economically unattractive.

Modeling, Simulation, and Performance Evaluation Analysis of a Parabolic Trough Solar Collector Power Plant Coupled to an Organic Rankine Cycle Engine in North Eastern Greece Using trnsys

2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Pantelis N. Botsaris ◽  
Alexandros G. Pechtelidis ◽  
Konstantinos A. Lymperopoulos
Keyword(s):  
Power Plant ◽  
Simulation Model ◽  
Small Deviation ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Operating Conditions ◽  
Parabolic Trough ◽  
Hybrid Power ◽  
Hybrid Power Plant ◽  
And Performance

The present work is focused on the development of a simulation model for an existing cogeneration power plant, which utilizes a solar thermal field with parabolic trough solar collectors coupled to an Organic Rankine Cycle engine. The power plant is modeled in the trnsys v.17 software package and its performance has been validated with real operating conditions. The simulated system (concentrated solar power (CSP) field and ORC engine) is the main part of a hybrid power plant located near “Ziloti” village of the Municipality of Xanthi, in northeastern Greece. The construction of the hybrid power plant was funded by the Strategic Co-Funded Project of the European Territorial Cooperation Program Greece–Bulgaria 2007–2013 with the acronym ENERGEIA. The power plant simulated in this paper includes a 234 kWth solar parabolic trough collector (PTC) field, a 5 m3 thermal energy storage tank, and a 5 kWe ORC engine for the production of thermal and electrical energies. The results of the simulations present small deviation in contrast to the real operating data of the CSP power plant coupled with the ORC engine, therefore the simulation model is considered as reliable.

scholarly journals A Test Rig for the Experimental Investigation of a MGT/SOFC Hybrid Power Plant Based on a 3kWel Micro Gas Turbine

2019 ◽  
Vol 113 ◽  
pp. 02012
Author(s):  
Martina Hohloch ◽  
Melanie Herbst ◽  
Anna Marcellan ◽  
Timo Lingstädt ◽  
Thomas Krummrein ◽  
...  
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Power Plants ◽  
Electrical Power ◽  
Test Rig ◽  
Micro Gas Turbine ◽  
Hybrid Power ◽  
Hybrid Power Plant ◽  
Set Up ◽  
Electrical Power Output

A hybrid power plant consisting of a micro gas turbine (MGT) and a solid oxide fuel cell (SOFC) is a promising technology to reach the demands for future power plants. DLR aims to set up a MGT/SOFC hybrid power plant demonstrator based on a 3 kWel MTT EnerTwin micro gas turbine and an SOFC module with an electrical power output of 30 kWel from Sunfire. For the detailed investigation of the subsystems under hybrid conditions two separate test rigs are set up, one in which the MGT is connected to an emulator of the SOFC and vice versa. The paper introduces the set-up and the functionalities of the MGT based test rig. The special features are highlighted and the possibilities of the cyber physical system for emulation of a hybrid system are explained.

scholarly journals Planning of Hybrid Micro-Hydro and Solar Photovoltaic Systems for Rural Areas of Central Java, Indonesia

2020 ◽  
Vol 2020 ◽  
pp. 1-16 ◽  
Author(s):  
Ramadoni Syahputra ◽  
Indah Soesanti
Keyword(s):  
Power Plant ◽  
Optimal Design ◽  
Rural Areas ◽  
Power Plants ◽  
Solar Photovoltaic ◽  
Capital Costs ◽  
Hybrid Power ◽  
Central Java ◽  
Hydropower Potential ◽  
Hybrid Power Plant

This paper proposes the planning of hybrid micro-hydro and solar photovoltaic system for rural areas of Central Java, Indonesia. The Indonesian government has paid great attention to the development of renewable energy sources, especially solar and hydropower. One area that has a high potential for both types of energy is the province of Central Java, located on the island of Java, Indonesia. In this research, we conduct field research to determine the ideal capacity of solar and micro-hydro hybrid power plants, electricity load analysis, and optimal design of hybrid power plants. Data on the potential of micro-hydro plants are obtained by direct measurement on the Ancol Bligo irrigation channel located in Bligo village, Ngluwar district, Magelang regency, Central Java province, Indonesia. Data on solar power potential were obtained from NASA’s database for solar radiation in the Central Java region. Hydropower potential data include channel length, debit, heads, and power potential in irrigation channels originating from rivers. These data are used to design an optimal hybrid power plant. The method used to obtain the optimal design of a hybrid power plant system is based on the analysis of capital costs, grid sales, cost of energy, and net present cost. Based on the parameters of the analysis, the composition of the optimal generator for the on-grid scheme to the distribution network can be determined. The results showed that hybrid power plants were able to meet the needs of electrical energy in the villages around the power plant and that the excess energy could be sold to national electricity providers.

Independent Hybrid Power Plant “PEMFC+MEMS” With Use of Molecular Ceramic Membranes to Separate CO and H2

2005 ◽  
Author(s):  
A. V. Soudarev ◽  
A. A. Souryaninov ◽  
V. G. Konakov ◽  
A. S. Molchanov
Keyword(s):  
Power Plant ◽  
Numerical Study ◽  
Ceramic Membranes ◽  
Characteristic Size ◽  
Hybrid Plant ◽  
Normal Operation ◽  
Mean Power ◽  
Hybrid Power ◽  
Target Values ◽  
Hybrid Power Plant

As analysis of thermal-technical parameters of the existing polymer exchange membrane fuel cells (PEMFC) indicated, their electrical efficiency is not above 32–37% which is due to relatively high (10–15%) electric power consumption to cover own needs. Its major percentage falls on pump and compressor drive (air, fuel, water supply) using the AC electric engines connected via converter to FC. A real alternative allowing the efficiency increase up to 45% and higher is to apply hybrid plants when an AC turboelectric generator (TEG) is built into the thermodynamic cycle, the latter operating at the expense of utilization of the FC reagent stream power. TEG is a micro turbocompressor with incorporated turbo generator manufactured on the basis of the micro electric-mechanical system (MEMS) technology. The numerical study over the hybrid cycle effectiveness revealed that the optimum efficiency is ensured provided the TEG power does not exceed 12–15% of the total hybrid power plant power. Considering a value of the PEMFC mean power of around 8, a need arises in TEG of 500 to 1500W power to operate as a part of hybrid engine. Among various auxiliaries involved into the PEMFC, there should be devices that ensure getting target values in terms of hydrogen purity, a dominant synthetic gas fraction, at the FC inlet. A need to get and maintain hydrogen purity on the level of 99.99% is related with that if CO content in mixture is higher 0.01%, then a normal operation of FC fails due to “poisoning” effect of the platinum-containing catalysts of the FC electrodes. To forestall this, the palladium molecular membranes are now typically applied which causes the filtered flow temperature limitations within values not exceeding 500–550°C. At the same time, PEMFC in most cases must operate on air and syngas produced by reforming, with their temperature amounting to 800–900°C. To provide this, we need to have ceramic molecular membranes (CMM) made of a ceramic support in which macropores nano pores are formed (characteristic size of less 0.3nm), the latter achieved through application of a complex of various chemical and physical processes. In the paper presented, findings of numerical studies over a hybrid engine plant are provided, this hybrid plant (PEMFC + MEMS) as compared with alternatives to existing and offered schemes, and, also, test data on the zeolite-based support CMM are demonstrated.

scholarly journals Analisis Pembangkit Listrik Sistem Hybrid Grid Connected Di Villa Peruna Saba, Gianyar – Bali

2019 ◽  
Vol 6 (2) ◽  
pp. 1
Author(s):  
Gordon Arifin Sinaga ◽  
I Made Mataram ◽  
Tjok Gede Indra Partha
Keyword(s):  
Power Plant ◽  
Power Systems ◽  
Power Plants ◽  
Electrical Energy ◽  
Power Source ◽  
Natural Processes ◽  
Hybrid Power ◽  
Hybrid Power Plant ◽  
Solar Power Plants ◽  
Hybrid Grid

Renewable energy is energy that comes from natural processes that will not be exhausted and sustainable if managed properly. In its use, to maintain the continuity of the availability of electrical energy maximally, it is necessary to combine several types of power plants that are connected to the grid or better known as hybrid grid connected power systems. This research took place at Villa Peruna Saba, Gianyar - Bali which uses a hybrid grid connected power system that combines photovoltaics and generators connected to the grid utilty in supplying electricity loads. The analysis is carried out on the characteristics of the average load, the contribution of each electric power source and the workings of the hybrid grid connected hybrid power plant system. From the analysis, it is known that the contribution of power derived from solar power plants is 561.27 kW or 22.41% in April 2018 and 510.72 kW or 20.71% in May 2018.

Modeling of a SOFC-GT Hybrid Power Plant With Anode Recycling

2010 ◽  
Author(s):  
Denver Cheddie ◽  
Renique Murray
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Power Plants ◽  
Hybrid Plant ◽  
Second Law ◽  
Steam Generation ◽  
Hybrid Power Plant ◽  
External Water ◽  
Gas Turbine Power Plant ◽  
Generation Unit

Power generation using gas turbine power plants operating on the Brayton cycle suffers from low efficiencies and high irreversibilities. In this work, a solid oxide fuel cell (SOFC) is proposed for integration into a 10 MW gas turbine power plant, operating at 30% electrical efficiency (13.7% second law efficiency). The SOFC system entails anode recycling to enable self sustaining reformation reactions, thus alleviating the need for an external water supply and steam generation unit. It also utilizes turbine outlet heat recovery to ensure a sufficiently high SOFC operating temperature. The power output of the hybrid plant is 26.2 MW at 63.4% efficiency (35.3% second law efficiency). The hybrid plant performs best when 70–80% anode recycling is used. A thermo-economic model predicts a payback period of 4.6 years, based on future projected SOFC cost estimates.

Thermoeconomic Evaluation of Solar Thermal and Photovoltaic Hybridization Options for Combined-Cycle Power Plants

2014 ◽  
Author(s):  
James Spelling ◽  
Björn Laumert
Keyword(s):  
Power Plant ◽  
Solar Energy ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
First Generation ◽  
Combined Cycle ◽  
Solar Thermal ◽  
Hybrid Power ◽  
Cycle Systems ◽  
Solar Electricity

The hybridization of combined-cycle power plants with solar energy is an attractive means of reducing carbon dioxide emissions from gas-based power generation. However, the construction of the first generation of commercial hybrid power plants will present the designer with a large number of choices. To assist decision making, a thermoeconomic study has been performed for three different hybrid power plant configurations, including both solar thermal and photovoltaic hybridization options. Solar photovoltaic combined-cycle power plants were shown to be able to integrate up to 63 % solar energy on an annual basis, whereas hybrid gas-turbine combined-cycle systems provide the lowest cost of solar electricity, with costs only 2.1 % higher than a reference, unmodified combined-cycle power plant. The integrated solar combined-cycle configuration has been shown to be economically unattractive.

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