scholarly journals INVESTIGATING POINTS-OF-GENERATION POWER LOSSES ON THE NIGERIAN NATIONAL GRID FOLLOWING UNBUNDLING OF THE ELECTRIC UTILITY INDUSTRY

2021 ◽  
Vol 27 (1) ◽  
pp. 101-109
Author(s):  
AJEWOLE TITUS OLUWASUJI ◽  
OLABODE OLAKUNLE ELIJAH ◽  
OKAKWU IGNATIUS KEMA ◽  
EGBEDINNI OLAKUNLE FEMI
Keyword(s):  
Power Plants ◽  
Electric Power Industry ◽  
Numerical Data ◽  
Electric Utility ◽  
Green Energy ◽  
Electric Utility Industry ◽  
Renewable Electricity ◽  
Policy Makers ◽  
Yearly Average ◽  
Generation Capacity

Aside from the domino effects of being radial in structure, the Nigerian national electric grid is currently suffering from deteriorated infrastructures and unpredictable fuel supply for power generation. Massive introduction of green energy-based microgrid alternatives has been proposed as a major means of resolving the challenges. Such paradigm shift needs to be substantiated within the context of the present situation of the grid, for the consumption of policy makers and implementers, hence; the performance of the generation sub-system of the grid in the post-deregulation era is evaluated in this study. Two-year numerical data on the operational capacities of the twenty-nine power plants that are currently connected to the grid are employed to profile the behaviours of the plants over the period. Yearly averages of the three operational capacities of each plant are estimated, and by comparing the respective capacities, generation losses are computed for each of the plants. With 5,063.8 MW yearly average generation capacity in the year 2018, a loss of 61.02 % was experienced on the sub-system; while the generation loss was 61.55 % in the year 2019 that has yearly average generation capacity of 5,062.5 MW. For the two years combined, the average generation capacity is 5,063.2 MW at 61.36 % power loss. These estimations reveal that the pre-deregulation loss profile of the generation sub-system has not been curtailed despite the unbundling of the electric power industry. Generation loss has rather persisted and keeps taking a heavy toll on the electric utility market of the country. Significant deployment of renewable electricity microgrid is therefore required to provide enduring solution.

scholarly journals Cyclic Energy Demands Supplied Economically With Gas Turbines and Combined Cycle Plants

1971 ◽  
Author(s):  
H. L. Smith ◽  
R. J. Budenholzer
Keyword(s):  
Gas Turbines ◽  
Nuclear Power ◽  
Power Plants ◽  
Electric Utility ◽  
Combined Cycle ◽  
Electric Utility Industry ◽  
Utility Industry ◽  
New Class ◽  
Energy Demands ◽  
Distillate Fuel

The electric utility industry is finding a need for a new class of generation termed intermediate. This paper presents results of generation addition pattern studies performed to determine the relative merits of steam peaking plants and combined cycle plants in filling these needs. Corresponding optimum addition patterns are established for simple cycle gas turbine and nuclear power plants. The combined cycle and steam peaking plants are shown to be comparable at high cost levels, while the combined cycle shows definite advantage if permitted to burn non-distillate fuel.

An Evaluation of the Equipment Tagging Process in Nuclear Power Stations

1983 ◽  
Vol 27 (1) ◽  
pp. 93-96
Author(s):  
Peter Doyle ◽  
Lothar Schroeder ◽  
Stephen Brewer
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Electric Utility ◽  
Electric Utility Industry ◽  
Utility Industry ◽  
Power Stations ◽  
The Status ◽  
Identification Techniques ◽  
Tagging Methods

The electric utility industry uses equipment “tagging” methods to identify inoperable equipment and to prevent the status of equipment from being changed for various reasons. Tagging involves identifying such equipment with small tags or other indications and maintaining records of equipment status. Operator reliability in the proper placement of tags is a function of training, good tagging procedures, adequate equipment identification techniques and tag design, among other things. This paper presents the results of an investigation of the tagging process at nuclear power plants.

Offshore Nuclear Power Plants

1973 ◽  
Vol 10 (03) ◽  
pp. 244-253
Author(s):  
Muzaffer Kehnemuyi ◽  
Robert E. Lochbaum
Keyword(s):  
Power Systems ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Public Awareness ◽  
Electric Energy ◽  
Electric Utility ◽  
Specific Reference ◽  
Electric Utility Industry ◽  
Absolute Growth

Historically the demand for electric energy has approximately doubled every decade since the 1930's, and projections indicate this trend is expected to continue into the mid-80's. Although the rate may then be expected to decrease slightly, the absolute growth in kilowatts will continue to be very large. The electric utility industry is faced with the problem of supplying this growth in a manner consistent with the preservation of the environment and, at the same time, overcoming present problems of siting, licensing, public awareness, construction, and financing. The offshore nuclear power plant is a concept which goes far toward solving many of these problems. This paper describes the floating nuclear plant concept with specific reference to the Atlantic No. 1 and No. 2 units being manufactured for Public Service Electric & Gas Company by Offshore Power Systems. Site description and selection criteria, the shore support facilities, the breakwater required to protect the plants, the floating nuclear power plants, the manufacturing facility for the plants, and supporting studies being conducted are discussed.

Co-Benefit Research on IGCC Technology Used in the Power Plant

2013 ◽  
Vol 726-731 ◽  
pp. 983-987
Author(s):  
Chao Huang ◽  
Xiu Qin Ma ◽  
Feng Yun Jin ◽  
Liu Wen Su
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Economic Benefit ◽  
Power Plants ◽  
Electric Power Industry ◽  
Pollutant Emissions ◽  
Total Power ◽  
Emissions Reduction ◽  
Environmental Benefit ◽  
Generation Capacity

China has mainly power generation capacity of coal-fired power plants. Coal-fired power plants account for about 80% of total power generation capacity in total annually. It will inevitably lead to a large amount of pollutant emissions, therefore, IGCC technology is particularly important to promote. This paper intends to analysize the environmental benefit and economic benefit of the IGCC technology used in the power plant based on the developed methodology. The purpose is to understand the advantages of IGCC technology for energy conservation and emissions reduction in the electric power industry to provide better technical references.

scholarly journals Key Performance Indicators for an Energy Community Based on Sustainable Technologies

2021 ◽  
Vol 13 (16) ◽  
pp. 8789
Author(s):  
Giovanni Bianco ◽  
Barbara Bonvini ◽  
Stefano Bracco ◽  
Federico Delfino ◽  
Paola Laiolo ◽  
...  
Keyword(s):  
Performance Indicators ◽  
Urban Areas ◽  
High Performance ◽  
Power Plants ◽  
New Technologies ◽  
Storage Systems ◽  
Clean Energy ◽  
Key Performance Indicators ◽  
Energy Performance ◽  
Green Energy

As reported in the “Clean energy for all Europeans package” set by the EU, a sustainable transition from fossil fuels towards cleaner energy is necessary to improve the quality of life of citizens and the livability in cities. The exploitation of renewable sources, the improvement of energy performance in buildings and the need for cutting-edge national energy and climate plans represent important and urgent topics to be faced in order to implement the sustainability concept in urban areas. In addition, the spread of polygeneration microgrids and the recent development of energy communities enable a massive installation of renewable power plants, high-performance small-size cogeneration units, and electrical storage systems; moreover, properly designed local energy production systems make it possible to optimize the exploitation of green energy sources and reduce both energy supply costs and emissions. In the present paper, a set of key performance indicators is introduced in order to evaluate and compare different energy communities both from a technical and environmental point of view. The proposed methodology was used in order to assess and compare two sites characterized by the presence of sustainable energy infrastructures: the Savona Campus of the University of Genoa in Italy, where a polygeneration microgrid has been in operation since 2014 and new technologies will be installed in the near future, and the SPEED2030 District, an urban area near the Campus where renewable energy power plants (solar and wind), cogeneration units fed by hydrogen and storage systems are planned to be installed.

Comparison of Two Linear Collectors in Solar Thermal Plants: Parabolic Trough vs Fresnel

2011 ◽  
Author(s):  
A. Giostri ◽  
M. Binotti ◽  
P. Silva ◽  
E. Macchi ◽  
G. Manzolini
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Solar Thermal ◽  
Heat Transfer Fluid ◽  
Steam Generation ◽  
Parabolic Trough ◽  
Research Activity ◽  
Optical Efficiency ◽  
Synthetic Oil ◽  
Yearly Average

Parabolic trough can be considered the state of the art for solar thermal power plants thanks to the almost 30 years experience gained in SEGS and, recently, Nevada Solar One plants in US and Andasol plants in Spain. One of the major issues that limits the wide diffusion of this technology is the high investment cost of the solar field and, particularly, of the solar collector. For this reason, since several years research activity has been trying to develop new solutions with the aim of cost reduction. This work compares commercial Fresnel technology with conventional parabolic trough plant based on synthetic oil as heat transfer fluid at nominal conditions and evaluates yearly average performances. In both technologies, no thermal storage system is considered. In addition, for Fresnel, a Direct Steam Generation (DSG) case is investigated. Performances are calculated by a commercial code, Thermoflex®, with dedicated component to evaluate solar plant. Results will show that, at nominal conditions, Fresnel technology have an optical efficiency of 67% which is lower than 75% of parabolic trough. Calculated net electric efficiency is about 19.25%, while parabolic trough technology achieves 23.6%. In off-design conditions, the gap between Fresnel and parabolic trough increases because the former is significantly affected by high radiation incident angles. The calculated sun-to-electric annual average efficiency for Fresnel plant is 10.2%, consequence of the average optical efficiency of 38.8%, while parabolic trough achieve an overall efficiency of 16%, with an optical one of 52.7%. An additional case with Fresnel collector and synthetic oil outlines differences among investigated cases. Finally, because part of performance difference between PT and Fresnel is simple due to different definitions, additional indexes are introduced in order to make a consistent comparison.

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