scholarly journals An Optimization Model Based on Electric Power Generation in Steel Industry

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Jing-yu Liu ◽  
Jiu-ju Cai
Keyword(s):  
Power Generation ◽  
Electric Power ◽  
Optimization Model ◽  
Steel Industry ◽  
Optimal Allocation ◽  
Mathematical Optimization ◽  
Production Equipment ◽  
Electricity Production ◽  
Cost Of Energy ◽  
Save Energy

Electric power is an important energy in steel industry. Electricity accounts for roughly 20% to 30% of the gross energy consumption and costs about 10% of the gross cost of energy. In this paper, under the premise of ensuring the stability of energy supply and the normal production safety, the mathematical programming method and the dynamic mathematical optimization model were used to set up the surplus gas in the optimal allocation among the buffer users and steam production dispatching for the production equipment. The application of this optimization model can effectively improve the energy efficiency and the accuracy of power generation, making full use of secondary energy and residual heat. It also can realize the rationalization of the electricity production structure optimization which can effectively reduce the flare of the gas and steam on one hand, and save energy and decrease production cost on the other.

scholarly journals A Gini Coefficient-Based Impartial and Open Dispatching Model

Energies ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 3146
Author(s):  
Liang Sun ◽  
Na Zhang ◽  
Ning Li ◽  
Zhuo-ran Song ◽  
Wei-dong Li
Keyword(s):  
Power Generation ◽  
Gini Coefficient ◽  
Optimal Allocation ◽  
Electric Energy ◽  
Threshold Value ◽  
Economic Benefits ◽  
Electricity Production ◽  
System Operation ◽  
The Gini Coefficient ◽  
Proposed Model

According to the existing widely applied impartial and open dispatching models, operation fairness was mainly emphasized, which severely restricted the optimization space of the economy of the overall system operation and affected the economic benefits. To solve the above problems, a scheduling model based on Gini coefficient under impartial and open dispatching principle is proposed in this paper, which can consider the balance between the fairness and economy of system operation. In the proposed model, the Gini coefficient is introduced to describe the fairness of electric energy completion rate among different generation units in the form of constraint conditions. Because the electricity production schedule can reflect the economic income of the electric power enterprise, and the Gini coefficient is used as an economic statistical indicator to evaluate the fairness in the overall distribution of income in social statistics, it is more appropriate to be used to measure the fairness of the power generation dispatching. The objective of the proposed model is to minimize the total operation costs. In the model, the balance between the system operation economy and fairness can be realized by adjusting the Gini coefficient value. The simulation results show that the proposed model is an extension of the traditional model. Compared with the traditional economic dispatching model and normal “impartial and open dispatching” model, the proposed model can better coordinate the relationship between fairness and economy. It could provide more choices for power generation dispatchers. It could also provide a reference for regulatory departments to formulate relevant policies by adjusting the threshold value of the Gini coefficient. Case studies show that the power dispatching decisions according to the proposed model can provide a scientific and fair reference basis for dispatching schemes, and could reduce the generation costs and also achieve optimal allocation of resources on the basis of ensuring fair dispatching.

scholarly journals OPTIMIZATION MODEL FOR THE RUSSIAN ELECTRIC POWER GENERATION STRUCTURE TO REDUCE ENERGY INTENSITY OF THE ECONOMY

2019 ◽  
Vol 9 (3) ◽  
pp. 379-387
Author(s):  
Alexander N. Semin ◽  
Vadim V. Ponkratov ◽  
Kirill G. Levchenko ◽  
Andrey S. Pozdnyaev ◽  
Nikolay V. Kuznetsov ◽  
...  
Keyword(s):  
Power Generation ◽  
Electric Power ◽  
Optimization Model ◽  
Energy Intensity ◽  
Electric Power Generation ◽  
Generation Structure

scholarly journals Electric power generation in wind farms with pumping kites: levelized cost of energy and sensitivity analysis

2020 ◽  
Vol 9 (7) ◽  
pp. e666974528
Author(s):  
Anny Key de Souza Mendonça ◽  
Antonio Cezar Bornia
Keyword(s):  
Power Generation ◽  
Sensitivity Analysis ◽  
High Altitude ◽  
Electric Power ◽  
Energy Cost ◽  
Wind Farm ◽  
Wind Farms ◽  
Level Energy ◽  
Levelized Cost ◽  
Cost Of Energy

This research aims to analyze the levelized level energy cost of energy (LCOE) of wind farms with tethered airfoils. For this, it was considering the technical characteristics of the system, the location of operation, the necessary investments and the characteristics of the Brazilian market, to analyze the levelized cost of energy of three wind farm scenarios: Classic wind farm, Wind farm with tethered airfoils operating in Pumping Kite mode and a hybrid park with the two park configurations studied. The research makes use of the LCOE method. The results indicate that the technology with wired airfoils requires less investment and that wind farms with this technology can generate more energy than a classic wind farm of the same nominal power, since the wired airfoils can exploit high altitude winds, where they are more frequent and strong. The results also indicate that wind farms with wired airfoils are not only economically viable, but produce energy at a level cost, well below the values currently practiced for the sale of energy in the domestic market.

Study of effective factors in the design of zero energy buildings in arid climate (case of Isfahan City)

2018 ◽  
Vol 8 (1) ◽  
pp. 211-221
Author(s):  
Negar Aminoroayaei ◽  
Bahram Shahedi
Keyword(s):  
Fossil Fuels ◽  
Arid Climate ◽  
Zero Energy ◽  
Factors Affecting ◽  
Zero Energy Building ◽  
Cost Of Energy ◽  
Current Century ◽  
Increase Productivity ◽  
Save Energy ◽  
Zero Energy Buildings

In the current century, a suitable strategy is concerned for optimal consumption of energy, due to limited natural resources and fossil fuels for moving towards sustainable development and environmental protection. Given the rising cost of energy, environmental pollution and the end of fossil fuels, zero-energy buildings became a popular option in today's world. The purpose of this study is to investigate the factors affecting the design of zero-energy buildings, in order to reduce energy consumption and increase productivity, including plan form, climatic characteristics, materials, coverage etc. The present study collects the features of zero-energy building in Isfahan, which is based on the Emberger Climate View in the arid climate, by examining the books and related writings, field observations and using a descriptive method, in the form of qualitative studies. The results of the research showed that some actions are needed to save energy and, in general, less consumption of renewable energy by considering the climate and the use of natural conditions.

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