Technical and economic evaluation of how to supply energy to consumers through the system of Combined Heat and Power with solar cells

Document Type : Original Article

Authors

1 Master of Electrical Engineering Yadegar-e-Imam Khomeini(Rah) Shahre-Rey Branch, Islamic Azad University, Tehran, Iran

2 Assistant Professor, Department of Electrical Engineering, Yadegar-e-Imam Khomeini(Rah) Shahre-Rey Branch, Islamic Azad University, Tehran, Iran

Abstract

Today, the use of integrated (hybrid) energy supply systems due to the reduction of electrical and thermal losses, better control of distributed generation sources to better feed the system loads, reduce the emission of environmental pollutants and increase the reliability of load supply even in the event of failure , Is on the rise. In this research, an optimal and economical method to design a hybrid energy supply system based on CHP sources and photovoltaic sources to combined heat and power required by consumers, taking into account various costs such as initial investment cost, operating cost, Fuel costs, maintenance costs and various technical constraints such as production limitations of each source, power exchange with the upstream network and maintaining power balance are presented. Inheritance (genetic) algorithm has been used to solve the resulting optimization problem due to its good ability to solve complex problems with a large number of variables. The results show that in designing the system to supply electricity and heat, the system connected to the grid requires lower operating costs than the other two modes and the possibility of exchanging power with the upstream network due to the purchase of electrical power required from The network significantly reduces system costs in the event of a shortage of photovoltaic panels and the sale of power to the grid during off-peak hours and overproduction, as well as during peak hours of the upstream grid, where electricity prices are higher.

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References

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History

  • Receive Date: 21 September 2022
  • Revise Date: 06 February 2023
  • Accept Date: 18 April 2023

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