OPTIMAL DESIGN AND TECHNOLOGY ECONOMICAL ANALYSIS OF90% - 100% RENEWABLE PENETRATED POWER PLANT TO SUPPLY THE ELECTRICAL LOAD OF İSKELE /
DENİZ KURAN; SUPERVISOR: PROF. DR. MEHMET KUŞAF
- 67 sheets; 31 cm. Includes CD
Thesis (MSc) - Cyprus International University. Institute of Graduate Studies and Research Electrical and Electronics Engineering
Includes bibliography (sheets 60-67)
ABSTRACT
In this thesis, one of the superior renewable energy source of Cyprus, which is solar energy is combined with other energy sources like wind, pumped hydro storage, battery bank and grid connection with different scenarios. Major objective of this thesis is to obtain 90% - 100% renewable energy penetrated hybrid standalone power plant to supply the load of İskele which is a touristic city of Turkish Republic of Northern Cyprus (TRNC). For this purpose, each scenario is simulated to obtain optimal configuration by using Homer. Net present cost (NPC), total annualized cost (TAC), LCoE (Levelized Cost of Electricity) and period of payback (PP) are calculated and analysed to determine and commentate applicability of each scenario. Four different scenarios are studied in this thesis which are PV – pumped hydro – wind based hybrid power plant (Scenario 1), PV – pumped hydro based hybrid power plant (Scenario 2), PV – vanadium redox flow battery based hybrid power plant (Scenario 3) and PV – wind – pumped hydro – grid connection based hybrid power plant (Scenario 4).
After obtaining simulation results and economical parameters, comparing Scenario 2 and 3 proved that using pumped hydro storage instead of chemical battery units is more effective. NPC, TAC and LCoE values of Scenario 3 are 260% of Scenario 2. Comparing Scenario 1 and 2 shows that combining wind turbine generator with solar PV increases the flexibility and robustness of the power system. NPC, TAC and LCoE of Scenario 2 is approximately 135% and installed generation capacity is 140% when compared to Scenario 1. Finally, it is obtained that between 4 scenarios, only Scenario 1 and 4 are feasible. Comparing Scenario 1 and 4 proves that NPC and TAC of Scenario 1 is 129% and LCoE is 138% of Scenario 4. Payback period of Scenario 1 and 4 are 29 years and 14 years respectively.
If the load demand studied in all scenarios is supplied with Teknecik and Kalecik power plants which are fossil fuel power plants of TRNC, 7.7% less greenhouse gases are saved by using Scenario 4 because of grid connection.
In the light of all the facts mentioned above for the purpose of obtaining 90% - 100% renewable penetrated hybrid power plant, Scenario 4 is the most appropriate design with 92.3% renewable penetration related to electrical and economical parameters.