Hi,
I am analyzing the performance of hybrid concentrated Solar Power and Solar PV plant with a backup boiler operated by natural gas. The nominal nameplate of CSP is 100 MW and PV plant capacity is 80 MW . The boiler is operated by fuel and it is integrated in the power cycle that is part of the CSP plant. It should be able to operate the Rankine cycle , hence the hybrid system in its full capacity (i.e. 100 MW) when the renewable resources are not available.
The general equation to calculate the capacity factor of a given plant is :
CP= Served load / (Installed capacity * 8760)
where 8760 is the number of hours over a span of one year.
Mu questions:
- What is the installed capacity in this case? Is it the sum of the energy generators (i.e. CSP and PV) or the capacity of the hybrid plant (100 MW)
- If the answer is is the sum of generators capacities, should the boiler be considered as generator or not?
Thank you
Dear Abdul,
to calculate the CF I have the following questions:
1) Is the PV capacity AC or DC (?
2) Where is the plant located?
3) What is the capacity of the grid connection?
4) What type of CPV plant are you looking at?
5) Has the CPV plant storage? If yes for how many hours?
6) What fuel is used?
Best regards
Arnulf
Hi Dr.Arnulf,
1- The PV capacity is AC
2- Plant located in Middle east
3- Grid connection capacity is 100 MW
4- I don't know what CPV stands for. My plant includes CSP with solar PV modules
5- The plant is integrated with thermal heat storage using molten salt.
6- The natural gas is used as a fuel .
Thank you
Abdul Hamed
The capacity factor CF = Pav/Pmax
In your case, Pmax is 200 MW as the boiler can produce 100 MWmax at any time while the rest of the plant has 100 MW installed capacity.
Thank you Prof.Mohamed,
I presume that Pav is the energy injected to grid. Isn't ?
Regard,
What is the maximum ex bus capacity that the hybrid plant (PV + Boiler) is capable of delivering. It will depend on the configuration.
Anjan KUMAR Sinha
The hybrid system will comprise SPT plant also. The maximum capacity is 100 MW. The boiler will function as auxiliary system that to cover the power deficient. Thus, its capacity is equal to the planned output which is 100 MW.
The capacity factor of the hybrid system has to be calculated on the basis of the maximum ex Bus power that the system working together is capable of delivering to the grid/system.
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