TcslinearFresnel pysam not working

Hello!

I am trying to make a simulation in pysam using the TcslinearFresnel module and I am having problems.
The problem is that it doesn´t matters what nameplate capacity do I put, or what Tou values or TES hours I put in the inputs, it doesn´t change the generation output, giving the same values all the time and wrong ones in my opinion.

This doesn´t happens to me using the PySAM.TroughPhysical or PySAM.TcsmoltenSalt modules, and I haven't found much information on fresnel.


The code is the next one:

import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
import math
import csv
get_ipython().run_line_magic('matplotlib', 'inline')

import PySAM.TcslinearFresnel as tcf
system_model_fresnel = tcf.default('DSLFSingleOwner')

S_M=2.5
tshours=14

system_model_fresnel.Weather.file_name="CollahuasiCSV.csv"


#Capacidad máxima de la turbina kW
Nameplate_capacity=5500
system_model_fresnel.LinearFresnelr.system_capacity=Nameplate_capacity

#Horas de TES
system_model_fresnel.Solarfield.tes_hours=tshours
#Solar Multiple
system_model_fresnel.Solarfield.solarm=S_M

# **LinearFresnel TouTranslator Group**

Lista_4 = [[9] * 24 for _ in range(12)]
Lista_4pd=pd.DataFrame(Lista_4)


#Tou:Time of use

system_model_fresnel.TouTranslator.weekday_schedule=Lista_4pd.values.tolist()
system_model_fresnel.TouTranslator.weekend_schedule=Lista_4pd.values.tolist()

system_model_fresnel.execute()

system_model_fresnel.Outputs.gen
 

Hi Sebastian,

The variable 'P_ref' is equivalent to the "Reference output electric power at design condition" input on the Power Cycle page for the Molten Salt Linear Fresnel model. I think you should change that variable instead of 'system_capacity'.

The weekday and weekend schedules won't have an effect on the results if you don't also change the dispatch control inputs (see the Thermal Storage page in SAM to see what I mean). Those inputs have names like 'tslogic_a', 'tslogic_b', 'tslogic_c', and 'ffrac'. I recommend using the SAM code generator to see those variables in the JSON file as described here: nrel-pysam.readthedocs.io/en/main/inputs-from-sam.html

Best regards,
Paul.


 

Dear Paul,

Thank you for the response! I've tried doing exactly what the link sent by you says and I have an AttributeError. The code is the next one:

import json
import PySAM.TcslinearFresnel as fsl
import PySAM.Grid as Grid
import PySAM.Utilityrate5 as UtilityRate
import PySAM.Cashloan as Cashloan

fr = fsl.new()
grid = Grid.from_existing(fr)
ur = UtilityRate.from_existing(fr)
cl = Cashloan.from_existing(fr)

dir = "C:/Users/seba_/Desktop/Tesis/Codigo Python/Fresnel/"
file_names = ["Fresnel_tcsMSLF","Fresnel_grid","Fresnel_utilityrate5","Fresnel_singleowner"]
modules = [fr, grid, ur, cl]

for f, m in zip(file_names, modules):
    with open(dir + f + ".json", 'r') as file:
        data = json.load(file)
        # loop through each key-value pair
        for k, v in data.items():
            if k != "number_inputs":
                m.value(k, v)

The file names are these ones:
 


And it gives me the next message:

Hi Sebastian,

Please attach images as files to your post and then insert them. Pasting the image into the editor does not always work.

I could not see the text of the error message. Please paste the text of the message into your post.

If you would like help troubleshooting, please attach a .zip file with your script and supporting files and I will see if I can help.

Best regards,
Paul.

Dear Paul,

I attached the files in this post.
The error message is the follwing one: