Shading results

[IB31]

In shading animation is showing linear(7.6%) as well as electrical losses(39.3%) but the shading scene is not showing the occurence of shade on the table (Yellow/Grey).Also is the linear and electrical loss indicated is instatenous loss for an hour or a total loss for a day (21-12-22)?

Does the shading factor tables represents a particular day (21-12-22) or its gives the total/Average loss for the entire year. Can the shading table loss (linear)be converted to equivalent electrical loss values. The azimuth in the shading factor table represents the azimuth of the solar panel or the solar azimuth angle( east -west).

[IB31]

On 10/6/2023 at 4:23 PM, IB31 said:

In shading animation is showing linear(7.6%) as well as electrical losses(39.3%) but the shading scene is not showing the occurence of shade on the table (Yellow/Grey).Also is the linear and electrical loss indicated is instatenous loss for an hour or a total loss for a day (21-12-22)?

Does the shading factor tables represents a particular day (21-12-22) or its gives the total/Average loss for the entire year. Can the shading table loss (linear)be converted to equivalent electrical loss values. The azimuth in the shading factor table represents the azimuth of the solar panel or the solar azimuth angle( east -west).

 

@Michele Oliosi@Michel Villoz Please consider to provide clarification here.

[Michele Oliosi]

 

On 10/6/2023 at 12:53 PM, IB31 said:

Also is the linear and electrical loss indicated is instatenous loss for an hour or a total loss for a day (21-12-22)?

This is the loss on one day (the selected day).

On 10/6/2023 at 12:53 PM, IB31 said:

Does the shading factor tables represents a particular day (21-12-22) or its gives the total/Average loss for the entire year.

No, the shading factor table represents the loss for a particular sun direction. There is no temporality involved.

On 10/6/2023 at 12:53 PM, IB31 said:

Can the shading table loss (linear)be converted to equivalent electrical loss values.

It cannot be easily converted, you need to run the simulation to convert it to a yearly loss.

On 10/6/2023 at 12:53 PM, IB31 said:

The azimuth in the shading factor table represents the azimuth of the solar panel or the solar azimuth angle( east -west).

It is the solar azimuth angle (negative for east, zero towards south).
 

[IB31]

On 1/4/2024 at 9:23 PM, Michele Oliosi said:

It cannot be easily converted; you need to run the simulation to convert it to a yearly loss.

Hi Michele.Thank for the clarification here. So does it mean that we cannot generate hourly electrical loss data from PVsyst and it would reflect only annual electrical loss in the loss diagram below

[dtarin]

Export the simulation to excel and you will have hourly data. Include the elec. loss according to shadings in the output. 

[Michele Oliosi]

2 minutes ago, dtarin said:

Export the simulation to excel and you will have hourly data. Include the elec. loss according to shadings in the output. 

Indeed, please look here https://www.pvsyst.com/help/output_file.htm you want the variable ShdElec

[IB31]

On 1/4/2024 at 9:23 PM, Michele Oliosi said:

No, the shading factor table represents the loss for a particular sun direction. There is no temporality involved

Thank you for clarification. Just looking for further clarification here

1. Since the values are avialble in 10/20 deg interval , how do we see the value at say 20 deg height .Is it the instaneous value at 20 or it is average of the values between 10 and 20 deg for any particular azimuth angle.

2. Does 'temporality' means the shading factor table is generic. Say for the value of 10 deg height and -20 deg azimuth (just before noon) the shading factor has some value which has no significance since towards noon sun height would always be altleast greater than 10 deg.Please correct me here.(I understand Iso shading diagram gives the location specific shading impact).

3. How do we interpret the single value of shading factor for diffuse and albedo at the end of the table.Does it represent avg value for all sun position in year.