PV Plant Performance Ratio (PR) and Global Horizontal Irradiance (GHI) Analysis

Overview

This project processes and visualizes the daily Performance Ratio (PR) and Global Horizontal Irradiance (GHI) data of a photovoltaic (PV) plant. The goal is to analyze the plant's performance over time, comparing it against a dynamically calculated budget line and visualizing key trends.

Dataset

The raw data consists of two parameters:

• PR (Performance Ratio): Tracks daily PV plant performance; higher values indicate better performance.
• GHI (Global Horizontal Irradiance): Tracks daily solar irradiation; higher values indicate sunnier days.

The data is organized by year-month and parameter in separate folders.

Data Processing

• The script reads all CSV files from the PR and GHI directories.
• It merges the data into a single CSV file named single_csv.csv with columns: Date, GHI, and PR.
• The processed data contains 982 rows (daily records).

Visualization

• The visualization script generates a scatter plot where:
  • The x-axis is the date.
  • The scatter points show daily PR values.
  • Points are color-coded based on GHI ranges:
    • < 2: Navy blue
    • 2 - 4: Light blue
    • 4 - 6: Orange
    • > 6: Brown
  • A red line shows the 30-day moving average of PR.
  • A dark green budget line shows a decreasing target PR value annually (not hardcoded).
  • The plot also highlights points above the budget and shows average PR values for various recent periods.