Solar Inverter Data Parsing and Storage

This repository contains code for interfacing with various solar inverter devices and logging their data to a centralized database. The code handles communication with different types of solar inverters and loggers, parses their measurements, and performs data validation and filtering.

Overview

The code is designed to work with the following devices:

1. ABB PVS800 Central Inverter - Communicates via Modbus TCP.
2. Statcon Energiaa SMB-096 Combiner - Communicates via Modbus RS485/RS422/RS232.
3. SMA Sunny Web Box Logger - Communicates via HTTP requests.

Features

• Data Retrieval: Fetches real-time measurements from solar inverters and loggers.
• Data Parsing: Converts raw measurement data into readable formats.
• Data Validation: Applies thresholds to ensure data integrity and relevance.
• Error Handling: Manages communication errors and data inconsistencies.

Installation

To use the code, ensure you have the following Python libraries installed:

pip install minimalmodbus pyModbusTCP requests

Device Interfaces

ABB PVS800 Central Inverter

The inverterPVS800 class interfaces with the ABB PVS800 Central Inverter via Modbus TCP. It handles data retrieval, parsing, and validation.

Constructor:

• Initializes measurement labels, register addresses, and factors for the inverter.

Methods:

• attach(identity): Connects to the inverter using the provided IP address and threshold values.
• detach(): Disconnects and resets internal state.
• measure(): Retrieves measurements from the inverter.
• filter(): Validates measurements against thresholds.
• read(measurementIndex): Returns the measurement value for a given index.
• cancel(): Resets measurements and validity.

Statcon Energiaa SMB-096 Combiner

The combinerSMB096 class communicates with the Statcon Energiaa SMB-096 Combiner via Modbus RS485/RS422/RS232.

Constructor:

• Initializes measurement labels and factors for the combiner.

Methods:

• attach(identity): Connects to the combiner using port name, baud rate, and slave address.
• detach(): Disconnects and resets internal state.
• measure(): Retrieves measurements from the combiner.
• filter(): Validates measurements against thresholds.
• read(measurementIndex): Returns the measurement value for a given index.
• cancel(): Resets measurements and validity.

SMA Sunny Web Box Logger

The loggerSunnyWebBox class interfaces with the SMA Sunny Web Box Logger via HTTP requests.

Constructor:

• Initializes measurement labels and address for the logger.

Methods:

• attach(identity): Sets up the logger URL.
• detach(): Resets internal state.
• measure(): Fetches and parses data from the logger's web interface.
• read(measurementIndex): Returns the measurement value for a given index.
• cancel(): Resets measurements and validity.

Usage

To use the classes:

1. Instantiate the class for the device you want to interface with.
2. Attach the device using the attach() method with appropriate connection details.
3. Retrieve measurements using the measure() method.
4. Filter measurements using the filter() method (if necessary).
5. Read specific measurements using the read() method.
6. Detach the device using the detach() method when done.

Example usage:

# Example for ABB PVS800
inverter = inverterPVS800()
inverter.attach({'threshold': {...}, 'IPAddress': '192.168.1.100'})
inverter.measure()
data = inverter.read(1)  # Read the first measurement
inverter.detach()

Contributing

Contributions to improve the code, add new features, or fix bugs are welcome. Please follow the standard Git workflow for contributions.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Contact

For questions or support, please contact surya13493@gmail.com.