PSSE Syntax Highlighting for Transmission Planners

This Visual Studio Code extension provides syntax highlighting for commonly used PSS®E file formats, helping transmission planners work more efficiently when editing model input files.

✨ Features

Supports syntax highlighting for the following file types:

• .idv – Batch Command Files
• .sub – Subsystem Definition Files
• .mon – Monitoring Definitions
• .con – Contingency Definitions
• .dyr – Dynamic Data Files
• .raw – Power Flow Raw Data Files

By adding rich syntax highlighting for these formats, this extension makes it easier to read, edit, and debug files involved in steady-state and dynamic modeling workflows.

🎯 Purpose

The goal of this extension is to:

• Streamline workflows for transmission planners
• Provide visual cues to reduce errors
• Improve readability for batch automation and data input files
• Encourage easier scripting and model file manipulation in PSS®E-based processes

🕓 Version History

Version Date Description

• 1.2.0 2025-08-07 Fix logo
• 1.1.0 2025-08-07 Adds support for @! comment syntax
• 0.0.1 2022-09-22 Initial release with core PSSE file highlighting

📦 Installation

Install directly from the VS Code Marketplace or by searching: psse syntax highlighting

🔧 Usage

Once installed, VS Code will automatically apply syntax highlighting when you open any supported file extension. No extra setup required.

🧠 Who Is This For?

Power system engineers

Transmission planners

Consultants working with Siemens PSS®E

Anyone editing .raw, .dyr, or .idv files regularly

💡 Contributing

Have suggestions or ideas to expand the highlighting support (e.g., .seq, .snp, or .cnv files)? Feel free to open an issue or pull request.

🛠 Known Limitations

This extension provides syntax highlighting only — it does not validate file formats or provide intellisense. Future releases may expand capabilities.

📜 License

MIT License

Built with ❤️ to support the power system planning community.