COMTRADE Analyzer Workbench: in-browser disturbance record review
The COMTRADE Analyzer Workbench is an in-browser viewer and analyzer for IEEE C37.111 COMTRADE disturbance records. It loads CFG and DAT files locally, plots analog and digital channels, and supports phasor and sequence review as well as derived channels. It also produces fault review reports to help document relay and recorder events.
Who it is for
It is built for protection, commissioning, and fault-review engineers who need to inspect disturbance records, verify relay operation, and reconstruct events without installing desktop software.
Inputs and outputs
- Inputs: COMTRADE CFG and DAT files (HDR optional).
- Outputs: analog and digital channel plots, measurements, and an exportable fault review report.
Typical use cases
- Disturbance and fault record review.
- Relay operation verification.
- Event reconstruction and documentation.
What it does not do
It does not replace the relay or DFR manufacturer's event analysis software, and it does not certify compliance with any standard. Results support, not replace, engineering judgment.
Privacy: This tool runs entirely in your browser. Files you load are processed locally on your computer and are not uploaded to a server.
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Frequently asked questions
- What is a COMTRADE file analyzer?
- A COMTRADE file analyzer reads IEEE C37.111 disturbance records, made up of a CFG configuration file and a DAT data file, and plots the recorded analog and digital channels so you can review a relay or recorder event. This tool runs in your browser and supports phasor and sequence review, derived channels, and exportable fault review reports.
- Are CFG and DAT files uploaded to a server?
- No. Files you load are processed locally on your computer in the browser and are not uploaded to a server.
- Can this tool export an engineering report?
- Yes. You can produce an exportable fault review report capturing channel plots and measurements to support event documentation.
- Does this replace relay manufacturer software?
- No. It does not replace the relay or DFR manufacturer's event analysis software. Results support, not replace, engineering judgment.
- What protection engineering tasks does this support?
- It supports disturbance and fault record review, relay operation verification, and event reconstruction for protection, commissioning, and fault-review engineers.
- What is the COMTRADE (IEEE C37.111) format?
- COMTRADE (Common Format for Transient Data Exchange), defined by IEEE C37.111, is a standard file format for exchanging transient and disturbance records from relays and digital fault recorders. A record typically includes a CFG configuration file and a DAT data file.