IEEE C37.111-1991

IEEE C37.111-1991 defines the common format for transient data exchange, known as COMTRADE, within power systems. It provides a structured way to record and share disturbance and event data from electrical networks, helping engineers compare information from different devices and studies. For power, energy and industry applications, IEEE C37.111-1991 supports consistent handling of waveform and event records, which can improve analysis, troubleshooting, and coordination across equipment and teams.

What is IEEE C37.111-1991?

IEEE C37.111-1991 is a technical standard for the COMTRADE data format used to exchange transient records in power-system environments. It establishes a common approach to representing disturbance data so it can be read and interpreted more consistently across tools and equipment. As a standards document, it is especially relevant where event capture, fault analysis, and engineering review depend on reliable data interchange rather than proprietary formats. This makes IEEE C37.111-1991 useful for standardized data exchange in electrical studies.

Where is IEEE C37.111-1991 used?

IEEE C37.111-1991 is commonly used in power-system protection, disturbance recording, and post-event analysis workflows. It is relevant to systems that capture transient waveforms from substations, generating stations, and other industrial electrical installations. Engineers may use it when reviewing relay operations, fault events, or recorded signals from monitoring equipment. Because it defines a common exchange format, the standard helps connect data from different recording devices and analysis software used in power and energy applications.

Why is IEEE C37.111-1991 important?

IEEE C37.111-1991 matters because consistent transient data exchange reduces confusion when comparing records from different sources. In practice, a common format supports more dependable analysis, easier procurement of compatible tools, and better control over engineering workflows. It can also help reduce risk during troubleshooting by preserving data in a form that is easier to share and review. For organizations working with power-system events, the standard supports repeatable handling of disturbance information and clearer technical communication.

• COMTRADE transient data format
• Power-system disturbance records
• Event and fault analysis
• Data exchange between tools