IEEE C37.111-1991

The rapid evolution and implementation of digital devices for fault and transient data recording and testing in the electric utility industry has generated the need for a standard format for the exchange of such data for use with various devices to enhance and automate the analysis, testing, evaluation, and simulation of the power system and related protection schemes during fault and disturbance conditions.

This standard defines a common format for the data files and exchange medium needed for the interchange of various types of fault, test, or simulation data.

New IEEE Standard - Superseded. A common format for the data files and exchange medium needed for the interchange of various types of fault, test, or simulation data is defined. Sources of transient data are described, and the case of diskettes as an exchange medium is recommended. Issues of sampling rates, filters, and sample rate conversions for transient data being exchanged are discussed. Files for data exchange are specified, as is the organization of the data. A sample file is given.