A field study of bus-fault transient recovery voltages

The estimation of system transient recovery voltages from system diagrams requires a determination of "effective" parameters. This is a study of 345 KV field data, produced by a current pulse test circuit, which shows the types of transient recovery voltage characteristic of both local sources, and local sources paralleled with remote sources. The test results are compared to calculated values, using techniques of the TRV application guide, ANSI Standard C37.0721-1971.