Period

Data Acquisition

Recording Time

A

Collect the state data before the disturbance, output the original acquisition waveform

≥0.04 s

B

Collect the state data in the early stage of the disturbance, output the original acquisition waveform

≥0.1 s

C

Collect the state data in the middle stage of the disturbance, output continuous power frequency effective values

≥1.0 s

D

Collect system dynamic process data, output a power frequency effective value per 0.1 s

≥20 s

E

Collect dynamic data of the long process of the system, output a power frequency effective value per 0.1s

≥10 min