2000WPMmin

Minutes from P1564 - Task Force on voltage Sag Indices

Possible Action Item to handle IAS's concerns?

Methodologies Discussion

Dan Sabin - Electrotek - Presentation
Provided discussion on methodology.
Indices used now (Sag, Swell, Interruptions)
Monitoring equipment uses box car method
Presents data in curve formats, magnitude & duration (ITIC, SEMI, SARFI Indices)
System Benchmarking (Between customer/substations/utilities….)
Detroit Edison Method
Sag Score = 1 - 1/3(Va+Vb+Vc)
Eskom Methon
Voltage Dip Table
IEEE 1159.2 - Waveform Characteristics
Point-in-wave, transition angles, missing voltage, unbalance ration, harmonic distortion during disturbance

Definitions

1159

P1433 - Use as reference

1250

Summer Power Meeting - Seattle, WA

Meeting Ajourned