IEEE DRAFT 1344 : D7.2 AUG 95

1 Overview
    1.1 Scope
    1.2 Purpose
    1.3 Need for Standard
2 References
3 Definitions
4 Sources of synchronizing signals
    4.1 Requirements for a synchronizing source
    4.2 Broadcasts from satellites
    4.3 Broadcasts form a central location
5 Synchronization
    5.1 UTC synchronization
    5.2 Phase-locked sampling pulses
    5.3 Time input
    5.4 Time-tag for data samples
    5.5 Time-tag for phasors
6 Message format
    6.1 Transmitted messages
    6.2 Data frame
    6.3 Header frame
    6.4 Configuration frame
    6.5 Received messages
ANNEXES
Annex A Bibliography (informative)
Annex B Measurement accuracy and precision of
         synchronization (informative)
Annex C Time tagging the phasors (informative)
Annex D Supporting information for synchronized phasor
         data (informative)
Annex E Sources of synchronization (informative)
Annex F Time and synchronization formats (informative)
Annex G Alternative synchronization methods
         (informative)

Details of synchronized phasor measurement systems in substations. It addresses synchronization of data sampling, data- to-phasor conversions, and formats for timing input and phasor data output from a Phasor Measurement Unit (PMU). It does not specify response time, accuracy, hardware, software, or a process computing phasors.