CAISO Update JSIS Meeting March, 2015

Infrastructure 92 Connected PMUs 64 Substations 7 PDCs reporting (BPA, PG&E, SCE, SDG&E, APS, SRP and NVP) Redundant PDCs/Servers – 5 PDCs connected to both sites Redundant PI servers for real-time historian

Data Management Streaming data in C at 30 frames/sec. Archiving – PI Historian – 90 Days – 30 f/s – Raw Phasor Data (redundant, dedicated to synchrophasors only) – PI Historian – Calculated Data – Down-sampled (redundant production PI Servers/collectives) – Long term storage (less expensive) – Comtrade – 3 years plus all events

Engineering Applications Angle Difference - sent to EMS Backup Frequency Source – sent to EMS MW Flow – Backup for Tie Line measurement – sent to EMS Post-Event Analysis Dynamic Model validation – DSA model verification Benchmarking – comparison to SE for Kv and angle  ’s

Control Room Applications Phase Angle Difference on EMS one-line displays Island Detection Frequency Event Detection Event analysis/locator (Future) Oscillation detection (Future)

Expectations from WISP, JSIS, NASPI Data availability and quality information, support with PMU issues Exchange of tools and applications Exchange of lessons learned – Installations, applications, data management, etc.