广域测量系统(WAMS)-system architecture Reporting Hierarchy PDC-Phasor Data Concentrator Human Monitoring /EMS 1 sec 1 Phasor/Sec National Operation High-speed Regional Decisions Operation 100 ms-1S time frame 1-15 Phasors/sec PDC Very High-speed Decisions PDC PDC 10-100 ms time frame 20-60 Phasors/ Sec PMU PMU PMU PMU PMU PMU PMU PMU PMU 5 92 GE Consumer Industrial电力系统广域测量与控制四川省重点实验室 广域测量系统（WAMS）-system architecture