The synchronous phasor measurement unit (PMU) based on global positioning system (GPS) which can directly measure the nodal voltage phasors is a new type of measurement device.

• 基于全球定位系统(Global Positioning System,GPS)的同步相量量测单元(Phasor Measurement Unit,PMU)是一种新型的量测装置,该装置可以直接量测节点电压相量。