電機資訊學院: 電機工程學研究所指導教授: 劉志文梁中明Liang, Chung-MingChung-MingLiang2017-03-062018-07-062017-03-062018-07-062015http://ntur.lib.ntu.edu.tw//handle/246246/276230Synchronous phasor measurement units (PMUs) are data acquisition devices utilized in wide-area monitoring systems (WAMS). They are installed at selected buses, sampling three-phase voltage and three-phase current to calculate the phasor. The capability of receiving Global Positioning System (GPS) signals such as time tag and 1- pulse-per-second signal synchronizes phasor data collected all over the power grid. Synchrophasors in real-time applications are used to monitor the status of the power system so as to, when fault occurs, enable operators to take proper measures as soon as possible. In non-real-time applications, researchers analyze these data to find the cause of the event in the hope of preventing similar events from reoccurring. Nevertheless, if failing to receive correct GPS signals in any case, PMUs are not able to be synchronized, and the acquired data are rendered valueless. Moreover, equip every PMU with GPS signal receiver will raise the cost. Hence, this research uses IEEE 1588 to achieve synchronization with cheaper computer network system, and has higher reliability than the ones depending on GPS systems.3800391 bytesapplication/pdf論文公開時間: 2017/8/20論文使用權限: 同意有償授權(權利金給回饋學校)廣域量測系統嵌入式系統同步相量量測IEEE 1588Wide-area monitoring systemEmbedded systemSynchrophasor measurementthesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/276230/1/ntu-104-R02921024-1.pdf