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標題: | 以嵌入式系統實作微型相量量測器 Developing Micro Phasor Measurement Unit (μPMU) Using Embedded System |
作者: | Yu-Cheng Lin 林育丞 |
指導教授: | 劉志文(Chih-Wen Liu) |
關鍵字: | 嵌入式系統,廣域量測系統,同步相量量測, Embedded system,Wide-area monitoring system,Synchrophasor measurement, |
出版年 : | 2013 |
學位: | 碩士 |
摘要: | 同步相量量測單元是在廣域量測系統中負責蒐集資料的設備,裝置在選取的匯流排上,對匯流排的三相電壓及電流取樣並進行相量的計算,且能夠接收衛星訊號,包括時間標籤及每秒一脈衝的訊號,以達到同步量測的能力。同步量測的資料可以用來即時地監測電力系統的狀況以在最快的時間內對發生的事故採取適當的措施,也可以非即時地作為故障後的研究資料以分析事件的成因,進一步地達到預防的效果。然而此設備具有價格昂貴的缺點,這也是其自開發成功以來一直難以迅速普及的原因;且若要建立一個監測整個電網的廣域量測系統,使用具有簡易安裝特性的儀器勢必會比傳統的相量量測單元要來得快速,且佈下的量測器可以更多。本論文的目標即是開發具有可以低價格大量生產,且直接以市電為取樣源的量測器。而適合開發的硬體經過評估後選用數位訊號處理器的嵌入式系統,其具有優良的運算能力,且提供大量的周邊硬體以供實作。
關鍵字: 嵌入式系統,廣域量測系統,同步相量量測。 Synchronous pahsor 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 from 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 nonreal-time applications, researchers analyze these data to find the cause of the event in the hope of preventing similar events from reoccurring. Nevertheless, its high price is a significant drawback which impedes its spread. Moreover, when constructing a wide-area monitoring system which monitors the entire power system, devices with easy-to-install characteristic are expected to accelerate the development. And the number of installed measurement units can be even larger. The goal of this research is to develop a mass-producible measurement device which directly samples the voltage from electrical outlets. After some consideration, embedded system with digital signal processor is chosen as the development platform for it performs very well in computing and provides various peripherals. Key words: Embedded system, Wide-area monitoring system, Synchrophasor measurement. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/61025 |
全文授權: | 有償授權 |
顯示於系所單位: | 電機工程學系 |
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ntu-102-1.pdf 目前未授權公開取用 | 3.02 MB | Adobe PDF |
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