應用全球定位系統與零交越法量測輸電線路相位之研製

Implementation of Power Transmission Line Phase Measurement Using Global Positioning System and Zero-Crossing Method Global Positioning System and Zero-Crossing Method

李維哲(Wei-Zhe Li)

指導教授 ： 曾國雄

國立臺北科技大學/電資學院/電機工程系研究所/碩士(2013年)

https://doi.org/10.6841/NTUT.2013.00021

摘要

本論文以三個AT89S52實現以全球定位系統(GPS)與零交越點法作三相輸配電線路的相位量測技術，當GPS接收模組產生全球同步脈波時同時觸發三個AT89S52之內部計時器，接著透過三組零交越點偵測電路產生與模擬待測三相輸配電線路同週期之三相方波，並以其三相方波之正緣分別觸發停止三個AT89S52之內部計時器，將計算結果分別傳入其中一個AT89S52的暫存器，再以同一個AT89S52接收及擷取GPS的National Marine Electronics Association(NMEA)格式信號，最後整合其結果並輸出至電腦，而電腦端也以程式圖控介面(C++ Builder)轉換為角度值且顯示於螢幕上，讓使用者可直接從螢幕上得知所量測到的三相相位資料與接收時的日期時間資訊。本論文提出的方法可用較低成本完成三相相位量測，當中所使用的GPS訊號容易取得且安全，而成品電路的架構簡單，顯示結果的介面多功能且易懂，方便操作者使用。

關鍵字

全球定位系統 ； 零交越法 ； 相角量測 ； AT89S52

並列摘要

This thesis probes into the phase measuring technique based on GPS and zero-crossing as three-phase transmission and distribution lines by using three AT89S52. The internal timer in the three AT89S52 is simultaneously triggered when the GPS receiver module generates global sync pulse. Then three zero-crossings will detect circuit generation and simulate to-be-measured three-phase square wave in the same cycle of the three-phase transmission and distribution lines. The rising edge of the three-phase square wave will trigger the internal timer of the three AT89S52 to stop, and then the computed result will be sent to the register in one of the AT89S52. The AT89S52, of which the register stores the result, will later receive and fetch GPS signals in National Marine Electronics Association (NMEA) format, integrating the data and sending the result to computer. The result will be converted into angle by C++ Builder and shown on screen, letting users read the measured three-phase data and time information when the data is received. The methodology proposed in this research can lower the cost for three-phase measuring. Moreover, the GPS signals used in this thesis are easily accessible and secure, and the framework of the completed circuit is simple while the multi-functional interface for result presentation is also user-friendly.

並列關鍵字

Global Positioning Systems ； Zero-Crossing Method ； Phase Measurement ； AT89S52

參考文獻

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