利用電器使用模型與其電力特徵值之分析建立電力線拓撲資訊

Abstract

在做用電行為分析或各種電力系統相關研究時,傳輸電力的電線本身經常被視 為是不帶有任何阻抗的。但是實際上,電力傳輸線畢竟不是理論中的理想導線,且 其阻抗經常造成測量、分析上的誤差,間接導致應用於實際場域中的實驗結果不佳。 如非侵入式負載監測技術,在電器狀態的辨識上,就經常因線阻造成誤判。因此在 本研究中,我們試圖找出電力傳輸線的阻抗所帶來的影響、校正相關錯誤,並且進 一步利用分析這些被影響過後的數據來重建出電力線拓撲。我們建立一個線性規畫 模型,把因線阻影響而誤判的電器狀態做校正,然後比較這些被影響的數值與理想 值得差異找出其相關線阻值,與電器間位置的相對關係,最後把環境中的電力線拓 撲重建出來。

When analyzing energy usage or doing other power-system-relative researches, the wire that transfer electrical power are usually regarded as ideal electric conductor and with no impedance. However, in real life, the power-lines are not ideal after all, and their impedance frequently causes error in measurement or analysis, eventually leads to bad experiment result when using real data. For example, Non-intrusive load monitoring system often retrieves wrong answers in appliance recognition because of wire impedance. Therefore, in our research, we find out the influence of wire impedance, recover from relative errors, and propose a method that takes advantage of wire impedance to build power-line topology. We built a linear programming model which corrects the error appliance states that were caused by wire impedance. And we compare the influenced power characteristics with ideal ones to evaluate wire impedance value, obtain the relative position of appliances, and finally rebuilt the power-line topology.