智慧電網的主要宗旨是提供一個可靠，安全，且環保的電力系統，但是因為他連接到了相當多的再生能源，使的電力品質事件發生的機率大福的上升。因此我們著重在使用多個感測器去快速的偵測到事件的發生，但是在眾多的感測器中會有壞的感測器且會影響到決策中心所做出的決策，特別是在當感測器到決策中心之間的通道頻寬是有限的時候，我們透過編碼去作快速偵測來對抗這些壞的感測器。
我們提出了一個新的方法建立在隨時間交換編碼簿上去減少偵測延遲的時間並避免掉假警報的發生。

The goal of smart grid is to develop a more reliable, secure,
efficient, and environmentally friendly power grid. Unfortunately,
power quality (PQ) events are easier to happen due to the insta-
bility of the renewable energy in smart grid. We thus focus on the
quickest detection of the PQ events in smart grid, with aids of
multiple smart meters. However, some meters may be faulty, and
misleading the decision at the fusion center. To combat the faulty
meters, especially when the bandwidth between each meter and
fusion center is insufficient, we proposed code-based fault toler-
ant classi cation for quickest detection. A new scheme based on
codebook switching is developed, which can shorten the detection
delay with zero false alarm probability.

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