隨著當今社會迅速蓬勃發展，越多企業要求穩定之電力環境，尤其科技廠、石化廠或煉油廠等，一旦面臨斷電，不僅造成大量之半成品報廢，若停電時間過久導致馬達停止，更是延長全廠重新啟動之時間。而要有穩定之電力環境，就必須建置周全之發電廠，當發電廠中之發電機跳機到切換至備用發電機仍需一小段時間，會有短期電力供應不足情況，唯考量是否啟動其他更快發電之機組或進行卸載，都將影響國家經濟與民生。因此，若能有更快之電源切換系統，將可節省大量額外發電成本。
有鑑於此，本研究旨在提出一個針對快速切換系統之分析策略，且包含卸載策略之運用流程，利用EMTP電磁暫態模擬軟體，搭配自主研發之FBT模組、保護電驛模組與卸載模組，分析電源轉供瞬間之暫態電流電壓、評估過電流電驛是否跳脫與卸載策略之使用時機，方便相關工程人員真對不同案例調整快速切換系統切換模式之條件，降低現場試車時間與成本，提升電力可靠度與增進工廠運轉連續性。

Nowadays, more and more enterprises require the stable electricity. In petrochemical plants, or oil refineries especially, once the power outage occurs, lots of products will be scrapped and cost more time to restart the whole plant. When a generator in the power plant faults, it will take a short time to switch to a backup generator and there will be a short-term power shortage. The only solution is whether to start other generators or execute the load shedding. Both of these will affect economy and livelihood. Therefore, if there is a faster power transmission system, it will save many additional generator costs.
Based on that, this paper aims to propose an analysis strategy for fast bus transfer system with load shedding solution. Using EMTP, the self-developed FBT module, relay module and load shedding module to simulate the transient current and voltage, evaluate whether the overcurrent relay trips and analyze the use of load shedding strategy. For engineers, the proposed strategy is more convenient to design the conditions of Fast Bus Transfer in different cases. Not only reducing the time and cost of on-site test, the proposed strategy but also enhances the reliability of power supply and the continuity of factory operation.

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