故障電流限制器在船舶電力系統裝設位置之探討

Investigation of Allocation of Fault Current Limiters in a Shipboard Power System

故障電流限制器為一種常被用於陸上電力系統以避免故障電流超出斷路器遮斷容量之阻抗設備，或是用以提升其系統電力品質與可靠度之元件。因目前將故障電流限制器安裝於船舶電力系統用以抑制故障電流之實例較少，且因應節省減碳之趨勢，電力推船舶為未來船隻設計的方向，而促使本文探討此元件於船舶電力系統之適用性，並提出其安裝策略以決定適當裝設位置與阻抗值大小。為驗證所提方法之可行性，本文先以IEEE 30個匯流徘系統為例，並與其他文獻所得結果作比較，再以一艘500噸級巡防艦及一艘2700噸電力推進海洋研究船來實現所提裝設故障電流限制器之安裝策略，所得結果期能作為未來船的電力系統擬設計加入故障電流限制器之參考。 Generally, a fault current limiter (FCL) is an impedance component that is used to in stall in an electrical power system for preventing fault currents from exceeding fault clearance capacity of circuit breakers, or increasing the power quality and reliability of its power system. Since there are currently no practical examples of installing fault current limiters to suppress fault currents on a shipboard power system which may have become the preferred design for future ships to reduce carbon dioxide emissions, this motivates us to investigate the feasibility of applying the FCL into a shipboard power system and to find a proper allocation to install FCL with a corresponding impedance value To verify the feasibility of the proposed strategy for allocating the FCL, the IEEE 30-bus system is first studied and the method is then implemented into a 500 ton guided-missile patrol vessel and a 2700 ton oceanographic research vessel with electric propulsion. Hopefully, the results can be used as a reference for engineers to design a shipboard power system in the future.