摘 要 不斷電系統、整流器、變頻器等等之非線性負載在現代化工廠中已是不可或缺之設備,但其衍生之電力諧波問題,卻每每使得設備誤動作,電力電容器燒毀,造成工廠之重大損失。 本論文透過負載量測,建立工廠配電系統之Y矩陣,再求其反矩陣Z矩陣,利用實測得知之諧波電流,去模擬在不同濾波器之投入狀況下系統之諧波電壓分佈狀況,以求出系統之最適用濾波器設計,並提供工廠之電力系統操作及維護人員,推算出配電系統中可能發生之諧波問題點,進而避免電力諧波在系統中共振之危害,以防止事故之發生。 本文所研究之步驟,方法及成果,希望對工廠之能源管理員及設備負責人,提供一些有益之參考及事故處理之方法及方向。
Abstract Nonlinear loads, including the un-interruptible power supply and converter, etc, are essential equipments in the modern factories. However, these nonlinear loads lead to facility malfunction and capacitor damage. The harmonics cause severely unexpected loss. This thesis is based on the load measurement to establish the Y- matrix of the factorial power system, and then calculates the corresponding Z matrix. The thesis uses the harmonic current measured from the power system to simulate the harmonic voltage distribution of the system with different filters, in order to find the most appropriate filter design, which tends to prevent the system from the resonance. In order to attain the optimal filter design for the system, the proposed method and the result of this thesis might provide useful references and approaches to deal with incidents for engineers.