本文主旨在建立一個直流微電網模擬測試平台,該系統包含了風力發電機、太陽能光電系統與燃料電池等分散式能源,鋰離子電池、超級電容器等儲能元件,以及三相市電換流器。該直流微電網模擬測試平台亦可用來開發以及驗證直流微電網之能量管理策略。 該系統中之三相市電換流器具備了低電壓穿越(Low Voltage Ride Through, LVRT)的功能,當市電端因為電力系統發生故障(人為因素或是天災),導致市電端電壓跌落時,直流微電網依然能與市電併聯正常運作。 此模擬測試平台以數學模式描述各分散式電源及儲能元件特性,並以電腦軟體Matlab/Simulink建立等效模型,來進行直流微電網之模擬。
This test bed is built by mathematical models in Matlab/Simulink. It is a platform for users to clearly handle the information of the DC micro-grid. This thesis presents a DC micro-grid simulation platform which can help designers to decide the capacity of energy storage components of micro-grid, and develop the energy management strategy for DC micro-grid. It can also help to verity the operational principle of DC micro-grid with/without AC grid. The three-phase grid-connected inverter is equipped with the LVRT (Low Voltage Ride Through) capability. A human-machine interface is built in LabVIEW which is a platform for users to clearly handle the information of the micro-grid. Some examples are shown in this thesis.