| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程系 === 92 === The green energy is the future energy of the most urgent and development potentialities this century. It is also the charting direction and policy of energy development in our country. Because it possessed all characteristics such as dispersing, unstable and small-scale, combined with geography and economic factors; according to foreign countries development experience, it is most suitable incorporate into the distribution system.
At the present, the mainly type of distribution system are open-loop and radial in our country. However the close-loop type with good power supply reliability is in the construction progressively. To cause assaulting to protected system, after the dispersed generations joined the distribution system. At the present, technology and scale of wind-power generation are the ripest in dispersed generations. The main purpose of this thesis is to utilize Matlab/Simulink software research system protection of distributed wind generation embedded close-loop type distribution networks with the nature of degree of difficulty and complexity higher.
At first, we construct relevant relay module that network analysis need, and discussed the influence of current transformer saturation. The feeders, buses and laterals of close-loop distribution system use Intelligent Electronic Device (IED) for system protection. When put wind generator into close-loop system utilized instantaneous and time over current relay (50/51), time under and over voltage relay (27/59) and phase directional power relay (32) to plan system protection. Finally, use ETAP software planning the curves and parameters of protection and coordination. Using Matlab/Simulink software simulate the dynamic waveform before the fault, at the time of the fault and after the fault. The result proved that the trip time of relay accorded with the regulations of Taiwan Power Company and the standard IEEE Std 1547-2003.
|
|---|
