Study of Photovoltaic Generation Penetration in a Small Off-shore Island Power System

• Main Authors: CHANG,HONG-BAO, 張宏葆
• Other Authors: HSU,CHENG-TING
• Format: Others
• Language: zh-TW
• Published: 104
• Online Access: http://ndltd.ncl.edu.tw/handle/59284554372947460887

碩士 === 南臺科技大學 === 電機工程系 === 103 === This thesis investigates the maximum photovoltaic generation system(PVGS) installation capacity by considering the load flow analysis and transient stability analysis for a small scale island power system. The Chi-Mei Island is selected for computer simulation. First, the power system topology, generator’s models and load are collected in detail. Then the one-line diagram and the associated generator control model are set up in the Cyme Psaf program. Furthermore, this paper also collects the power output of an existing PVGS and related climate data for statistical analysis. It is therefore to know the ramp rate of the PVGS and to propose a PVGS model based on the regression analysis method. Many various load flow analyses are executed with and without considering the connection of PVGS. The voltage variation ratio(VVR) is obtained according to the simulation results. After that, a power controlled strategy of smart inverter is applied to reduce the VVR. The penetration of PVGS can be increased significantly by the proposed method. Then the transient stability analysis is executed with considering the tripping and power variation with various ramp-rates of PVGS. The dynamic response of diesel generators, voltages and system frequency are examined carefully. It is therefore to obtain the maximum installation capacities of a single and total PVGS without violating the lowest frequency limit. The execution of this thesis can improve the penetration of PVGS. It is very helpful to the development of sustainable energy.