Smart Inverter Applied to Voltage Control of Distribution Feeder with Photovoltaic Generation

• Main Authors: Tian-Shin Chao, 趙天新
• Other Authors: Chi-Jui Wu
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/9qv9h4

碩士 === 國立臺灣科技大學 === 電機工程系 === 107 === This thesis studies the reactive power control method and design of photovoltaic smart inverter, and implementation in distribution system with multiple photovoltaic generations to improve the voltage issue. This study uses MATLAB/Simulink to establish a distribution system model. In order to make the smart inverter accurately control the real power and reactive power sent by the photovoltaic source, the phase-locked loop is used as the infrastructure to design the reactive power control mode with centralized and decentralized control, and to improve the problem of compensating for hunting. A representative distribution feeder example system for simulation and analysis is established, and finally integrate parallel capacitors, feeder regulators and smart converters to explore the coordination between equipment are integrated. In order to probe the effect of voltage control, the situation of solar power generation in sunny, cloudy and rainy days are simulated, 24-hr load of summer residential type is used, the full-day voltage status and smart inverter compensation situation are observed. Finally, the proposed setting method for the smart inverter is expected to provide practical operation benefits.