| Summary: | 碩士 === 國立高雄應用科技大學 === 電子工程系碩士班 === 103 === As technology advances, electric users claim more stable Electric Power Quality. However, Taiwan Power Company often suffers electrical accidents which may cause instable voltage supply. It leads to malfunction and breakdown of factory facilities and household appliances. In the present study, various abnormal voltage cases such as Phase Order, Less Phase and Bad Neutral Line were firstly explained. The cause exploration of failure is good for finding measures to prevent accident. In addition, this study presents a design of the analog module for Over-Voltage protection, including 1Φ3W, 3Φ3W and 3Φ4W. The schematic of Protection Module and the principle of design structure are provided as well. Finally, the System of Electrical Safety for handling Abnormal Voltage supply, Overload protection and emergency warning were carried out. The major structures such as Data Acquirement, Communication Module, Data Processing Module and Power Module for Electrical Safety Module have been Planned and Designed. The Home Type Electrical Safety Module was tested and verified in laboratory to investigate the feasibility of system operation.
Keyword: Electrical Safety Module、instable voltage、Overload protection
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