| Summary: | 碩士 === 國立高雄應用科技大學 === 電機工程系博碩士班 === 96 === With the voluminous distribution transformers and complexity of low voltage lines between transformer and the customer metering box, the traditional way to identify the connectivity of transformer and customers by disconnecting the customer service will raise serious complaints of power interruption. The objective of this thesis is to investigate the signal transmission characteristics of power line carrier (PLC) used in distribution systems. The PLC based testing system will be developed to support the identification of distribution transformer and all the customers served. The residential building, commercial and office building, the building mix of residential and commercial customers, are selected as the testing sites for PLC testing. With this testing system developed, distribution engineers can identify the connectivity of each distribution transformer and the customers, which can enhance the practicability of OMS system, the efficiency of outage restoration and the transformer load management.
This objective will also study the power line carrier signal transmission for Open Y-Open Delta of distribution transformers. A proper PLC chip will be selected and the circuits of signal coupling module, signal transceiver module are going to be integrated as a single PLC based testing unit. The factory testing will be conducted to verify the performance fine tune the PLC unit. After completing the testing, the field acceptance test of the PLC unit developed will be conducted to verify the effective-ness of the system for the identification of all customers served by each transformer. The PLC testing unit will provide a very effective tool for Taipower engineers to support the connectivity verification of transformer and customers, which will be very important to enhance the operation and maintenance of distribution systems.
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