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If the trip of overload branch may cause cascading tripping in corresponding section, emergency overload control should be executed to ensure the security of the transmission section and maintain its integrality and transmission capacity. A series of improvements against the conventional sensitivity algorithm are proposed, which include the advance of the(More)
Transformer is one of the most important elements in power system, and current differential protection has been the main protection technique for transformer unit. This protection technique, however, suffers a low sensitivity or reliability due to the problems such as CT saturation and transformer magnetizing inrush. Based on digital substation system,(More)
OFDM (orthogonal frequency division multiplexing)-based broadband power line communication offers reliable data transmission solution for smart grid and the “last mile” question. This paper presents a design and implementation on timing synchronization algorithm for PLC. A polyphase sequences sets based preamble is proposed which provide not(More)
Synchronized wide area communication has become a mature technology, which makes the real-time interaction between the substations and the wide area protection and control system possible. However, the present protection and control system to handle this real-time data has been recognized to be deficient. This paper begins by reviewing the development(More)
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