Abstract
The intelligent substation relay protection facility is a fundamental element in construction of modern power system, based on the principles of flexibility, security and accuracy, and it can be divided into process layer and substation layer according to specific equipment. The former is suitable for individual sampling of disposable equipment, can be separated from the base station synchronization sampling, with the help of synchronous digital system and ping-pong algorithm to achieve synchronization of the overall sampling, that is to take the distribution protection components, through the separate transmission medium to realize the information transmission; the latter is for variable power plant components centralized backup protection, taking online real-time tuning technique.
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