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This paper preliminarily examines the applicability of Internet protocol (IP)-related communication technologies such as IP and MPLS (multi-protocol label switching) routers and L2 (layer-two or Ethernet) switches to existing teleprotection systems. The teleprotection systems concerned include microprocessor-based current differential teleprotection with data communications of instantaneous current...
This paper puts forward a new method of channel monitoring for the optic fiber longitudinal differential protection. It involves following approaches: the differential protections at two ends of line communicate according to designed message frame format; calculate and store the communication channel delay of each message frame; estimate the stability of channel delay according to the criterion inequality,...
A principal factor in sensor network design is energy efficiency. In this work, we propose to extend the lifetime of sensor networks using appropriate choice of sensor node distribution. The key idea of our scheme is to deploy more nodes in areas of extensive energy usage. Using this scheme of sensor node distribution, we use probabilistic angular routing to route data packets from the sensor nodes...
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