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The centralized control of active distribution networks with large penetration of dispersed resources requires algorithms capable of providing network state estimation. Within this context, the measurement of bus voltage synchrophasors provides useful data that increase the observability of the network. The peculiar characteristics of distribution networks, such as feeder impedances, power flows and harmonic distortion, are different from those of transmission networks. Therefore, in order to obtain reasonably low uncertainty levels, Remote Terminal Units (RTU) with specific characteristics need to be developed. The paper presents an algorithm developed for the synchrophasor measurement in active distribution networks together with its implementation into a specific hardware based on a real-time microcontroller. The paper also presents the experimental characterization of the developed RTU by making reference to both single-tone and distorted signals. © 2009 IEEE.

This paper presents specific hardware and components which can be used to implement optimal control strategies via wireless communication channels to achieve path tracking. The position of the robot at each time instant Is found by implementing a localization algorithm. Simulations results are presented using robust and Linear Quadratic Gaussian (LQG) controller architectures. The overall aim of this research is the integration of the controller in a communication system where the sensor and/or reference information is transmitted via a channel with finite capacity. © 2008 IEEE. 946 951