In this paper, we introduce a distributed secondary voltage and frequency control scheme for an islanded ac microgrid under event-triggered communication. An integral type mechanism is proposed by which each generator (DG) periodically checks its triggering condition determines whether to update inputs broadcast states neighboring DGs. contrast existing strategies on of microgrids, the able han...

Structural health monitoring (SHM) involves continuous monitoring of a structure’s condition with near real-time analysis of sensed data. The emerging wireless sensor network (WSN) technology enables distributed data acquisition and processing for structure monitoring applications, which currently adopt a centralized solution, using a network of intelligent sensors. We design a robust WSN-based...

We consider a network model where the nodes are grouped into a number of clusters and propose a distributed dynamic frequency allocation algorithm that achieves performance close to that of a centralized optimal algorithm. Each cluster chooses its transmission frequency band based on its knowledge of the interference that it experiences. The convergence of the proposed distributed algorithm to ...

In this paper, we propose a novel coding for long range Brillouin Optical Time Analysis (BOTDA) distributed sensors based on a combination of time and frequency pulses, resulting in an additional coding gain of √2 with respect to traditional intensity-modulated codes. The generation of frequency-chirped pseudo-arbitrary pulses in return-to-zero (RZ) format with a Direct-Digital Synthesizer (DDS...

In this paper, we develop a general framework for studying distributed online frequency assignmentin cellular networks. The problem can be abstracted as a multicoloring problem on a node-weighted graph whose weights change over time. The graph, with nodes corresponding to network cells, is usually modeled as a subgraph of the triangular lattice and the instantaneous weight at a node models the ...

Frequency control is traditionally done on the generation side. Recently we have formulated an optimal load control (OLC) problem and derived a load-side primary frequency control as a primal-dual solution to OLC. The load-side control rebalances power and resynchronize frequencies after a disturbance but cannot restore the nominal frequency. In this paper we modify OLC and derive from it a fre...

A set of power generators and loads is considered a microgrid if, in comparison to larger power systems, they are smaller and have lower ratings and capacities. An islanded microgrid is a microgrid that is not connected to a larger power system. Generally, ac power systems have three main objections. First, they must always balance power generation with demand. Secondly, they must regulate freq...