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A simple and compact optical fiber relative humidity (RH) sensor based on SiO2 nanoparticles has been proposed and experimentally demonstrated in this paper. S-taper fiber is fabricated as the sensitive element using simple fusion spicing and the S-tapered region is coated with a layer of hydrophilic material by direct immersion into the SiO2 nanoparticle solution. The resonance wavelength as well...
This paper implements a long term VAR planning algorithm developed earlier, which coordinates between network investments that most effectively address steady-state voltage instability and those which most effectively address transient voltage dip problems under severe contingencies. The algorithm is applied on a portion of a large scale system consisting of 16173 buses representing the eastern interconnection...
This paper tests a long term VAR planning algorithm, developed earlier to counter steady state voltage instability issues under severe contingencies, on a portion of a large scale system model consisting of 16173 buses representing Eastern interconnection. The planning method is a mixed integer programming (MIP) based optimization algorithm that uses sensitivity information of performance measures...
This paper proposes a new optimization based algorithm to plan the minimum amount of switched shunt and series capacitors to restore the voltage stability of a power system after severe contingencies. Through parameterization of severe contingencies, the continuation method is applied to find the critical point. Then, the backward/forward search algorithm with linear complexity is used to select candidate...
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