نتایج جستجو برای: phasor measurement unit
تعداد نتایج: 805314 فیلتر نتایج به سال:
For power networks such as the Nordic Grid, that have operation constraints limits imposed by the existence of low-damped electromechanical oscillations, the estimation of electromechanical mode properties is of crucial importance for providing power system control room operators with adequate indicators of the stress of their network. This article addresses the practical application of differe...
Large power system disturbances and their consequences, represent a challenging problem for the power industry and especially for the network system operators, the ones who are responsible for the network operation at large, its security and reliability. This fact has reinforced interest in the new generation of monitoring systems with the aim to gain if possible a precise and maximum knowledge...
Phasor Measurement Unit Placement aims to decrease the cost this phasor equipment while maintaining observability of electrical distribution systems. This placement can be modeled as a set covering problem. Synchronized data provides systems’ information with higher quality and frequency than Remote Terminal Units. These enable implementation faster real-time state estimators. Thus, supervisory...
The practical implementation of phasor measurement unit (PMU)-based fault location in high-voltage overhead lines presents a number difficulties including the significant impact DC components current wave-form and residual magnetization transformer. Synchrophasor technology was only meant to capture steady states electromechanical transients. issues mentioned above indicate need for changes syn...
An alternative and simplified procedure is described to estimate the longitudinal resistances of transmission lines based on the real-time load profile. This method proposes to estimate the resistance parameters from the synchronized measurements of complex currents and complex voltages at the sending and receiving ends of transmission systems. The synchronized measurements can be in practice o...
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