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Synchrophasor measurements, as obtained from phasor measurement units (PMUs), of power system frequency, voltages, and currents provide several important capabilities beyond the traditional 4-second substation data used in the energy management systems of control centers. These properties include precise time tagging of the measured data using GPS signals, high sampling rate at 30/50/60 samples per...
Although much of today's power system remains steady, the integrations of wind power make a portion of the system become fluctuant. To monitor these fluctuations, we need to utilize phasor measurements and shorten the time interval for state estimation. On the other hand, however, this means huge increase in computation burden. As a tradeoff between accuracy and computation efficiency, a multi-time...
This paper presents a solution for the optimal placement of branch PMUs (PMUs that measure a single set of three-phase voltage and current phasors) considering specific measurement redundancy requirements for the observability of buses. The classical bus observability condition in optimal PMU placement assumes the measurement of currents of all lines connected to the PMU bus, making most developed...
This paper introduces a method to generalize the Active Impedance Estimation (AIE) fault location method for Shipboard Power Systems (SPS.) In the proposed method short-duration high-frequency voltage sources are employed at selected buses and voltage/current measurements are taken at specific shipboard power system busses and the effect of the applied sources are observed for the purpose of fault...
This paper investigates the bad data detection issues in power system state estimation considering SCADA and PMU measurements. The traditional State Estimator (SE) containing only SCADA measurements, two One Phase SEs and one Two Phase SE are evaluated. The SEs are assessed by considering measurements containing gross and gaussian errors and two classical methods for measurement standard deviations...
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