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The wide area monitoring system (WAMS) is considered a pivotal component of future electric power grids. As a pilot WAMS that has been operated for more than a decade, the frequency monitoring network FNET/GridEye makes use of hundreds of global positioning system-synchronized phasor measurement sensors to capture the increasingly complicated grid behaviors across the interconnected power systems...
In this paper, a theory is developed that relates the natural response of an electric power system to sudden outages of transmission elements. The key development is in determining, via state-space analysis, the anticipated spectral content of either frequency or phase angle measurements as observed immediately following the sudden outage. This theoretical development mainly focuses on frequency measurements...
Traditionally, Phasor Measurement Units (PMUs) have utilized signals obtained from current transformers (CTs) to compute current phasors. Unfortunately, this requires that CTs must be directly connected with buses, transformers or power lines. This paper will introduce an innovative phasor measurement instrument, the Wireless Frequency Disturbance Recorder (Wireless FDR), which uses the magnetic field...
The frequency monitoring network (FNET) provides a low-cost, easily deployable method for wide-area monitoring. FNET has the capability to realize long term, high density and continuous monitoring of large interconnected power systems. In effect, there are potentials for ground-breaking research on wide-area monitoring and control. In this paper, low frequency oscillations in the Eastern Interconnection...
This paper reports the initial results on low frequency oscillation monitoring and analysis combining practical measurements from an Internet-based frequency monitoring network (FNET) and simulations. Typical oscillation characteristics excited by various disturbances are shown using simulations and real measurements. The corresponding time-space dynamic propagation patterns are also provided. The...
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