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As solar energy continues to increase in the current power grid, the reactive power support capability from photovoltaic grid-tie inverters may be used to regulate feeder voltage and reduce system losses on medium- and low-voltage distribution systems. The focus of this paper is to develop a smart-grid-enabled control algorithm that will determine the amount of reactive power injection or absorption...
An analytical approach for islanding detection is proposed in this paper, which relies on analyzing the active power verses voltage (P-V) droop of the DG and the islanded load. Antiislanding techniques are typically designed and tested on constant RLC loads, don't take into account the frequency dependent loads. The behavior of the frequency dependent ZIP-exponential static loads during islanding...
Sandia frequency shift (SFS) falls under the active islanding detection methods that rely on frequency drift to detect an islanding condition for inverter-based distributed generation. Active islanding detection methods are commonly tested on constant RLC loads where the load's active power is directly proportional to the square of voltage and is independent on the system frequency. Since the SFS...
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