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In a microgrid with distributed generation (DG) units, proper control of the grid interfacing inverter is critical to facilitate safe and stable operation of the system. The droop control mechanism is a widely accepted control method in a microgrid operation. However, a droop controller is unable to provide inertia support in such systems, and thus, cannot contribute in primary frequency control during...
With increasing renewable distributed generation (DG) units connected to utility power grids, deterioration of power quality at the point of common coupling (PCC) becomes a major concern. Power electronic devices in DG units generate harmonics, these harmonics along with harmonics from other nonlinear load in the system might cause excessive harmonic distortion at the PCC. In this paper, an extensive...
Due to the varying and intermittent nature of wind resource, grid-connected wind farms pose significant technical challenges to power grid on power quality and voltage stability. Wind farm Q–V characteristic curve at the point of interconnection (POI) can offer valuable information for voltage control actions and provide essential indication about voltage stability. Data-driven analytics is a promising...
Due to varying and intermittent nature of wind resource, grid connected wind farms pose significant technical challenges to power grid on power quality and voltage stability. Wind farm Q-V characteristic curve at the point of interconnection (POI) can offer valuable information for voltage control actions and provide essential indication about voltage stability. Data driven analytics is a promising...
Many rural communities are not able to access the main power grid supply due to high cost associated with grid extension. The stand-alone renewable energy based hybrid power system is a significant adaptation to cope with increasing power demand along with environmental consideration in rural communities. In such a system, determining the correct size and capacity of renewable generating units to...
The virtual synchronous machine (VSM) method is a power electronics based approach which was first introduced by Beck and Hesse in 2007 for renewable energy integration modeling. This method controls grid-connected renewable energy sources as electromechanical synchronous machines, which makes renewable energy sources behave as conventional power generation stations if viewed from the power grid....
The impact of High voltage direct current (HVDC) transmission on power system dynamic stability is mainly discussed in this paper and the system dynamic response is analyzed under small disturbance. The establishment of linearized model of a single machine infinite bus (SMIB) system equipped with Voltage source converter (VSC) based HVDC is also presented in this paper. Generally, power system dynamic...
Immense improvement in power system stability can be achieved by the inclusion of Voltage Source Converter (VSC) based Back to Back (BtB) HVDC in the system. In this paper, a single machine infinite bus (SMIB) power system incorporating VSC based BtB HVDC is considered for dynamic stability assessment and linearised model of the system is presented. The system dynamic response is analyzed under small...
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