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The proliferation of Distributed Energy Resources (DERs) in the Distribution Network (DN) has affected the optimal operation of the grid due to multiple technical issues such as voltage rise, reverse power flow, voltage unbalance, islanding etc. Therefore, optimal management of DERs is becoming a key research area to improve the system power quality. In this context, several active network management...
Increasing penetration level of photovoltaic (PV) distributed generation (DG) into distribution networks will have many impacts on nominal circuit operating conditions including voltage quality and reverse power flow issues. In U.S. most studies on PVDG impacts on distribution networks are performed for west coast and central states. The objective of this paper is to study the impacts of PVDG integration...
Fuel cell (FC) is one of the most suitable candidates for distributed generation system either in standalone or grid connected mode. Due to the cleanness, modularity and higher potentiality, FC systems can be used in both single and hybrid systems for power generation. In this study a 26 kW standalone proton exchange membrane fuel cell (PEMFC) based energy system is developed using MATLAB/Simulink®...
Despite their increasing levels of penetration into electrical grid distribution systems, PV based distributed generation (DG) systems are still not yet well regarded as a useful contributor to grid voltage regulatory support. However, there is increasing recognition of the potential for these inverter based systems to not only inject real power into the grid, but also to inject/absorb reactive power...
Renewable energy sources are gaining more and more interest because they are sustainable and nonpolluting. Although renewable energy is useful, it can cause voltage violation due to its uncertainty in power output. In this paper, a solution method has been proposed to coordinate dispatchable Distributed Generation (DG) with voltage control devices for optimally regulating voltage profile by using...
This paper reports the study of dynamic behaviour of an integrated distributed generation (DG) system comprising wind turbines (WTs), solid-oxide fuel cell (SOFC) and microturbine (MT) under variable loading profile. WTs coupled to permanent magnet generators (PMGs) are combined with the SOFC and the MT to meet the total load demand. The fluctuations in the output of the WTs due to wind speed variations...
This paper proposes a new method to determine the droop of the inverter-based distribution generations (DGs). Conventionally, inverter-based DGs have droop controller with fixed slope according to their capacity. Some additional control methods have been proposed in order to enforce the maximum or minimum limit of a unit. However, in some severe cases, the frequency deviation during the islanded mode...
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