To mitigate issues related to the growth of variable smart loads and distributed generation, distribution system operators (DSO) now make it binding for prosumers with inverters operate under pre-set rules. In particular, maximum active reactive power set points are based on local voltage measurements ensure that inverter output does not cause violations. However, such actions, as observed in t...

Recently, the penetration of Distributed Generation (DG) at medium and low voltages in utility networks is increasing in developed countries and takes special place for them worldwide. Due to the DGs advantages, including use of Renewable Energy which do not pollute environment and has endless nature, the application of DGs can potentially reduce the need for traditional system expansion, contr...

Environmentally friendly renewable energy technologies such as wind and solar energy systems are among the fleet of new generating technologies driving the demand for distributed generation of electricity. Power Electronics has initiated the next technological revolution and enables the connection of distributed generation (DG) systems to the grid. The challenge is to achieve system functionali...

electronic copies of this thesis document in whole and in part in any medium now known or hereafter created. ABSTRACT Over the last decade, penetration of microgrids containing distributed generation (DG) sources has increased in grid distribution systems. This requires the stable operation of microgrids when connected to the distribution system as well as during islanding. Islanding that is fa...

Abstract Large‐scale penetration of renewable resource based generation will displace conventional synchronous machine‐based power generation. This lower the overall system inertia and result in short circuit levels at point connection (POC) resources. Renewable resources such as wind solar photovoltaic (PV) are interfaced to via electronic inverters. Operation inverter‐based equipment under lo...

The operation and control of fuel cell (FC) distributed generation (DG) systems combined with energy storage are studied in this paper. For this purpose, modeling of hybrid FC/energy storage DG system is developed. Dynamic models for proton exchange membrane fuel cell (PEMFC), supercapacitor, DC–DC converters, and grid connected inverter are described. Then a PI controller for the FC converter ...

Objectives: This study proposes a droop controlled voltage unbalance reimbursement technique in an islanded microgrid. Methods/Analysis: The control system is executed in áâ static reference frame work. Here the distributed generators (DGs) inverters are managed appropriately to compensate imbalance in allocating active as well as reactive powers. The control system includes active as well as r...

Recent advances in power electronic technology have seen the development of a range of converter based power compensation systems which have the potential to improve supply quality and increase line utilisation in weak distribution networks at relatively low cost. However, the interaction of these devices with the supply network has not been well documented. In this paper we investigate the ste...

The number of distributed generation (DG) units is increasing rapidly. Combined heat and power (CHP) plants and wind turbines are most often installed. Integration of these DG units into the distribution grid leads to planning as well as operational challenges. Distributed generation (DG) is an emerging concept in the electricity sector, which represents good alternatives for electricity supply...