This paper presents a new multi-objective control strategy for inverter-interfaced distributed generation (IIDG) to ensure its safe and continuous operation under unbalanced voltage sags. The proposed can effectively improve the low ride through (LVRT) capability, reduce active power oscillations, limit overcurrent simultaneously, which are marked as most important objectives of IIDG during adv...

Replacing conventional generation with inverter-interfaced units has turned distribution networks (DNs) from consumers to active and responding intelligent DNs. These modern DNs contain several devices that can support the transmission network (TN) system stability. Typically, deterministic aggregated models for loads are used include entire in bulk stability studies, contributions smart neglec...

One of the most important challenges of distributed generation (DG) development in distribution systems is their protection. It is necessary to have a scheme for keeping the protection settings unchanged. In this paper, adverse impacts of the inverter based distributed generation (IBDG) are evaluated, and an algorithm is proposed to limit the fault current, feed, which is generated by IBDGs. Th...

Over the past decade, world’s electrical grid infrastructure has experienced rapid growth in integration of grid-edge inverter-based distributed energy resources (DERs). This led to operating concerns associated with reduced system inertia, stability and intermittent renewable power generation. However, advanced or “smart” inverters can provide services such as volt-VAR, frequency-Watt, constan...

Distribution systems are undergoing a dramatic transition from a passive circuit that routinely disseminates electric power among downstream nodes to the system with distributed energy resources. The distributed energy resources come in a variety of technologies and typically include photovoltaic (PV) arrays, thermostatically controlled loads, energy storage units. Often these resources are int...

Appropriate renewable distributed generation (RDG) placement is one of the most significant issues for efficient operation current power systems. Since inverter-interfaced RDG lacks rotating mass to sustain system’s inertia, microgrids have low total system which impairs frequency stability and can yield voltage instability in severe disruptions. The virtual synchronous generator (VSG), uses co...

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...

The dynamic nature of distributed generation (e.g. from wind) makes to design a control system for wind turbines that utilize wind energy. The design of a wind turbine control system becomes more difficult when the system is operated in grid-connected mode. The major i sues include connection standard, control system complexity, cost and required instrumentation. A low cost control system and i...