Dynamic Impact of Microgrids on Power Systems

Environmental and technical merits of Microgrids (MGs), as clusters of Distributed Energy Resources (DERs), make them attractive to fulfill the increasing needs for electrical energy. While low penetration of MGs/DERs has little influence on host grid stability and dynamics, the ability of the system to accommodate high penetration of MGs is in concern. As MGs penetration level increases, conventional generators, along with the inherent rotational inertia property they contribute will be displaced by Distributed Generations (DGs). While conventional generator rotating mass, i.e., rotational inertia, significantly contribute to power system stability and dynamics via providing kinetic energy to the grid (or absorb it from the grid) in case of frequency deviation, a MG has small or no rotational inertia. Thus, loss or reduction of rotational inertia in response to increasing MGs penetration level leads to slow reaction of traditional frequency schemes to disturbances, which, in turn, may result in large deviations and probable instability. Therefore, one of the impediments to increase MGs penetration level stems from the reduction of system inertia which, in turn, renders dynamics faster.

Renewable Energy Sources and DGs

SMGRC - University of Kurdistan

Grid Connected RESs and Ancillary Services

SMGRC - University of Kurdistan

Microgrids: Dynamics and Modeling

SMGRC - University of Kurdistan

Microgrid Planning

SMGRC - University of Kurdistan

Microgrid Protection

The idea is to find new solutions including advanced control and estimation methods for protection of AC and DC microgrids.

Virtual Inertia

Compared to the conventional power systems with synchronous machines, the microgrids with distributed generators (DGs) have either very small or no inertia which is the main source of stability. A solution towards the microgrid stability enhancement is to provide virtual inertia, by using the concept of virtual synchronous generator (VSG). The VSG simulates the dynamic behavior of a SG represented by its fundamental swing equation to create virtual inertia. Unlike a real synchronous machine, the parameters of VSG can be controlled to enhance the dynamic response of the system.

Energy Management in Microgrids

SMGRC - University of Kurdistan

Modern Power Grids: Operation and Control

SMGRC - University of Kurdistan

Microgrids (Spring 2017)

Microgrids are an ideal way to intelligently integrate renewable resources, enable customer participation in the electricity enterprise, add reliability, bring diversification of energy sources, reduce carbon emissions and costs. They form the building blocks of the modern, smart power grid. This course provides both theoretical knowledge and practical foundation for understanding of Microgrids. Different aspects of these small-scale power systems, current challenges and research directions will be examined in detail.

Wide-Area Power System Monitoring and Control

Wide-area power system monitoring and control (WAPSMC) is an important issue in modern electric power system design and operation; and is becoming more significant today due to the increasing size, changing structure, introduction of renewable energy sources, distributed smart/micro grids, environmental constraints, and complexity of power systems. The wide area measurement system (WAMS) with phasor measurement units (PMUs) provide key technologies for monitoring, state estimation, system protections and control of widely spread power systems. A direct, more precise and accurate monitoring can be achieved by the technique of phasor measurements and global positioning system (GPS) time signal. Proper grasp of the present state with flexible wide area control and smart operation address significant elements to maintain wide-area stability in the complicated grid with the growing penetration of distributed generation and renewable energy sources. In response to the existing challenge of integrating advanced metering, computation, communication and control into appropriate levels of PSMC, this course provides a comprehensive coverage of WAPSMC understanding, analysis, and realization. It presents both theoretical knowledge and practical foundation for understanding of WAPSMC. Different aspects, current challenges and research directions will be examined in detail.

Microgrids (Spring 2018)

Microgrids are an ideal way to intelligently integrate renewable resources, enable customer participation in the electricity enterprise, add reliability, bring diversification of energy sources, reduce carbon emissions and costs. They form the building blocks of the modern, smart power grid. This course provides both theoretical knowledge and practical foundation for understanding of Microgrids. Different aspects of these small-scale power systems, current challenges and research directions will be examined in detail.

Microgrids: Dynamics Operation and Control

The Smart/Micro Grids Research Center (SMGRC) at University of Kurdistan offers a workshop on microgrids entitled ‘Microgrids: Dynamics Operation and Control’. This workshop will provide both theoretical knowledge and practical foundation for understanding of Microgrids. Different aspects of these small-scale power systems, current challenges and research directions will be examined in detail with focus on the following topics: • Modern . . .