One critical value microgrids bring to power systems is resilience, the capability of being able to island from the main grid under certain conditions and connect back when necessary. Once islanded, a microgrid must be synchronized to the main grid before reconnection to prevent severe consequences. In general, synchronization of a single machine with the grid can be easily achieved using a syn...

This paper presents a control method for the Doubly-fed Induction Generator connected to a dc link through a diode bridge on the stator. In this system, the rotor is fed, at the slip frequency, by a PWM electronic converter and the stator is directly connected to the dc link using a simple diode bridge. The cost of power electronics is reduced in this system when compared with the classic DFIG ...

The study investigates a bottom-up concept for microgrids. Financial analysis is performed through a business model approach to test for viability when replacing a researched energy expenditure baseline in Bangladesh. A literature review compares the approach to current trends in microgrids. A case study of Bangladesh illustrates the potential for building on the existing infrastructure base of...

Distributed Generation, or DG, involves utilization of small generators that are distributed in a power network, to supply the electric power demands of utility customers. This paper presents the small signal analysis of droop based generation control schemes for parallel connected DG inverters comprising of active powerfrequency and reactive power-voltage controllers. Small-signal models are d...

The world's energy demand has increased significantly in the past two decades, and there is a growing concern over security adequacy. use of renewable sources microgrids can play significant role ensuring sustainable future. Effective resource planning critical to achieving global commitments towards development. It involves managing optimizing supply storage resources, including sources. Micro...

The microgrid concept has evolved from the humble origins of simple remote electrification applications in rural environments to complex architectures. Microgrids are key enablers integration higher penetrations renewables energy sector (including electricity, heating, cooling, transport and industry). In addition local sources, storage systems loads, modern encompasses sophisticated power mana...

Microgrids can deploy traditional and/or renewable power sources to support remote sites. Utilizing renewable power sources requires more complicated control strategies to achieve acceptable power quality and maintain grid stability. In this research, we assume that the grid stability problem is already solved. As a next step, we focus on how the power can be dispatched from multiple power sour...

The amount of generation of renewable energy sources in the European grid has strongly increased. In 2005 eight times more energy was generated by RES compared to 1990. In the future the EU wants to promote the integration of RES. Mainly the use of wind energy and biomass should be expanded. As to date, RES were connected to the distribution grid usually with a ”fit and forget” approach. Due to...

Abstract: With the development of microgrids (MGs), interconnected operation of multiple MGs is becoming a promising strategy for the smart grid. In this paper, a privacy-preserving distributed optimal scheduling method is proposed for the interconnected microgrids (IMG) with a battery energy storage system (BESS) and renewable energy resources (RESs). The optimal scheduling problem is modeled ...