Accurately characterizing the performance of an off-grid photovoltaic (PV) microgrid system can help ensure that the system is appropriately sized to reduce the reliance on supplemental power generation via diesel-fueled generators. However, deterministic models cannot account for the inherent variability of solar insolation, ambient temperature, initial battery charge, and electrical load. A M...

The need to restore and keep the grid running or fast restoration during emergencies such as extreme weather conditions is quite apparent given reliance of other infrastructure on electricity. One promising approach electricity use locally available energy resources system form isolated microgrids. In this paper, we present a black start method that forms islanded microgrids after blackout. mas...

This paper presents the state of the art research and application of microgrid in China, and then introduces the major concerns for the development of microgrid. The research related to microgrid in China arose around 2004, focused on the connection of distributed energy resources (DERs) to grid and its influence on distribution network, and then followed the microgrid concept of Consortium for...

Abstract The consensus algorithm is widely used in the microgrid, but it affected by communication of distributed generators. If delay serious, can affect system’s performance and cause instability. To ensure stability microgrid under constraints, aiming at extensive penetration flexible loads transmission network considered, this paper proposes a economic dispatch method based on constraints. ...

Abstract: A stand-alone multi-microgrid (MMG) system can be formed by connecting multiple stand-alone microgrids (MGs). In the stand-alone MMG system where the frequencies of each MG system are different, a back-to-back (BTB) converter can be used for interconnecting the adjacent MG system. The frequency control performance of the MMG system can be improved by designing the suitable controller ...

There is a constant push towards increasing use of renewable energy-based distributed generators around the globe. While they provide clean and sustainable source energy, employ technologies that are unknown to traditional power systems. These interfaced via inverters lack inertia large synchronous machines. This manifests itself as more volatile frequency profile susceptible disturbances. phen...

Alibeik, Maryam. MSECE, Purdue University, August 2014. Different Configurations of Microgrids and Power Converters. Major Professor: Dr. Euzeli dos Santos Jr. This thesis proposes a two-phase microgrid system with voltages in quadrature. The two-phase microgrid system presents the following advantages: 1) constant power through the power line at balanced condition; 2) two voltages available by...

Abstract: This paper proposes a novel protection method for single line-to-ground (SLG) faults in ungrounded low-inertia microgrids. The proposed method includes microgrid interface protection and unit protection. The microgrid interface protection is based on the difference between the zero-sequence voltage angle and the zero-sequence current angle at the microgrid interconnection transformer ...

In order to study the influence of system parameters on the stability and dynamic performance of combination-configuration microgrid based on droop control, small-signal model is established at the point of steady state. By calculating the eigenvalues of state matrix, the small-signal stability of combination-configuration microgrid can be directly analyzed. Based on sensitivity analysis, the k...

The provision of both electrical and mechanical energy services can play a critical role in poverty alleviation for the almost two billion rural users who currently lack access to electricity. Distributed generation using diesel generators remains a common means of electricity provision for rural communities throughout the world. Due to rising fuel costs, the need to address poverty, and conseq...