نتایج جستجو برای: islanding
تعداد نتایج: 763 فیلتر نتایج به سال:
This paper presents a model for reliability evaluation of Microgrids with Distributed Generation based on renewable energy resources. In this approach, DG participates in the network operation coordination as an active agent and not as a decentralized generation under which the utility has no control. Stochastic models are considered for representing generation availability related to wind ener...
With this distributed generation (DG) in distribution systems, its function generally tends to be changed. These effects leads to effects on distribution systems protection. One way to reduce the effects of distributed generation protection system of distribution systems is re-coordination of protective devices. To prevent the high cost, system configuration should be modified to reduce the DG ...
This paper proposes a strategy for detecting unintentional islanding operations (IOs) in distribution networks (DNs) with distributed generation (DG), which eliminating the non-detection zone (NDZ). hybrid method achieves zero-NDZ by taking advantage of both passive and active methodologies an inverter-based DG scenario. The passive-based part proposed considers settings low thresholds is activ...
A number of recent experiments have showed that surfactants can modify the growth mode of an epitaxial film, suppressing islanding and promoting layer-by-layer growth. Here I introduce a set of coupled equations to describe the nonequilibrium roughening of an interface covered with a thin surfactant layer. The surfactant may drive the system into a novel phase, in which the surface roughness is...
The protection against the unintentional islanding of Grid-Tied inverters is an important electrical security issue addressed by main Standards. This concern justified in face fact that can lead to abrupt variations voltage and frequency, damages, professional accidents, power quality degradation, out-of-phase reclosure. In response concern, literature has proposed several Anti-Islanding Protec...
The connection of renewable energy sources (RESs) to the distribution network has been rising at a steady pace over past decades. great penetration RESs such as grid-connected photovoltaic system brings new technical challenges networks unintentional islanding. Conceptually, this situation occurs when portion that isolated from main grid remains energised by embedded RESs. This unexpected scena...
This article presents a new passive islanding detection technique in MGs that uses locally measured voltage signals at the PoC of DERs. The proposed method distinguishes events from normal/non-islanding conditions by utilizing superimposed harmonic spectra extracted through full-cycle discrete Fourier transform. Our solution utilizes machine-learning-based one-class classifier to define and adj...
<span lang="EN-US">Islanding is when an area of the electrical distribution system isolated from while being powered by distributed generators. An important condition for interconnection power plants and systems ability plant to detect islands. The presented proposed method a combination best active sandia frequency shift (SFS) with intelligent fuzzy logic controller, which has been teste...
Microgrids with distributed generation (DG) are rapidly coming into distribution networks to supply load demand in order preserve ecological balance and reduce greenhouse gas emissions. Power electronic advancements making renewables dispatchable loads while turning passive active bidirectional power flow. The IEEE-1547-2018 regulations enforced certain standards on microgrids, including the ab...
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