Abstract In order to ensure the provision of high-quality power quality and smooth operation system, aiming at problem low prediction accuracy indices, this paper proposes an online method indices based on VMD-LSTM residual analysis. Firstly, is used simulate predict normal signal; then predicted signal data different from actual obtain signal, input into one-dimensional convolutional neural ne...

Abstract The voltage fluctuation and flicker level are important indicators for evaluating power quality. Correct identification of sources can effectively help to improve To solve the problems insufficient accuracy lack propagation path analysis in current source location research, a method based on wide-area information is proposed. Based frequency-amplitude binary characterization, main comp...

This paper introduces the concept of risk applied to light flicker. It offers a novel stochastic assessment flicker produced by voltage fluctuations from devices in household. The has contributed with models patterns several household devices. severity been determined based on perception generalized LED lamp using an index defined as factor, what is contrast incandescent considered IEC 61000-4-...

Non-linear loads are commonly present in industrial facilities, service facilities, office build‐ ings, and even in our homes. They are the source of several Power Quality problems such as harmonics, reactive power, flicker and resonance [1-3]. Therefore, it can be observed an in‐ creasing deterioration of the electrical power grid voltage and current waveforms, mainly due to the contamination ...

original article   mental fatigue (mf) is considered as a contributor factor in incident, even catastrophic one. electroencephalography measurement has been the most acceptable method to assess mf by neurologists. however, this method could be hardly feasible in real work setting. flicker fusion device, by contrast, is more usable at work setting. the purpose of this study was to compare the cr...

The detection and classification of power quality events that disturb the voltage and/or current waveforms in electrical distribution networks is very important to generate energy deliver this end-user equipment at an acceptable voltage. Various property extraction methods are used determine type disturbances signal. In study, seven distortions including sag, swell, harmonics, sag with swell fl...

Solid-state transformer (SST); Medium frequency transformer; AC/AC converter; Matrix converter Abstract This paper presents a novel topology of solid-state transformer (SST). In the design process, the AC/DC, DC/AC and AC/AC converters have been integrated to achieve higher efficiency. To obtain higher efficiency from other SST with DC-link topologies, the AC/DC and DC/AC converters have been i...

Renewable energy sources are alternative energy source, can bring new challenges when it is connected to the power grid. Generated power from wind energy system is always fluctuating due to the fluctuations in the wind. According to the guidelines specified in IEC61400 standard (International Electro-technical Commission) provides some norms and measurements. The performance of the wind turbine...

We present Flicker, an infrastructure for executing security-sensitive code in complete isolation while trusting as few as 250 lines of additional code. Flicker can also provide meaningful, fine-grained attestation of the code executed (as well as its inputs and outputs) to a remote party. Flicker guarantees these properties even if the BIOS, OS and DMA-enabled devices are all malicious. Flicke...

BACKGROUND AND PURPOSE A common task in radiology interpretation is visual comparison of images. The purpose of this study was to compare traditional side-by-side and in-place (flicker) image presentation modes with advanced methods for detecting primary brain tumors on MR imaging. MATERIALS AND METHODS We identified 66 patients with gliomas and 3 consecutive brain MR imaging examinations (a ...