Results 31 to 40 of about 2,070,998 (294)
Recent blackouts in US and continental Europe: is liberalisation to blame? [PDF]
, 2004 The paper starts with a detailed technical overview of recent blackouts in the US, Sweden/Denmark and Italy in order to analyse common threads and lessons to be learnt.
Bialek, Janusz
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High Voltage, 2022 Developing green insulation materials has become an important direction for future research. As a new environmental insulation liquid, natural ester can effectively delay cellulose insulation polymer ageing.
Jian Hao +5 more
doaj +1 more source
Mode for reducing wind curtailment based on battery transportation
Journal of Modern Power Systems and Clean Energy, 2018 Renewable energy sources, such as wind and solar, face several obstacles, including curtailment, where the generated energy exceeds local demand and production must be reduced because of limited transmission capacity.
Zhanlong ZHANG +5 more
doaj +1 more source
Thermal Aging Characteristics of Newly Synthesized Triester Insulation Oil
IEEE Access, 2019 High-stability triester insulation oil derived from the trimethylolpropane esters (TME) was synthesized by esterifying saturated fatty acids and trimethylolpropane (TMP). The TME oil shows higher AC breakdown voltage (Vb, 72.6 kV/2.5 mm) than that of FR3
Kaizheng Wang +6 more
doaj +1 more source
Nature Communications, 2020 Surface charge density is a key factor for developing high performance triboelectric nanogenerators. Herein, authors establish criteria to quantitatively evaluate the contact efficiency and air breakdown model on charge excitation triboelectric ...
Yike Liu +8 more
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High Voltage, 2022 In order to improve the sensitivity and accuracy of oil‐paper insulation partial discharge detection by the fibre‐optic Fabry–Perot (FP) ultrasonic sensor, this work studied the ultrasonic signal’s frequency characteristics of typical oil‐paper ...
Zhixian Zhang +6 more
doaj +1 more source
Energies, 2017 Analyzing the concentration of low molecular acids dissolved in oil is vital in the oil-paper insulation aging diagnostic procedure of power transformers. The existing methods cannot distinguish between different acid types and their strengths.
Fu Wan +5 more
doaj +1 more source
A Data Mining Approach for Transformer Failure Rate Modeling Based on Daily Oil Chromatographic Data
IEEE Access, 2020 Evaluating the real-time failure rate of transformers can effectively guide the planning of maintenance and reduce their failure risk. This paper proposed a novel transformer failure rate model that considers the impact of maintenance based on daily oil ...
Wei Huang +10 more
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Efficient Database Generation for Data-driven Security Assessment of Power Systems
, 2019 Power system security assessment methods require large datasets of operating points to train or test their performance. As historical data often contain limited number of abnormal situations, simulation data are necessary to accurately determine the ...
Chatzivasileiadis, Spyros +3 more
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Intelligent intrusion detection in low power IoTs [PDF]
, 2016 Security and privacy of data are one of the prime concerns in today’s Internet of Things (IoT). Conventional security techniques like signature-based detection of malware and regular updates of a signature database are not feasible solutions as they ...
Ahmadinia, Ali +3 more
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