Results 31 to 40 of about 2,065,537 (339)

Secure High DER Penetration Power Distribution Via Autonomously Coordinated Volt/VAR Control [PDF]

, 2020
Traditionally voltage control in distribution power system (DPS) is performed through voltage regulating devices (VRDs) including on load tap changers (OLTCs), step voltage regulators (SVRs), and switched capacitor banks (SCBs). The recent IEEE 1547-2018
Joseph, Anto, Mehraeen, Shahab, Smedley, Keyeu   +2 more
core   +1 more source

Experimental and molecular level analysis of natural ester delaying degradation of cellulose insulation polymer

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, Wenyu Ye, Chenyu Gao, Mengzhao Zhu, Lijun Yang, Ruijin Liao   +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, Daojun MEI, Han JIANG, Guohua LIU, Hongpeng HE, Yue CHEN   +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, Feipeng Wang, Qi Zhao, Jian Li, Ziyi Lou, Qiuhuang Han, Kelin Hu   +6 more
doaj   +1 more source

Quantifying contact status and the air-breakdown model of charge-excitation triboelectric nanogenerators to maximize charge density

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, Wenlin Liu, Zhao Wang, Wencong He, Qian Tang, Yi Xi, Xue Wang, Hengyu Guo, Chenguo Hu   +8 more
doaj   +1 more source

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, Javed, Abbas, Larijani, Hadi, Saeed, Ahmed   +3 more
core   +1 more source

Oil‐paper insulation partial discharge ultrasonic multifrequency sensing array based on fibre‐optic Fabry–Perot sensor

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, Jiali Lei, Weigen Chen, Tianhe Yang, Yuxuan Song, Kejie Wu, Fan Liu   +6 more
doaj   +1 more source

Pricing for system security [PDF]

, 1995
Security in power systems refers to the ability of the system to withstand imminent disturbances (contingencies). Maintaining security is an issue which must be addressed at the system level.
Kaye, RJohn, Varaiya, Pravin, Wu, Felix F   +2 more
core   +1 more source

A Novel Method to Directly Analyze Dissolved Acetic Acid in Transformer Oil without Extraction Using Raman Spectroscopy

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, Lingling Du, Weigen Chen, Pinyi Wang, Jianxin Wang, Haiyang Shi   +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, Xuan Li, Bo Hu, Jiahao Yan, Lvbing Peng, Yue Sun, Xin Cheng, Jinfeng Ding, Kaigui Xie, Qinglong Liao, Lingyun Wan   +10 more
doaj   +1 more source