Results 21 to 30 of about 23,320,538 (256)

Artificial Neural Network Controller in Two-Area and Five-Area System with Security Attack and Game-Theory Based Defender Action

, 2022
Smart grids are the latest technology to generate and dispatch an optimal amount of power. Thus, there is a need for stability analysis in smart grid systems. If the smart grid is incorporated into the power system, then the phasor measurement unit (PMU)
V. Madhusudhan, R. Kiranmayi, S. Khadarvali   +2 more
core   +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

MERCHANDISE DISPLY SECURITY SYSTEM [PDF]

, 2020
Embodiments of the present invention are directed to security systems for securing an item of merchandise from theft. For example, the security system may include a sensor configured to be secured to the item of merchandise and to detect authorized ...
InVue Security Products Inc.
core  

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

Partial discharge characteristics of an air gap defect in the epoxy resin of a saturable reactor under an exponential decay pulse voltage

High Voltage, 2020
Saturable reactor insulation is currently stressed by an exponential decay pulse voltage under normal operating conditions. The partial discharge (PD) characteristics of epoxy resin under an exponential decay pulse voltage were studied here and were ...
Lu Gui, Yan Mi, Shengchu Deng, Lulu Liu, Xin Ge, Wenmin Ouyang   +5 more
doaj   +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

Model and Data Hybrid Driven Approach for Quantifying the Meteorology-Dependent Demand Flexibility of Building Thermal Loads

CSEE Journal of Power and Energy Systems
Recently, the heat and electricity integrated energy system (HE-IES) has become a hot topic in both industry and academia. In the HE- IES, the potential flexibility of the buildings' thermal loads can be exploited to relax the heat power balance ...
Bo Hu, Xin Cheng, Changzheng Shao, Tao Niu, Chunyan Li, Yue Sun, Wei Huang, Kaigui Xie   +7 more
doaj   +1 more source

Transient stability sensitivity analysis of a simplified power system

, 2007
There are many limits in power system operation however transient stability poses some of the most stringent limitations. Typical measures to assess transient stability, such as critical fault clearing time, provide some indication of whether or not a ...
H.M. Tan, Zivanovic, R., R. Zivanovic, Tan, H.   +3 more
core   +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, Wu, Felix F, Varaiya, Pravin   +2 more
core   +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