Results 71 to 80 of about 45,105 (281)

Ultrafast Multilevel Switching and Synaptic Behavior in a Planar Quantum Topological Memristor

Advanced Science, EarlyView.
Dry‐transferred Bi2Te3 layers enable a planar quantum topological memristor framework. In‐plane topological surface states facilitate ultrafast & low‐power operations. Coexisting analog and digital modes support current‐controlled multilevel states. PQTM exhibits 105 s retention, 103 cycles endurance, and reproducibility across 24 devices.
Mamoon Ur Rashid, Usman Safder, Sobia Ali Khan, Anh‐Tuan Pham, Muhammad Sheeraz, Nguyen‐Hoang Dang, Duy Le Thanh, Zeeshan Tahir, Faisal Maqbool, Koo‐Hyun Chung, Sunglae Cho, Jungdae Kim, Yong Soo Kim   +12 more
wiley   +1 more source

Diagnosis and treatment for frequency hopping of PMU within an intelligent substation

Zhejiang dianli
In the wide area measurement system （WAMS） of a province， occasional frequency hopping has been observed in digital phasor measurement unit （PMU） within an intelligent substation.
WANG Zhihua, ZHANG Jiangnan, JIN Yangjun, XU Zhiwei, WU Po, LI Xiaohui, YANG Qianqian   +6 more
doaj   +1 more source

RRAM Variability Harvesting for CIM‐Integrated TRNG

Advanced Electronic Materials, EarlyView.
This work demonstrates a compute‐in‐memory‐compatible true random number generator that harvests intrinsic cycle‐to‐cycle variability from a 1T1R RRAM array. Parallel entropy extraction enables high‐throughput bit generation without dedicated circuits. This approach achieves NIST‐compliant randomness and low per‐bit energy, offering a scalable hardware
Ankit Bende, Gokulnath Rajendran, Regina Dittmann, Anupam Chattopadhyay, Vikas Rana   +4 more
wiley   +1 more source

Defense Method for Smart Grid GPS Spoofing Attack Based on BiLSTM and Self-attention Mechanism Generative Adversarial Network

Zhongguo dianli
Phasor measurement unit (PMU) plays a crucial role in smart grids, enabling precise synchronized acquisition of electric power data. Due to the use of the global positioning system (GPS) for time synchronization, the PMU is vulnerable to GPS spoofing ...
Hui WU, Ziwei ZOU, Fengming XIAO, Jie LIU, Chenpeng MIN, Zhuoqun XIA   +5 more
doaj   +1 more source

Application of Advanced Early Warning Systems with Adaptive Protection [PDF]

, 2015
This project developed and field-tested two methods of Adaptive Protection systems utilizing synchrophasor data. One method detects conditions of system stress that can lead to unintended relay operation, and initiates a supervisory signal to modify ...
Ashrafi, Frank, Babski-Reeves, Kari, Blumstein, Carl, Centeno, Virgilio, Cibulka, Lloyd, King, Roger, Madani, Vahid, Thorp, James   +7 more
core  

Minimum Sparsity of Unobservable Power Network Attacks

, 2016
Physical security of power networks under power injection attacks that alter generation and loads is studied. The system operator employs Phasor Measurement Units (PMUs) for detecting such attacks, while attackers devise attacks that are unobservable by ...
Goldsmith, Andrea, Poor, H. Vincent, Zhao, Yue   +2 more
core   +1 more source

Reduced Variability in Threshold Switches Using Heterostructures of SiOx and Vertically Aligned MoS2

Advanced Electronic Materials, EarlyView.
Heterostructures of SiOx and vertically aligned MoS2 exhibit reliable threshold switching by guiding Ag ion migration through van der Waals gaps. Compared to SiOx‐only devices, these heterostructures demonstrate higher switching voltages, faster switching speeds, and reduced variability.
Jimin Lee, Rana Walied Ahmad, Sofía Cruces, Dennis Braun, Lukas Völkel, Ke Ran, Joachim Mayer, Stephan Menzel, Alwin Daus, Max C. Lemme   +9 more
wiley   +1 more source

The study of synchronization accuracy of ENMU devices according to the PTPv2 protocol in laboratory conditions

Вестник Северо-Кавказского федерального университета
Introduction. One of the directions of digital transformation of the electric power industry is the introduction of intelligent electronic devices (IED) with the function of synchronized measurements.
Yu. G. Kononov, P. A. Zvada, E. G. Zelenskii, R. A. Zvezdilin, D. A. Turchenko   +4 more
doaj   +1 more source

Field PMU Test and Calibration Method—Part II: Test Signal Identification Methods and Field Test Applications

Journal of Modern Power Systems and Clean Energy, 2023
Synchrophasor measurement units (PMUs) provide synchronized measurement data for wide-area applications. To improve the effectiveness of synchrophasor-based applications, field PMUs must be tested to ensure their performance and data quality.
Sudi Xu, Hao Liu, Tianshu Bi
doaj   +1 more source

A Regularized Tensor Completion Approach for PMU Data Recovery

IEEE Transactions on Smart Grid, 2021
This article presents a novel data recovery framework for missing synchrophasor measurements. The imputation accuracy for the existing data recovery methods is significantly reduced when there are consecutive data losses across multiple data streams ...
Amir Ghasemkhani, I. Niazazari, Yunchuan Liu, H. Livani, Virgilio Centeno, Lei Yang   +5 more
semanticscholar   +1 more source