Results 31 to 40 of about 25,975 (270)

Integration of a failure monitoring within a hybrid dynamic simulation environment [PDF]

, 2008
The complexity and the size of the industrial chemical processes induce the monitoring of a growing number of process variables. Their knowledge is generally based on the measurements of system variables and on the physico-chemical models of the process.
Alur, Anderson, Barton, Basseville, Chen, Chow, David, David, De Kleer, Franck, Frank, Gertler, Gilles Hétreux, Isermann, Jean Marc Le Lann, Jourda, Marie Véronique Le Lann, Mehra, Nelly Olivier-Maget, Olivier, Olivier, Perret, Shih, Shih, Sifakis, Simani, Venkatasubramanian, Watanabe, Willsky, Wöllhaf, Xiong, Zaytoon   +31 more
core   +2 more sources

Influence of transition resistance and fault moment on DC system commutation process caused by two-phase fault of AC system

The Journal of Engineering, 2018
Commutation failure caused by the fault of AC system at inverter side seriously affects the safety and stability of high-voltage direct current (HVDC) system.
Jinzhao Song, Yongli Li, Yunke Zhang, Jingqiu Zhang   +3 more
doaj   +1 more source

General criterion for oblivious remote state preparation [PDF]

, 2006
A necessary and sufficient condition is given for general exact remote state preparation (RSP) protocols to be oblivious, that is, no information about the target state can be retrieved from the classical message.
A. Uhlmann, J. Janszky, P. Adam, Z. Kurucz   +3 more
core   +2 more sources

An Improved Commutation Prediction Algorithm to Mitigate Commutation Failure in High Voltage Direct Current

Energies, 2017
Commutation failure is a common fault for line-commutated converters in the inverter. To reduce the possibility of commutation failure, many prediction algorithms based on alternating current (AC) voltage detection have already been implemented in high ...
Xinnian Li, Fengqi Li, Shuyong Chen, Yanan Li, Qiang Zou, Ziping Wu, Shaobo Lin   +6 more
doaj   +1 more source

Quantitative Assessment for Commutation Security Based on Extinction Angle Trajectory

Journal of Modern Power Systems and Clean Energy, 2021
In order to reduce the risk of commutation failure (CF) in the AC/DC hybrid power system, the quantitative analysis on CF is required for on-line assessment and optimal control.
Qi Tao, Yusheng Xue
doaj   +1 more source

Thermofield-Bosonization on Compact Space [PDF]

, 2014
We develop the construction of fermionic fields in terms of bosonic ones to describe free and interaction models in the circle, using thermofielddynamics. The description in the case of finite temperature is developed for both normal modes and zero modes.
Amaral, R. L. P. G., Belvedere, L. V.
core   +1 more source

A Commutation Failure Suppression Control Method Based on the Controllable Operation Region of Hybrid Dual-Infeed HVDC System

Energies, 2018
With the increased use of high voltage direct current (HVDC) systems, line commutated converters (LCC-HVDC) and voltage source converters (VSC-HVDC) tend to feed into AC systems over short electrical distances.
Chao Xiao, Xiaofu Xiong, Jinxin Ouyang, Getu Ma, Di Zheng, Ting Tang   +5 more
doaj   +1 more source

Research on the characteristics of multi-infeed DC system with hybrid commutation converter suppressing successive commutation failure

International Journal of Electrical Power & Energy Systems
In view of the problem of successive commutation failure in multi-infeed direct current systems, this paper investigates the commutation characteristics of hybrid commutation convert technology and its application in mitigating successive commutation ...
Jian Cui, Zhichang Yuan, Kangsheng Cui, Long Zhang, Pengbo Zhao, Zhanqing Yu, Xiaoguang Wei, Xuejiao Han   +7 more
doaj   +1 more source

Study on Dynamic Characteristics of UHVDC System under Hierarchical Infeed Mode with STATCOM

Advances in Electrical and Electronic Engineering, 2021
This paper focuses on the investigation of the dynamic characteristics of Ultra High Voltage Direct Current (UHVDC) system Under Hierarchical Infeed Mode (UHVDC-HIM) with Static Synchronous Compensator (STATCOM). The STATCOM at the inverter side of UHVDC-
Atiq Ur Rehman, Zmarrak Wali Khan, Bilawal Rehman, Sheeraz Iqbal, Mehr Gul   +4 more
doaj   +1 more source

Control system for a superconducting rectifier using a microcomputer [PDF]

, 1981
Within the scope of a research program of superconducting rectifiers software is being developed to take care of the control of such systems. The hard-ware architecture which interferes with the in and output signals is based on a LSI-11/2 microprocessor
Caspari, Meindert, Houkes, Zweitze, Kamphuis, Dick A., Kate, Herman H.J. ten, Klundert, Louis J.M. van de   +4 more
core   +4 more sources