Emergency control automatic computation method of angle stability based on electro-mechanic transient simulation

12th IET International Conference on Developments in Power System Protection (DPSP 2014) ◽

10.1049/cp.2014.0121 ◽

2014 ◽

Author(s):

Hou Junxian ◽

Dong Yifeng ◽

Bu Guanquan ◽

Han Minxiao ◽

Wang Yi

Keyword(s):

Transient Simulation ◽

Computation Method ◽

Automatic Computation ◽

Emergency Control ◽

Angle Stability

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On Methods of Checking Digital Out-Of-Step Protection Devices

E3S Web of Conferences ◽

10.1051/e3sconf/202022001081 ◽

2020 ◽

Vol 220 ◽

pp. 01081

Author(s):

Ilya I. Litvinov ◽

Alexandra A. Marchenko ◽

Elena I. Gracheva

Keyword(s):

Power System ◽

Complex Plane ◽

Human Factor ◽

Testing Equipment ◽

Transient Simulation ◽

Field Conditions ◽

Emergency Control ◽

Impedance Vector ◽

Protection Devices ◽

Instantaneous Values

The article addressed the issue of commissioning task that must take place before putting out-ofstep protection into operation. Most of the developers of digital out-of-step protection devices utilize control of impedance vector locus parameter during transient in a power system to detect its out-of-step operation, however checking the setting of such protection in the field conditions using existing means is often a challenging work. To facilitate the commissioning of such devices and provide means to automatize the process so as to rid of human factor the authors suggest means of simulating impedance vector locus with the desired parameters on the complex plane to check distance out-of-step protection. The means for checking current-oscillation based out-of-step protection is also considered. The results of a transient simulation representing instantaneous values of currents and voltages are saved in the international oscillography recording format COMTRADE, which makes it possible to carry out comprehensive verification of emergency control equipment using any kind of testing equipment that is able to generate the corresponding electrical signals stored in such format.

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A simulator experiment investigating the effects of masked indicators in a NPP emergency control task: Scenario and design

PsycEXTRA Dataset ◽

10.1037/e578282012-009 ◽

2008 ◽

Author(s):

Helena Broberg ◽

Michael Hildebrandt ◽

Salvatore Massaiu ◽

Per Oivind Braarud

Keyword(s):

Control Task ◽

Emergency Control

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A linear perturbation computation method applied to hydrodynamic instability growth predictions in ICF targets

Journal de Physique IV (Proceedings) ◽

10.1051/jp4:2006133040 ◽

2006 ◽

Vol 133 ◽

pp. 201-204

Author(s):

J.-M. Clarisse ◽

C. Boudesocque-Dubois ◽

J.-P. Leidinger ◽

J.-L. Willien

Keyword(s):

Hydrodynamic Instability ◽

Linear Perturbation ◽

Computation Method ◽

Instability Growth

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Analysis of magnetic force and dynamic characteristic for non-contact permanent magnet linear drive device

International Journal of Applied Electromagnetics and Mechanics ◽

10.3233/jae-209452 ◽

2020 ◽

Vol 64 (1-4) ◽

pp. 1337-1345

Author(s):

Chuan Zhao ◽

Feng Sun ◽

Junjie Jin ◽

Mingwei Bo ◽

Fangchao Xu ◽

...

Keyword(s):

Finite Element ◽

Permanent Magnet ◽

Dynamic Characteristic ◽

Driving Force ◽

Magnetic Circuit ◽

Response Speed ◽

Computation Method ◽

Element Analysis ◽

Element Simulation ◽

The Relationship

This paper proposes a computation method using the equivalent magnetic circuit to analyze the driving force for the non-contact permanent magnet linear drive system. In this device, the magnetic driving force is related to the rotation angle of driving wheels. The relationship is verified by finite element analysis and measuring experiments. The result of finite element simulation is in good agreement with the model established by the equivalent magnetic circuit. Then experiments of displacement control are carried out to test the dynamic characteristic of this system. The controller of the system adopts the combination control of displacement and angle. The results indicate that the system has good performance in steady-state error and response speed, while the maximum overshoot needs to be reduced.

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