Modelling and Analysis of Currents Flowing in High Voltage Power Substations During Ground Short - Circuits

2018 ◽  
Author(s):  
Jakub Gajdzica ◽  
Wieslaw Nowak ◽  
Waldemar Szpyra ◽  
Rafal Tarko
Keyword(s):  
High Voltage ◽  
Short Circuits ◽  
Power Substations

scholarly journals Realizing poly(ethylene oxide) as a polymer for solid electrolytes in high voltage lithium batteries via simple modification of the cell setup

2021 ◽  
Author(s):  
Lukas Stolz ◽  
Gerrit Homann ◽  
Martin Winter ◽  
Johannes Kasnatscheew
Keyword(s):  
Ethylene Oxide ◽  
High Voltage ◽  
Lithium Batteries ◽  
Polymer Electrolytes ◽  
Solid Electrolytes ◽  
Simple Modification ◽  
Poly Ethylene Oxide ◽  
Benchmark System ◽  
Short Circuits ◽  
Poly Ethylene

Cell failure of polymer electrolytes is rather the result of short circuits instead of assumed electrolyte oxidation. A spacer with a constant and defined distance can avoid this failure, thus realize a benchmark system for a more systematic R&D.

Adaptive automatic reclosure of high voltage lines for elimination of interphase short circuits

2009 ◽  
Vol 43 (1) ◽  
pp. 52-53
Author(s):  
A. F. Bondarenko ◽  
N. A. Doni ◽  
A. A. Shurupov ◽  
A. I. Leviush ◽  
G. G. Fokin
Keyword(s):  
High Voltage ◽  
Short Circuits

scholarly journals RESEARCH OF TRANSIENT PROCESSES IN HIGH-VOLTAGE TRANSMISSION LINES 6–10 KV AND DEVELOPMENT OF MICROELECTRONIC SPECIAL PROCESSOR OF RELAY PROTECTION, INVARIANT TO CHANGE IN AMPLITUDES OF PHASE CURRENTS

2018 ◽  
pp. 57-83
Author(s):  
О. P. Liura ◽  
N. Ya. Vozna ◽  
Ya. M. Nykolaichuk
Keyword(s):  
Information Technology ◽  
High Voltage ◽  
Transmission Lines ◽  
Relay Protection ◽  
Electricity Transmission ◽  
Short Circuits ◽  
Special Processor ◽  
The Given ◽  
Structural Solutions ◽  
Fast Acting

The fast-acting algorithms of exposure and invariant authentication of transients in the lines of electricity transmission as load surge, short circuits and start of powerful electric engines were developed; based on that, the functions of relay defense device of high-voltage lines of electricity transmission were determined. The given structure of small, microelectronic fast-acting device of relay defense is with the extended functional possibilities of recognition of load surge and defense of high-voltage lines of electricity transmission from short circuits, the syntax of his functions was presented. This device can be used for load surge recognition and short circuits, invariant to the size of increase currents in the separate phases of electric lines. It allowed successful application of the developed method and device for simultaneous recognition of load surge, short circuits and starting of powerful electric engines. The information technology of designing structural solutions of relay protection special processor for high-voltage electricity transmission lines was presented.

scholarly journals INDUCED VOLTAGES CREATED BY A HIGH-VOLTAGE CABLE

2020 ◽  
Vol 2020 (1) ◽  
pp. 219-220
Author(s):  
Ty Nguen
Keyword(s):  
High Voltage ◽  
Power Lines ◽  
Induced Voltage ◽  
Modes Of Operation ◽  
Short Circuits

The results of modeling the effects of a high-voltage cable with cross-linked polyethylene insulation on adjacent power lines are presented. The calculations of the induced voltage on the adjacent voltage line were performed for five modes of operation of the 110 kV cable: symmetric and four unbalanced, caused by short circuits between the conductors, as well as between the conductors and the screen.

Investigation on new mitigation method for lightning overvoltages in high-voltage power substations

2013 ◽  
Vol 7 (10) ◽  
pp. 1055-1062 ◽  
Author(s):  
Tomasz Kuczek ◽  
Wojciech Piasecki ◽  
Mariusz Stosur ◽  
Martin Steiger ◽  
Marcin Szewczyk
Keyword(s):  
High Voltage ◽  
Power Substations

scholarly journals Comparative Analysis of High-Voltage Power Line Models for Determining Short-Circuit Currents in Towers Earthing Systems

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4729
Author(s):  
Rafał Tarko ◽  
Jakub Gajdzica ◽  
Wiesław Nowak ◽  
Waldemar Szpyra
Keyword(s):  
High Voltage ◽  
Current Distribution ◽  
Single Phase ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Power Line ◽  
Power Lines ◽  
Distribution Analysis ◽  
Short Circuits ◽  
Short Circuit Currents

The article deals with the problems of single-phase short-circuit current distribution in overhead power lines. Short-circuit disturbances cause many negative phenomena in power networks. Since experimental studies of short-circuits in real networks are practically impossible to perform, these effects can be evaluated only theoretically, based on short-circuit current calculations with the use of appropriate mathematical models. Although short-circuit modeling is considered to be one of the simplest power system calculations, the exact mathematical description of the phenomena occurring at short-circuits is complex. Simplified normative methods are often used for short-circuit current calculations; however, this does not give ground for a thorough analysis of short-circuit current distribution in power lines. The distributions are analyzed using power line models with different degrees of complexity in line with the assumptions made for a given model. The paper presents the problem of current distribution analysis in high-voltage overhead lines for single-phase faults to the tower structures. Simulation studies were conducted on the models developed for the calculation of short-circuit currents in the high-voltage power line earthing. The objective of the analysis was to assess the validity of simplification assumptions followed by practical recommendations on the applicability of the models.

The Effect of Current-Limiting Reactors on the Tripping of Short Circuits in High-Voltage Electrical Equipment

2016 ◽  
Vol 49 (5) ◽  
pp. 375-377 ◽  
Author(s):  
M. S. Volkov ◽  
Yu. P. Gusev ◽  
Yu. V. Monakov ◽  
Gvan Chun Cho
Keyword(s):  
High Voltage ◽  
Electrical Equipment ◽  
Current Limiting ◽  
Short Circuits
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