A5064511121- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Optimal Power Flow Distribution
- Mining and Industrial Processes
- Renewable energy and sustainable power systems
- Power System Reliability and Maintenance
- Lightning and Electromagnetic Phenomena
- Thermal Analysis in Power Transmission
- Earthquake Detection and Analysis
- Solar Radiation and Photovoltaics
- Power System Optimization and Stability
- Safety Systems Engineering in Autonomy
- Geomagnetism and Paleomagnetism Studies
- Risk and Safety Analysis
- Icing and De-icing Technologies
- Polish socio-economic development
- Technology and Human Factors in Education and Health
- Fusion and Plasma Physics Studies
- Information and Cyber Security
- Electric Power Systems and Control
- Wireless Communication Networks Research
- Microgrid Control and Optimization
- Industrial Engineering and Technologies
- Reliability and Maintenance Optimization
- Leadership, Human Resources, Global Affairs
AGH University of Krakow
2014-2024
University of Siedlce
2021
Institute of Mathematics
2021
Centrum Badań Kosmicznych
2021
Polish Academy of Sciences
2021
Institute of Computer Science
2021
National Centre for Nuclear Research
2021
Cracow University of Technology
2008
Abstract During Solar Cycle 24, which started at the end of 2008, Sun was calm, and there were not many spectacular geoeffective events. In this article, we analyze geomagnetic storm that happened on 15 July 2012 during 602nd anniversary Polish Battle Grunwald, thus propose event to be called “Battle Grunwald Day Storm”. According NOAA scale, it a G3 with southward component heliospheric magnetic field, $Bz$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>B</mml:mi>...
We study intense geomagnetic storms ( Dst < −100nT) during the first half of solar cycle 24. This type storm appeared only a few times, mostly associated with southwardly directed heliospheric magnetic field Bz . Using various methods such as self-organizing maps, statistical and superposed epoch analysis, we show that right after storms, there is growth in number transmission line failures. also examine temporal changes failures 2010-2014 find growing linear tendency electrical grid...
Nowadays, when the global and national industry is addicted from various electrical electronic equipment at a very high level, it of special interest to understand possible origins interruptions in electricity supply. Failures ground-based systems, or disturbances satellites operation caused by influential magnetic storms initiated changeable Sun can have economic impact on industry. These strong are triggered solar-driven interplanetary space. Studies these phenomena gained attention since...
This article presents the issue of impact operation prosumer installations on distribution network. The emergence a very large number distributed generation units in electric networks (in particular, photovoltaic low-voltage grids) can be associated with both positive and negative consequences. Positive consequences include, among others, environmental aspect electricity generation. Negative consequences, other hand, include technical problems power grid operation, manifested, for example,...
The paper presents a novel algorithm for solving distribution network reconfiguration problem in the context of power loss reduction and voltage profile improvement. proposed methodology exploits sequential approach, which is an enhanced simulated annealing routine including both local (deterministic) random modifications network. Local operations search best alterations individual connections, oriented towards objective function Occasional changes are accepted depending on corresponding...
We analyze the solar influence of space weather events on Polish energy infrastructure via geomagnetic disturbances. consider two time intervals very different levels activity (SA) in course cycle 24: 2010—an early rising phase SA, near minimum and 2014—solar maximum. From total number electrical grid failures, we extract almost five thousand failures 2010 more than ten 2014, which could be related to effects. data having unidentified causes, coupled with aging transmission network elements...
Distribution power network reconfiguration is one of the methods to reduce costs outages by isolating a part where failure occurred. Different benchmarks are used evaluate reliability for distribution grids. Optimization factors does not necessarily improve other factors. In this paper, we present multiobjective optimization algorithm solve problem optimal switches placement. SAIDI, SAIFI, and EENS indexes as objectives functions in optimization. A test model grid simulations has radial...
The paper is a result of synergic cooperation two academic teams, i.e. power engineering and mechanical distribution system operator. A real 15 kV overhead line exposed to catastrophic load ice rime was analyzed three solutions improve the reliability tested object in such conditions were examined. Authors considered: shortening length spans, heating main with increased current rebuilding cable line. researches worked out FEM model taking into account newest normatives, simulated model,...
The article introduces the problem of power loss reduction in applicators used magnetotherapy. To generate magnetic field whose distribution is optimal and to reduce loss, authors establish a set parameters evaluate model device. Results make it possible infer that real input necessary operate generator properly may vary significantly depending on construction localization. issues raised this paper should be treated as basis for further discussion used, e.g., Transcranial Magnetic Stimulation.
The paper addresses the problem of power distribution grids optimization in terms reducing costs related to undelivered energy due network failures. Grid is realized by allocating cut points that may limit effects failure on operation. A possible method these points, explored this work, grid structure using evolutionary algorithms, where cost function be minimized amount energy.
Currently, overhead lines dominate in the Polish medium and low voltage distribution networks.Maintaining their high reliability constitutes a very important challenge, especially under severely changing climate conditions.An power line exposed to ice rime loads has been considered.Using finite element method (FEM), mechanical of infrastructure was examined various atmospheric conditions.Loads stressful conditions rime, wind were determined for weakest section 30 kV line, which consisted...
We describe a model of power networks which may be useful for studying blackouts. The is combination the admittance network and probabilistic faults its components. To compute probability outage possible failure events are considered in each case possibility cascading studied. Graph representation used to detect connected components network, then equations solved separately component. show how use this blackout can develop suggestions improving designs. IEEE 188 bus usefulness approach.
The paper presents mathematical models of maintenance procedures. With regard to the random character states changes and damage electrical power devices, diagnostic these processes based on Markov theory have been proposed. Simulations proposed concern analysis reliability probability devices as a function time.
Abstract Nowadays, the space weather issues are of a great importance, especially, for all satellites operators or ground-based electrical and electronic systems caused by geomagnetic storms. In spite many studies on changeable Sun fluctuations in interplanetary triggered solar-driven disturbances, question, which components storms influence strongest is still open. Here, we consider data grids breakdowns having unidentified reasons, as well failures connected to aging infrastructure...
The dynamically developing automotive industry poses increasing challenges to manufacturers due the complexity of electronic systems used in cars and high safety requirements. ISO 26262 standard gives guidelines for project management field functional safety. It included lists work products, which usually prepare fundamental documents safety, such as development interface agreement or plan, etc.. degree implementation mentioned products helps arguments about ultimate product. is a aimed at...
Solar originating events are continually evident in galactic cosmic ray (GCR) flux registered at the ground by neutron monitors and situ space probes. We analyze time intervals of sporadic Forbush decreases (Fd) during ascending phase solar cycle 24. consider rays flux, as well as, solar, heliospheric geomagnetic activity parameters, around these periods, using different mathematical tools. Moreover, for this epoch we compute geoelectric field Poland's region a 1-D layered conductivity Earth...