A5042043906- Power Systems Fault Detection
- Islanding Detection in Power Systems
- Smart Grid Security and Resilience
- Electric Motor Design and Analysis
- Sensorless Control of Electric Motors
- Thermal Analysis in Power Transmission
- Power System Optimization and Stability
- Power Systems and Renewable Energy
- Real-time simulation and control systems
- Electrical Fault Detection and Protection
- Power Line Communications and Noise
- Software System Performance and Reliability
- Power System Reliability and Maintenance
- Network Time Synchronization Technologies
- Optimal Power Flow Distribution
- Infrastructure Resilience and Vulnerability Analysis
- HVDC Systems and Fault Protection
- Multilevel Inverters and Converters
Brno University of Technology
2020-2025
This paper focuses on the analysis of suitable optimization methods applied to large meshed low-voltage networks. The introduced aim minimize SC-current contribution by simultaneously fulfilling well-defined operational constraints. high number binary variables (134) used in worst case determine possible network configurations generates 1040 solutions. For this reason, only capable reducing necessary steady-state calculations a tractable size. Depending under study, deterministic method...
The paper deals with a problem of upstream active power flows in MV/LV meshed distribution networks case fault at MV side. concept protection (UAPP) is presented as an alternative to directional overcurrent relays. contribution focused on software tool for calculation the UAPP setting. Presented method based short-circuit faults simulations using numerical model network order define threshold values respecting limiting conditions each transformer. discusses one-stage/two-stage and...
The paper is focused on the evaluation of pilot test method Vdip, which was designed for localization unsymmetrical faults, especially an earth fault, in resonant earthed distribution networks. describes concept proposed Vdip system and fault results accomplished with a MV network.
This paper is focused on calculation of negative sequence changes voltage and current from distributed measurement. These are necessary for evaluation a new fault localization method Vdip. A principle described, problems affiliated with phasor estimation discussed. Solutions suppressing major disturbances, such as frequency deviation interharmonics, suggested. way cancelling out interharmonics based averaging in sliding windows presented. Eventually, procedure formed, performance individual...
The paper deals with the issue of utilization faulty phase earthing (FPE) technique as alternative to single fault autoreclosing in resistor earthed medium voltage distribution network. Possible integration this common protection concept well current limitation efficiency is discussed paper. In order evaluate benefits flowing from FPE utilization, a sensitivity analysis simple network was performed focused mainly on impact dips and swells invoked at low level.
This paper deals with LV mesh network reconfiguration in order to minimize short circuit currents.The rests switching off selected elements leading increase of impedances nodes.For optimal configuration, an algorithm sequential disconnecting is proposed, based on load flow and calculations.The procedure applied a model MV/LV network.Reduction currents this presented, capturing impact each step the sequence.Based presented results, deploying other measures further development proposed are discussed.