Identification of High-resistance Earth Faults in Medium Voltage Networks Using Higher Harmonics
Journal Title: Acta Energetica - Year 2017, Vol 30, Issue 1
Abstract
One way to detect line-to-earth arc faults and high-resistance faults in compensated medium voltage networks is based on the criterion of reactive power of higher harmonics in zero sequence voltage and current components. The harmonic content of currents and voltages was evaluated as a function of non-linear short-circuits resistance parameters. This criterion-based earth fault protection’s model is described. Examples of high-resistance fault detection are attached.
Authors and Affiliations
Lubomir Marciniak, Mateusz Piątek
Keywords
Related Articles
- EP ID EP198007
- DOI 10.12736/issn.2300-3022.2017105
- Views 51
- Downloads 0
Ways of Improving the Reliability of Supply of Selected Important Municipal Customers in Municipalities
This paper reviews the most important ways to improve the reliability of supply of consumers, i.e. the increase in the number of directions of supply, use of grid and system automatic controls, and installation of distri...
Identification of High-resistance Earth Faults in Medium Voltage Networks Using Higher Harmonics
One way to detect line-to-earth arc faults and high-resistance faults in compensated medium voltage networks is based on the criterion of reactive power of higher harmonics in zero sequence voltage and current components...
Evaluation of The Operation and Improvement of the Stability of the Factory Power Network, Taking into Account the Uncertainty of the Network Model Parameters
There was analysed the operation of a factory power network working in island mode and cooperating with the Polish National Power System (PNPS) in selected transient states. It was assumed that two generating units: one...
Development Strategies for Electric Utilities
Electric utilities are of key importance for the national economy. Many research institutions deal with issues of the power sector to find an answer to the question, which of the developed strategies to ensure energy sec...
Calculations of Short-Circuit Current Flows in Earth Wires of HV Lines
This paper presents a method which enables calculating flows of short-circuit currents in earth wires of high voltage transmission lines, and its implementation in the form of a computer programme. The algorithm enables...