Single Phase Earth Fault Location in the Medium Voltage Distribution Networks

Linčiks, Jevgēnijs; Baranovskis, Dzintars

doi:10.2478/v10144-009-0002-6

Cited by 9 publications

(10 citation statements)

References 2 publications

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“…Despite the presented method, harmonic based methods like Zon, Volna, ZVN, YC3, etc. or symmetrical component-based i.e., negative current are used [24,25].…”

Section: Methods Of Fault Localizationmentioning

confidence: 99%

Detection and Location of Earth Fault in MV Feeders Using Screen Earthing Current Measurements

Łowczowski

Lorenc

Zawodniak³

et al. 2020

Energies

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The paper analyzes the utilization of cable screen currents for earth fault identification and location. Attention is paid on cable and mixed feeders—cable and overhead lines. The principle of operation is based on utilization of 3 criterion values: Ratio of cable screen earthing current and zero sequence cable core current—RF110/15, phase shift between cable screen earthing current and zero sequence cable core current—α and cable screen admittance defined as a ratio of cable screen earthing current and zero sequence voltage—Y0cs. Earth fault location is possible thanks to discovered relation between RF110/15 and α, whereas Y0cs allows for reliable detection of earth faults. Detection and identification are very important because it allows to increase the reliability of supply—reduce downtime and number of consumers affected by the fault. The article presents a phase to ground fault current flow for different power system configurations. At the end solution, which improves location capabilities is proposed. The solution is analyzed in PSCAD software and verified by network experiment.

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“…Despite the presented method, harmonic based methods like Zon, Volna, ZVN, YC3, etc. or symmetrical component-based i.e., negative current are used [24,25].…”

Section: Methods Of Fault Localizationmentioning

confidence: 99%

Detection and Location of Earth Fault in MV Feeders Using Screen Earthing Current Measurements

Łowczowski

Lorenc

Zawodniak³

et al. 2020

Energies

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“…Power supply systems with a fully insulated neutral, as compared to networks with other neutral modes, do not require additional capital expenditures. However, the operational costs of such networks due to their greater damage rate as well as due to the power outages, are significantly greater than those in the networks operating with other neutral modes [20,24].…”

Section: Relevancementioning

confidence: 99%

“…At present, in the distribution networks, the ground failure protection devices, responsive to the steady-state parameters of the emergency mode, which can conditionally be divided into three types: current (maximum) protection -devices that react to the zero sequence current; voltage protectiondevices that respond to the zero sequence voltage; directional protection -devices that respond to the zero sequence power [17,24,29].…”

Section: Effects Of the Neutral Mode On The Performance Of Ground-faimentioning

confidence: 99%

Analysis of the neutral grounding modes influence on the reliability characteristics of local systems with renewable energy sources

Ostapchuk¹,

Kruczek²,

Kuznetsov³

et al. 2021

Diagnostyka

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When comparing the performance indicators of electrical networks with different types of neutral grounding, along with the fulfilment of the requirement to ensure reliability of power supply to consumers, serious attention is drawn to the main network parameters influencing the performance of power supply systems. Analysis of research and its results, reported above, on the influence of the neutral ground of power networks on the reliability and electrical safety conditions of the power supply systems as a whole, on the damage of distribution networks and electrical equipment as well as on the working capacity of relay protection devices, provides an opportunity to estimate each specific operation mode of the neutral and to develop recommendations aimed at strengthening the positive indicators of the corresponding modes. Other things being equal, reliability of power supply to electrical receivers or reliability of distribution networks is mainly determined by the damage to network elements and the performance of relay protection devices. The degree of influence of these factors on the reliability of distribution networks depends on the neutral mode, which in turn determines the level of internal overvoltages and the nature of transient processes at earth fault.

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“…Experience in the operation of distribution system networks indicates that among all electrical disturbances, approximately 70% are earth faults [1]. Their intensity is relatively high and the average number of earth faults is 10-20 per 100 km over a year [2,3].…”

Section: Introductionmentioning

confidence: 99%

Novel Earth Fault Protection Algorithm Based on MV Cable Screen Zero Sequence Current Filter

et al. 2019

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This paper presents novel zero sequence current filter and earth fault protection relay, which utilize cable screens earthing current in protection algorithm. Different problems connected with state of the art of zero sequence current filters and protection relays are presented and compared with the proposed solution. The presented concept is verified in PowerFactory simulation software, experiment concerning modeling the earth fault current flow in medium voltage (MV) cable supplied from the low voltage (LV) network and measurements in the MV network in the Polish distribution system. The proposed solution is characterized by higher sensitivity and reduced number of erroneous trips. The presented solution is suitable for any MV cable lines. Biggest advantages are observed in power output lines from renewable energy sources, which are often operated under no-load conditions.

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Single Phase Earth Fault Location in the Medium Voltage Distribution Networks

Cited by 9 publications

References 2 publications

Detection and Location of Earth Fault in MV Feeders Using Screen Earthing Current Measurements

Detection and Location of Earth Fault in MV Feeders Using Screen Earthing Current Measurements

Analysis of the neutral grounding modes influence on the reliability characteristics of local systems with renewable energy sources

Novel Earth Fault Protection Algorithm Based on MV Cable Screen Zero Sequence Current Filter

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