Analysis of high neutral current in three-phase four-wire multi-grounded distribution feeders

Chang, G.W.; Chiu, Min-Yen; Lee, K.S.; Hsu, Yu‐Ling

doi:10.1109/tdc.2003.1335330

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…The electric potential transfer issue is also typical of medium-voltage multigrounded lines; the shock hazard is there propagated by a multigrounded neutral conductor, and the voltage which can affect customers and animals is referred to as 'neutral to earth voltage' [7][8][9][10]. Another aspect is that the voltages on the neutral conductor (which are due to the fault in the medium-voltage line) can induce fault voltages in the low-voltage system [2,11,12].…”

Section: Introductionmentioning

confidence: 99%

Reducing effect of multigrounded PEN conductor on the transfer of electric potentials in low‐voltage distribution networks

Konieczny

Wróblewski

2007

Int Trans Elec Energy Syst

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SUMMARYThe mechanism governing the formation of the electric potential of the PEN conductor (fault voltage) in TN-system is discussed. The occurrence of this potential is a threat to the customers, especially in rural areas, where automatic disconnection of supply can not always be executed within the time required. Considered is the phenomenon of electric potential propagation from the fault point to the whole of the network.For fault voltage calculations, a mathematical model and computer programme have been developed. Examples of calculated results are presented for various configurations of network. Multicriterion-based simulation has enabled statistical analysis and assessments of the size of the area where fault voltage exceeds the admissible value. The computational method proposed is also applicable to the optimization of low-voltage networks at the stage of design or modernization.

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