Calculation and Restriction of Short-circuit Current in the Loop-closed Operation of Nansha Distribution Network
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Abstract
The calculation and restriction of short-circuit current in the loop-closed operation of distribution metwork is studied in this paper, and then is applied in Nansha distribution network. First, the calculation model of short-circuit curren in the loop-closed operation is presented. Then, taking into account the impact of short-circuit point and short-circuit form, a comprehensive calculating method of short-circuit current is given, which can provide the biggest short-circuit current. Its short-circuit point and form can be maken clear as well. Secondly, the applicability of restriction measures of short-circuit current for the loop-closed operation of distribution network is analyzed one by one. Afterwards, the principle and implementation details are determined. The calculation of reactor parameters is also presented. Finally, the proposed method is applied in the Nansha distribution metwork, the results show its feasibility and validity.
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