A new and efficient algorithm for short-circuit calculation in distribution networks with distributed generation

Author

Tristiu, Ion ; Bulac, Constantin ; Costinas, Sorina ; Toma, Lucian ; Mandis, Alexandru ; Zabava, Tudor

Author_Institution

Power Eng. Fac., Univ. Politeh. of Bucharest, Bucharest, Romania

fYear

2015

fDate

7-9 May 2015

Firstpage

816

Lastpage

821

Abstract

This paper presents a new algorithm for short-circuit currents calculation in distribution networks in which distributed generators are connected. The specifications of the IEC 60909 Standard are applied, in which the fault is replaced by an equivalent voltage source. The algorithm consists in two steps: a forward sweep, in which the aggregated impedances between each bus and the neutral point are calculated, and the backward sweep, in which the short-circuit currents flowing in the network branches are determined. The IEEE 33 bus test network is used for numerical calculations, considering 5 distributed generators.

Keywords

IEC standards; distributed power generation; power distribution faults; power distribution reliability; power generation faults; power generation reliability; short-circuit currents; IEC 60909 Standard; IEEE-33 bus test network; aggregated impedance; backward sweep; distributed generation; distributed generators; distribution networks; forward sweep; network branch; neutral point; numerical calculation; short-circuit current calculation; Algorithm design and analysis; Circuit faults; Fault location; Generators; IEC standards; Impedance; Short-circuit currents; distributed generation (DG); distribution network; short-circuit calculation algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Topics in Electrical Engineering (ATEE), 2015 9th International Symposium on

Conference_Location

Bucharest

Type

conf

DOI

10.1109/ATEE.2015.7133915

Filename

7133915