Voltage Security Assessment on Unbalanced Multiphase Distribution Systems

Author

Ramos de Araujo, Leandro ; Ribeiro Penido, Debora Rosana ; Rezende Pereira, Jose Luiz ; Carneiro, Sandoval

Author_Institution

Dept. of Electr. Eng., Fed. Univ. of Juiz de Fora, Juiz de Fora, Brazil

Volume

30

Issue

6

fYear

2015

fDate

Nov. 2015

Firstpage

3201

Lastpage

3208

Abstract

This paper presents a multiphase continuation power flow (MCPF) methodology to perform voltage security analyses on unbalanced multiphase distribution systems. The proposed tool includes comprehensive models of most network components, and allows for explicit representation of neutral cables and grounding connections. The methodology has been validated through comparisons with a commercial software and with results available in the literature. Additional analyses are presented using the IEEE 4-bus, the Neutral-to-Earth (NEV) and the IEEE 8500 Test Systems. These systems have been developed to present several challenges to distribution systems analytical tools. In particular, the influence of the 3-phase transformer connections on the PV curves have been demonstrated and has been useful to stress the importance of a complete system representation.

Keywords

distribution networks; load flow; multiphase flow; power system security; 3-phase transformer connections; IEEE 4-bus; IEEE 8500 test systems; MCPF methodology; NEV; multiphase continuation power flow methodology; multiphase distribution systems; neutral cables representation; neutral-to-earth; voltage security analyses; voltage security assessment; Distributed power generation; Grounding; Jacobian matrices; Load flow analysis; Load modeling; Stability analysis; Continuation power flow; distribution system unbalances; multiphase systems; voltage security;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/TPWRS.2014.2370098

Filename

6979283