Improving transformer tap changer processing in distribution state estimators

Author

Ruiz-García, O.M. ; Gómez-Expósito, A. ; de la Villa, Agustin ; Romero, E. ; Trebolle, D.

fYear

2008

fDate

5-7 May 2008

Firstpage

756

Lastpage

761

Abstract

Union Fenosa Distribucion, a Spanish distribution utility, is developing a state estimator tool intended for off-line applications. Its main goal is to produce realistic base cases at the sub-transmission and distribution levels, allowing systematic network studies to be undertaken. From this experience, a detailed research work has been carried out regarding the best way of dealing with automatic tap changer settings, no matter if tap measurements are available or not. This paper reports preliminarily on the heuristic procedures developed for this purpose, showing by means of a case study the improved results provided by the state estimator.

Keywords

distribution networks; on load tap changers; power system state estimation; Spanish distribution utility; Union Fenosa Distribucion; automatic transformer tap changer processing; distribution state estimators; distribution systems; heuristic procedures; inequality constraints; off-line applications; sub-transmission levels; systematic network; Companies; Information resources; Information retrieval; Iterative algorithms; Load flow; Load flow analysis; Redundancy; Software tools; State estimation; Voltage; distribution systems; inequality con-straints; state estimation; tap changers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrotechnical Conference, 2008. MELECON 2008. The 14th IEEE Mediterranean

Conference_Location

Ajaccio

Print_ISBN

978-1-4244-1632-5

Electronic_ISBN

978-1-4244-1633-2

Type

conf

DOI

10.1109/MELCON.2008.4618526

Filename

4618526