System and method for regulation of voltage on an electric power system

power-systems
An on-load tap changer (OLTC) controller that estimates downstream bus voltages from measured power and current through the transformer and dynamically adjusts the tap position to maintain grid voltage within specified bounds.
Authors

Eva-Maria Baerthlein

Eva Bernal Serra

Marianne Luise Susanne Hartung

Ara Panosyan

Luca Parolini

Published year

2016

Inventors
Eva-Maria Baerthlein, Eva Bernal Serra, Marianne Luise Susanne Hartung, Ara Panosyan, Luca Parolini
Patent no.
Assignee
GE Vernova Infrastructure Technology LLC

Abstract

An electric power system includes an OLTC transformer including a plurality of primary and secondary windings inductively coupled to each other. The electric power system includes at least one on-load tap changer coupled to at least one of the primary and secondary windings that is selectively configurable to regulate the portion of the primary and secondary windings inductively coupled to each other. The electric power system also includes a plurality of buses coupled to the transformer and are positioned downstream therefrom. The electric power system further includes at least one processor coupled to the tap changer configured to regulate a voltage bandwidth of the tap changer as a function of estimated voltage values of at least one bus as estimated based on a priori values of power/current transmitted through each bus. The a priori values are substantially based on measured power/current transmission through the on-load tap changer.

Filings

Jurisdiction Kind Application / Publication no. Date
US Application US15/269,110 2016-09-19
EP Application EP17189911.5A 2017-09-07
US Publication US20180081380A1 2018-03-22
US Grant US10048709B2 2018-08-14

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