Patent · US Active

Power system

US7982442B2 · kind B2 · utility

4Cited by

8References

4Claims

0Family size

Assignee

ABB TECHNOLOGY AG · CH

Inventors

Stefan Solyom · Olofstorp, SE
Bo Lincoln · Lund, SE
Anders Rantzer · Lund, SE

Key dates

Filing date	Feb 11, 2005
Grant date	Jul 19, 2011
Priority date	—
Expiry date	Nov 15, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG05F1/14
WIPO fieldControl
WIPO sectorInstruments

Abstract

A method for voltage stabilization of an electrical power network system including a producing power network system side, a consuming power network side including a power load, a power transmission line with an impedance ZLN, a transformer and an on-line tap changer added to the transformer. The impedance of the line is measured in case of dynamic instabilities. A transformer ratio n is controlled by changing a voltage reference Vref of the on-line tap changer. The voltage reference is changed according to a feed forward compensation from the impedance of the line.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.