Patent · US Active

Monitoring an electrical power supply network

US9804209B2 · kind B2 · utility

1Cited by

1References

11Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Andreas Litzinger · Fürth, DE
Stefan Piel · Essen, DE

Key dates

Filing date	Feb 29, 2012
Grant date	Oct 31, 2017
Priority date	—
Expiry date	Feb 22, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY04S10/40
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and a device are provided for monitoring an electrical power supply network. A temporal frequency change value is determined for at least two sections or for at least two points of the power supply network. The frequency change value indicates the respective temporal frequency change of the network frequency. A conclusion is drawn regarding a possible islanding within the power supply network, and a warning signal which indicates the possible islanding within the power supply network is generated when the difference between the frequency change values, exceeds a predetermined frequency change threshold value.

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