Patent · US Expired

Method and arrangement for detecting short-circuits in circuit branches of electrical power system networks

US5345180A · kind A · utility

16Cited by

7References

15Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Reinhard Maier · Herzogenaurach, DE
Walter Roethlingshoefer · Reutlingen, DE

Key dates

Filing date	Mar 30, 1993
Grant date	Sep 6, 1994
Priority date	—
Expiry date	Mar 30, 2013

Classification

Technology area (CPC H)Electricity
CPC primaryH02H3/066
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

According to the present invention, a pulse of short duration is generated from system voltage and is applied to a circuit branch being tested. The resulting current is measured and subjected to a comparative evaluation. The corresponding arrangement has a power semiconductor circuit for generating the testing pulse from the system voltage. Preferably, a so-called GTO (Gate Turn-Off thyristor) is used for this purpose.

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