Tap changer monitoring

Details Tap changer monitoring Tap changer monitoring

2006-12-05

2006-12-05

Jackson, Stephew W. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific circuit breaker or control structure

C361S038000

Reexamination Certificate

active

07145760

ABSTRACT:
A method and means for diagnosing transformer tap changers is provided. Pressure is monitored in an insulating liquid of a tap changer for a period of time in which switching of the tap changer is carried through. Switching-related information is extracted from the pressure diagram. Quantities from pressure peaks are related to specific arcings of the switching sequence. Early error detection is achieved, whereby transformed failures may be avoided. Repeated measurements may be followed by trend evaluation. If a trend indicating tap changer problems is detected, an alarm signal is triggered. The transformer may be switched off if the pressure exceeds a predetermined emergency value. Information of the base pressure in the tap changer may be extracted and converting it to level of insulating liquid.

REFERENCES:
patent: 3173086 (1965-03-01), Kresge
patent: 5946171 (1999-08-01), Magnier
patent: 6023404 (2000-02-01), Marmonier
patent: 6215408 (2001-04-01), Léonard et al.
patent: 6446027 (2002-09-01), O'Keeffe et al.
patent: 61-018113 (1986-01-01), None
patent: 01-095505 (1989-04-01), None
patent: 02-213105 (1990-08-01), None
patent: WO 93/23760 (1993-11-01), None

Affiliated with

Also associated with

Rating

Tap changer monitoring does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tap changer monitoring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tap changer monitoring will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3716682