ON-LINE MONITORING SWITCH CONTACT LIFESPAN OF ON-LOAD TAP-CHANGER IN TRANSFORMERS
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
N/A
app pub date -
Dec 4, 2013
filing date -
Nov 30, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A device and a method are described for online monitoring the lifespan of switch contacts of a transformer on load tap changer (OLTC). The method includes connecting a current signal sensor of a voltage adjustment winding of the power transformer with a current signal processing circuit thereof; connecting the current signal sensor with an analog-digital converter of an industry control computer (IPC). When a switch signal is received, the switch current value and the number of switching operation of the OLTC are used for comparison with a lifespan relationship as a function of number of switch operations of a switch contact having similar specifications, wherein the relationship indicates a critical current value indicating the need for replacement. The device includes the IPC, the signal processing circuit, a monitor, and a keyboard.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully