TW200516826A - A method and a device for rapidly detecting abnormal voltage on a static transfer switch - Google Patents
A method and a device for rapidly detecting abnormal voltage on a static transfer switchInfo
- Publication number
- TW200516826A TW200516826A TW092131615A TW92131615A TW200516826A TW 200516826 A TW200516826 A TW 200516826A TW 092131615 A TW092131615 A TW 092131615A TW 92131615 A TW92131615 A TW 92131615A TW 200516826 A TW200516826 A TW 200516826A
- Authority
- TW
- Taiwan
- Prior art keywords
- voltage
- transfer switch
- rapidly detecting
- detecting abnormal
- static transfer
- Prior art date
Links
- 230000002159 abnormal effect Effects 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- 230000003068 static effect Effects 0.000 title abstract 2
- 230000005611 electricity Effects 0.000 abstract 1
Abstract
The present invention relates to a method and a device for rapidly detecting abnormal voltage on a static transfer switch. The three-phase voltage is firstly converted to a root-mean square signal (Vrms) in which the negative order component, high frequency harmonic and noises are filtered out. The filtered signal is then compared to a reference voltage to determine whether the three-phase voltage is normal. When a three-voltage is abnormal, the detected result will actuate a switching element to change to a backup power system thus continuing to supply electricity to the load. Since the negative order component contained in the root-mean square signal (Vrms) had been filtered before being compared to the reference voltage, the required time for the comparing process is short, and meanwhile the determining accuracy is good.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW92131615A TWI239133B (en) | 2003-11-12 | 2003-11-12 | A method and a device for rapidly detecting abnormal voltage on a static transfer switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW92131615A TWI239133B (en) | 2003-11-12 | 2003-11-12 | A method and a device for rapidly detecting abnormal voltage on a static transfer switch |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200516826A true TW200516826A (en) | 2005-05-16 |
TWI239133B TWI239133B (en) | 2005-09-01 |
Family
ID=37001205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW92131615A TWI239133B (en) | 2003-11-12 | 2003-11-12 | A method and a device for rapidly detecting abnormal voltage on a static transfer switch |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI239133B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI425225B (en) * | 2006-12-22 | 2014-02-01 | Gen Electric | A fault position detection system and method for a power transmission line |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100091419A1 (en) | 2008-10-15 | 2010-04-15 | Vedula Sastry V | Motor drive ground fault detection |
-
2003
- 2003-11-12 TW TW92131615A patent/TWI239133B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI425225B (en) * | 2006-12-22 | 2014-02-01 | Gen Electric | A fault position detection system and method for a power transmission line |
Also Published As
Publication number | Publication date |
---|---|
TWI239133B (en) | 2005-09-01 |
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Legal Events
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MK4A | Expiration of patent term of an invention patent |