TW200520340A - Method and system to detect the independent operation of distributed power-generation system - Google Patents
Method and system to detect the independent operation of distributed power-generation systemInfo
- Publication number
- TW200520340A TW200520340A TW092133947A TW92133947A TW200520340A TW 200520340 A TW200520340 A TW 200520340A TW 092133947 A TW092133947 A TW 092133947A TW 92133947 A TW92133947 A TW 92133947A TW 200520340 A TW200520340 A TW 200520340A
- Authority
- TW
- Taiwan
- Prior art keywords
- power
- signal
- frequency
- independent operation
- current
- Prior art date
Links
- 238000010248 power generation Methods 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000002045 lasting effect Effects 0.000 abstract 1
- 230000001052 transient effect Effects 0.000 abstract 1
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention provides a method and system to detect the independent operation of distributed power-generation system. The distributed power-generation system has a power-generation source connected to an independent power-distribution system through the first current-shunt breaker. The detection method of the present invention is to first read the voltage signal or frequency signal on the independent power-distribution system, and convert the voltage or frequency signal by wavelet transform, so as to form a time versus high-frequency-component window and a time versus low-frequency-component window for detecting the perturbation signal in the transient time domain of signal. Then determine if the absolute value of the high-frequency component is larger than a threshold and the lasting period exceeds a threshold time. If yes, the independent operation has occurred, the system of the present invention generates an alarm signal to the first current-shunt breaker immediately, so as to drive the first current-shunt breaker to trip away, and disconnect the power-generation source and the power-distribution system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW92133947A TWI239131B (en) | 2003-12-02 | 2003-12-02 | Independent operation detecting-method of the distributive power generation system and its system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW92133947A TWI239131B (en) | 2003-12-02 | 2003-12-02 | Independent operation detecting-method of the distributive power generation system and its system |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200520340A true TW200520340A (en) | 2005-06-16 |
TWI239131B TWI239131B (en) | 2005-09-01 |
Family
ID=37001203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW92133947A TWI239131B (en) | 2003-12-02 | 2003-12-02 | Independent operation detecting-method of the distributive power generation system and its system |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI239131B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI418809B (en) * | 2010-01-20 | 2013-12-11 | Univ Nat Kaohsiung Applied Sci | Isolation operation detection method for mains voltage control type electric energy converter |
TWI418827B (en) * | 2010-01-20 | 2013-12-11 | Univ Nat Kaohsiung Applied Sci | Isolation operation detection method of electric current control type electric current converter |
TWI464994B (en) * | 2012-03-21 | 2014-12-11 | Univ Nat Sun Yat Sen | Distributed power generation system with seamlessly grid-connected transition and method for implementing grid-connected transition for distributed power generation system |
TWI729144B (en) * | 2016-05-30 | 2021-06-01 | 美商明亮光源能源公司 | Thermophotovoltaic electrical power generator, network thereof and methods for the forgoing |
-
2003
- 2003-12-02 TW TW92133947A patent/TWI239131B/en not_active IP Right Cessation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI418809B (en) * | 2010-01-20 | 2013-12-11 | Univ Nat Kaohsiung Applied Sci | Isolation operation detection method for mains voltage control type electric energy converter |
TWI418827B (en) * | 2010-01-20 | 2013-12-11 | Univ Nat Kaohsiung Applied Sci | Isolation operation detection method of electric current control type electric current converter |
TWI464994B (en) * | 2012-03-21 | 2014-12-11 | Univ Nat Sun Yat Sen | Distributed power generation system with seamlessly grid-connected transition and method for implementing grid-connected transition for distributed power generation system |
TWI729144B (en) * | 2016-05-30 | 2021-06-01 | 美商明亮光源能源公司 | Thermophotovoltaic electrical power generator, network thereof and methods for the forgoing |
Also Published As
Publication number | Publication date |
---|---|
TWI239131B (en) | 2005-09-01 |
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