The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2011
Filed:
Oct. 27, 2008
Fei Huang HU, Shanghai, CN;
Jian Duo LI, Shanghai, CN;
Guang Qiang Tang, Shanghai, CN;
Ting Xie, Shanghai, CN;
Yi Gang Yu, Shanghai, CN;
Yue Zhuo, Beijing, CN;
Fei Huang Hu, Shanghai, CN;
Jian Duo Li, Shanghai, CN;
Guang Qiang Tang, Shanghai, CN;
Ting Xie, Shanghai, CN;
Yi Gang Yu, Shanghai, CN;
Yue Zhuo, Beijing, CN;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
At least one embodiment of the present invention provides a method for detecting voltage disturbance. In at least one embodiment the method includes storing the digitized point values of a voltage reference waveform; detecting actual voltage values, and converting the actual voltage values by digitization into point values of the actual voltage which are in one-to-one correspondence with the point values of the reference waveform; comparing the point values of the actual voltage with the corresponding point values of the reference waveform; judging that a voltage disturbance occurs if, for N successive points, the differences between the point values of the actual voltage and the corresponding point values of the reference waveform are all greater than a predetermined disturbance threshold, wherein N is an integer greater than 0. A technical solution of the present invention improves the response speed of the detection, and shortens the response time.