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:
Jul. 19, 2016
Filed:
Oct. 17, 2011
Jaroslaw Krata, Mazowiecki, PL;
Arkadiusz Burek, Wieliczka, PL;
Jaroslaw Krata, Mazowiecki, PL;
Arkadiusz Burek, Wieliczka, PL;
ABB TECHNOLOGY AG, Zurich, CH;
Abstract
A method for protecting a synchronous machine () against damage caused by pole slipping in a power generating unit or a drive unit () in an electric power network is disclosed. The method measures signals of current and voltage of the synchronous machine () and assumed constant parameters to determine a disturbance (Trig_start). When a disturbance is detected, an indicator of pole slipping is determined, and the time of rotor operation with the occurrence of pole slipping is totalized. Next, if a threshold value allowed for the rotor operation with slipping proves to be valid, corresponding measures protecting the synchronous machine () against slipping are implemented. If the detection process is not fulfilled, the process of sudden disturbance and/or the process of accrued detection is conducted until the criterion of pole slipping occurrence is fulfilled for the generator mode or for the motor mode.