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1. (WO2017016019) HOMOLOGICAL RECOGNITION METHOD AND DEVICE FOR A WIDE AREA OF A POWER SYSTEM

Pub. No.:    WO/2017/016019    International Application No.:    PCT/CN2015/088385
Publication Date: Fri Feb 03 00:59:59 CET 2017 International Filing Date: Sat Aug 29 01:59:59 CEST 2015
IPC: H02J 3/00
Applicants: TIANJIN UNIVERSITY
天津大学
Inventors: JIA, Hongjie
贾宏杰
JIANG, Tao
姜涛
Title: HOMOLOGICAL RECOGNITION METHOD AND DEVICE FOR A WIDE AREA OF A POWER SYSTEM
Abstract:
A homological recognition method and device for a wide area of a power system. The method comprises: standardizing a wide area measurement time sequence of a power generator rotor angle in a power system; performing main component analysis on the standardized wide area measurement time sequence, and according to an accumulative contribution rate of the main components, determining the number of main components of the wide area measurement time sequence and a characteristic vector corresponding thereto; and according to plus and minus signs of elements in the selected characteristic vector, realizing the homological grouping of a power system set. The device comprises: a standardized module (1), a main component analysis module (2), an acquisition module (3) and a dividing module (4). By means of the modules, the online recognition of a power system homological group based on wide area measurement information is realized. As stated above, a power system homological group is divided completely based on wide area measurement information, thereby avoiding the influence on a homological grouping result due to the model precision and the parameter accuracy of a power system.