ELECTRIC POWER RESEARCH INSTITUTE. CHINA SOUTHERN POWER GRID;POWER GRID TECHNOLOGY RESEARCH CENTER. CHINA SOUTHERN POWER GRID
发明人:
WU, Wei,RAO, Hong,HONG, Chao,LIU, Yongjun
申请号：
WO2016CN99787
公开号：
WO2018006499(A1)
申请日:
2016.09.23
申请国别(地区):
世界知识产权组织国际局
年份:
2018
代理人:
摘要：
The present invention relates to a dominant instability mode identification method and system for a power system. The method comprises: determining, by means of a wide-area measurement system, a connecting line where a disturbed system oscillation center is located; extracting dynamic characteristic information about the connecting line from measurement data; calculating a first component and a second component of a complex power variation of the sending end of the connecting line according to the dynamic characteristic information; calculating an identification parameter of the dominant instability mode according to the first component and the second component; and determining, based on the identification parameter, a dominant instability mode of a system when transient-state power-angle instability and transient-state voltage instability phenomena occur simultaneously. In the present invention, the connecting line of an oscillation center is determined by means of wide-area measurement information after a s
