DocumentCode :
1546614
Title :
On-Line Transient Stability Evaluation by System Decomposition-Aggregation and High Order Derivatives
Author :
Xia, Daozhi ; Heydt, Gerald T.
Author_Institution :
Xian Jiaotong University, Xian, People´s Republic of China
Issue :
7
fYear :
1983
fDate :
7/1/1983 12:00:00 AM
Firstpage :
30
Lastpage :
30
Abstract :
An on-line transient stability evaluation method is presented in this paper. Under some classical assumptions, the change of generator rotor angles during the transient period is described by a set of second order differential equations. This set of equations is solved by single-step high order derivative explicit integration. A new system decomposition-aggregation technique is proposed to decompose the power system into subsystems and then to aggregate the subsystems by interconnection boundary conditions. Based on the aggregation model, the calculation of high-order derivatives is quite efficient to reduce the requirements of both computer memory and computational time for a large scale power system. The relation of memory and execution time requirements to the system decomposition is discussed. Two systems, the IEEE 118 bus test system with 34 generators and a 293 bus system with 63 generators, are tested by simulation on a CDC-6600 computer. The results demonstrate that the proposed method is effective for on-line application and may be faster than Liapunov´s direct method.
Keywords :
Aggregates; Boundary conditions; Differential equations; Power system interconnection; Power system modeling; Power system simulation; Power system transients; Rotors; Stability; System testing;
fLanguage :
English
Journal_Title :
Power Engineering Review, IEEE
Publisher :
ieee
ISSN :
0272-1724
Type :
jour
DOI :
10.1109/MPER.1983.5518940
Filename :
5518940
Link To Document :
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