DocumentCode :
2328737
Title :
Calculation of three-phase harmonic power flow in power systems with traction loads
Author :
Gengyin, Li ; Chunxia, Xu ; Guanqi, Liu ; Chengyong, Zhao
Author_Institution :
Dept. of Electr. Power Eng., North China Electr. Power Univ., Hebei, China
Volume :
2
fYear :
1998
fDate :
18-21 Aug 1998
Firstpage :
1565
Abstract :
The mathematical model of an SS4 type electric locomotive, made in China, is first introduced. By considering the harmonic source as a controlled current source, a new algorithm of solving three-phase asymmetrical harmonic power flow in power systems with traction loads is presented. In this scheme, the three-phase fundamental power flow is solved by the P-Q decoupled method in which sparse and symmetrical matrix handling technology and a three-phase factor table are used; thus memory is saved and computing quantity is decreased. The three-phase harmonic power flow is directly solved by the Gaussian elimination method with a linear nodal voltage equation and thus the convergence problem does not exist. The fundamental and harmonic nodal voltage and branch current are solved by the decoupled iteration of fundamental and harmonic power flow. Computation results of some typical examples show that this algorithm can effectively save memory and has good convergence
Keywords :
electric locomotives; harmonic distortion; load (electric); load flow; power system harmonics; traction; Gaussian elimination; P-Q decoupled method; calculation algorithm; decoupled iteration; electric locomotive; harmonic source; linear nodal voltage equation; matrix handling technology; power systems; three-phase factor table; three-phase harmonic power flow; traction loads; Control systems; Convergence; Equations; Load flow; Mathematical model; Power system harmonics; Power system modeling; Sparse matrices; Symmetric matrices; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power System Technology, 1998. Proceedings. POWERCON '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4754-4
Type :
conf
DOI :
10.1109/ICPST.1998.729351
Filename :
729351
Link To Document :
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