DocumentCode :
3581098
Title :
Analysis on damping characteristics of subsynchronous oscillation in Hulunbuir power plant
Author :
Gao Feng ; Wu Yunsheng ; Jiang Guifen ; Gong Zheng ; Zhu Xinyao ; Sun Haishun
Author_Institution :
Ningxia Electr. Power Res. Inst., Yinchuan, China
fYear :
2014
Firstpage :
1
Lastpage :
6
Abstract :
Since Hulunbuir-LiaoNing HVDC transmission project was put into operation, low amplitude subsynchronous oscillation had occurred frequently and exceedingly in Hulunbuir power plant, such problem was of serious concern to power plant and power system operators. This paper calculated the complex torque coefficients of the units in Hulunbuir power plant using complex torque coefficient method based on Complex Frequency Domain Port-equivalence Conductance Matrix (CPCM), analyzed the subsynchronous oscillation damping characteristics, built the simulation model of Hulunbuir AC-DC hybrid power system based on PSCAD/EMTDC, and verified the effectiveness of the analysis results using time-domain simulation method. Theoretical analysis and simulation results showed that the units´ subsynchronous damping characteristics in Hulunbuir power plant were weak, therefore subsynchronous oscillation was easily stimulated by system disturbance but the convergence was weak. Analysis results can adequately explain why low amplitude subsynchronous oscillation had occurred frequently and exceedingly in Hulunbuir power plant.
Keywords :
AC-DC power convertors; HVDC power convertors; HVDC power transmission; electric admittance; frequency-domain analysis; matrix convertors; power generation reliability; power system simulation; time-domain analysis; wind power plants; CPCM; Hulunbuir AC-DC hybrid power system disturbance; Hulunbuir power plant; Hulunbuir-LiaoNing HVDC transmission project; complex frequency domain port-equivalence conductance matrix; complex torque coefficient method; power system operator; subsynchronous oscillation damping characteristics analysis; time-domain simulation method; weak convergence; Analytical models; Damping; HVDC transmission; Oscillators; Power generation; Shafts; Torque; AC/DC power system; PSCAD/EMTDC; complex torque coefficient method; subsynchronous oscillation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2014 IEEE PES Asia-Pacific
Type :
conf
DOI :
10.1109/APPEEC.2014.7066114
Filename :
7066114
Link To Document :
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