The Complex Torque Coefficient Applied in Subsynchronous Oscillation Caused by HVDC

2019 The 5th International Conference on Electrical Engineering, Control and Robotics

无线电电子学;计算机科学

Zhang, Hanhua^1 ; Li, Jiaqi^2 ; Wen, Jun^2 ; Zhang, Shuang^1 ; Tian, Bei^1

State Grid, Ningxia Electric Power Research Institute, Ningxia

750002, China^1

North China Electric Power University, School of Electric and Electronics Engineering, Beijing

102206, China^2

关键词: Mathematical calculations;    Method of complex;    Power station;    PSCAD/EMTDC;    Simulation model;    Sub-synchronous oscillations;    Torque coefficient;    Unstable state;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/533/1/012004/pdf
DOI  :  10.1088/1757-899X/533/1/012004

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Subsynchronous oscillation is an unstable state in power system, which may damage rotors of turbine generators and break the steady operation of the power system. In China, some accidents of subsynchronous oscillations had happened in the power stations where there are HVDC projects nearby. So that it is necessary to study the Subsynchronous oscillation caused by HVDC. After analysis of the principle of subsynchronous oscillation, the mathematical calculation model of the system containing HVDC is built and analysed in method of complex torque coefficient. And the simulation model is established in PSCAD/EMTDC to prove the validation of the method of complex torque coefficient used for the system containing HVDC, which combines calculation and simulation of the method for the system.