Title :
Dynamic Modeling and Transient Simulation for VSC based HVDC in Multi-Machine System
Author :
Chao, Zheng ; Xiaoxin, Zhou ; Ruomei, Li
Author_Institution :
China Electr. Power Res. Inst., Beijing
Abstract :
Voltage source converter (VSC) based high voltage direct current (HVDC) technology, abbreviated as VSC-HVDC, is a new and attractive transmission technology. With switch device having turn-on and turn-off capability, such as IGBT, VSC-HVDC has special characteristics comparing to conventional HVDC. Some of these characteristics are: passive ac load can be supplied; active and reactive power can be controlled separately and simultaneously; no requirement for fast communication between VSC stations. Based on the method of current injection at the ac bus of voltage source converter, the detailed dynamic model for VSC- HVCD is developed. This model includes three parts, i.e. the quasi-steady model for the ac side of voltage source converter, the dynamic model for VSC-HVDC inner dc system and the model for VSC-HVDC control system. With the help of User Program Interface function provided by Power System Analysis Software Package (PSASP/UPI), the transient simulation algorithm for VSC-HVDC is designed. Simulation results for multi-machine system with VSC-HVDC has verified the developed VSC-HVDC dynamic model and the designed transient simulation algorithm. Simulation results also show that with the active and reactive power control capability, not only the steady-state power flow can be controlled, but the system damping characteristic of low-frequency oscillation can be improved.
Keywords :
HVDC power transmission; insulated gate bipolar transistors; power system analysis computing; power system transients; user interfaces; IGBT; VSC based HVDC; dynamic modeling; high voltage direct current technology; multi-machine system; power system analysis software package; transient simulation; user program interface function; voltage source converter; Algorithm design and analysis; Converters; HVDC transmission; Power conversion; Power system dynamics; Power system modeling; Power system simulation; Power system transients; Switches; Voltage; Damping controller; Dynamic modeling; HVDC; Lowfrequency oscillation; Power control; Transient simulation; Voltage Source Converter (VSC);
Conference_Titel :
Power System Technology, 2006. PowerCon 2006. International Conference on
Conference_Location :
Chongqing
Print_ISBN :
1-4244-0110-0
Electronic_ISBN :
1-4244-0111-9
DOI :
10.1109/ICPST.2006.321603