Abstract
This paper proposes a unified electromagnetic transient model and control strategy for the voltage source converter (VSC) based HVDC transmission. The electromagnetic transient model of the VSC AC-side in the synchronous d-q reference frame has been built; the DC-side dynamics are formulated based on the principle of instantaneous power balance, the instantaneous power absorbed by three-phase series inductors is also considered. The developed models are used to design controllers. For the purpose of control active power and reactive power separately, a decoupled controller based on feed forward compensation method has been designed. The simulation tests realized by PSCAD/EMTDC that VSC-HVDC supplying passive network and connect active network have been adopted. The proposed control system produces the best transient performance; the simulation results verify the validity of the mathematical model and the feasibility of the control strategies.
| Original language | English |
|---|---|
| Pages (from-to) | 903-908 |
| Number of pages | 6 |
| Journal | Gaodianya Jishu/High Voltage Engineering |
| Volume | 34 |
| Issue number | 5 |
| State | Published - May 2008 |
Keywords
- Control strategy
- Decouple control
- Electromagnetic transient model
- Passive network
- PSCAD/EMTDC
- VSC-HVDC