Abstract
In order to reveal the relationship between the performance of the control system and the inverter side key operating parameters under the faults of AC bus, the firing angle advance and its duration on the inverter side, as well as the extinction angle reference value increase and its duration are considered, and their effects on the stability and dynamic performance of HVDC transmission control system are analyzed. In this paper, appropriate stability and dynamic performance indexes are proposed, and their rationality and discrimination are verified. Based on the transfer function model of inverter side constant extinction angle control, the influence of control parameters on stability is analyzed. Then, based on the CIGRE benchmark model of HVDC, the simulation and dynamic performance impact analysis are carried out in PSCAD/EMTDC, and the discrete data of simulation is processed by surface fitting through MATLAB. The results show that the stability of the control system will be reduced by increasing the firing angle. Besides, increasing the firing angle can improve the dynamic performance. Finally, the increase of the extinction angle reference value is beneficial to increase the extinction area of the commutation process, but too large is harmful to the economy and safety reliability of the system.
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