Estimation of the Short Circuit Ratio and the Optimal Controller Gains Selection of a VSC System
نویسندگان
چکیده
The optimal control gains of the VSC HVDC converter are very dependent on the Short Circuit Ratio (SCR) of the ac system to which the converter is connected. This paper introduces off-line SCR estimation based on pre-set switching status of the ac system. The control gains of the VSC HVDC system can be adjusted on-line to achieve optimal performance based on a calculation of the SCR. However, when a delay in changing the gain occurs, the quality of the on-line gain scheduling performance declines.
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