Evaluation of VSC Impact on Power System Using Adequate P-Q Capability Curve

Renewable energy sources, which are becoming increasingly popular, often use a voltage source converter (VSC) for connection to the power system. Assessing effects of connecting such system is essential ensure proper operation and connected source. For this purpose, it necessary know range active reactive generation by converter. The authors indicate that interaction between affects its available power. Therefore, strictly defined converter’s generating capability should not be assumed as invariant, but given operating condition determined iteratively. In order confirm thesis, analyzed VSC-based in an example using PowerFactory software. Extending calculation procedure include iterative determination showed significant influence system’s state on capabilities. results obtained work extend knowledge, thanks them, VSC systems can modelled more accurately.