Fig 1.
Hybrid AC/VSC-HVDC system integrated with DFIG structure.
Fig 2.
Optimization principle of CBAS algorithm.
Fig 3.
Optimization process of CBAS algorithm.
Fig 4.
The conventional LL+AVR controller of synchronous generator structure.
Fig 5.
The overall control structure of DFIG.
Fig 6.
Control structure of VSC-HVDC system.
Fig 7.
Overall control flow for hybrid AC/VSC-HVDC system integrated with DFIG.
Table 1.
System parameters.
Table 2.
Parameters of four algorithms.
Fig 8.
Comparison of the best convergence performance of four algorithms obtained in 10 runs.
Fig 9.
Statistical results of fitness function acquired in 10 runs (in p.u.).
Table 3.
Optimized controller gains.
Fig 10.
System responses acquired under the three-phase short-circuit fault.
Fig 11.
System responses obtained under load disconnection.
Fig 12.
System responses obtained under DFIG loss.
Table 4.
Statistical results of convergence performance acquired by four algorithms in 10 runs.
Table 5.
Statistical results of fitness function acquired by four algorithms in 10 runs (in p.u.).
Table 6.
IAE indices of five algorithms acquired in three cases (in p.u.).
Nomenclature.