**5. Conclusion**

The stable and economical planning of OWF with HVDC grid connection is quite important for the future power systems. This chapter proposed a new method, where the application of PST ensures the blackstart and stable operation of the OWF with DRU-HVDC link. Applying the proposed method, no modification of the wind turbine controllers and onshore VSC-HVDC controllers are necessary. Moreover, since the PST is located onshore, it reduces the maintenance, operation, and installation costs of the PST.
