Passive AC network supplying the integration of CCC-HVDC and VSC-HVDC systems

Authors : Ali BIDADFAR, Mehrdad ABEDI, Mehdi KARRARI

Pages : 353-362

Doi:10.3906/elk-1207-46

View : 15 | Download : 10

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The integration of a capacitor-commutated converter insert ignore into journalissuearticles values(CCC); high-voltage direct current insert ignore into journalissuearticles values(HVDC); insert ignore into journalissuearticles values(CCC-HVDC); and voltage source converter insert ignore into journalissuearticles values(VSC); HVDC insert ignore into journalissuearticles values(VSC-HVDC); is proposed in this paper to supply entirely passive AC networks. The key point of this integration is the flat characteristic of the DC voltage of the CCC-HVDC, which provides the condition for the VSC to connect to the CCC DC link via a current regulator. The advantages of the proposed combined infeeding system are the requirement of only one DC line, and better dynamic responses. The structure of the proposed infeeding system, as well as its control system, is studied. Simulation results are provided to validate the effectiveness of the proposed system and its control strategy. Two other schemes for infeeding AC passive networks are studied to demonstrate the advantages of the proposed system.
Keywords : Capacitor commutated converter, HVDC, voltage source converter, passive network