A high-reliability dc distribution network topology

DC distribution network topology includes: chain structure, two-terminal structure and ring structure. This paper firstly introduces a device of Flexible Alternative Current Transmission System: static synchronous series compensator with fault current limiting. DC distribution network with SSSC-FCL can develop the power quality of distribution network and improve the stability. When the fault occurs, the SSSC-FCL can effectively limit the short circuit current to ensure the safety of system. And then this paper also introduces the main advantages of the DC distribution network and the topology, basic control methods of SSSC-FCL. Finally put forward a DC distribution network topology structure with SSSC-FCL. With the use of PSCAD/EMTDC to model and simulate the DC distribution network, the result of the simulation verified the feasibility and effectiveness of the DC network topology structure with SSSC-FCL.

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