Fault Detection Algorithm for Multi-terminal LCC HVDC Interconnected Grid

[摘要] The protection of Multi-terminal DC (MTDC) system is not straightforward. This paper proposes a novel protection technique for the proposed configuration topology of interconnection project between Egypt and Saudi Arabia. The proposed scheme depends on the second derivative of dc line current with the time which represents the acceleration of dc current with the time. A model of three-terminal Line Commutated Converter (LCC) MTDC with polarity reversing availability is used to study fault behavior and apply the proposed algorithm to detect and classify the fault. The proposed scheme is evaluated via an extensive simulation study for 500kV dc transmission network using Matlab

[发布机构] Department of Electrical Machine and Power Engineering, Faculty of Engineering, Helwan University at Helwan, Egypt^1

[效力级别] 电工学

[关键词] 500kv DC transmission;Configuration topology;Extensive simulations;Fault detection algorithm;Interconnected grid;Interconnection projects;Line commutated converter (LCC);Protection techniques