Research on networking strategy of cluster wide area controller in cascade small hydropower and photovoltaic combined generation system

Cluster wide area controller networking strategy directly affects the efficiency and reliability of operation and control of cascade hydro- optical complementary power generation system. To solve the problems, this paper firstly introduces the communication system architecture of hydropower station and Photovoltaic Station in a cascade hydro- optical complementary power generation system, and further discusses the wide area networking strategy of cluster wide area controller and the intra-station networking strategy. Two wide- area networking strategies, peer- to- peer network and master- slave network, as well as three intra- station strategies, i.e. external control, internal control and direct control, are compared and studied. Finally, the technical routes of peer- to- peer network and internal control are determined, and the cluster wide area controller device is designed accordingly. The feasibility and timeliness of the technical scheme are verified in RTDS laboratory.