The Analysis On Protection Configuration Of Smart Substation

Advance as smart substation construction and renovation, to determine intelligent substation equipment configuration, system architecture, the integrated application of new technologies in smart substation, the need for further in-depth study of intelligent substation substation to complete than conventional substation range deeper, more complex level of information collection and information processing. The three two networks of intelligent substation design, focusing on the analysis of relay protection in the Intelligent Substation Networking under, also the smart substation station control integration and advanced applications discussion and analysis, and put forward some suggestions for engineering applications.Discussion and analysis of the structure of the three two networks of different voltage levels networking determine networking In addition to the higher voltage level GOOSE, SV network the separate dual network networking different voltage levels; analysis than common low voltage level networking and unified networking GOOSE, SV way. The transformer, merging unit, the configuration of the intelligent terminal and for each networking, obtained the configuration scheme of the various voltage levels, and an important protective the direct mining Point-to-point analyzed.Network formation, specific analysis of the main transformer protection configuration, according to the main transformer protection reliability and fast to determine the protection are used the direct mining Point-to-point configuration, reliable and fast main transformer protection sub-blocking bus couplerprepared from the cast, the the hop bus coupler section switch network tripping, non-power protection configuration analysis, protection devices in place each side of the switch configuration using hard-wired way action with the main transformer. Analysis on transmission line protection, line longitudinal protection using direct mining Point-to-point need to take the same protective device configuration, intelligent station and conventional station between the longitudinal protection, the same clock, and just like the primary equipment to solve the electronic transformer sampling difference between the conventional transformer. Lower voltage level line protection can be monitoring and control, protection, merged cells, intelligent terminal integrated circuit protection device. The busbar protection also used the direct mining Point-to-point way atresia prepared from the cast signal can be transmitted over the network can be used for bus protection interval more distributed bus protection. Frequency and under voltage load shedding to protect and transfer equipment configuration analysis, network mining the configuration of the network jump.Finally, the practical application of the substation site, information integration platform of intelligent substation monitoring and sequence control, remote maintenance, and analysis of advanced applications such as intelligent alarm and fault diagnosis.