1.1.1.1 Protection and automatic device configuration 1 Main transformer protection device The main transformer protection adopts WBZ-500H microcomputer transformer protection device produced by Nanjing Automation Equipment General Factory. 2 500kV busbar protection 500kV Ⅰ busbar is equipped with RED-521 (1MRK 003 001-BA) protection (bus differential Ⅰ) and RCS-915E (bus differential Ⅱ) two sets of bus differential protection, 500kV Ⅱ busbar is equipped with RED-521 (1MRK 003 001-BA) protection (bus differential Ⅰ) and RCS-915E (bus differential Ⅱ) two sets of bus differential protection. 2 500kV line protection
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