Field Tests of the 345-KV Shunt Reactor Compensated Fort Thompson-Grand Island Line,Pick-Sloan Missouri Basin Program,

摘要

Field tests were conducted on the Bureau's 241.7-mile, 345-kv shunt reactor compensated,Fort Thompson-Grand Island Line to evaluate line switching performance and relay protection-a scheme using dual-channel direct underreaching transferred tripping with solid-state relays and permissive underreaching transferred tripping with electromechanical relays. Conclusions are that the line can be switched satisfactorily from either terminal provided the low-voltage air core reactors are in service at each station. No ferroresonance or overvoltage problems were encountered during switching tests. Except for trouble in one transfer trip receiver,later corrected,the dual-channel direct underreaching transferred trip relaying and the permissive underreaching transferred trip relaying operated in accordance with design requirements. Tables and a summary of the tests and information on peak fence-line voltages during the tests are presented. (Author)