The mho distance relay

THE NEED for more adequate discrimination by means of distance relays, between fault conditions and power swings has been heightened in recent years by the construction of longer transmission lines and by the transmission of larger amounts of energy over existing lines.

[1]  Edith Clarke.  Impedances Seen by Relays During Power Swings With and Without Faults , 1945, Transactions of the American Institute of Electrical Engineers.

[2]  A. R. van C. Warrington,et al.  The MHO-Carrier Relaying Scheme A Simplified Carrier Scheme for Long or Heavily Loaded Transmission Lines , 1944, Transactions of the American Institute of Electrical Engineers.

[3]  A. R. van C. Warrington,et al.  Application of the ohm and mho principles to protective relays , 1946, Electrical Engineering.

[4]  E. E. George,et al.  Performance Requirements for Relays on Unusually Long Transmission Lines , 1943, Transactions of the American Institute of Electrical Engineers.

[5]  A. R. C. Van Warrington.  Protective relaying for long transmission lines , 1943, Electrical Engineering.