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Excerpt from difficulties in electric EngineeringThis choice of difficulties has been ready for using scholars on the Massachusetts Institute of know-how, yet because the booklet can be used in different technical faculties it sort of feels most sensible to nation what flooring the issues are meant to hide. on the Institute the publication could be utilized by the 3rd 12 months scholars in electric Engineering, and through the 3rd and fourth 12 months scholars within the classes of Civil, Mechanical, Mining and Chem ical Engineering.
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Additional info for Ieee Std c37.101-1993
7, pp. 257-264, 1971. [B11] Warrington, A. R. , Protective Relays, Their Theory and Practice, vol. 1. , p. 181, 1968. , “The Protection of Large Power Station Generating Units,” Siemens Review, Feb. 1965. 3 Generator ground fault protection [B13] AIEE Committee Report, “Present Day Grounding Practices on Power Systems,” AIEE Transactions on Power Apparatus and Systems, vol. 66, pp. 1525-1548, 1947. , Kripsky, A. , “Protection of Large Alternators Connected to Step-Up Transformers Against the Consequences of Earth Faults in the Stator Winding,” CIGRE, 34-02, 1972.
5 A pickup. 9% of the winding will be protected. Since a voltage may exist at the generator neutral when a fault occurs on the high-voltage side of the generator stepup transformer, some time delay should be provided for the time overcurrent unit. Otherwise, the machine will be incorrectly tripped for a transmission system fault. 0 will usually prove to be adequate if a very inverse relay is used. 5 Relay—vt fuse coordination The sensitive relaying used to detect phase-to-ground faults on the generator stator winding will also detect phase-toground faults on the secondary leads of the voltage transformers if the voltage transformers are connected wye-wye with both neutrals grounded.
Zero-Sequence Versus Residual Ground-Fault Protection,” Power, vol. 115, no. 10, p. 97, Oct. 1971. [B2] Johnson, A. A, “Grounding Principles and Practices,” Electrical Engineer, vol. 64, pp. 92-99, Mar. 1945. [B3] Peterson, H. A, Transients in Power Systems. New York: Wiley, 1951. [B4] Peterson, H. , “Critical Analysis of Rotating Machine Grounding Practice,” General Electric Review, April 1942. [B5] Waters, M. and Willheim, R. Neutral Grounding in High-Voltage Transmission, Part 2. New York: Elsevier Publishing Co, pp.