''Decoupled method'' for studying large interconnected grounding systems using microcomputers - Part II - Utilization on Itaipu ground system and complementary aspects

Journal Article · Sat Oct 01 04:00:00 EDT 1988 · IEEE Trans. Power Del.; (United States)

DOI:https://doi.org/10.1109/61.193954· OSTI ID:6799122

Sobral, S T ^[1]; Fleury, V G.P.; Villalba, J R ^[2]; Mukhedkar, D ^[3]

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1. IESA - Internacional de Engenharia S.A., Rio de Janeiro (BR)
2. ITAIPU BINACIONAL, Rio de Janeiro (BR)
3. Ecole Polytechnique, Montreal (CA)

This paper describes the use of the ''Decoupled Method'' (See Part I) for studying and detailing important facilities of the ground system of the Itaipu Generating Complex (13000 MW), including 4 large nearby substations, interconnected by the ACSR ground-wires of several 500kV and 220kV transmission lines. Of permanent importance was the reduction of ground potential obtained by the utilization of lines with ACSR ground-wires on the spans near the substations. This paper also presents the theoretical justification for the ''decoupling technique'' used as the Step No. 4 of the ''Decoupled Method''. It is also shown that the subdivision of the fault current into two components (''self-neutralized'' and ''non-neutralized'' components) together with the concepts of ''virtual circuit'' and ''real circuit'' as used in the method, are powerful analytical tools for the electrical engineers dealing with the design and performance of ground systems.

• OSTI ID: 6799122
• Journal Information: IEEE Trans. Power Del.; (United States), Journal Name: IEEE Trans. Power Del.; (United States) Vol. 3:4; ISSN ITPDE
• Country of Publication: United States
• Language: English

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ANALYTICAL SOLUTION
CABLES
COMPUTERS
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DECOUPLING
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