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	対称成分	ニュートン・ラプソン電力潮流計算
分野	電気工学	電気工学
系統	Process / pipeline	Process / pipeline
提唱年	1918	1967
提唱者	Charles Legeyt Fortescue	William F. Tinney, Charles E. Hart
種類	Decomposition method for analyzing unbalanced three-phase circuits	Iterative solution algorithm for power system steady-state analysis
原典	Fortescue, C. L. (1918). Method of symmetrical co-ordinates applied to the solution of polyphase networks. AIEE Transactions, 37(2), 1027-1044.	Tinney, W. F., & Hart, C. E. (1967). Power flow solution by Newton's method. IEEE Transactions on Power Apparatus and Systems, 86(11), 1449-1460.
別名	Symmetrical component analysis, Phase component decomposition	NR Power Flow, Newton-Raphson Load Flow
関連	3	3
概要	Symmetrical Components is a mathematical technique for analyzing unbalanced three-phase electrical circuits by decomposing them into balanced component sets. Introduced by Charles Fortescue in 1918, the method transforms the complex analysis of unbalanced systems into simpler balanced equivalent circuits. Symmetrical components are fundamental to understanding faults, protection coordination, and stability in power systems, remaining essential in modern grid operations.	The Newton-Raphson method is a powerful iterative technique for solving the nonlinear power flow equations in electrical power systems. Introduced by Tinney and Hart in 1967, it became the industry standard for computing steady-state voltage and power distributions across transmission networks. The method uses Jacobian matrix formulations to rapidly converge to the true operating point.