手法を比較

	電力系統における故障解析	スマートグリッドの状態推定
分野	電気工学	電気工学
系統	Process / pipeline	Process / pipeline
提唱年	1918	1970s
提唱者	Charles Fortescue	Power systems engineering community
種類	Computational pipeline	Computational pipeline
原典	Fortescue, C. L. (1918). Method of symmetrical coordinates applied to the solution of polyphase networks. Transactions of the AIEE, 37(2), 1027-1044.	Abur, A., & Exposito, A. G. (2004). Power System State Estimation: Theory and Implementation. Marcel Dekker.
別名	short-circuit analysis, fault current calculation, symmetrical components method	state estimation, network state estimation, grid state assessment
関連	4	4
概要	Fault analysis determines the magnitude and distribution of currents and voltages during abnormal conditions in power systems, such as short circuits. Using Fortescue's symmetrical components method (1918), engineers calculate fault currents to design protection relays and equipment ratings. It is essential for ensuring safe and reliable power system operation.	Power system state estimation infers the real-time voltage and phase angle at every bus in a power network from redundant measurements of power flows and voltages. It is the foundation of modern grid operations, enabling real-time monitoring, contingency analysis, and optimal control. Advanced state estimation with synchronized phasor measurements (synchrophasors) enables faster control and detection of instabilities.