Power flow (load flow) analysis is the steady-state study of an electrical power network that determines the voltage magnitude and phase angle at every bus given specified generation and load, treating the system as quasi-static over short time intervals. The formulation relates real and reactive power injections at each bus to bus voltages and the network admittance matrix, producing a system of nonlinear algebraic equations classified by bus type (slack, PV, PQ) and solved iteratively (e.g., Gauss-Seidel, Newton-Raphson, and decoupled variants). This is a foundational technique in power systems engineering, underlying planning and operational studies such as short-circuit and transient-stability analysis.
Power flow (load flow) analysis is the steady-state study of an electrical power network that determines the voltage magnitude and phase angle at every bus given specified generation and load, treati…