Loadflow solution by applying hybrid algorithm to the Newton-Raphson method

Conference · Mon Jan 01 04:00:00 EST 1990 · Proceedings of the American Power Conference; (United States)

OSTI ID:6174457

Jalali, J; Tappayuthpijarn, C ^[1]

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1. Electrical Engineering Dept., Youngstown State Univ., Youngstown, OH (US)

The purpose of the hybrid method in solving power flow problems is to improve the efficiency in convergence of the existing Newton-Raphson method (NR) when its close initial estimates are not available. The method is based on interpolating between the fast convergence standard Newton-Raphson iteration and the method of steepest descent applied to the sum of the square of mismatch f{sub i}({und x}). The balance between these two methods is governed by introducing the concept of the trust region to restrict the step predicted by the classical method to be in the quadratic region and to switch to the steepest decent method to be in the quadratic region and to switch to the steepest decent method that is better when the initial starts are far from the solution. The concept of trust radius and switching policies are given in this paper.

• OSTI ID: 6174457
• Report Number(s): CONF-9004133--
• Conference Information: Journal Name: Proceedings of the American Power Conference; (United States) Journal Volume: 52
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240100* -- Power Systems-- (1990-)
29 ENERGY PLANNING, POLICY, AND ECONOMY
296000 -- Energy Planning & Policy-- Electric Power
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
CALCULATION METHODS
COMPUTER CALCULATIONS
COMPUTERS
DIGITAL COMPUTERS
LOAD MANAGEMENT
MANAGEMENT
POWER SYSTEMS