A comparison of the optimal multiplier in polar and rectangular coordinates Academic Article

abstract

• Studies of the optimal multiplier (or optimal step size) modification to the standard Newton-Raphson (NR) load flow have mainly focused on highly stressed and unsolvable systems. This paper extends these previous studies by comparing performance of the NR load flow with and without optimal multipliers for a variety of unstressed, stressed, and unsolvable systems. Also, the impact of coordinate system choice in representing the voltage phasor at each bus is considered. In total, four solution methods are compared: the NR algorithm with and without optimal multipliers using polar and rectangular coordinates. This comparison is carried out by combining analysis of the optimal multiplier technique with empirical results for two-bus, 118-bus, and 10 274-bus test cases. These results indicate that the polar NR load flow with optimal multipliers is the best method of solution for both solvable and unsolvable cases. 2005 IEEE.

authors

• Overbye, Thomas

published proceedings

• IEEE TRANSACTIONS ON POWER SYSTEMS

author list (cited authors)

• Tate, J. E., & Overbye, T. J.

citation count

• 78

complete list of authors

• Tate, JE||Overbye, TJ

publication date

• November 2005

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE TRANSACTIONS ON POWER SYSTEMS  Journal

keywords

• Load Flow Analysis
• Load Flow Convergence
• Optimal Multipliers
• Polar And Rectangular Coordinates
• Step-size Optimization

Digital Object Identifier (DOI)

• 10.1109/TPWRS.2005.857388

start page

• 1667

end page

• 1674

volume

• 20

issue

• 4

URL

• http://dx.doi.org/10.1109/tpwrs.2005.857388