A POWER-FLOW MEASURE FOR UNSOLVABLE CASES Academic Article

abstract

• As power systems become more heavily loaded, there will be an increase in the number of situations where the power flow equations have no real solution, particularly in contingency analysis and planning applications. Since these cases can represent the most severe threats to viable system operation, it is important that a computationally efficient technique be developed to both quantify the degree of unsolvability, and to provide optimal recommendations of the parameters to change to return to a solvable solution. Such an algorithm is developed in the paper. The distance in parameter space between the desired operating point and the closest solvable operating point provides a measure of the degree of unsolvability, with the difference between these two points providing the optimal system parameter changes. The algorithm is based upon a Newton-Raphson power flow algorithm, which provides both computational efficiency and compatibility with existing security analysis techniques. The method is demonstrated on systems of up to 118 buses. 1993 IEEE

authors

• Overbye, Thomas

published proceedings

• IEEE TRANSACTIONS ON POWER SYSTEMS

author list (cited authors)

• OVERBYE, T. J.

citation count

• 149

complete list of authors

• OVERBYE, TJ

publication date

• January 1994

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE TRANSACTIONS ON POWER SYSTEMS  Journal

keywords

• Bifurcation
• Power Flow
• Power Flow Solution Existence
• Security Assessment

Digital Object Identifier (DOI)

• 10.1109/59.336130

start page

• 1359

end page

• 1365

volume

• 9

issue

• 3

URL

• http://dx.doi.org/10.1109/59.336130