1. The Distribution of the Number of Real Solutions to the Power Flow Equations
- Author
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Julia Lindberg, Alisha Zachariah, Nigel Boston, and Bernard Lesieutre
- Subjects
Mathematics - Algebraic Geometry ,FOS: Mathematics ,FOS: Electrical engineering, electronic engineering, information engineering ,Energy Engineering and Power Technology ,Systems and Control (eess.SY) ,Electrical and Electronic Engineering ,Electrical Engineering and Systems Science - Systems and Control ,Algebraic Geometry (math.AG) - Abstract
In this paper we study the distributions of the number of real solutions to the power flow equations over varying electrical parameters. We introduce a new monodromy and parameter homotopy continuation method for quickly finding all solutions to the power flow equations. We apply this method to find distributions of the number of real solutions to the power flow equations and compare these distributions to those of random polynomials. It is observed that while the power flow equations tend to admit many fewer real-valued solutions than a bound on the total number of complex solutions, for low levels of load they tend to admit many more than a corresponding random polynomial. We show that for cycle graphs the number of real solutions can achieve the maximum bound for specific parameter values and for complete graphs with four or more vertices there are susceptance values that give infinitely many real solutions., Comment: 13 pages
- Published
- 2023