Optimal Voltage Control In Power Systems: Inclusion Of Discrete Decision Variables
2018 19TH IEEE MEDITERRANEAN ELECTROTECHNICAL CONFERENCE (IEEE MELECON'18)(2018)
摘要
this paper presents an optimal voltage control algorithm developed to increase the efficiency of operation of power systems and minimizing the reaction time for compensating voltage deviations due to load fluctuations. Because of the many variables of influence in the optimal voltage control (e.g. line power flow limits, bus voltage limits, etc.), the mathematical formulation is a constrained optimization problem with continuous and discrete variables, known as Optimal Power Flow (OPF), which is non-linear and non-convex. We propose a methodology to convexify the OPF problem based on Semidefinite Programming (SDP), with a novel formulation to include discrete decision variables such as shunt elements and tap changers positions as discrete variables. Finally, the SDP formulation of the case of a DC network is included.
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关键词
Voltage control, convex relaxations, optimal power flow (OPF), semidefinite programming (SDP), linear approximation
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