This chapter deals two methodologies for optimal voltage control. The first methodology related to determining the optimal transformer tap settings in radial (rural) distribution networks is based on the space and time decomposition of the voltage-control problem. Thereafter, the Volt/Var control is formulated as a nonlinear complex optimization problem with constraints and solved by using metaheuristic optimization methods.

Chapter Contents:

• 10.1 Introduction
• 10.2 Decomposition of the voltage-control problem
• 10.2.1 Seasonal control of voltage
• 10.2.1.1 The first stage of the optimal seasonal control of voltage
• 10.2.1.2 The second stage of the optimal seasonal control of voltage
• 10.2.1.3 Optimal voltage control with ULTCTs
• 10.2.1.4 Simulation results
• 10.3 Optimal Volt/Var control using metaheuristic optimization
• 10.3.1 Problem formulation
• 10.3.2 Solution method
• 10.3.2.1 Implementation for optimal Volt/Var control
• 10.3.3 Simulation results
• 10.4 Conclusion
• References

Inspec keywords: voltage control; power transformers; optimal control; nonlinear programming; power distribution control

Other keywords: metaheuristic optimization methods; optimal transformer tap settings; space decomposition; optimal Volt-Var control; nonlinear complex optimization problem; radial distribution networks; voltage-control problem; time decomposition

Subjects: Transformers and reactors; Voltage control; Optimal control; Power system control; Optimisation techniques; Control of electric power systems; Optimisation techniques; Distribution networks