An Intelligent Voltage Control System for Korean Power Systems

Abstract

This paper presents an intelligent reactive power and voltage control system that has been developed over three years in Korea. The general structure and more importantly the least cost search method for a feasible solution are discussed herein. As a result, the system has shown a promising performance and will therefore be tested on Jeju Island, Korea as a part of the smart grid demonstration system.

Sensitivity and functionally oriented models for power system planning, operation, and control

“…; J. As it was indicated above, the construction of sensitivities in [2][3][4][5][6][7][8][9][10][11][12][13][14] is based on the use of system Jacobian matrices and encounters limitations. At the same time, the application of experimental design [16][17][18] provides a means for building adequate sensitivity models.…”

“…As an example, it is possible to indicate the problem of voltage and reactive power control in power systems. The techniques for its solution related to applying optimization as well as knowledge based approaches (for instance, [2][3][4][5][6][7][8][9][10][11][12][13][14]) utilize diverse algorithmic modifications of the method [15] allowing the use of the system Jacobian matrices to build sensitivities (by the way, the solution of other power engineering problems with the use of sensitivity models is also based on applying techniques associated with utilizing Jacobian matrices [2]). However, deficient linearization accuracy permits one to use these techniques when perturbations are small (for example, discussion to [3]).…”