Part of #SOME CONSIDERATIONS ON OPF AND AGC CO-ORDINATION# :
Publishing year : 1993
Conference : Eighth International Conference on Electricity
Number of pages : 12
Abstract: The control of electric power systems is structured in hierarchical levels. At the optimization level, the value of the control variables which optimises some economical criterion is computed, while all constraints are met and provided a load. At the directcontrol level, setpoints for active generating powers and for generating voltages are determined so as to track the load demand that changes rapidly. The aim of our study is to find a methodology to compare the different choices of time frames in which the control actions are executed, while emphasizing the need for close coordination between different levels of control. The paper tries to highlight the effects of the choice of the optimization of the action-solving frequency and the co-ordination between optimization and direct control levels on operational costs and the smoothness of control action.