Engineering practical solution to reactive power optimization considering coupling among period

Abstract

The invention provides an engineering practical solution to reactive power optimization considering coupling among a period, and belongs to the field of electric power system dispatching and optimizing operation. The method comprises the following specific steps: firstly reading system operation basic information and technical parameters required by reactive power optimization considering coupling among the period and unit operation basic information and technical parameters; then, constructing a nonlinear programming model taking system operation power loss minimization as a goal, and calculating a continuous solution to control variable of reactive power regulation equipment; constructing a mixed integer programming model taking system power loss increment minimization as the goal, and calculating a discrete solution to control variable of the reactive power regulation equipment; then, substituting the obtained discrete solution into the nonlinear programming model constructed before, and calculating reactive power output level for regulating a generator set again; and obtaining the engineering practical solution to reactive power optimization considering coupling among the period on the basis of meeting security constraint conditions of electric power system operation. The solution is low in development difficulty and high in efficiency, and has extremely high practicability.

Description

technical field [0001] The invention relates to the field of power system scheduling and optimal operation, and in particular provides a practical engineering solution method for reactive power optimization considering inter-period coupling. Background technique [0002] At present, the degree of AC-DC hybrid connection of my country's power grid is continuously deepening, and the problem of system voltage control is becoming increasingly prominent. In order to further improve the management level of power grid operation and the optimization effect of dispatching operation, it is necessary to deeply study the problem of reactive power optimization considering the coupling between time periods in power system operation. In the power system, reactive power optimization considering inter-period coupling refers to adjusting the reactive power, The reactive power control means such as the number of groups of switching capacitors and the tap of the on-load tap changer can optimiz...

AI Technical Summary

Problems solved by technology

However, the regular processing method based on the principle of "rounding up" is difficult to guarantee the optimality of the solution, and the optimization result may not even be feasible; while the computational efficiency of the heuristic algorithm is low, and the randomness of the optimization result limits its large-scale application. Applications in real power systems

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