Voltage optimizing point sorting method for 10KV overhead line reactive compensation device

Abstract

The invention discloses a voltage optimizing point sorting method for a 10KV overhead line reactive compensation device. The method comprises the following steps: a. obtaining the load rate and the power factor in maximum load according to data of line load curves and reactive and active sampling; b. initially determining the compensation capacity range; c. calculating and drawing a line load and impedance distribution diagram according to the load rate, the power factor and a circuit electric wiring diagram as well as the span and the diameter of an overhead line, and counting the reaction value of a main circuit or branches; d. calculating the voltage drop percentage of each load point relative to an original point or a branch point; e. determining compensation point quantity and capacity according to the conditions of line voltage drop and line reactive capacity in an allowable compensation range, and verifying; and f. determining the position of the compensation point. By adopting the method, the quantity and position of the compensation points can be analyzed and calculated according to actual conditions, the compensation efficiency to the lines can be improved maximally, and meanwhile, the conditions of overcompensation and under-compensation can be avoided.

Description

technical field [0001] The invention belongs to the technical field of power supply, and in particular relates to a voltage optimization point selection method for a 10KV overhead line reactive power compensation device. Background technique [0002] The inductive load is the main power grid line, and the inductive load contains inductance. The inductance will be periodically charged and discharged between the line and the substation. , the inductance does not consume electric energy in the grid line, so its power in the line is also called reactive power. The conclusion that reactive power does not consume electric energy is the ideal condition of the line without resistance, but in fact the line has resistance. , the charging and discharging current generated by the inductor in the line will increase the heating of the line. On the one hand, it will consume electric energy. Therefore, it is necessary to eliminate or reduce the flow of this charging and discharging current...

AI Technical Summary

Problems solved by technology

At present, the selection point of the installation compensation device is relatively random, either the compensation device is installed at the end of the line, or the compensation point is randomly selected in the middle of the line. Although this method can compensate the line to a certain extent, However, the effect achieved by this method is not ideal

Moreover, due to the lack of specific analysis of the line conditions, there may be overcompensation or undercompensation, causing unnecessary damage to the line and load

Images