Method and device for regulating capacitance of on-load capacitance regulating transformer

Abstract

The invention relates to the field of capacitance regulation control, and in particular relates to a method and a device for regulating the capacitance of an on-load capacitance regulating transformer. The method disclosed by the embodiment of the invention comprises the steps of determining a switching critical value; selecting a first critical load value as the switching critical value when the average load capacity of the on-load capacitance regulating transformer is less than a preset load capacity, and selecting a second critical load value as the critical value when the average load capacity of the on-load capacitance regulating transformer is larger than the preset load capacity; comparing the load capacity of the on-load capacitance regulating transformer with the switching critical value; and switching between large capacity and small capacity operation modes of the on-load capacitance regulating transformer according to the comparison result of the load capacity and the switching critical value. According to the embodiment of the invention, two switching critical values can be alternated, and the on-load capacitance regulating transformer can select a more reasonable switching critical value to carry out the switching of the capacity at different power utilization regions and different power utilization periods, so that the switching is more accurate, and the electric energy is saved effectively.

Description

technical field [0001] The invention relates to the field of capacity adjustment control, in particular to a capacity adjustment method and device for an on-load capacity adjustment transformer. Background technique [0002] The on-load capacity-adjusting transformer is a transformer with two types of rated capacity. According to the size of the load carried by the user, it can automatically perform capacity adjustment control between its two rated capacity operation modes, and realize the control of the capacity of the transformer during operation. adjustment. [0003] The existing capacity regulation control method of on-load capacity regulation transformer is to carry out capacity regulation control according to the single-point critical capacity value to switch between large and small capacities. However, due to frequent fluctuations in power load, this single The value switching method cannot make the on-load capacity regulating transformer in a better operation mode, ...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a capacity regulating method and device of an on-load capacity-regulating transformer, which is used to solve the problem that the single-value switching method in the prior art cannot make the on-load capacity-regulating transformer in a better operating mode. Technical problems with high hardware loss

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