Energy-saving control method for on-load capacitance-adjusting transformer

Abstract

The invention relates to an energy-saving control method for an on-load capacitance-adjusting transformer. The energy-saving control method for the on-load capacitance-adjusting transformer comprises the following steps of: (1) acquiring data of a voltage transformer and a current transformer by using a capacitance-adjusting switch control system and calculating a load factor L and a power factor Q of the on-load capacitance-adjusting transformer; (2) calculating the optimum load factor Lmax when a capacitance-adjusting switch is positioned at a large-capacitance gear and the optimum load factor Lmin when the capacitance-adjusting switch is positioned at a small-capacitance gear by a gear-shifting preset value optimization algorithm; (3) calculating delayed gear-shifting preset time t, an elastic coefficient k and an error coefficient b by a delayed gear-shift preset time algorithm; and (4) further adjusting the delayed gear-shifting preset time t, the elastic coefficient k and the error coefficient b of the maximum energy-saving effect of the on-load capacitance-adjusting transformer by an energy-saving strategy selection algorithm so as to realize the dynamic set of a capacitance-adjusting switch action strategy. The energy-saving control method for the on-load capacitance-adjusting transformer has the characteristics of accurate judgment, obvious energy-saving effect, high system reliability and the like and is particularly suitable for distribution network occasions with complicated load conditions.

Description

technical field [0001] The invention belongs to the field of on-load capacity-regulating transformers, in particular to an energy-saving control method for on-load capacity-regulating transformers. Background technique [0002] Distribution transformers are widely used in power systems, which account for an important proportion of power system losses. Reducing transformation losses is of great significance to power production. On-load capacity regulating transformer, as a kind of transformer equipment to reduce power distribution loss in power system, has been gradually applied in recent years. The on-load capacity regulating transformer automatically adjusts the operating capacity through the capacity regulating switch to achieve the purpose of reducing no-load loss according to the load. It is suitable for rural power grids with large seasonal load changes and urban commercial areas, development areas, Distribution area such as industrial area. [0003] The on-load capac...

AI Technical Summary

Problems solved by technology

However, the preset value and preset time for gear adjustment are pre-set. In actual application, it is difficult to accurately perform on-load capacity adjustment according to the changing distribution load, and cannot fully utilize the on-load capacity adjustment. Energy-saving effect of capacitor transformer

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