Realization method for function of adaptive load type distribution transformer

Abstract

The invention provides a realization method for functions of an adaptive load type distribution transformer. The realization method comprises the following steps of setting adaptive load type distribution transformer motion constant values which include a three-phase load unbalance adjusting constant value, a phase-splitting reactive compensation constant value, a load capacitance-modulating current constant value and a load voltage-modulating voltage constant value, and according to the set adaptive load type distribution transformer motion constant values, performing three-phase load balance control, phase-splitting reactive compensation control, rated capacity operation model adjusting control and voltage tap shift adjusting control. The realization method fulfills an aim of adaptive loads by scientifically setting the load capacitance-modulating motion constant value and combining the three-phase load unbalance adjustment and phase-splitting reactive compensation strategy, helps to effectively reduce operation loss of the distribution transformer and low-voltage network wire loss, improve the economic operation level of the power distribution area and guarantee power supply quality to users.

Description

technical field [0001] The invention belongs to the technical field of power distribution equipment energy saving, and in particular relates to a method for realizing the function of an adaptive load type distribution transformer. Background technique [0002] The capacity-regulating distribution transformer used in the power system is specially designed and produced to deal with the problems of long running time of rural distribution transformers at light loads throughout the year, large peak-to-valley difference, and high operating costs. Generally, it has two kinds of rated capacity, the size and rated capacity ratio is close to 3:1. The development of capacity-regulating distribution transformers has experienced no-load capacity-regulating and no-load voltage-regulating distribution transformers—on-load capacity-regulating and off-load voltage-regulating distribution transformers—automatic capacity-adjusting and automatic voltage-regulating distribution transformers—self...

AI Technical Summary

Problems solved by technology

On-load capacity-regulating and off-load voltage-regulating distribution transformers, automatic capacity-adjusting and automatic voltage-regulating distribution transformers, and self-adaptive load distribution transformers are more suitable for rural areas with low annual average load rates and concentrated peak load periods. However, rural residents mainly use single-phase electricity, and unbalanced three-phase loads are more common. Using the three-phase average or single-phase value as the judgment value will easily lead to misjudgment, and the accuracy is not high; the value of the capacity adjustment action should be based on The economic operating point of the large and small capacity operation mode is the basis for judgment, and should not be set arbitrarily

Images