Voltage regulating transformer and voltage regulating method thereof

Abstract

The invention discloses a voltage regulating transformer and a voltage regulating method thereof. The voltage regulating transformer comprises a transformer main body, a voltage regulating device and a control device, wherein the control device is used for acquiring the voltage on a line, and controlling the voltage regulating device to regulate the output voltage of the transformer main body when the voltage value at the tail end of the line is less than the voltage lower limit in the preset voltage regulating range, so that the output voltage of the transformer main body is increased, and the voltage value at the tail end of the line is increased to be qualified; when the voltage value at the head end of the line is less than the voltage upper limit in the preset voltage regulation range, the voltage regulating device is continuously controlled to regulate the output voltage of the transformer main body, so that the voltage values at the head end and the tail end of the line are increased; and when the voltage value at the head end of the line is equal to the voltage upper limit in the preset voltage regulation range, the voltage regulating device is controlled to stop regulating the output voltage of the transformer main body. According to the technical scheme, the phenomenon that the voltage at the tail end of the line in the distribution transformer area is too low is improved, and automatic voltage regulation is achieved.

Description

technical field [0001] The invention relates to a voltage regulation technology of a transformer, in particular to a voltage regulation transformer and a voltage regulation method thereof. Background technique [0002] At present, the phenomenon that the voltage at the end of the line is too low is common in the distribution transformer area. Most of the reasons for the low voltage phenomenon are: small wire diameter, circuitous power supply, long power supply radius and unreasonable line layout, which lead to the end of the transformer low-voltage line. If the voltage is too low, the user's electrical equipment cannot be used normally, causing user complaints. [0003] In the prior art, the voltage regulation range of the transformer is generally only set according to the allowable value of power supply voltage deviation specified in the national standard, that is, the fixed upper and lower voltage regulation limits are set according to the national standard. If the voltag...

AI Technical Summary

Problems solved by technology

If the voltage at the head end of the line or any part of the line exceeds the upper limit of voltage regulation, it is considered that the voltage is too high and unqualified, and the voltage needs to be lowered; because the above-mentioned reasons for low voltage are common, even if the voltage at the head end of the line reaches the upper limit of voltage regulation, The voltage at the end of the line is often lower than the lower limit of voltage regulation; if the voltage at the head end of the line continues to be reduced, a new low voltage will appear at the end of the line, and the voltage is lower than the original low voltage; therefore, the voltage at the head end of the line is qualified The upper limit of the upper limit is the upper limit of the voltage regulation specified by the national standard, and it is difficult to meet the voltage requirements at the end of the line in practical applications

Moreover, the existing technology only simply increases the secondary voltage of the distribution transformer for the above-mentioned low voltage phenomenon, and cannot grasp the voltage and voltage regulation effect at the end of the line in time, and cannot effectively solve the low voltage phenomenon in the distribution transformer area

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