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Voltage regulating device of transformer, control method of voltage regulating device and control system based on voltage regulating device

A voltage regulating device and control system technology, which is applied in the direction of transformers, variable transformers, and output power conversion devices, etc., can solve the problems of continuous fluctuations in the input voltage of transformers, and achieve continuous fluctuations in output voltage, fast switching speed, and improved reliability. sexual effect

Pending Publication Date: 2019-04-05
CHINA ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can realize the fast switching of the voltage regulating winding of the transformer and carry out continuous load adjustment, so as to solve the problems caused by the continuous fluctuation of the input voltage of the transformer

Method used

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  • Voltage regulating device of transformer, control method of voltage regulating device and control system based on voltage regulating device
  • Voltage regulating device of transformer, control method of voltage regulating device and control system based on voltage regulating device
  • Voltage regulating device of transformer, control method of voltage regulating device and control system based on voltage regulating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Such as figure 1 The voltage regulating device shown includes: low-voltage winding, high-voltage winding, adjustable winding assembly, IGBT switching mechanism and controller;

[0062] The low-voltage winding is coupled to the high-voltage winding;

[0063] One end of the adjustable winding assembly is connected to the high-voltage winding, and the other end of the adjustable winding assembly is connected to the IGBT switching mechanism;

[0064] The controller is connected with the adjustable winding assembly and the IGBT switching mechanism, and the controller is used for controlling input and withdrawal of the adjustable winding assembly, and switching off of the IGBT switching mechanism.

[0065] Wherein, the adjustable winding assembly includes: a voltage regulating winding, a first voltage regulating switch group and a second voltage regulating switch group, wherein the first voltage regulating switch group and the second voltage regulating switch group respectiv...

Embodiment 2

[0083] (1) if figure 1 As shown, the distribution transformer includes a high-voltage winding, a low-voltage winding, a measuring winding, an adjustable winding assembly composed of 8 voltage regulating windings and 9 voltage regulating switches, an IGBT switching mechanism, and a controller.

[0084] Among them, the IGBT switching mechanism includes two arc suppression components, and each arc suppression component includes a high-voltage IGBT and a magnetic latching relay.

[0085] Each voltage regulating switch is connected with the number of wire turns of the voltage regulating winding.

[0086] (2) This embodiment takes the voltage regulating winding 1 as an example to illustrate the connection method of the voltage regulating winding. The voltage regulating winding 1 is connected with K6 and K2 in the voltage regulating switch. When K2 is closed and K6 is disconnected, the voltage regulating Winding 1 is connected; when K6 is closed and K2 is disconnected, the voltage r...

Embodiment 3

[0120] Based on the same inventive concept, the present invention also provides a control method based on the pressure regulating device, such as Figure 4 As shown, the control method of the pressure regulating device includes:

[0121] Step S1, the controller calculates the voltage regulation requirement of the adjustable winding assembly based on the difference between the measured voltage value of the low-voltage winding and the rated voltage, and generates a voltage regulation logic;

[0122] Step S2, based on the voltage regulation logic, the controller outputs corresponding control signals in time sequence to control the switching on and off of the IGBT switching mechanism, and the switching of the adjustable winding assembly into and out of the high voltage winding.

[0123] Step S2, based on the voltage regulation logic, the controller outputs a corresponding control signal in time sequence, controls the opening and closing of the IGBT switching mechanism, and puts th...

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Abstract

The invention provides a voltage regulating device of a transformer, a control method of the voltage regulating device and a control system based on the voltage regulating device. The voltage regulating device includes: a low-voltage winding, a high-voltage winding, an adjustable winding component, an insulated gate bipolar transistor (IGBT) switching mechanism and a controller; the low-voltage winding and the high-voltage winding are coupled; one end of the adjustable winding component is connected with the high-voltage winding, and the other end of the adjustable winding component is connected with the IGBT switching mechanism; the controller is connected with the adjustable winding component and the IGBT switching mechanism, and the controller is used for controlling the input and withdrawal of the adjustable winding component and the connection and disconnection of the IGBT switching mechanism. The invention realizes fast switching of a voltage regulating winding in the adjustablewinding component by means of the adjustable winding component and the IGBT switching mechanism. The switching speed is faster than that of a static switch, non-inrush current voltage regulation is realized, the generation of an arc in a switching process of a conventional switch is eliminated, and the speed and efficiency of voltage regulation are improved.

Description

technical field [0001] The invention relates to the technical field of voltage regulation of distribution transformers, in particular to a transformer voltage regulation device, control method and system. Background technique [0002] In the power system, when the grid voltage or load changes, the output voltage of the transformer will change. When the change exceeds the allowable range, it will affect the production and life of power users. In order to ensure that the output voltage of the transformer is within the allowable range, the automatic voltage regulation technology is used, that is, when the output voltage exceeds the allowable value, the number of turns of the primary and secondary windings of the distribution transformer is adjusted by selecting different winding taps, thereby changing the distribution voltage. The transformation ratio of the electric transformer ensures that the voltage at the load end is maintained within a reasonable range. [0003] At prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P13/06H01F29/04
CPCH02P13/06H01F29/04
Inventor 宋祺鹏盛万兴武世博戚振彪秦开明杨春波凌松傅光辉张海龙张永斌李丽鹏
Owner CHINA ELECTRIC POWER RES INST
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