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Non-contact automatic voltage regulation device

An automatic voltage regulation and non-contact technology, applied in the direction of AC network voltage adjustment, etc., can solve the problems of difficult voltage quality, scattered agricultural power users, and low power load density, and achieve compact structure and small voltage fluctuation , good cooling effect

Inactive Publication Date: 2018-02-23
武汉天富海科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, the power supply characteristics of users in remote areas are: agricultural power users are scattered, power transmission distance is long, power load density is small, and it is greatly affected by seasons and climates, and the voltage quality is difficult to meet standards

Method used

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] The invention provides a non-contact automatic voltage regulating device, which is suitable for automatic follow-up and compensation when the transmission line is too long and low voltage occurs in the middle or end of the line, so that the voltage deviation of the 220V single-phase power supply is The specified requirements of +7%~-10% of the nominal voltage 220V. Because the device of the invention adopts phase-separated voltage regulation design and independent control, each phase can output a qualified voltage, so it is very easy to form a three-phase voltage regulation device.

[0026]...

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Abstract

The invention discloses a non-contact automatic voltage regulation device, which comprises an input interface, a power module unit, a transformer unit, a controller unit and an output interface, wherein the power module unit is sequentially turned on or off according to trigger pulses output by a controller unit; the controller units outputs the trigger pulses used for controlling thyristors in the power module unit, adjusts a compensation gear and a compensation direction of the transformer unit, monitors and obtains an output current value flowing through a transformer secondary part in realtime, combines the obtained input end voltage value with the obtained output end voltage value, realizes overvoltage protection, undervoltage protection and overcurrent protection, and achieves voltage-stabilizing control over the output voltage according to a compensation voltage obtained by the transformer unit; and the output interface is used for providing an output stable AC power supply toa user. By connecting the non-contact automatic voltage regulation device in series in a middle section or a tail end of a feeding line, the line voltage is adjusted in a certain range, so that the output voltage is 220 + / -7 V, meanwhile the line loss of the line can be reduced.

Description

technical field [0001] The invention belongs to the technical field of power electronic conversion and control, and more specifically relates to a non-contact automatic voltage regulating device. Background technique [0002] Voltage is one of the main quality indicators of electric energy. Voltage quality has a direct impact on the stability of the power grid and the safe operation of power equipment, line loss, safe production in industry and agriculture, and people's daily electricity consumption. In fact, there are always some transmission lines that are too long, and even when the line reactive power compensation is normal and the power factor is normal, there will still be low voltage at the end. Therefore, it is necessary to use a voltage regulator at the middle or end of the line. [0003] GB12325-2008 "Power Quality Supply Voltage Allowable Deviation" stipulates that the 220V single-phase power supply voltage deviation is +7% to -10% of the nominal voltage of 220V....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/12
CPCH02J3/12
Inventor 屈碧环
Owner 武汉天富海科技发展有限公司
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