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A plug-and-play series power quality compensator and compensation control method

A power quality, plug-and-play technology, applied in AC network voltage adjustment, harmonic reduction device, AC network to reduce harmonic/ripple, etc. In order to achieve the effect of convenient access to the power grid, prevent local overheating, and solve uneven air gaps

Active Publication Date: 2021-05-18
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The structure of the traditional active series compensator is complex. When connected in series to the power grid, the original structure of the power grid needs to be modified. The installation method is cumbersome and cannot be plugged and played.
[0006] (2) The traditional active series compensator uses a relatively complex control algorithm, but the control method is relatively simple, which is not conducive to adjustment according to the actual scene

Method used

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  • A plug-and-play series power quality compensator and compensation control method

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Embodiment Construction

[0046] 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. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0047] Please refer to figure 1 , the single-phase series power quality compensator provided by the present invention includes: a voltage detection module, an inverter control module and a special transformer; The feedback voltage generated after the secondary side; the special transformer includes a primary winding and a secondary winding. The output terminal of the control module is connecte...

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Abstract

The invention discloses a plug-and-play series power quality compensator and a compensation control method thereof, belonging to the field of power compensators. The compensator uses the voltage detection module to detect the real-time voltage on the load side and the feedback voltage generated by the voltage applied by the inverter on the secondary side of the special transformer; the special transformer includes a primary winding and a secondary winding, and the primary winding serves as The busbar is connected to the power grid, and the secondary side windings are closely stacked along the axial direction, and are connected to the output terminal of the inverter control module; the input terminal of the inverter control module is connected to the DC side voltage, and the control terminal of the inverter control module is connected to The output end of the voltage detection module, the inverter control module is used to output the feedback control voltage for the secondary side of the transformer according to the reference voltage signal. The invention is simple to connect and has no influence on the structure of the power grid itself, and the control method is flexible and changeable, and can be applied to the requirements of different scenarios.

Description

technical field [0001] The invention belongs to the field of power compensators, and more specifically relates to a plug-and-play connection mode of a series power quality compensator. Background technique [0002] With the advancement of science and technology, the power industry has developed rapidly. After users meet the requirements for the quantity of electric energy, the requirements for the quality of electric energy are also getting higher and higher. At the same time, on the one hand, the use of various nonlinear loads, especially the use of power electronic equipment, has brought many power quality problems and greatly deteriorated the operating environment of the power grid; on the other hand, various power quality sensitive equipment The massive popularization of power makes the impact of power quality problems on production and life more significant. In this context, research on how to eliminate the impact of power quality problems on users has become a very ur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/12H02J3/01
CPCH02J3/01H02J3/12Y02E40/40
Inventor 李达义王聪陈建春王庭康杨凯
Owner HUAZHONG UNIV OF SCI & TECH
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