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

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...

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

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