Dynamic voltage compensation device for AC/DC hybrid power distribution network and control method thereof

A technology of dynamic voltage compensation and AC/DC mixing, applied in AC network voltage adjustment, AC network to reduce harmonic/ripple, single AC network with different frequencies, etc., can solve complex switching logic, slow response speed, short interruptions etc.
CN112803425AActive Publication Date: 2021-05-14普世通(北京)电气有限公司
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
普世通(北京)电气有限公司
Publication Date
2021-05-14

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a dynamic voltage compensation device for an AC / DC hybrid power distribution network and a control method thereof. The device comprises an A-phase rectification transformation module, a B-phase rectification transformation module and a C-phase rectification transformation module which are electrically connected with one another; each of the A-phase rectification transformation module, the B-phase rectification transformation module and the C-phase rectification transformation module comprises: a high-voltage input side electrical wiring terminal, an electric reactor, a plurality of power units of which the input sides are connected in series and a plurality of isolation transformers of which the primary sides are electrically connected with the output sides of the power units respectively; the power units at the tail ends of the A-phase rectification transformation module, the B-phase rectification transformation module and the C-phase rectification transformation module are electrically connected with one another, and the isolation transformers at the tail ends are electrically connected with one another; the input side outgoing line terminals of the power units at the tail ends are short-circuited together to form a high-voltage neutral point N; and the direct current bus leading-out terminal of one power unit at the tail end is used as a low-voltage direct current output side negative wiring terminal and a low-voltage direct current output side positive wiring terminal.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of power quality control, in particular to a reconfigurable dynamic voltage compensation device and a control method thereof for an AC / DC hybrid distribution network. Background technique

[0002] Natural disasters such as lightning strikes, short circuits, large-capacity load switching, grounding, and grid failures will cause transient power quality problems such as voltage sags and short-term interruptions, which will bring huge economic losses to sensitive load users such as chip processing and scientific research parks. Its harmfulness has surpassed steady-state power quality problems such as harmonics, three-phase unbalance, and voltage deviation. At present, the voltage sag and short-term interruption control devices mainly include low-voltage dynamic voltage restorer (DVR), solid-state transfer switch (SSTS), uninterruptible power supply (UPS), etc., which generally have defects, such as complex DVR e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More