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Distributed electric energy quality treatment method applied to low-voltage boosting

A power quality, low-voltage technology, applied in the direction of AC network voltage adjustment, electrical components, circuit devices, etc., can solve problems such as large workload and complexity, and achieve the effect of ensuring the sustainability of electricity consumption

Inactive Publication Date: 2021-02-09
QINGDAO TOPSCOMM COMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the low-voltage problem caused by reactive power and three-phase imbalance is used, if the voltage control method in series is used, it needs to be powered off and connected, and there may be multiple control points in one station area, and the workload and complexity are very high. Big

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  • Distributed electric energy quality treatment method applied to low-voltage boosting
  • Distributed electric energy quality treatment method applied to low-voltage boosting
  • Distributed electric energy quality treatment method applied to low-voltage boosting

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Embodiment Construction

[0021] The core of the present invention is to provide a distributed power quality control method applied to low voltage rise. The method can use parallel power quality control equipment to control reactive power and unbalanced current in the line through self-adaptive compensation. Thereby effectively lifting the low voltage in the line.

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] figure 1 It is the topological diagram of the three-phase unbalanced working condition of the distributed power quality control method applied to the low-voltage lift of the present invention. The low-voltage distribution stati...

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Abstract

The invention discloses a distributed power quality control method applied to low-voltage boosting, and the method comprises the following steps: carrying out line analysis and power utilization analysis in a transformer area with a low-voltage problem, judging main factors generated by the low-voltage problem, and judging the working condition of the voltage problem caused by reactive current orthree-phase unbalanced current; installing a parallel distributed power quality treatment device without power failure, detecting the voltage and current components in a power grid, and treating the reactive and unbalanced current in a line in a targeted manner in a mode adaptive judgment mode, so that low voltage in the line is effectively increased.

Description

technical field [0001] The invention relates to the field of power quality control, in particular to a distributed power quality control method applied to low voltage rise. Background technique [0002] The unbalanced three-phase phenomenon will inevitably occur in the rural power grid area. The excessive current of a certain phase will cause a large voltage drop in this phase, and the neutral line also has a certain potential, so the voltage of this phase will be very low, while the other two The phase voltage is relatively normal or even higher than the transformer outlet voltage. At the same time, in some rural households, equipment with obvious inductive loads such as motors may be used, and the large reactive current will increase the voltage division effect of the line. [0003] When the user voltage is low, the series low voltage control device is often used, which is connected in series to the line, and the user voltage is increased by superimposing voltage. Howeve...

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Application Information

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IPC IPC(8): H02J3/12H02J3/16H02J3/18H02J3/26
CPCH02J3/12H02J3/16H02J3/1821H02J3/26Y02E40/30Y02E40/50
Inventor 范建华于瑞卢松林张鹏程马玉坤刘华美刘培臣宁振
Owner QINGDAO TOPSCOMM COMM
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