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Flexible on-load voltage regulator of integrated flexible AC power transmission device

A flexible AC transmission and AC transmission technology, applied in the direction of AC network voltage adjustment, reactive power compensation, etc., can solve the problems of stepless voltage regulation, slow response speed, reactive power imbalance, etc., to reduce current stress and heat loss, The effect of increasing switching frequency and simplifying design

Active Publication Date: 2016-06-15
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to overcome the shortcomings of traditional on-load voltage regulation stepless voltage regulation, slow response speed, unbalanced reactive power, etc., and propose a new on-load voltage regulator

Method used

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  • Flexible on-load voltage regulator of integrated flexible AC power transmission device
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  • Flexible on-load voltage regulator of integrated flexible AC power transmission device

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, the flexible voltage regulator of the present invention includes a main transformer 10 , a voltage regulating transformer 20 , a flexible AC transmission power electronic device 30 and a controller 40 . The main transformer 10 is provided with a tap on the high-voltage side connected to the power grid, and the main transformer 10 is connected to the voltage regulating transformer 20 through the tap, and the voltage regulating transformer 20 can share part of the windings of the main transformer 10 . The voltage regulating transformer 20 is connected with the FACT power electronic device 30 , and the FACT power electronic device 30 is connected with the controller 40 .

[0024] The high voltage side of the main transformer 10 is connected to the power grid in a Δ-type connection, and the power grid and the main...

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Abstract

A flexible on-load voltage regulator of an integrated flexible AC power transmission device comprises a main voltage regulator (10), a voltage regulation transformer (20), a flexible AC power transmission electronic device (30) and a controller (40), wherein a tap is arranged on a high-voltage side, connected with a power grid, of the main voltage regulator (10), the main voltage regulator (10) is connected with the voltage regulation transformer (20) through the tap, the voltage regulation transformer (20) shares a part of winding of the main voltage regulator (10), the voltage regulation transformer (20) is connected with the flexible AC power transmission electronic device (30), the flexible AC power transmission electronic device (30) is connected with the controller (40), the controller (40) is used for simultaneously sampling the voltage of the power grid and a filter current output from the flexible AC power transmission electronic device for feedback control according to a given voltage regulation instruction, the obtained driving pulse instruction is generated to a required compensation voltage, the required compensation voltage is sent to the main voltage regulator (10) through the voltage regulation transformer (20), the voltage of the high-voltage side of the main transformer (10) is changed, and stepless and rapid regulation on the voltage of a load side is further achieved.

Description

technical field [0001] The invention relates to a flexible on-load voltage regulator. Background technique [0002] The on-load tap changer plays an important role in the power system. It can not only stabilize the load center voltage, but also is an indispensable important equipment for connecting the power grid, adjusting the load flow, and improving the quality of power supply. The traditional on-load voltage regulating device adopts mechanical on-load tap-changer for voltage regulation or uses thyristor instead of mechanical on-load tap-changer for voltage regulation. The device is simple to manufacture and low in cost, and is currently widely used in power systems at home and abroad. With the massive access of new energy sources and the rapid growth of dynamic power loads, traditional on-load voltage regulation devices are increasingly exposed to the following weak links: ①The voltage can only be adjusted according to a certain discrete step length, and stepless regula...

Claims

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Application Information

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IPC IPC(8): H02J3/16
CPCH02J3/16Y02E40/30
Inventor 尹靖元韦统振
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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