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Active power real-time control device with controllable series resistor

A series resistance, real-time control technology, applied in the field of distribution network, can solve the difficult real-time control of power transmission line transmission power and other problems

Inactive Publication Date: 2017-09-22
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to control the transmission power of transmission lines in real time through mechanical AC circuit breakers

Method used

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  • Active power real-time control device with controllable series resistor
  • Active power real-time control device with controllable series resistor
  • Active power real-time control device with controllable series resistor

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Embodiment Construction

[0039] The embodiment of the present invention provides a real-time active power control device with a controllable series resistance, which is used to solve the technical problem in the prior art that the original long-distance AC transmission needs to be transformed into a DC transmission network to realize power regulation.

[0040] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, 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.

[0041] se...

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Abstract

The embodiment of the invention provides an active power real-time control device with a controllable series resistor comprises a DC control unit, wherein the DC control unit comprises a first converter, a second converter and at least one controllable series resistor, a DC side of the first converter is connected with a DC side of the second converter through the controllable series resistor connected in parallel, and an AC side of the first converter is connected with an AC side of the second converter. By setting the number of the controllable series resistors connected in parallel or by coordinative control of the first converter and the second converter, adjustment of an AC power transmission power is achieved, long-distance DC power transmission is not needed, and the technical problem that power adjustment can be achieved by changing original long-term AC power transmission in the prior art to a DC power transmission network is solved.

Description

technical field [0001] The invention relates to the field of distribution networks, in particular to a real-time active power control device with a controllable series resistance. Background technique [0002] In traditional 110kV, 220kV, 500kV and other high-voltage and ultra-high-voltage AC transmission systems, the opening and cutting of transmission lines are generally controlled by AC circuit breakers, such as figure 1 shown. The output power of the transmission line is distributed according to the natural flow, and is determined by the line impedance and load parameters. It is difficult to control the transmission power of transmission lines in real time through mechanical AC circuit breakers. [0003] In modern power systems, AC and DC hybrid transmission technology is used. The principle of direct current transmission is to convert alternating current into direct current through a rectifier device, and then convert the direct current into alternating current throu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/48
CPCH02J3/48
Inventor 吴杰康
Owner GUANGDONG UNIV OF TECH
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