Method and system for drop point selection and capacity configuration of flexible DC back-to-back device

A flexible direct current, capacity configuration technology, applied in the field of power transmission

Active Publication Date: 2018-09-04
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention provides a method and system applied to the selection of the landing point and capacity configuration of the flexible DC back-to-back device to solve the problem of how to select the landing point and configure the capacity of the flexible DC back-to-back device

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  • Method and system for drop point selection and capacity configuration of flexible DC back-to-back device
  • Method and system for drop point selection and capacity configuration of flexible DC back-to-back device
  • Method and system for drop point selection and capacity configuration of flexible DC back-to-back device

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Embodiment Construction

[0061] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0062] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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PUM

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Abstract

The invention discloses a method for drop point selection and capacity configuration of a flexible DC back-to-back device. The method includes: determining an initially configured line of the flexibleDC back-to-back device by calculating the power transmission capacity of a dual-dual channel cross-section after configuration of the flexible DC back-to-back device; determining the determined configuration line and capacity of the flexible DC back-to-back device by calculating the short-circuit current of busbars on both sides of the dual-dual channel section after configuration of the flexibleDC back-to-back device; and determining the configured busbar side of the flexible DC back-to-back device by calculating the voltage sensitivity of the busbars on both sides of the dual-dual channelcross-section after configuration of the flexible DC back-to-back device. By constructing a flexible DC back-to-back device at a certain side busbar of the existing dual-dual loop cross-section, cross-section tidal current distribution can be optimized, the overall power transmission capacity can be improved, and the short-circuit current of the busbars on both sides of the cross-section can be reduced, and the auxiliary voltage reactive power support capability can be provided.

Description

technical field [0001] The present invention relates to the technical field of power transmission, and more particularly, to a method and a system for placement selection and capacity configuration of a flexible DC back-to-back device. Background technique [0002] With the rapid development of the power system, the transmission power demand of the existing 500kV line section is getting higher and higher, and it is getting closer to its thermal stability limit. The grid structure on both sides of the transmission section is relatively dense, and the short-circuit current level of the busbar is relatively high. If the conventional scheme of building a new connection line is adopted, the short-circuit current of the busbars on both sides may exceed the standard. In addition, some sections, such as cross-river and cross-river sections, are difficult to construct, and it is impossible to increase the power transmission capacity of the section by adding AC transmission lines. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/36
CPCH02J3/36Y02E60/60
Inventor 唐晓骏谢岩王璟张正卫张晓东申旭辉郭长辉张鑫田春筝程鑫罗红梅张振安饶宇飞刘建勋李晶李晓珺宋少群司瑞华李程昊霍启迪吉平李媛媛李再华李立新张恺
Owner CHINA ELECTRIC POWER RES INST
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