Low voltage current limiting controller-based multiple feed-in current converting bus survivability analysis method

A technology of commutation bus and analysis method, applied in the direction of electrical components, etc., to achieve reliable commutation, realize low-voltage transmission power, and improve effectiveness

Inactive Publication Date: 2017-02-01
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

The voltage stability problem of the

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  • Low voltage current limiting controller-based multiple feed-in current converting bus survivability analysis method
  • Low voltage current limiting controller-based multiple feed-in current converting bus survivability analysis method
  • Low voltage current limiting controller-based multiple feed-in current converting bus survivability analysis method

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Embodiment Construction

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0047] The embodiment of the present invention provides a method for analyzing the survivability of a multi-infeed commutation bus based on a low-voltage current limiting controller, such as figure 1 shown, including:

[0048] S1. Obtain the rated transmission power of the DC system, the rated voltage and critical impedance value of any converter...

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Abstract

The invention relates to a low voltage current limiting controller-based multiple feed-in current converting bus survivability analysis method comprising the following steps: rated transmission power of a direct current system and rated voltage and critical impedance value of any one current converting bus to be analyzed are obtained; according to the rated transmission power, the rated voltage and the critical impedance value, a preset current converting node state survivability index formula is used for calculating state survivability index value of the current converting bus to be analyzed. Via the multiple feed-in current converting bus survivability analysis method disclosed in an embodiment of the invention, state survivability of a multiple feed-in direct current converting bus can be effectively detected, and operation capability of power grid current converting nodes can be improved in low voltage conditions.

Description

technical field [0001] The invention relates to the technical field of AC and DC power grid planning, in particular to a method for analyzing the survivability of multi-infeed DC commutation buses based on a low-voltage current limiting controller. Background technique [0002] High Voltage Direct Current (HVDC) has very important practical significance for improving the transmission capacity of the existing power system and tapping the potential of existing equipment. It is a power transmission method vigorously developed by the country. [0003] The converter of the HVDC system needs to consume a large amount of reactive power during operation, which puts pressure on the voltage support capacity of the grid. The voltage stability problem of the receiving end system is very prominent. Based on this, it is very important to study the State Survivability Index (SSI) of the multi-infeed DC converter bus, and to evaluate the operating capability of the grid converter nodes und...

Claims

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Application Information

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IPC IPC(8): H02J5/00
CPCH02J5/00
Inventor 郭紫昱李甜甜林涛田春筝杨明臻毛玉宾毕如玉刘永民陈宝平黄景慧洪雯苗福丰
Owner STATE GRID CORP OF CHINA
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