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Method for judging complex out-of-step section of large-scale power grid

A large-scale power grid and cross-section technology, applied in the electric power field, can solve the problems of unsatisfactory control effect, unfavorable recovery, poor adaptability, etc., and achieve the effects of complete performance, no tuning, and simple operation and maintenance.

Active Publication Date: 2020-06-19
BEIJING SIFANG JIBAO ENG TECH +1
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Problems solved by technology

[0003] For large-scale power grids, due to the close electrical connection, flexible and changeable operation modes and unpredictable fault patterns, different instability modes of the system will be caused. Using the out-of-step oscillation identification and de-column measures in related technologies has poor adaptability and unsatisfactory control effects. , is not conducive to recovery after an accident

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  • Method for judging complex out-of-step section of large-scale power grid
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  • Method for judging complex out-of-step section of large-scale power grid

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Embodiment Construction

[0036] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0037] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0038] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific implementation manners. It will be understood by those skilled in the art that the present disclosure may be practiced without some of the specific details. In some instances, methods, means, componen...

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Abstract

The invention relates to a method for judging a complex out-of-step section of a large-scale power grid, and the method comprises the steps: obtaining the measurement information of each measurement point in a target region; performing out-of-step judgment according to the measurement information under the condition that a starting judgment condition is met, and determining an out-of-step section;under the condition that an out-of-step splitting condition is met, splitting the out-of-step section, wherein the target area comprises one or more power transmission channels, and the measuring points in the power transmission channels communicate with one another through an annular framework. The embodiment of the invention is suitable for a large complex power grid, the condition of migrationof an oscillation center in the out-of-step process is considered, setting-free can be achieved, and the operation and maintenance are simple; the dependence on a communication system is not high, the occurrence and development of systematic accidents can be effectively blocked, serious accidents of the power grid can be effectively isolated, and the security defense with more complete performance is realized.

Description

technical field [0001] The present disclosure relates to the field of electric power technology, in particular to a method for judging a complex out-of-step section of a large-scale power grid. Background technique [0002] As the line of defense to ensure the safe and stable operation of the power system, the out-of-step decoupling control can prevent accidents from expanding at critical moments, prevent system frequency and voltage collapse or other long-term stability damage accidents, and avoid large-scale power outages. [0003] For large-scale power grids, due to the close electrical connection, flexible and changeable operation modes and unpredictable fault patterns, different instability modes of the system will be caused. Using the out-of-step oscillation identification and de-column measures in related technologies has poor adaptability and unsatisfactory control effects. , is not conducive to recovery after the accident. Contents of the invention [0004] In vi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G01R31/08H02H7/26
CPCH02J3/00G01R31/086G01R31/088H02H7/26H02H1/0007
Inventor 瞿艳霞时伯年秦红霞彭世宽刘志超张岩迟忠君张玉佳马慧远邵文君孟颖张璇
Owner BEIJING SIFANG JIBAO ENG TECH
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