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A judging method for complex out-of-step cross-sections of large-scale power grids

A large-scale power grid and cross-section technology, applied in the electric power field, can solve problems such as unsatisfactory control effect, unfavorable recovery, poor adaptability, etc., and achieve the effect of complete performance, blocking systemic accidents, and free of tuning.

Active Publication Date: 2022-04-19
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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  • A judging method for complex out-of-step cross-sections of large-scale power grids
  • A judging method for complex out-of-step cross-sections of large-scale power grids
  • A judging method for complex out-of-step cross-sections of large-scale power grids

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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 present disclosure relates to a method for judging a complex out-of-step section of a large-scale power grid, wherein the method includes: acquiring measurement information of each measurement point in a target area; Step discrimination, determine the out-of-synchronization section; in the case of meeting the out-of-synchronization disassembly condition, decompose the out-of-synchronization section; wherein, the target area includes one or more power transmission channels, and each measuring point in the power transmission channel passes through The ring architecture communicates with each other. The embodiment of the present disclosure is applicable to large and complex power grids, considering the migration of the oscillation center during the out-of-synchronization process, and can realize no-tuning, simple operation and maintenance; it is not strongly dependent on the communication system, and can effectively block the occurrence of systemic accidents , development, can effectively isolate serious accidents in the power grid, and realize a more complete security defense.

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 Patents(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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