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Space-based early warning method for critical phase transformation of electric power system

A power system and space technology, applied in the field of space early warning of critical phase transitions in power systems, can solve problems such as scale increase and power outages

Active Publication Date: 2016-10-19
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During this process, faults continue to spread and grow in scale, which may eventually lead to large-scale power outages

Method used

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  • Space-based early warning method for critical phase transformation of electric power system
  • Space-based early warning method for critical phase transformation of electric power system
  • Space-based early warning method for critical phase transformation of electric power system

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Embodiment Construction

[0033] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0034] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do without departing from the connotation of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

[0035] The present inv...

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Abstract

The invention discloses a space-based early warning method for critical phase transformation of an electric power system, and relates to the field of electric power systems. According to the method, the unbalance degree of power flow distribution and the distribution pattern of transmission capacity are captured through spatial autocorrelation and variance indexes for early warning the condition that the electric power system gets into a critical state; it shows that the spatial distribution pattern of the system line load rate is difficult to measure, but the spatial autocorrelation and variance of the line load rate are easy to measure, and therefore the spatial autocorrelation and variance of the system line load rate have the good early warning characteristics and can serve as an early warning signal for the condition that the system approaches critical phase transformation.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a space early warning method for critical phase transitions in power systems. Background technique [0002] Studies have shown that there is a critical transition phenomenon in the ecosystem. The critical phase transition phenomenon refers to the fact that when a multi-stable ecosystem is close to the mutation threshold point, even a small change in the external conditions will trigger a violent response of the ecosystem, making it enter another state with completely different structures and functions. a steady state. The research on early warning signals of ecosystem critical phase transitions has achieved a lot of results. Van Nes, Carpenter et al. found through mathematical derivation and a large number of experiments that before the critical phase transition, the ecosystem showed frequent fluctuations (flickering) and critical slowing down (critical slowing down). The phenomen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06Q50/06
Inventor 任惠
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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