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Power grid self-organization criticality adjusting method based on power flow entropy

A technology of self-organized criticality and adjustment methods, applied to AC network circuits, AC networks with the same frequency from different sources, electrical components, etc., can solve the problems of lack of research and coping methods

Pending Publication Date: 2021-03-26
SHENZHEN POWER SUPPLY BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a lack of sufficient research and countermeasures on how to optimize the system operation mode, make the system run in equilibrium and stay away from the self-organized critical state

Method used

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  • Power grid self-organization criticality adjusting method based on power flow entropy
  • Power grid self-organization criticality adjusting method based on power flow entropy
  • Power grid self-organization criticality adjusting method based on power flow entropy

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Embodiment Construction

[0057] The following descriptions of various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be implemented.

[0058] Please refer to figure 1 As shown, the embodiment of the present invention provides a power grid self-organized criticality adjustment method based on power flow entropy, including:

[0059] Step S1, according to the probability that the load rate of the transmission line is in the set interval, construct the power flow entropy used to represent the power flow balance degree of the power system;

[0060] Step S2, taking the minimum power flow entropy in power grid operation as the optimization goal, constructing a power system power flow balance model;

[0061] Step S3, based on the particle swarm optimization algorithm, taking the output of each unit in the power system as an optimization variable, and aiming at the optimal index of the power flow balance degree of the power system, to solve...

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Abstract

The invention discloses a power grid self-organization criticality adjustment method based on power flow entropy. The method comprises the steps: S1, building the power grid operation power flow entropy for representing the power flow balance degree of a power system according to a probability that a load rate of a power transmission line is in a set interval; S2, taking the minimum power grid operation power flow entropy as an optimization target, and constructing a power system power flow balance degree model; and S3, based on a particle swarm algorithm, solving the power system power flow balance degree model by taking the output of each unit of the power system as an optimization variable and taking the optimal power system power flow balance degree index as a target to obtain an optimal solution. According to the embodiment of the invention, the system power flow can be described and optimized and adjusted, and the operation balance of the power grid is improved to a certain extent so that the system is far away from a self-organizing critical state.

Description

technical field [0001] The invention relates to the technical field of power grid control, in particular to a method for adjusting self-organizing criticality of power grids based on power flow entropy. Background technique [0002] On the one hand, the large-scale interconnection of the power grid improves the operating efficiency of the system and transmits electric energy from power plants to users thousands of miles away. On the other hand, it also increases the complexity and uncertainty of the power grid, making the system disturbance spread to a wider range . In recent years, there have been many large-scale power outages of interconnected power grids at home and abroad. The power system is an extensive dissipative system, such a system will gradually evolve to a self-organized critical state. An important feature of self-organized criticality is the power-law characteristic between the failure scale and the corresponding cumulative probability of the system. [00...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/06
CPCH02J3/00H02J3/06H02J2203/10H02J2203/20
Inventor 林子钊刘雪飞田启东
Owner SHENZHEN POWER SUPPLY BUREAU