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High-resolution power grid elasticity evaluation method

A high-resolution, power grid technology, applied in the direction of instruments, data processing applications, forecasting, etc.

Pending Publication Date: 2021-04-06
STATE GRID ZHEJIANG ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For the newly proposed power system resilience, there are few methods to evaluate it at present, and there is an urgent need for a method to evaluate it with high resolution

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  • High-resolution power grid elasticity evaluation method
  • High-resolution power grid elasticity evaluation method
  • High-resolution power grid elasticity evaluation method

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Embodiment Construction

[0119] The present invention proposes a high-resolution grid resilience evaluation method, which will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0120] Such as figure 1 As shown, a high-resolution power grid resilience evaluation method described in the present invention, the specific implementation steps are as follows:

[0121] (1) The index decomposition system takes power grid flexibility as the overall goal, takes robustness, adequacy, and security as the basic criteria, and takes power supply, power grid, and users as evaluation objects, such as figure 2 Shown:

[0122] 1. Power system resilience:

[0123] a) Security:

[0124] i. Structural safety:

[0125] (1) Partition power supply matching load matching degree: The local power supply load matching degree is the ratio of the maximum available capacity of the local power supply to the maximum dispatching load of the partition. This indicator reflects the ext...

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Abstract

The invention discloses a high-resolution power grid elasticity evaluation method, and belongs to the technical field of power grid evaluation index systems. The method comprises: establishing a layered index system; obtaining an index value through direct statistical calculation or MonteCarlo sampling, and performing logarithm operation on the obtained index value to increase the discrimination of the index; constructing an evaluation matrix H = ATA through the index value matrix A of the evaluation object, and taking each element normalized by the feature vector corresponding to the maximum feature value of the H matrix as the weight of each index; weighting the bottom-layer indexes to obtain an index value of an upper layer; and repeating the operation until an elastic index of the evaluation object is obtained as a basis for judging the elasticity of the power grid. When the elasticity of the power grid is judged, the adopted basic indexes are clear in physical significance and easy to obtain; logarithm processing index values are adopted, so that the index distinction degree can be effectively increased; the evaluation object grade can be revealed layer by layer by adopting the weighting method, the evaluation method resolution is increased, and the application value is high.

Description

technical field [0001] The invention relates to the technical field of power grid evaluation index system, in particular to a high-resolution power grid resilience evaluation method. Background technique [0002] From the perspective of the internal environment faced by the power system, my country's power system has entered a stage of rapid development of large-capacity DC and large-scale new energy since 2010. As of the end of 2019, 11 UHV DC circuits (95.6 million kilowatts) have been put into operation, and the wind power and photovoltaic grid-connected capacity in the business area has reached 182 million kilowatts and 143 million kilowatts. First, major changes have taken place in the power grid structure. UHV AC and DC power grids have gradually formed, system capacity and long-distance transmission scale continue to expand, AC and DC coupling characteristics are complex, and the contradiction between large DC / DC groups and weak AC has become more prominent; Signific...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06
CPCG06Q10/04G06Q10/0635G06Q10/06393G06Q50/06
Inventor 何英静王曦冉李海疆李天佑章敏捷杨翾石国超徐旸李帆沈淑仪但扬清乔永亮王妤宁张丽婧毛安家徐子涵于湉湉
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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