Safety evaluation method for active power distribution network

A security assessment and distribution network technology, applied in resources, complex mathematical operations, instruments, etc., can solve problems such as output uncertainty

Active Publication Date: 2020-10-20
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

However, renewable energy is affected by natural conditions such as wind and light, and its output has great uncertainty. Moreover, the random charging behavior of electric vehicles will also bring new challenges to the safe and stable operation of active distribution networks.
At the same time, there are also risks in the coupling between the physical system and the information system of the active distribution network, and the damage caused by various network attacks to the active distribution network is also different.

Method used

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  • Safety evaluation method for active power distribution network
  • Safety evaluation method for active power distribution network
  • Safety evaluation method for active power distribution network

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Embodiment Construction

[0064] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0065] An active distribution network security assessment method provided by an embodiment of the present invention includes:

[0066] Calculate the probability of instability of the active distribution network;

[0067] Create a spatio-temporal model of the active distribution network;

[0068] Based on the instability probability of the active distribution network, the diffraction index, focusing index, sputtering index and global index are established thro...

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Abstract

The invention discloses a safety assessment method for an active power distribution network. The method comprises the following steps of: calculating the instability probability of an active power distribution network; establishing a space-time model of the active power distribution network; based on the instability probability of the active power distribution network, establishing a diffraction index, a focusing index, a sputtering index and a global index through the space-time model; and evaluating the safety of the active power distribution network according to the four indexes; the methodcan solve the safety evaluation problem of the active power distribution network under the influence of multiple uncertainty, ensures the safe and stable operation of the active power distribution network, is accurate in evaluation, is suitable for the safety evaluation of the operation of various types of active power distribution networks, and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of power grid evaluation, in particular to a safety evaluation method for an active distribution network. Background technique [0002] At present, the active distribution network, as a means to realize the integrated operation of renewable energy and load, has become the focus of research in various countries. At the same time, electric vehicle charging piles are gradually becoming an important part of the active distribution network. However, renewable energy is affected by natural conditions such as wind and light, and its output has great uncertainty. Moreover, the random charging behavior of electric vehicles will also bring new challenges to the safe and stable operation of active distribution networks. . At the same time, there are also risks in the coupling between the physical system and the information system of the active distribution network, and the damage caused by various network attacks to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06F17/16G06F17/18G06Q50/06
CPCG06Q10/06393G06Q50/06G06F17/16G06F17/18
Inventor 岳东张智俊窦春霞丁孝华张腾飞李延满
Owner NANJING UNIV OF POSTS & TELECOMM
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