A security assessment method for active distribution network

Abstract

The invention discloses a method for evaluating the safety of an active distribution network, which includes: calculating the probability of instability of the active distribution network; establishing a space-time model of the active distribution network; based on the probability of instability of the active distribution network, through The space-time model establishes diffraction index, focusing index, sputtering index and global index, and evaluates the security of the active distribution network according to the above four indexes; the present invention can solve the problem of multiple uncertainties in the active distribution network. The safety assessment problem under the influence ensures the safe and stable operation of the active distribution network, and the evaluation of the invention is accurate, and is suitable for the safety assessment of the operation of many types of active 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 an active distribution network security evaluation method. Background technique [0002] At present, the active distribution network has become the focus of research in various countries as a means to realize the integrated operation of renewable energy and load. 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, and the random charging behavior of electric vehicles will also bring new challenges to the safe and stable operation of the active distribution network. . At the same time, there is also a risk between the coupling of the physical system and the information system of the active distribution network, and the damage caused by various network attacks to the activ...

AI Technical Summary

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.

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