Safety evaluation method for active power distribution network

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 ...

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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.

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