The Feature and Formation Mechanism Analysis of the Distribution Network Fault in Time and Space

With the promotion and application of electricity consumption information acquisition system in distribution network, more accurate data is provided to analyze the spatial-temporal characteristics of the distribution network fault. This paper selects the transformer blackout and line tripping events information of the distribution network in H province as the analyzed object. Firstly, the frequency and cumulative probability of these events are counted and fitted on the double-logarithmic coordinate. It is summed that the blackout events of H province follows the power-law distribution in time and space, which verifies its spatial-temporal self-similarity and multi-scale invariance. Secondly, the fault mechanism is analyzed temporally and spatially. Finally, it is concluded that the fault evolution features in various cities are similar temporally, but different spatially. The auxiliary decision-making based on the analysis result is more reasonable to improve the distribution network operation and power supply reliability.